Researcher basic information

• Doctor (Earth and Environmental Science), Hokkaido University
• Master (Environmental Science), Hokkaido University

• https://researchmap.jp/read0065362?lang=en

• https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200901001802481432
• https://researchers.general.hokudai.ac.jp/profile/ja.re4G5OC5Om6VpK4kn.J0.A==.html

• 200901001802481432

• 森林生態
• 農林気象
• 温暖化
• 炭素循環
• 物質循環
• 森林
• Forest Ecology
• Agricultural and Forest Meteorology
• Global Warming
• Carbon Balance
• Forest

• Life Science, Forest science
• Environmental Science/Agriculture Science, Agricultural environmental engineering and agricultural information engineering
• Environmental Science/Agriculture Science, Environmental dynamic analysis

• Bachelor's degree program, School of Agriculture
• Master's degree program, Graduate School of Environmental Science
• Doctoral (PhD) degree program, Graduate School of Environmental Science

Research activity information

• Modeling diurnal gross primary production in East Asia using Himawari-8/9 geostationary satellite data
  Yuhei Yamamoto; Kazuhito Ichii; Wei Yang; Yui Shikakura; Youngryel Ryu; Minseok Kang; Shohei Murayama; Su-Jin Kim; Yuta Takao; Masahito Ueyama; Tomoko Kawaguchi Akitsu; Hiroki Iwata; Hojin Lee; Junghwa Chun; Atsushi Higuchi; Takashi Hirano; AReum Kim; Hyun Seok Kim; Kenzo Kitamura; Yuji Kominami; Kazuho Matsumoto; Jun Suzuki; Kentaro Takagi; Yoshiyuki Takahashi; Satoru Takanashi; Hideaki Takenaka; Shingo Taniguchi; Yukio Yasuda
  Remote Sensing of Environment, 328, 114866, 114866, Elsevier BV, Oct. 2025
  Scientific journal
• Assessment of the Applicability of Hue from In Situ Spectral Measurements to Remote Sensing of Plant Phenology
  Yuki Mizuno; Taiga Sasagawa; Yoshiyuki Takahashi; Reiko Ide; Toshiyuki Kobayashi; Hiroyuki Muraoka; Kentaro Takagi; Keisuke Ono; Kenlo Nishida Nasahara
  Remote Sensing, 17, 16, 2767, 2767, MDPI AG, 09 Aug. 2025
  Scientific journal, Climate change is accelerating, and the monitoring of plant phenology is becoming increasingly important. In response to this need, many vegetation indices (VIs) and analytical methods have been developed. However, many VIs are vulnerable to uncertainties caused by snowmelt, making them potentially unsuitable for monitoring spring phenology in forested regions where leaf flush (start of season, SOS) begins simultaneously with snowmelt. Although several VIs for snowy regions have been proposed, most of them were designed for tundra vegetation, such as grasslands. Currently, no VI or analytical method specifically suited for snowy forested regions has been firmly established. Similarly, there is still no well-established method for continuously monitoring autumn coloration. In this study, we propose the use of hue, one of the components of the HSV model, for remote sensing of plant phenology. Hue quantifies differences in object color and is expected to facilitate clearer distinction of snow influence. It may also enable accurate detection of canopy color transitions, such as autumn coloration. We evaluate the applicability of hue to remote sensing using in situ spectroradiometer observations collected from five sites of the Phenological Eyes Network (PEN), which represent a range of ecosystems—including forests, grasslands, and paddy fields—as well as the relative spectral response (RSR) of the Second-generation Global Imager (SGLI) onboard the GCOM-C satellite operated by JAXA (Japan Aerospace Exploration Agency). The results suggest that hue is more robust to snow-related uncertainties than traditional VIs (NDVI, EVI, CCI, NDGI) and may also be effective for quantifying autumn coloration. Hue is calculated solely from blue, green, and red reflectance, without relying on near-infrared (NIR) or shortwave infrared (SWIR) channels. Since blue, green and red channels are available on almost all optical satellite sensors, hue may offer broader applicability than many traditional VIs.
• The global spectrum of tree crown architecture
  Tommaso Jucker; Fabian Jörg Fischer; Jérôme Chave; David A. Coomes; John Caspersen; Arshad Ali; Grace Jopaul Loubota Panzou; Ted R. Feldpausch; Daniel Falster; Vladimir A. Usoltsev; Toby D. Jackson; Stephen Adu-Bredu; Luciana F. Alves; Mohammad Aminpour; Bhely Angoboy Ilondea; Niels P. R. Anten; Cécile Antin; Yousef Askari; Narayanan Ayyappan; Lindsay F. Banin; Nicolas Barbier; John J. Battles; Hans Beeckman; Yannick E. Bocko; Ben Bond-Lamberty; Frans Bongers; Samuel Bowers; Michiel van Breugel; Arthur Chantrain; Rajeev Chaudhary; Jingyu Dai; Michele Dalponte; Kangbéni Dimobe; Jean-Christophe Domec; Jean-Louis Doucet; Juan Manuel Dupuy Rada; Remko A. Duursma; Moisés Enríquez; Karin Y. van Ewijk; William Farfán-Rios; Adeline Fayolle; Marco Ferretti; Eric Forni; David I. Forrester; Hammad Gilani; John L. Godlee; Matthias Haeni; Jefferson S. Hall; Jie-Kun He; Andreas Hemp; José L. Hernández-Stefanoni; Steven I. Higgins; Robert J. Holdaway; Kiramat Hussain; Lindsay B. Hutley; Tomoaki Ichie; Yoshiko Iida; Hai-Sheng Jiang; Puspa Raj Joshi; Hasan Kaboli; Maryam Kazempour Larsary; Tanaka Kenzo; Brian D. Kloeppel; Takashi S. Kohyama; Suwash Kunwar; Shem Kuyah; Jakub Kvasnica; Siliang Lin; Emily R. Lines; Hongyan Liu; Craig Lorimer; Jean-Joël Loumeto; Yadvinder Malhi; Peter L. Marshall; Eskil Mattsson; Radim Matula; Jorge A. Meave; Sylvanus Mensah; Xiangcheng Mi; Stéphane T. Momo; Glenn R. Moncrieff; Francisco Mora; Rodrigo Muñoz; Sarath P. Nissanka; Zamah Shari Nur Hajar; Kevin L. O’Hara; Steven Pearce; Raphaël Pelissier; Pablo L. Peri; Pierre Ploton; Lourens Poorter; Mohsen Javanmiri Pour; Hassan Pourbabaei; Sabina C. Ribeiro; Casey Ryan; Anvar Sanaei; Jennifer Sanger; Michael Schlund; Giacomo Sellan; Alexander Shenkin; Bonaventure Sonké; Frank J. Sterck; Martin Svátek; Kentaro Takagi; Anna T. Trugman; Matthew A. Vadeboncoeur; Ahmad Valipour; Mark C. Vanderwel; Alejandra G. Vovides; Peter Waldner; Weiwei Wang; Li-Qiu Wang; Christian Wirth; Murray Woods; Wenhua Xiang; Fabiano de Aquino Ximenes; Yaozhan Xu; Toshihiro Yamada; Miguel A. Zavala; Niklaus E. Zimmermann
  Nature Communications, 16, 1, Springer Science and Business Media LLC, 26 May 2025
  Scientific journal, Abstract
  
  Trees can differ enormously in their crown architectural traits, such as the scaling relationships between tree height, crown width and stem diameter. Yet despite the importance of crown architecture in shaping the structure and function of terrestrial ecosystems, we lack a complete picture of what drives this incredible diversity in crown shapes. Using data from 374,888 globally distributed trees, we explore how climate, disturbance, competition, functional traits, and evolutionary history constrain the height and crown width scaling relationships of 1914 tree species. We find that variation in height–diameter scaling relationships is primarily controlled by water availability and light competition. Conversely, crown width is predominantly shaped by exposure to wind and fire, while also covarying with functional traits related to mechanical stability and photosynthesis. Additionally, we identify several plant lineages with highly distinctive stem and crown forms, such as the exceedingly slender dipterocarps of Southeast Asia, or the extremely wide crowns of legume trees in African savannas. Our study charts the global spectrum of tree crown architecture and pinpoints the processes that shape the 3D structure of woody ecosystems.
• The JapanFlux2024 dataset for eddy covariance observations covering Japan and East Asia from 1990 to 2023
  Masahito Ueyama; Yuta Takao; Hiromi Yazawa; Makiko Tanaka; Hironori Yabuki; Tomo’omi Kumagai; Hiroki Iwata; Md. Abdul Awal; Mingyuan Du; Yoshinobu Harazono; Yoshiaki Hata; Takashi Hirano; Tsutom Hiura; Reiko Ide; Sachinobu Ishida; Mamoru Ishikawa; Kenzo Kitamura; Yuji Kominami; Shujiro Komiya; Ayumi Kotani; Yuta Inoue; Takashi Machimura; Kazuho Matsumoto; Yojiro Matsuura; Yasuko Mizoguchi; Shohei Murayama; Hirohiko Nagano; Taro Nakai; Tatsuro Nakaji; Ko Nakaya; Shinjiro Ohkubo; Takeshi Ohta; Keisuke Ono; Taku M. Saitoh; Ayaka Sakabe; Takanori Shimizu; Seiji Shimoda; Michiaki Sugita; Kentaro Takagi; Yoshiyuki Takahashi; Naoya Takamura; Satoru Takanashi; Takahiro Takimoto; Yukio Yasuda; Qinxue Wang; Jun Asanuma; Hideo Hasegawa; Tetsuya Hiyama; Yoshihiro Iijima; Shigeyuki Ishidoya; Masayuki Itoh; Tomomichi Kato; Hiroaki Kondo; Yoshiko Kosugi; Tomonori Kume; Takahisa Maeda; Trofim Maximov; Ryo Moriwaki; Hiroyuki Muraoka; Roman Petrov; Jun Suzuki; Shingo Taniguchi; Kazuhito Ichii
  Copernicus GmbH, 12 Feb. 2025
  Abstract. Eddy covariance observations play a pivotal role in understanding the land–atmosphere exchange of energy, water, carbon dioxide (CO2), and other trace gases, as well as the global carbon cycle and earth system. To promote the networking of individual measurements and the sharing of data, FLUXNET links regional networks of researchers studying land–atmosphere processes. JapanFlux was established in 2006 as a country branch of AsiaFlux. Despite the growing number of shared data globally, the availability in Asia is currently limited. In this study, we developed an open dataset of the eddy covariance observations for Japan and East Asia, called JapanFlux2024, that was conducted by researchers affiliated with Japanese research institutions. The dataset consists of data collected at 79 sites with 652 site-years from 1990 to 2023. The data format is fully compatible with the recent FLUXNET data product, FLUXNET2015. Here, we present the data description and data processing and show the value of processed fluxes of sensible heat, latent heat, and CO2. The dataset will facilitate important studies for Japan and East Asia, such as land-atmosphere interactions, improvement of process models, and upscaling fluxes using machine learning and remote sensing technology as well as bridge collaborations between Asia and FLUXNET.
• Canopy height damage by Typhoon Songda in Northern Hokkaido, Japan, in 2004
  TaeOh Kwon; Hideaki Shibata; Tetsuya Takemi; Kentaro Takagi
  Environmental Research: Ecology, 3, 4, 045002, 045002, IOP Publishing, 18 Oct. 2024
  Scientific journal, Abstract
  
  The increasing need for the risk assessment of disastrous wind disturbance, especially by tropical cyclones (TCs), has been emphasized because the number of intense TCs is projected to increase due to global warming, though there are some discrepancies across oceanic basins. There is also an agreement of the northward migration of TC disturbance in Far East Asia in the future, when meteorological changes accompanying global warming are considered together. This study assessed the canopy height damage caused by the historic Typhoon Songda in 2004 from the perspective of the relations with topography, wind traits, and forest canopy types in northern Hokkaido, Japan. We found that the order of canopy height damage was consistent along every single aspect and every canopy height class with conifer-canopied forest > mixed-canopied forest > hardwood-canopied forest and higher damage on windward aspects than on leeward aspects. It was noted that the canopy height damage to hardwood and mixed forests showed a threshold pattern at around 14 m in canopy height, whereas for conifer forests, this was not the case. Strong causal relations were not observed between canopy damage (outcomes) and wind severity, inclination of slope, or canopy height (causes), though the causal relations were highly significant between wind severity or canopy height (mediators) and altitude or inclination of slope (causes) for all the studied canopy types. Given typhoon-induced forest damage is the consequence of the interactions among various intermingled biotic and abiotic causes and that areas affected by intense typhoons are anticipated to extend northward, more case studies in regions such as Hokkaido in Japan and the further north, which have rarely been visited by typhoons but are projected to be more affected by increasing number of intense typhoons, should be regarded as a high priority from this time forward for sustainable forest management.
• Forest structure explains spatial heterogeneity of decadal carbon dynamics in a cool-temperate forest
  Kentaro Takagi; Kojiiro Hirayama; Masato Hayashi; Kobayashi Makoto; Keiji Okada; Hiroyuki Oguma; Nobuko Saigusa
  Environmental Research Letters, 19, 11, 114022, 114022, IOP Publishing, 01 Oct. 2024
  Scientific journal, Abstract
  
  Accurate evaluation of forest biomass distribution and its long-term change over wide areas is required for effective forest carbon management and prediction of landscape-scale forest dynamics. We evaluated a landscape-scale (225 km²) decadal forest carbon budget at a 1 ha spatial resolution in a cool-temperate forest, by repeating airborne laser observations 10 years apart and partitioning net forest biomass change (FBC) into growth and mortality. Using >10 000 samples, we revealed that naturally regenerated forests have large spatial heterogeneity in net biomass change, and 3/4 of the photosynthetically acquired carbon stock moved to necromass even without anthropogenic disturbances. Actual carbon residence time as living tree biomass was estimated by dividing biomass by growth or mortality rates. The residence time was 107 and 106 years, respectively with large spatial variation among stands (48 and 42 years, respectively, as the difference between 25 and 75 percentile), although studied forest stands have small variation in the forest functional type in a landscape-scale. The best predictors of subsequent decadal biomass changes were two forest structural factors, mean canopy height and canopy height variation in addition to one environmental factor, elevation. Considering the long lifetime of trees, these structural factors may be an indicator of forest soundness rather than a cause of forest growth or mortality. However, in any cases, these structural factors can be powerful predictors of subsequent FBC.
• Long-term Consequences on Soil Fungal Community Structure: Monoculture Planting and Natural Regeneration.
  Minagi Naka; Shota Masumoto; Keita Nishizawa; Shunsuke Matsuoka; Shinichi Tatsumi; Yuta Kobayashi; Kureha F Suzuki; Xinyu Xu; Tomoya Kawakami; Noboru Katayama; Kobayashi Makoto; Kei-Ichi Okada; Masaki Uchida; Kentaro Takagi; Akira S Mori
  Environmental management, 15 Dec. 2023, [Peer-reviewed], [International Magazine]
  English, Scientific journal, Understanding the regeneration and succession of belowground communities, particularly in forests, is vital for maintaining ecosystem health. Despite its importance, there is limited knowledge regarding how fungal communities change over time during ecosystem development, especially under different forest restoration strategies. In this study, we focused on two restoration methods used in northern Japan: monoculture planting and natural regeneration. We examined the responses of the fungal community to monoculture plantations (active tree planting) and naturally regenerated (passive regeneration) forests over a 50-year chronosequence, using natural forests as a reference. Based on DNA metabarcoding, we assessed the richness of fungal Operational Taxonomic Units (OTUs) and their dissimilarity. Our findings revealed that soil fungal richness remained stable after natural regeneration but declined in monoculture plantations, from 354 to 247 OTUs. While the compositional dissimilarity of fungal assemblages between monoculture plantations and natural forests remained consistent regardless of the time since tree planting, it significantly decreased after natural regeneration, suggesting recovery to a state close to the reference level. Notably, the composition of key functional fungal groups-saprotrophic and ectomycorrhizal- has increasingly mirrored that of natural forests over time following passive natural regeneration. In summary, our study suggests that monoculture plantations may not be effective for long-term ecosystem function and service recovery because of their limited support for soil fungal diversity. These results underscore the importance of natural regeneration in forest restoration and management strategies.
• Modeling forest above-ground biomass using freely available satellite and multisource datasets
  Ai Hojo; Ram Avtar; Tatsuro Nakaji; Takeo Tadono; Kentaro Takagi
  Ecological Informatics, 74, 101973, 101973, Elsevier BV, May 2023
  Scientific journal
• Influence of Earlier Snowmelt on the Seedling Growth of Six Subboreal Tree Species in the Spring
  Erica Marumo; Miki U. Ueda; Osamu Seki; Kentaro Takagi; Kobayashi Makoto
  Forests, 14, 3, 600, 600, MDPI AG, 17 Mar. 2023
  English, Scientific journal, Climate warming is advancing snowmelt timing in the spring at high latitudes. To predict tree growth in subboreal forests under warmer climates based on mechanistic understanding, it is important to assess how advancing snowmelt influences tree growth in the spring via ecophysiological changes in subboreal forests. In this study, we conducted a field manipulation experiment of snowmelt timing and investigated the response of tree growth, leaf functional traits, and bud-burst phenology in the spring for the seedlings of six dominant tree species in subboreal forests. We found that the spring growth of only one species (Kalopanax septemlobus) out of six species responded positively to advancing snowmelt. Among the leaf functional traits (leaf mass per area, leaf nitrogen content, leaf δ13C value, leaf dry matter content, and leaf area) and bud-burst phenology, only the increase in leaf area was linked to the enhanced shoot growth of K. septemlobus. The significant change in K. septemlobus might be associated with its ecological characteristics to prefer regeneration in canopy gaps. These results indicate that advancing snowmelt under warmer winters can be beneficial for tree species that can plastically develop leaf area in Japanese subboreal forests.
• Presence of understory dwarf bamboo determines ecosystem fine root production in a cool-temperate forest in northern Japan
  Sanae Yanagawa; Karibu Fukuzawa; Kentaro Takagi; Hideaki Shibata; Fuyuki Satoh
  JOURNAL OF FOREST RESEARCH, 28, 3, 177, 185, Feb. 2023
  English, Scientific journal
• Accuracy Assessment of Photochemical Reflectance Index (PRI) and Chlorophyll Carotenoid Index (CCI) Derived from GCOM-C/SGLI with In Situ Data
  Taiga Sasagawa; Tomoko Kawaguchi Akitsu; Reiko Ide; Kentaro Takagi; Satoru Takanashi; Tatsuro Nakaji; Kenlo Nishida Nasahara
  Remote Sensing, 14, 21, 5352, 5352, MDPI AG, 26 Oct. 2022
  Scientific journal, The photochemical reflectance index (PRI) and the chlorophyll carotenoid index (CCI) are carotenoid-sensitive vegetation indices, which can monitor vegetation’s photosynthetic activities. One unique satellite named “Global Change Observation Mission-Climate (GCOM-C)” is equipped with a sensor, “Second Generation Global Imager (SGLI)”, which has the potential to frequently and simultaneously observe PRI and CCI over a wide swath. However, the observation accuracy of PRI and CCI derived from GCOM-C/SGLI remains unclear in forests. Thus, we demonstrated their accuracy assessment by comparing them with in situ data. We collected in situ spectral irradiance data at four forest sites in Japan for three years. We statistically compared satellite PRI with in situ PRI, and satellite CCI with in situ CCI. From the obtained results, the satellite PRI showed poor agreement (the best: r=0.294 (p<0.05)) and the satellite CCI showed good agreement (the best: r=0.911 (p<0.001)). The greater agreement of satellite CCI is possibly because satellite CCI contained fewer outliers and satellite CCI was more resistant to small noise, compared to satellite PRI. Our results suggest that the satellite CCI is more suitable for practical use than the satellite PRI with the latest version (version 3) of GCOM-C/SGLI’s products.
• Assessing forest-canopy structure in restoration areas of Shiretoko National Park, Hokkaido, Japan from an adaptive- management perspective
  Kureha F. Suzuki; Yuta Kobayashi; Kentaro Takagi; Shintaro Hayakashi; Yuji Kusano; Ryota Matsubayashi; Akira S. Mori
  Japanese Journal of Conservation Ecology, 27, 283, 296, Oct. 2022, [Peer-reviewed]
  English, Scientific journal
• Tallo: A global tree allometry and crown architecture database
  Tommaso Jucker; Fabian Jörg Fischer; Jérôme Chave; David A. Coomes; John Caspersen; Arshad Ali; Grace Jopaul Loubota Panzou; Ted R. Feldpausch; Daniel Falster; Vladimir A. Usoltsev; Stephen Adu‐Bredu; Luciana F. Alves; Mohammad Aminpour; Ilondea B. Angoboy; Niels P. R. Anten; Cécile Antin; Yousef Askari; Rodrigo Muñoz; Narayanan Ayyappan; Patricia Balvanera; Lindsay Banin; Nicolas Barbier; John J. Battles; Hans Beeckman; Yannick E. Bocko; Ben Bond‐Lamberty; Frans Bongers; Samuel Bowers; Thomas Brade; Michiel van Breugel; Arthur Chantrain; Rajeev Chaudhary; Jingyu Dai; Michele Dalponte; Kangbéni Dimobe; Jean‐Christophe Domec; Jean‐Louis Doucet; Remko A. Duursma; Moisés Enríquez; Karin Y. van Ewijk; William Farfán‐Rios; Adeline Fayolle; Eric Forni; David I. Forrester; Hammad Gilani; John L. Godlee; Sylvie Gourlet‐Fleury; Matthias Haeni; Jefferson S. Hall; Jie‐Kun He; Andreas Hemp; José L. Hernández‐Stefanoni; Steven I. Higgins; Robert J. Holdaway; Kiramat Hussain; Lindsay B. Hutley; Tomoaki Ichie; Yoshiko Iida; Hai‐sheng Jiang; Puspa Raj Joshi; Hasan Kaboli; Maryam Kazempour Larsary; Tanaka Kenzo; Brian D. Kloeppel; Takashi Kohyama; Suwash Kunwar; Shem Kuyah; Jakub Kvasnica; Siliang Lin; Emily R. Lines; Hongyan Liu; Craig Lorimer; Jean‐Joël Loumeto; Yadvinder Malhi; Peter L. Marshall; Eskil Mattsson; Radim Matula; Jorge A. Meave; Sylvanus Mensah; Xiangcheng Mi; Stéphane Momo; Glenn R. Moncrieff; Francisco Mora; Sarath P. Nissanka; Kevin L. O'Hara; Steven Pearce; Raphaël Pelissier; Pablo L. Peri; Pierre Ploton; Lourens Poorter; Mohsen Javanmiri Pour; Hassan Pourbabaei; Juan Manuel Dupuy‐Rada; Sabina C. Ribeiro; Casey Ryan; Anvar Sanaei; Jennifer Sanger; Michael Schlund; Giacomo Sellan; Alexander Shenkin; Bonaventure Sonké; Frank J. Sterck; Martin Svátek; Kentaro Takagi; Anna T. Trugman; Farman Ullah; Matthew A. Vadeboncoeur; Ahmad Valipour; Mark C. Vanderwel; Alejandra G. Vovides; Weiwei Wang; Li‐Qiu Wang; Christian Wirth; Murray Woods; Wenhua Xiang; Fabiano de Aquino Ximenes; Yaozhan Xu; Toshihiro Yamada; Miguel A. Zavala
  Global Change Biology, 28, 17, 5254, 5268, Wiley, Sep. 2022, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal
• Early snowmelt by an extreme warming event affects understory more than overstory trees in Japanese temperate forests
  Kobayashi Makoto; Pamela H. Templer; Ayumi Katayama; Osamu Seki; Kentaro Takagi
  ECOSPHERE, 13, 7, Jul. 2022, [Peer-reviewed], [Last author], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal
• The variability and seasonality in the ratio of photosynthetically active radiation to solar radiation: A simple empirical model of the ratio
  Tomoko Kawaguchi Akitsu; Kenlo Nishida Nasahara; Osamu Ijima; Yasuo Hirose; Reiko Ide; Kentaro Takagi; Atsushi Kume
  International Journal of Applied Earth Observation and Geoinformation, 108, Apr. 2022, [Peer-reviewed], [International Magazine]
  English, Scientific journal
• Long-term monitoring on the dynamics of ecosystem CO2 balance recovering from a clear-cut harvesting in a cool-temperate forest
  Kentaro TAKAGI; Maricar AGUILOS; Naishen LIANG; Yoshiyuki TAKAHASHI; Nobuko SAIGUSA; Takayoshi KOIKE; Kaichiro SASA
  Eurasian Journal of Forest Research, 22, 49, 51, 2022, [Peer-reviewed], [Lead author]
  English, Research institution
• Measurement of biogenic volatile organic compounds (BVOCs）and dynamics of insect herbivories
  増井, 昇; 谷, 晃; 松浦, 英幸; 渡部, 敏裕; 藤戸, 永志; 佐々木, 圭子; 佐藤, 冬樹; 高木, 健太郎; アガトクレオス, エフゲニオス; 小池, 孝良
  Technical report for boreal forest conservation of the Hokkaido University Forests, 39, 1, 5, 北海道大学北方生物圏フィールド科学センター森林圏ステーション, Nov. 2021
  Japanese, Research institution
• Corrigendum to “The effect of snow reduction and Eisenia japonica earthworm traits on soil nitrogen dynamics in spring in a cool-temperate forest.” [Appl. Soil Ecol. Volume 144: 1–7, December 2019] (Applied Soil Ecology (2019) 144 (1–7), (S0929139319303233), (10.1016/j.apsoil.2019.06.019))
  Kobayashi Makoto; Semyon V. Bryanin; Kentaro Takagi
  Applied Soil Ecology, 166, Elsevier B.V., 01 Oct. 2021
  English, Scientific journal
• Response of Background Herbivory in Mature Birch Trees to Global Warming
  Masahiro Nakamura; Moeko Minoshima; Chisato Terada; Kentaro Takagi; Kobayashi Makoto; Hideaki Shibata; Tsutom Hiura
  Frontiers in Forests and Global Change, 4, Frontiers Media SA, 22 Sep. 2021, [Peer-reviewed], [International Magazine]
  English, Scientific journal, Given the time scale based on the duration of exposure to global warming, natural climate-gradient studies and experimental manipulations have detected long-term (decades to centuries) and short-term (years to decades) ecological responses to global warming. Combination of these two complementary approaches within a single study may enable prediction of the likely responses of ecological processes to global warming. To understand how global warming affects plant–herbivore interactions within a canopy of Erman’s birch, we combined an elevational gradient study and a warming experiment involving mature birch trees in which the soil and tree branches were warmed separately. In the elevational gradient study, herbivory by chewing insects and plant growth increased as elevation decreased, and the concentrations of condensed tannins and total phenolics in the leaves decreased. In the warming experiment, soil warming alone increased herbivory, and the addition of branch warming amplified the effect on herbivory. Soil warming alone decreased the tannin concentration, and the addition of branch warming led to a further reduction. The variation in herbivory was best explained by the tannin content of leaves. Our experimental results demonstrate that the decreased tannin content of leaves due to a combination of soil and branch warming was an important driver of increased herbivory in the canopy of the mature birch trees. The similar tendencies in the short- and long-term responses imply that global warming is likely to increase background herbivory in mature birch trees by decreasing the tannin content of leaves in the canopy.
• Exploring a best vegetation index to explain the seasonal variation of a forest photosynthesis using a hyper-spectral camera equipped with liquid crystal tunable filter
  Kei Yoshikawa; Kentaro Takagi; Tomotsugu Yazaki; Takashi Hirano; Shintaro Hayakashi; Reiko Ide; Hiroyuki Oguma; Yasuo Hirose; Junichi Kurihara
  Journal of Agricultural Meteorology, 77, 4, 253, 261, 2021, [Peer-reviewed], [Corresponding author], [International Magazine]
  English, Scientific journal
• COSORE: A community database for continuous soil respiration and other soil-atmosphere greenhouse gas flux data
  Ben Bond-Lamberty; Danielle S. Christianson; Avni Malhotra; Stephanie C. Pennington; Debjani Sihi; Amir AghaKouchak; Hassan Anjileli; M. Altaf Arain; Juan J. Armesto; Samaneh Ashraf; Mioko Ataka; Dennis Baldocchi; Thomas Andrew Black; Nina Buchmann; Mariah S. Carbone; Shih Chieh Chang; Patrick Crill; Peter S. Curtis; Eric A. Davidson; Ankur R. Desai; John E. Drake; Tarek S. El-Madany; Michael Gavazzi; Carolyn Monika Görres; Christopher M. Gough; Michael Goulden; Jillian Gregg; Omar Gutiérrez del Arroyo; Jin Sheng He; Takashi Hirano; Anya Hopple; Holly Hughes; Järvi Järveoja; Rachhpal Jassal; Jinshi Jian; Haiming Kan; Jason Kaye; Yuji Kominami; Naishen Liang; David Lipson; Catriona A. Macdonald; Kadmiel Maseyk; Kayla Mathes; Marguerite Mauritz; Melanie A. Mayes; Steve McNulty; Guofang Miao; Mirco Migliavacca; Scott Miller; Chelcy F. Miniat; Jennifer G. Nietz; Mats B. Nilsson; Asko Noormets; Hamidreza Norouzi; Christine S. O’Connell; Bruce Osborne; Cecilio Oyonarte; Zhuo Pang; Matthias Peichl; Elise Pendall; Jorge F. Perez-Quezada; Claire L. Phillips; Richard P. Phillips; James W. Raich; Alexandre A. Renchon; Nadine K. Ruehr; Enrique P. Sánchez-Cañete; Matthew Saunders; Kathleen E. Savage; Marion Schrumpf; Russell L. Scott; Ulli Seibt; Whendee L. Silver; Wu Sun; Daphne Szutu; Kentaro Takagi; Masahiro Takagi; Munemasa Teramoto; Mark G. Tjoelker; Susan Trumbore; Masahito Ueyama; Rodrigo Vargas; Ruth K. Varner; Joseph Verfaillie; Christoph Vogel; Jinsong Wang; Greg Winston; Tana E. Wood; Juying Wu; Thomas Wutzler; Jiye Zeng; Tianshan Zha; Quan Zhang; Junliang Zou
  Global Change Biology, 26, 12, 7268, 7283, Dec. 2020, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal
• Demography and productivity during the recovery time sequence of a wild edible bamboo after large-scale anthropogenic disturbance
  Noboru Katayama; Osamu Kishida; Chikako Miyoshi; Shintaro Hayakashi; Kinya Ito; Rei Sakai; Aiko Naniwa; Hiroyuki Takahashi; Kentaro Takagi
  PLoS ONE, 15, 12 December, Dec. 2020, [Peer-reviewed], [Last author], [International Magazine]
  English, Scientific journal
• Inferring CO(2)fertilization effect based on global monitoring land-atmosphere exchange with a theoretical model
  Masahito Ueyama; Kazuhito Ichii; Hideki Kobayashi; Tomo'omi Kumagai; Jason Beringer; Lutz Merbold; Eugenie S. Euskirchen; Takashi Hirano; Luca Belelli Marchesini; Dennis Baldocchi; Taku M. Saitoh; Yasuko Mizoguchi; Keisuke Ono; Joon Kim; Andrej Varlagin; Minseok Kang; Takanori Shimizu; Yoshiko Kosugi; M. Syndonia Bret-Harte; Takashi Machimura; Yojiro Matsuura; Takeshi Ohta; Kentaro Takagi; Satoru Takanashi; Yukio Yasuda
  ENVIRONMENTAL RESEARCH LETTERS, 15, 8, Aug. 2020, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal
• Inter-annual variation of soil respiration and its spatial heterogeneity in a cool-temperate young larch plantation in northern Japan
  Lifei Sun; Kentaro Takagi; Munemasa Teramoto; Shintaro Hayakashi; Naishen Liang
  JOURNAL OF AGRICULTURAL METEOROLOGY, 76, 3, 119, 127, Jul. 2020, [Peer-reviewed], [International Magazine]
  English, Scientific journal
• Timing of bud burst of smaller individuals is not always earlier than that of larger trees in a cool-temperate forest with heavy snow
  Erika Marumo; Kentaro Takagi; Kobayashi Makoto
  JOURNAL OF FOREST RESEARCH, 25, 4, 285, 290, Jul. 2020, [Peer-reviewed], [International Magazine]
  English, Scientific journal
• Field data for satellite validation and forest structure modeling in a pure and sparse forest of Picea glehnii in northern Hokkaido
  Tomoko K. Akitsu; Tatsuro Nakaji; Toshiya Yoshida; Rei Sakai; Wataru Mamiya; Terigele; Kentaro Takagi; Yoshiaki Honda; Koji Kajiwara; Kenlo N. Nasahara
  Ecological Research, Wiley, 25 May 2020, [Peer-reviewed], [International Magazine]
  English, Scientific journal
• Effects of aerosol dynamics and gas-particle conversion on dry deposition of inorganic reactive nitrogen in a temperate forest
  Genki Katata; Kazuhide Matsuda; Atsuyuki Sorimachi; Mizuo Kajino; Kentaro Takagi
  Atmospheric Chemistry and Physics, 20, 8, 4933, 4949, Apr. 2020, [Peer-reviewed], [Last author], [International Magazine]
  English, Scientific journal
• Synthesis of l-band sar and forest heights derived from TanDEM-X DEM and 3 digital terrain models for Biomass Mapping
  Ai Hojo; Kentaro Takagi; Ram Avtar; Takeo Tadono; Futoshi Nakamura
  Remote Sensing, 12, 3, 01 Feb. 2020, [Peer-reviewed], [International Magazine]
  English, Scientific journal
• TRY plant trait database – enhanced coverage and open access
  Jens Kattge; Gerhard Bönisch; Sandra Díaz; Sandra Lavorel; Iain Colin Prentice; Paul Leadley; Susanne Tautenhahn; Gijsbert D.A. Werner; Tuomas Aakala; Mehdi Abedi; Alicia T.R. Acosta; George C. Adamidis; Kairi Adamson; Masahiro Aiba; Cécile H. Albert; Julio M. Alcántara; Carolina Alcázar C; Izabela Aleixo; Hamada Ali; Bernard Amiaud; Christian Ammer; Mariano M. Amoroso; Madhur Anand; Carolyn Anderson; Niels Anten; Joseph Antos; Deborah Mattos Guimarães Apgaua; Tia Lynn Ashman; Degi Harja Asmara; Gregory P. Asner; Michael Aspinwall; Owen Atkin; Isabelle Aubin; Lars Baastrup-Spohr; Khadijeh Bahalkeh; Michael Bahn; Timothy Baker; William J. Baker; Jan P. Bakker; Dennis Baldocchi; Jennifer Baltzer; Arindam Banerjee; Anne Baranger; Jos Barlow; Diego R. Barneche; Zdravko Baruch; Denis Bastianelli; John Battles; William Bauerle; Marijn Bauters; Erika Bazzato; Michael Beckmann; Hans Beeckman; Carl Beierkuhnlein; Renee Bekker; Gavin Belfry; Michael Belluau; Mirela Beloiu; Raquel Benavides; Lahcen Benomar; Mary Lee Berdugo-Lattke; Erika Berenguer; Rodrigo Bergamin; Joana Bergmann; Marcos Bergmann Carlucci; Logan Berner; Markus Bernhardt-Römermann; Christof Bigler; Anne D. Bjorkman; Chris Blackman; Carolina Blanco; Benjamin Blonder; Dana Blumenthal; Kelly T. Bocanegra-González; Pascal Boeckx; Stephanie Bohlman; Katrin Böhning-Gaese; Laura Boisvert-Marsh; William Bond; Ben Bond-Lamberty; Arnoud Boom; Coline C.F. Boonman; Kauane Bordin; Elizabeth H. Boughton; Vanessa Boukili; David M.J.S. Bowman; Sandra Bravo; Marco Richard Brendel; Martin R. Broadley; Kerry A. Brown; Helge Bruelheide; Federico Brumnich; Hans Henrik Bruun; David Bruy; Serra W. Buchanan; Solveig Franziska Bucher; Nina Buchmann; Robert Buitenwerf; Daniel E. Bunker; Jana Bürger
  Global Change Biology, 26, 1, 119, 188, 01 Jan. 2020, [Peer-reviewed], [Invited], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal
• Brief experimental history of evaluation of the environmental environment (elevated CO2 and O3) on urban and suburb trees with use of a mini-FACE and flux monitoring towers
  小池, 孝良; 江口, 則和; 渡部, 敏裕; 市川, 一; 藤戸, 永志; 曲, 来葉; 渡辺, 誠; 渡邊, 陽子; アガトクレオス, エフゲニオス; 石, 聡; 北尾, 光俊; 高木, 健太郎; 日浦, 勉; 里村, 多賀美; 半, 智史; 船田, 良; 山﨑, 友紀; 佐藤, 冬樹
  Technical report for boreal forest conservation of the Hokkaido University Forests, 37, 18, 26, 北海道大学北方生物圏フィールド科学センター森林圏ステーション, Dec. 2019
  Japanese, Research institution
• The effect of snow reduction and Eisenia japonica earthworm traits on soil nitrogen dynamics in spring in a cool-temperate forest
  Kobayashi Makoto; Semyon Bryanin; Kentaro Takagi
  APPLIED SOIL ECOLOGY, 144, 1, 7, Dec. 2019, [Peer-reviewed], [Last author], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal
• Effects of forestry management and environmental factors on water and light use efficiencies in a cool-temperate mixed forest in northern Japan
  Keiji Okada; Kentaro Takagi; Yui Nishida
  JOURNAL OF AGRICULTURAL METEOROLOGY, 75, 4, 183, 192, Oct. 2019, [Peer-reviewed], [International Magazine]
  English, Scientific journal
• Enhancement of dry deposition of PM2.5 nitrate in a cool-temperate forest
  Akiyoshi Nakahara; Kentaro Takagi; Atsuyuki Sorimachi; Genki Katata; Kazuhide Matsuda
  ATMOSPHERIC ENVIRONMENT, 212, 136, 141, Sep. 2019, [Peer-reviewed], [International Magazine]
  English, Scientific journal
• An investigation of carbon dynamics in forest soils using isotopic signatures
  Atarashi-Andoh Mariko; Koarashi Jun; Takagi Kentaro; Kondo Toshiaki; Teramoto Munemasa; Nagano Hirohiko; Saito-Kokubu Yoko; Takagi Masahiro; Ishida Sachinobu; Liang Naishen
  The Japanese Forest Society Congress, 130, 349, THE JAPANESE FORESTRY SOCIETY, 27 May 2019
  Japanese, [in Japanese]
• What kind of effect does warming have on soil organic carbon?
  Koarashi Jun; Atarashi-Andoh Mariko; Takagi Kentaro; Kondo Toshiaki; Teramoto Munemasa; Nagano Hirohiko; Saito-Kokubu Yoko; Takagi Masahiro; Ishida Sachinobu; Hiradate Syuntaro; Liang Naishen
  The Japanese Forest Society Congress, 130, 704, THE JAPANESE FORESTRY SOCIETY, 27 May 2019
  Japanese, [in Japanese]
• Interannual and seasonal variations in ecosystem transpiration and water use efficiency in a tropical rainforest
  Maricar Aguilos; Clément Stahl; Benoit Burban; Bruno Hérault; Elodie Courtois; Sabrina Coste; Fabien Wagner; Camille Ziegler; Kentaro Takagi; Damien Bonal
  Forests, 10, 1, 26 Dec. 2018, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal
• 8 million phenological and sky images from 29 ecosystems from the Arctic to the tropics: the Phenological Eyes Network
  Shin Nagai; Tomoko Akitsu; Taku M. Saitoh; Robert C. Busey; Karibu Fukuzawa; Yoshiaki Honda; Tomoaki Ichie; Reiko Ide; Hiroki Ikawa; Akira Iwasaki; Koki Iwao; Koji Kajiwara; Sinkyu Kang; Yongwon Kim; Kho Lip Khoon; Alexander V. Kononov; Yoshiko Kosugi; Takahisa Maeda; Wataru Mamiya; Masayuki Matsuoka; Trofim C. Maximov; Annette Menzel; Tomoaki Miura; Toshie Mizunuma; Tomoki Morozumi; Takeshi Motohka; Hiroyuki Muraoka; Hirohiko Nagano; Taro Nakai; Tatsuro Nakaji; Hiroyuki Oguma; Takeshi Ohta; Keisuke Ono; Runi Anak Sylvester Pungga; Roman E. Petrov; Rei Sakai; Christian Schunk; Seikoh Sekikawa; Ruslan Shakhmatov; Yowhan Son; Atsuko Sugimoto; Rikie Suzuki; Kentaro Takagi; Satoru Takanashi; Shunsuke Tei; Satoshi Tsuchida; Hirokazu Yamamoto; Eri Yamasaki; Megumi Yamashita; Tae Kyung Yoon; Toshiya Yoshida; Mitsunori Yoshimura; Shinpei Yoshitake; Matthew Wilkinson; Lisa Wingate; Kenlo Nishida Nasahara
  ECOLOGICAL RESEARCH, 33, 6, 1091, 1092, Nov. 2018, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal
• A cool-temperate young larch plantation as a net methane source - A 4-year continuous hyperbolic relaxed eddy accumulation and chamber measurements
  Masahito Ueyama; Kota Yoshikawa; Kentaro Takagi
  ATMOSPHERIC ENVIRONMENT, 184, 110, 120, Jul. 2018, [Peer-reviewed], [Last author], [International Magazine]
  English, Scientific journal
• Evaluation of forest CO2 fluxes from sonde measurements in three different climatological areas including Borneo, Malaysia, and Iriomote and Hokkaido, Japan
  Shohei Nomura; Hitoshi Mukai; Yukio Terao; Kentaro Takagi; Maznorizan Mohamad; Mohad Firdaus Jahaya
  TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY, 70, 1, 1426316, Jan. 2018, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal
• Effect of climate warming on the annual terrestrial net ecosystem CO2 exchange globally in the boreal and temperate regions
  Zhiyuan Zhang; Renduo Zhang; Alessandro Cescatti; Georg Wohlfahrt; Nina Buchmann; Juan Zhu; Guanhong Chen; Fernando Moyano; Jukka Pumpanen; Takashi Hirano; Kentaro Takagi; Lutz Merbold
  SCIENTIFIC REPORTS, 7, 1, Jun. 2017, [Peer-reviewed]
  English, Scientific journal
• New data-driven estimation of terrestrial CO2 fluxes in Asia using a standardized database of eddy covariance measurements, remote sensing data, and support vector regression
  Kazuhito Ichii; Masahito Ueyama; Masayuki Kondo; Nobuko Saigusa; Joon Kim; Ma. Carmelita Alberto; Jonas Ardoe; Eugenie S. Euskirchen; Minseok Kang; Takashi Hirano; Joanna Joiner; Hideki Kobayashi; Luca Belelli Marchesini; Lutz Merbold; Akira Miyata; Taku M. Saitoh; Kentaro Takagi; Andrej Varlagin; M. Syndonia Bret-Harte; Kenzo Kitamura; Yoshiko Kosugi; Ayumi Kotani; Kireet Kumar; Sheng-Gong Li; Takashi Machimura; Yojiro Matsuura; Yasuko Mizoguchi; Takeshi Ohta; Sandipan Mukherjee; Yuji Yanagi; Yukio Yasuda; Yiping Zhang; Fenghua Zhao
  JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES, 122, 4, 767, 795, Apr. 2017, [Peer-reviewed]
  English, Scientific journal
• Networks Depicting the Fine-Scale Co-Occurrences of Fungi in Soil Horizons
  Hirokazu Toju; Osamu Kishida; Noboru Katayama; Kentaro Takagi
  PLOS ONE, 11, 11, Nov. 2016, [Peer-reviewed]
  English, Scientific journal
• Response of tree growth and wood structure of Larix kaempferi, Kalopanax septemlobus and Betula platyphylla saplings to elevated CO2 concentration for 5 years exposure in a FACE system
  Yoko Watanabe; Keita Wakabayashi; Satoshi Kitaoka; Takami Satomura; Norikazu Eguchi; Makoto Watanabe; Satoshi Nakaba; Kentaro Takagi; Yuzou Sano; Ryo Funada; Takayoshi Koike
  TREES-STRUCTURE AND FUNCTION, 30, 5, 1569, 1579, Oct. 2016, [Peer-reviewed]
  English, Scientific journal
• Continuous measurements of methane flux at various terrestrial ecosystems using laser-based analyzers
  Ueyama Masahito; Yoshikawa Kota; Futakuchi Yusuke; Takahashi Yoshiyuki; Takagi Kentaro; Kominami Yuji; Hirano Takashi; Yazaki Tomotsugu; Iwata Hiroki; Harazono Yoshinobu
  Abstracts of Annual Meeting of the Geochemical Society of Japan, 63, 87, 87, GEOCHEMICAL SOCIETY OF JAPAN, 2016
  Japanese,

• Photosynthetic traits of Siebold's beech seedlings in changing light conditions by removal of shading trees under elevated CO2
  M. Watanabe; S. Kitaoka; N. Eguchi; Y. Watanabe; T. Satomura; K. Takagi; F. Satoh; T. Koike
  PLANT BIOLOGY, 18, 56, 62, Jan. 2016, [Peer-reviewed]
  English, Scientific journal
• Response of a Wild Edible Plant to Human Disturbance: Harvesting Can Enhance the Subsequent Yield of Bamboo Shoots
  Noboru Katayama; Osamu Kishida; Rei Sakai; Shintaro Hayakashi; Chikako Miyoshi; Kinya Ito; Aiko Naniwa; Aya Yamaguchi; Katsunori Wada; Shiro Kowata; Yoshinobu Koike; Katsuhiro Tsubakimoto; Kenichi Ohiwa; Hirokazu Sato; Toru Miyazaki; Shinichi Oiwa; Tsubasa Oka; Shinya Kikuchi; Chikako Igarashi; Shiho Chiba; Yoko Akiyama; Hiroyuki Takahashi; Kentaro Takagi
  PLOS ONE, 10, 12, Dec. 2015, [Peer-reviewed]
  English, Scientific journal
• Ecophysiology of deciduous trees native to Northeast Asia grown under FACE (Free Air CO2 Enrichment)
  Takayoshi Koike; Makoto Watanabe; Yoko Watanabe; Evgenios Agathokleous; Norikazu Eguchi; Kentaro Takagi; Fuyuki Satoh; Satoshi Kitaoka; Ryo Funada
  JOURNAL OF AGRICULTURAL METEOROLOGY, 71, 3, 174, 184, Sep. 2015, [Peer-reviewed]
  English
• Roles of dominant understory Sasa bamboo in carbon and nitrogen dynamics following canopy tree removal in a cool-temperate forest in northern Japan
  Karibu Fukuzawa; Hideaki Shibata; Kentaro Takagi; Fuyuki Satoh; Takayoshi Koike; Kaichiro Sasa
  PLANT SPECIES BIOLOGY, 30, 2, 104, 115, Apr. 2015, [Peer-reviewed]
  English, Scientific journal
• Forest biomass and volume estimation using airborne LiDAR in a cool-temperate forest of northern Hokkaido, Japan
  Kentaro Takagi; Yasumichi Yone; Hiroyuki Takahashi; Rei Sakai; Hajime Hojyo; Tatsuya Kamiura; Mutsumi Nomura; Naishen Liang; Tatsuya Fukazawa; Hisashi Miya; Toshiya Yoshida; Kaichiro Sasa; Yasumi Fujinuma; Takeshi Murayama; Hiroyuki Oguma
  ECOLOGICAL INFORMATICS, 26, 54, 60, Mar. 2015, [Peer-reviewed]
  English, Scientific journal
• BAAD: a Biomass And Allometry Database for woody plants
  Falster Daniel S; Duursma Remko A; Ishihara Masae I; Barneche Diego R; FitzJohn Richard G; Vårhammar Angelica; Aiba Masahiro; Ando Makoto; Anten Niels; Aspinwall Michael J; Baltzer Jennifer L; Baraloto Christopher; Battaglia Michael; Battles John J; Bond-Lamberty Ben; van Breugel Michiel; Camac James; Claveau Yves; Coll Lluís; Dannoura Masako; Delagrange Sylvain; Domec Jean-Christophe; Fatemi Farrah; Feng Wang; Gargaglione Veronica; Goto Yoshiaki; Hagihara Akio; Hall Jefferson S; Hamilton Steve; Harja Degi; Hiura Tsutom; Holdaway Robert; Hutley Lindsay S; Ichie Tomoaki; Jokela Eric J; Kantola Anu; Kelly Jeff W. G; Kenzo Tanaka; King David; Kloeppel Brian D; Kohyama Takashi; Komiyama Akira; Laclau Jean-Paul; Lusk Christopher H; Maguire Douglas A; le Maire Guerric; Mäkelä Annikki; Markesteijn Lars; Marshall John; McCulloh Katherine; Miyata Itsuo; Mokany Karel; Mori Shigeta; Myster Randall W; Nagano Masahiro; Naidu Shawna L; Nouvellon Yann; O'Grady Anthony P; O'Hara Kevin L; Ohtsuka Toshiyuki; Osada Noriyuki; Osunkoya Olusegun O; Peri Pablo Luis; Petritan Any Mary; Poorter Lourens; Portsmuth Angelika; Potvin Catherine; Ransijn Johannes; Reid Douglas; Ribeiro Sabina C; Roberts Scott D; Rodríguez Rolando; Saldaña-Acosta Angela; Santa-Regina Ignacio; Sasa Kaichiro; Selaya N. Galia; Sillett Stephen C; Sterck Frank; Takagi Kentaro; Tange Takeshi; Tanouchi Hiroyuki; Tissue David; Umehara Toru; Utsugi Hajime; Vadeboncoeur Matthew A; Valladares Fernando; Vanninen Petteri; Wang Jian R; Wenk Elizabeth; Williams Richard; de Aquino; Ximenes Fabiano; Yamaba Atsushi; Yamada Toshihiro; Yamakura Takuo; Yanai Ruth D; York Robert A
  Ecology, 96, 5, 1445, 1445, 2015, [Peer-reviewed]
  English, Scientific journal
• Spatial and seasonal variations of CO2 flux and photosynthetic and respiratory parameters of larch forests in East Asia
  Kentaro Takagi; Ryuichi Hirata; Reiko Ide; Masahito Ueyama; Kazuhito Ichii; Nobuko Saigusa; Takashi Hirano; Jun Asanuma; Sheng-Gong Li; Takashi Machimura; Yuichiro Nakai; Takeshi Ohta; Yoshiyuki Takahashi
  SOIL SCIENCE AND PLANT NUTRITION, 61, 1, 61, 75, Jan. 2015, [Peer-reviewed]
  English, Scientific journal
• Dynamics of ecosystem carbon balance recovering from a clear-cutting in a cool-temperate forest
  Maricar Aguilos; Kentaro Takagi; Naishen Liang; Masahito Ueyama; Karibu Fukuzawa; Mutsumi Nomura; Osamu Kishida; Tatsuya Fukazawa; Hiroyuki Takahashi; Chikara Kotsuka; Rei Sakai; Kinya Ito; Yoko Watanabe; Yasumi Fujinuma; Yoshiyuki Takahashi; Takeshi Murayama; Nobuko Saigusa; Kaichiro Sasa
  AGRICULTURAL AND FOREST METEOROLOGY, 197, 26, 39, Oct. 2014, [Peer-reviewed]
  English, Scientific journal
• Photosynthetic traits and growth of Quercus mongolica var. crispula sprouts attacked by powdery mildew under free-air CO2 enrichment
  Makoto Watanabe; Satoshi Kitaoka; Norikazu Eguchi; Yoko Watanabe; Takami Satomura; Kentaro Takagi; Fuyuki Satoh; Takayoshi Koike
  EUROPEAN JOURNAL OF FOREST RESEARCH, 133, 4, 725, 733, Jul. 2014, [Peer-reviewed]
  English, Scientific journal
• 対流圏オゾンの森林への影響評価に関する研究概要: 札幌実験苗畑の例
  小池孝良; 渡辺 誠; 星加康智; 玉井 裕; 高木 健太郎; 市川 一; 門松昌彦; 佐藤冬樹
  北方森林保全技術, 32, 32, 34, Mar. 2014
  Japanese
• Estimation of evapotranspiration over the terrestrial ecosystems in China
  Xianglan Li; Shunlin Liang; Wenping Yuan; Guirui Yu; Xiao Cheng; Yang Chen; Tianbao Zhao; Jinming Feng; Zhuguo Ma; Mingguo Ma; Shaomin Liu; Jiquan Chen; Changliang Shao; Shenggong Li; Xudong Zhang; Zhiqiang Zhang; Ge Sun; Shiping Chen; Takeshi Ohta; Andrej Varlagin; Akira Miyata; Kentaro Takagi; Nobuko Saiqusa; Tomomichi Kato
  ECOHYDROLOGY, 7, 1, 139, 149, Feb. 2014, [Peer-reviewed]
  English, Scientific journal
• Wet surface resistance of forest canopy in monsoon Asia: Implications for eddy-covariance measurement of evapotranspiration
  J. Hong; K. Takagi; T. Ohta; Y. Kodama
  HYDROLOGICAL PROCESSES, 28, 1, 37, 42, Jan. 2014, [Peer-reviewed]
  English, Scientific journal
• The impact of climate variation and disturbances on the carbon balance of forests in Hokkaido, Japan
  R. Hirata; K. Takagi; A. Ito; T. Hirano; N. Saigusa
  BIOGEOSCIENCES, 11, 18, 5139, 5154, 2014, [Peer-reviewed]
  English, Scientific journal
• Quantifying the effects of clear-cutting and strip-cutting on nitrate dynamics in a forested watershed using triple oxygen isotopes as tracers
  U. Tsunogai; D. D. Komatsu; T. Ohyama; A. Suzuki; F. Nakagawa; I. Noguchi; K. Takagi; M. Nomura; K. Fukuzawa; H. Shibata
  BIOGEOSCIENCES, 11, 19, 5411, 5424, 2014, [Peer-reviewed]
  English, Scientific journal
• Temporal variation in fine-root biomass, production and mortality in a cool temperate forest covered with dense understory vegetation in northern Japan
  Karibu Fukuzawa; Hideaki Shibata; Kentaro Takagi; Fuyuki Satoh; Takayoshi Koike; Kaichiro Sasa
  FOREST ECOLOGY AND MANAGEMENT, 310, 700, 710, Dec. 2013, [Peer-reviewed]
  English, Scientific journal
• Elevated CO2 enhances the growth of hybrid larch F-1 (Larix gmelinii var. japonica x L-kaempferi) seedlings and changes its biomass allocation
  Makoto Watanabe; Qiaozhi Mao; Eka Novriyanti; Kazuhito Kita; Kentaro Takagi; Fuyuki Satoh; Takayoshi Koike
  TREES-STRUCTURE AND FUNCTION, 27, 6, 1647, 1655, Dec. 2013, [Peer-reviewed]
  English, Scientific journal
• Estimation of gross primary production over the terrestrial ecosystems in China
  Xianglan Li; Shunlin Liang; Guirui Yu; Wenping Yuan; Xiao Cheng; Jiangzhou Xia; Tianbao Zhao; Jinming Feng; Zhuguo Ma; Mingguo Ma; Shaomin Liu; Jiquan Chen; Changliang Shao; Shenggong Li; Xudong Zhang; Zhiqiang Zhang; Shiping Chen; Takeshi Ohta; Andrej Varlagin; Akira Miyata; Kentaro Takagi; Nobuko Saiqusa; Tomomichi Kato
  ECOLOGICAL MODELLING, 261, 80, 92, Jul. 2013, [Peer-reviewed]
  English, Scientific journal
• Dataset of CarboEastAsia and uncertainties in the CO2 budget evaluation caused by different data processing
  Nobuko Saigusa; Sheng-Gong Li; Hyojung Kwon; Kentaro Takagi; Lei-Ming Zhang; Reiko Ide; Masahito Ueyama; Jun Asanuma; Young-Jean Choi; Jung Hwa Chun; Shi-Jie Han; Takashi Hirano; Ryuichi Hirata; Minseok Kang; Tomomichi Kato; Joon Kim; Ying-Nian Li; Takahisa Maeda; Akira Miyata; Yasuko Mizoguchi; Shohei Murayama; Yuichiro Nakai; Takeshi Ohta; Taku M. Saitoh; Hui-Ming Wang; Gui-Rui Yu; Yi-Ping Zhang; Feng-Hua Zhao
  JOURNAL OF FOREST RESEARCH, 18, 1, 41, 48, Feb. 2013, [Peer-reviewed]
  English, Scientific journal
• Site-level model-data synthesis of terrestrial carbon fluxes in the CarboEastAsia eddy-covariance observation network: toward future modeling efforts
  Kazuhito Ichii; Masayuki Kondo; Young-Hee Lee; Shao-Qiang Wang; Joon Kim; Masahito Ueyama; Hee-Jeong Lim; Hao Shi; Takashi Suzuki; Akihiko Ito; Hyojung Kwon; Weimin Ju; Mei Huang; Takahiro Sasai; Jun Asanuma; Shijie Han; Takashi Hirano; Ryuichi Hirata; Tomomichi Kato; Sheng-Gong Li; Ying-Nian Li; Takahisa Maeda; Akira Miyata; Yojiro Matsuura; Shohei Murayama; Yuichiro Nakai; Takeshi Ohta; Taku M. Saitoh; Nobuko Saigusa; Kentaro Takagi; Yan-Hong Tang; Hui-Min Wang; Gui-Rui Yu; Yi-Ping Zhang; Feng-Hua Zhao
  JOURNAL OF FOREST RESEARCH, 18, 1, 13, 20, Feb. 2013, [Peer-reviewed]
  English, Scientific journal
• Sustained large stimulation of soil heterotrophic respiration rate and its temperature sensitivity by soil warming in a cool-temperate forested peatland
  Maricar Aguilos; Kentaro Takagi; Naishen Liang; Yoko Watanabe; Munemasa Teramoto; Seijiro Goto; Yoshiyuki Takahashi; Hitoshi Mukai; Kaichiro Sasa
  TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY, 65, 2013, [Peer-reviewed]
  English, Scientific journal
• Sustained large stimulation of soil heterotrophic respiration rate and its temperature sensitivity by soil warming in a cool-temperate forested peatland
  Aguilos Maricar; Takagi Kentaro; Liang Naishen; Watanabe Yoko; Teramoto Munemasa; Goto Seijiro; Takahashi Yoshiyuki; Mukai Hitoshi; Sasa Kaichiro
  TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY, 65, 2013, [Peer-reviewed]
• Effect of nitrogen load on growth and photosynthesis of seedlings of the hybrid larch F-1 (Larix gmelinii var. japonica x L. kaempferi) grown on serpentine soil
  Makoto Watanabe; Koharu Ryu; Kazuhito Kita; Kentaro Takagi; Takayoshi Koike
  ENVIRONMENTAL AND EXPERIMENTAL BOTANY, 83, 73, 81, Nov. 2012, [Peer-reviewed]
  English, Scientific journal
• CO2 flux estimation for a valley terrain using the atmospheric boundary layer method
  Keiji Okada; Naoya Okada; Shinichi Urano; Yui Nishida; Kentaro Takagi; Maricar Aguilos; Taiyo Kobayash
  Journal of Agricultural Meteorology, 68, 3, 165, 174, 01 Sep. 2012, [Peer-reviewed]
  English, Scientific journal
• Enhanced annual litterfall production due to spring solar radiation in cool-temperate mixed forests of Northern Hokkaido, Japan
  Maricar M. Aguilos; Kentaro Takagi; Hiroyuki Takahashi; Junko Hasegawa; Daitaro Ashiya; Chikara Kotsuka; Aiko Naniwa; Rei Sakai; Kinya Ito; Chikako Miyoshi; Mutsumi Nomura; Shigeru Uemura; Kaichiro Sasa
  Journal of Agricultural Meteorology, 68, 4, 215, 224, 01 Sep. 2012, [Peer-reviewed]
  English, Scientific journal
• Contribution of charcoal to short-term nutrient dynamics after surface fire in the humus layer of a dwarf bamboo-dominated forest
  K. Makoto; H. Shibata; Y. S. Kim; T. Satomura; K. Takagi; M. Nomura; F. Satoh; T. Koike
  BIOLOGY AND FERTILITY OF SOILS, 48, 5, 569, 577, Jul. 2012, [Peer-reviewed]
  English, Scientific journal
• Does canopy mean nitrogen concentration explain variation in canopy light use efficiency across 14 contrasting forest sites?
  Mikko Peltoniemi; Minna Pulkkinen; Pasi Kolari; Remko A. Duursma; Leonardo Montagnani; Sonia Wharton; Fredrik Lagergren; Kentaro Takagi; Hans Verbeeck; Torben Christensen; Timo Vesala; Matthias Falk; Denis Loustau; Annikki Makela
  TREE PHYSIOLOGY, 32, 2, 200, 218, Feb. 2012, [Peer-reviewed]
  English, Scientific journal
• Estimation of evapotranspiration over the terrestrial ecosystems in China
  Li Xianglan; Liang Shunlin; Yuan Wenping; Yu Guirui; Cheng Xiao; Chen Yang; Zhao Tianbao; Feng Jinming; Ma Zhuguo; Ma Mingguo; Liu Shaomin; Chen Jiquan; Shao Changliang; Li Shenggong; Zhang Xudong; Zhang Zhiqiang; Sun Ge; Chen Shiping; Ohta Takeshi; Varlagin Andrej; Miyata Akira; Takagi Kentaro; Saiqusa Nobuko; Kato Tomomich
  Ecohydrology, n/a, 2012, [Peer-reviewed]
• Latent heat flux estimation using closed-path and low-frequency water vapor concentration sensors
  TAKAGI Kentaro
  Journal of Agricultural Meteorology， Hokkaido, 64, 4, 12, 2012, [Peer-reviewed]
  Japanese, Scientific journal
• Deposition of aerosols on leaves in a cool-temperate larch forest in Northern Hokkaido, Japan
  Fukazawa Tatsuya; Murao Naoto; Sato Hisashi; Takahashi Masahiro; Akiyama Masayuki; Yamaguchi Takashi; Noguchi Izumi; Takahashi Hiroyuki; Kozuka Chikara; Sakai Rei; Takagi Kentaro; Fujinuma Yasumi; Saigusa Nobuko; Matsuda Kazuhide
  Asian Journal of Atmospheric Environment, 6, 4, 281, 287, Korean Society for Atmospheric Environment, 2012, [Peer-reviewed]
  English, Scientific journal
• Influences of various calculation options on heat, water and carbon fluxes determined by open- and closed-path eddy covariance methods
  Masahito Ueyama; Ryuichi Hirata; Masayoshi Mano; Ken Hamotani; Yoshinobu Harazono; Takashi Hirano; Akira Miyata; Kentaro Takagi; Yoshiyuki Takahashi
  TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY, 64, 2012, [Peer-reviewed]
  English, Scientific journal
• Greenhouse gas emissions after a prescribed fire in white birch-dwarf bamboo stands in northern Japan, focusing on the role of charcoal
  Yong Suk Kim; Kobayashi Makoto; Fumiaki Takakai; Hideaki Shibata; Takami Satomura; Kentaro Takagi; Ryusuke Hatano; Takayoshi Koike
  EUROPEAN JOURNAL OF FOREST RESEARCH, 130, 6, 1031, 1044, Nov. 2011, [Peer-reviewed]
  English, Scientific journal
• Satellite-driven estimation of terrestrial carbon flux over Far East Asia with 1-km grid resolution
  Takahiro Sasai; Nobuko Saigusa; Kenlo Nishida Nasahara; Akihiko Ito; Hirofumi Hashimoto; Ramakrishna Nemani; Ryuichi Hirata; Kazuhito Ichii; Kentaro Takagi; Taku M. Saitoh; Takeshi Ohta; Kazutaka Murakami; Yasushi Yamaguchi; Takehisa Oikawa
  REMOTE SENSING OF ENVIRONMENT, 115, 7, 1758, 1771, Jul. 2011, [Peer-reviewed]
  English, Scientific journal
• Soil warming in a cool-temperate mixed forest with peat soil enhanced heterotrophic and basal respiration rates but Q10 remained unchanged
  Aguilos, M; Takagi, K; Liang, N; Watanabe, Y; Goto, S; Takahashi, Y; Mukai, H; Sasa, K
  Biogeosciences Discussion, 8, 6415, 6445, 2011, [Peer-reviewed]
  English, Scientific journal
• Spatial variations in evapotranspiration over East Asian forest sites. II. Surface conductance and aerodynamic conductance
  Khatun, R; Ohta, T; Kotani, A; Asanuma, J; Gamo, M; Han, S; Hirano, T; Nakai, Y; Saigusa, N; Takagi, K; Wang, H; Yoshifuji, N
  Hydrological Research Letters, 5, 88, 92, THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES, 2011, [Peer-reviewed]
  English, Scientific journal, Evapotranspiration over forest surfaces is mainly constrained by environmental and forest structural components through their influence on surface conductance (G_s) and aerodynamic conductance (G_a). Tower based eddy covariance data from 16 forest sites in East Asia (2°S to 64°N) were used to examine the sensitivity of Matsumoto and Nakai models for predicting G_s and G_a, respectively. Daytime dry-canopy data for the growing season were used in this study. Comparisons between model predictions and observed G_s and G_a showed good agreement, suggesting that the models were suitable for predicting G_s and G_a with reasonable accuracy. However, the model for G_s was unable to predict G_s accurately when soil water content was low (∼10%). In this circumstance, effective soil water content and a more comprehensive method for modelling the soil water content function must be used. G_s in East Asia was largely depended on vapour pressure deficit and secondarily on soil water content. G_a was largely affected by leaf area index compared with stand density.
  
• Spatial variations in evapotranspiration over East Asian forest sites. I. Evapotranspiration and decoupling coefficient
  KHATUN Rehana; OHTA Takeshi; KOTANI Ayumi; ASANUMA Jun; GAMO Minoru; HAN Shijie; HIRANO Takashi; NAKAI Yuichiro; SAIGUSA Nobuko; TAKAGI Kentaro; WANG Huimin; YOSHIFUJI Natsuko
  Hydrological Research Letters, 5, 83, 87, THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES, 2011, [Peer-reviewed]
  English, Scientific journal, Evapotranspiration (ET) is not only a vital component of water budget, but also plays an important role in the energy budget of the earth-atmospheric system, ultimately driving many regional and global scale climatological processes. This paper describes the ET characteristics and factors controlling ET across the 17 forest sites in East Asia (2°S to 64°N latitude). ET was measured using the eddy covariance technique at each site. Daytime dry-canopy data for the growing season were used in this study. Growing season mean ET gradually decreased as latitude increased, with a range of 4.4 to 1.2 mm d⁻¹. The growing season mean decoupling coefficient (Ω) ranged from 0.42 to 0.11 across the studied sites. At low-latitude forest sites, Ω was close to 0.50, indicating that the bulk surface was partially decoupled from the atmosphere and ET was strongly controlled by net radiation and vapour pressure deficit. At high-latitude forest sites, Ω was low (∼0.12), indicating that the bulk surface was well coupled to the atmosphere and ET was mainly controlled by surface conductance. The value of Ω was determined mainly by the ratio of aerodynamic conductance to surface conductance across the studied forests of East Asia.
  
• Reduced atmospheric CH4 consumption by two forest soils under elevated CO2 concentration in a FACE system in northern Japan
  Kim, Y.S; Watanabe, M; Imori, M; Sasa, K; Takagi, K; Hatano, R; Koike, T
  Journal of Japan Society for Atmospheric Environment, 46, 1, 30, 36, 大気環境学会, 2011, [Peer-reviewed]
  English, Scientific journal
• Simulating carbon and water cycles of larch forests in East Asia by the BIOME-BGC model with AsiaFlux data
  Ueyama M.; Ichii K.; Hirata R.; Takagi K.; Asanuma J.; Machimura T.; Nakai Y.; Ohta T.; Saigusa N.; Takahashi Y.; Hirano T.
  Biogeosciences, 7, 3, 959, 977, Copernicus Publications, 10 Mar. 2010
  English, Larch forests are widely distributed across many cool-temperate and boreal regions, and they are expected to play an important role in global carbon and water cycles. Model parameterizations for larch forests still contain large uncertainties owing to a lack of validation. In this study, a process-based terrestrial biosphere model, BIOME-BGC, was tested for larch forests at six AsiaFlux sites and used to identify important environmental factors that affect the carbon and water cycles at both temporal and spatial scales. The model simulation performed with the default deciduous conifer parameters produced results that had large differences from the observed net ecosystem exchange (NEE), gross primary productivity (GPP), ecosystem respiration (RE), and evapotranspiration (ET). Therefore, we adjusted several model parameters in order to reproduce the observed rates of carbon and water cycle processes. This model calibration, performed using the AsiaFlux data, substantially improved the model performance. The simulated annual GPP, RE, NEE, and ET from the calibrated model were highly consistent with observed values. The observed and simulated GPP and RE across the six sites were positively correlated with the annual mean air temperature and annual total precipitation. On the other hand, the simulated carbon budget was partly explained by the stand disturbance history in addition to the climate. The sensitivity study indicated that spring warming enhanced the carbon sink, whereas summer warming decreased it across the larch forests. The summer radiation was the most important factor that controlled the carbon fluxes in the temperate site, but the VPD and water conditions were the limiting factors in the boreal sites. One model parameter, the allocation ratio of carbon between belowground and aboveground, was site-specific, and it was negatively correlated with the annual climate of annual mean air temperature and total precipitation. Although this study substantially improved the model performance, the uncertainties that remained in terms of the sensitivity to water conditions should be examined in ongoing and long-term observations.
• Multi-model analysis of terrestrial carbon cycles in Japan: limitations and implications of model calibration using eddy flux observations
  Ichii K; Suzuki T; Kato T; Ito A; Hajima T; Ueyama M; Sasai T; Hirata R; Saigusa N; Ohtani Y; Takagi K
  Biogeosciences, 7, 7, 2061, 2080, 2010, [Peer-reviewed]
  Scientific journal
• Factors controlling soil respiration in a riparian zone in northern Hokkaido
  KATO Sho; OKADA Keiji; TAKAGI Kentaro; URANO Shin-ichi
  Journal of Agricultural Meteorology， Hokkaido, 62, 11, 18, 2010, [Peer-reviewed]
  Japanese, Scientific journal
• Atmospheric behavior of nitrous acid and nitrogen dioxide in northern Japan
  Izumi Noguchi; Kentaro Hayashi; Takunori Kato; Takashi Yamaguchi; Masayuki Akiyama; Hideyuki Otsuka; Shigekatsu Sakai; Kentaro Takagi; Tatsuya Fukazawa; Hideaki Shibata; Yasumi Fujinuma; Nobuko Saigusa; Minoru Shimotori; Tomomi Endo; Hiroaki Yago; Kazuhide Matsuda; Urumu Tsunogai; Hiroshi Hara
  Journal of Japan Society for Atmospheric Environment, 45, 4, 153, 165, Japan Society for Atmospheric Environment, 2010, [Peer-reviewed]
  Japanese, Scientific journal, The atmospheric behavior of nitrous acid, HONO, was discussed on the basis of field measurements by an annular-denuder or a filter-pack method at four different nature sites in northern Japan, Sapporo (urban), Moshiri (rural), Rishiri (coastal remote) and Teshio (mountainous remote), in terms of their atmospheric chemistry parameters including nitrogen oxides, nitric acid, nitrate aerosol and ozone. The annual mean concentrations of HONO in Sapporo ranged from 36 to 41 nmol m^-3 where the concentration level was 11 to 31 times higher than those for the other sites. A different seasonality of the HONO concentration was detected at the different nature site: the urban site showed a maximum in the winter, the remote in the summer, and the rural in the winter and the summer. A heterogeneous reaction between NO₂ and H₂O on the surface of airborne particles and the ground surface is likely to play a significant role in the nitrous acid formation because the HONO/NOx ratio in ambient air is higher than those by direct emission as reported by Kurtenbach et al. (2001). In the case of the ground-surface heterogeneous reaction, the concentration gradient of HONO is expected to negative correlate with that of NO₂ because the deposition of NO₂ would induce emissions of HONO into the atmosphere. Actually, in Teshio, the difference between the concentrations of HONO at the heights of 30 m and 10 m positive correlated with that for NO₂. Furthermore, the Rishiri measurements showed a significant correlation between the concentrations of HONO and PM₁₀. In addition, Rishiri and Moshiri measurements showed significant correlations between the concentration ratio, HONO/NO₂, and absolute humidity. These results strongly support the view that the heterogeneous reactions on the airborne particles prevails in the formation of HONO in the rural and remote areas with considerably low concentrations of NO₂. On the other hand, the heterogeneous reaction on the ground-surface reaction plays a significant role in Sapporo, especially in the winter with high NO₂ concentrations. In Sapporo, negative correlations were detected in the winter between the concentrations of HONO and NO, and between of HNO₃ and O₃, which would be attributable to the insufficient conversion of NO₂ to HNO₃, and further to nitrate species, under urban conditions because of the low concentration of ozone along with high concentrations of NO. These field measurements would indicate that the behavior of nitrous acid is controlled by the chemical reactions of NO₂ with H₂O, and that this heterogeneous reaction was affected by the NO₂ concentration, absolute humidity and O₃ concentration.
• Multi-model analysis of terrestrial carbon cycles in Japan: reducing uncertainties in model outputs among different terrestrial biosphere models using flux observations
  Ichii, K; Suzuki, T; Kato, T; Ito, A; Hajima, T; Ueyama, M; Sasai, T; Hirata, R; Saigusa, N; Ohtani, Y; Takagi, K
  Biogeosciences, 7, 7, 2061, 2085, 2010, [Peer-reviewed]
  English, Scientific journal
• Allometric relationships and carbon and nitrogen contents for three major tree species (Quercus crispula, Betula ermanii, and Abies sachalinensis) in northern Hokkaido, Japan
  Takagi, K; Kotsuka, C; Fukuzawa, K; Kayama, M; Makoto, K; Watanabe, T; Nomura, M; Fukazawa, T; Takahashi, H; Hojyo, H; Ashiya, D; Naniwa, A; Sugata, S; Kamiura T; Sugishita Y; Sakai, R; Ito, K; Kobayashi, M; Maebayashi, M; Mizuno, M; Murayama, T; Kinoshita, K; Fujiwara, D; Hashida, S; Shibata, H; Yoshida, T; Sasa, K; Saigusa, N; Fujinuma, Y; Akibayashi, Y
  Eurasian Journal of Forest Research, 13, 1, 7, 2010, [Peer-reviewed]
  English, Scientific journal
• Simulating carbon and water cycles of larch forests in East Asia by the BIOME-BGC model with AsiaFlux data
  M. Ueyama; K. Ichii; R. Hirata; K. Takagi; J. Asanuma; T. Machimura; Y. Nakai; T. Ohta; N. Saigusa; Y. Takahashi; T. Hirano
  BIOGEOSCIENCES, 7, 3, 959, 977, 2010, [Peer-reviewed]
  English, Scientific journal
• Ecophysiological responses of the larch species in northern Japan to environmental changes as a basis for afforestation
  K. Ryu; M. Watanabe; H. Shibata; K. Takagi; M. Nomura; Takayoshi Koike
  LANDSCAPE AND ECOLOGICAL ENGINEERING, 5, 2, 99, 106, Jul. 2009, [Peer-reviewed]
  English, Scientific journal
• Ammonia Emission from a Young Larch Ecosystem Afforested after Clear-Cutting of a Pristine Forest in Northernmost Japan
  Kentaro Hayashi; Kentaro Takagi; Izumi Noguchi; Karibu Fukuzawa; Hiroyuki Takahashi; Tatsuya Fukazawa; Hideaki Shibata; Yasumi Fujinuma
  WATER AIR AND SOIL POLLUTION, 200, 1-4, 33, 46, Jun. 2009, [Peer-reviewed]
  English, Scientific journal
• Change in CO2 balance under a series of forestry activities in a cool-temperate mixed forest with dense undergrowth
  Kentaro Takagi; Karibu Fukuzawa; Naishen Liang; Masazumi Kayama; Mutsumi Nomura; Hajime Hojyo; Sadao Sugata; Hideaki Shibata; Tatsuya Fukazawa; Yoshiyuki Takahashi; Tatsuro Nakaji; Hiroyuki Oguma; Masayoshi Mano; Yukio Akibayashi; Takeshi Murayama; Takayoshi Koike; Kaichiro Sasa; Yasumi Fujinuma
  GLOBAL CHANGE BIOLOGY, 15, 5, 1275, 1288, May 2009, [Peer-reviewed]
  English, Scientific journal
• Microbial respiration and carbon balance in forest soils under global warming
  Liang Naishen; Nakane Kaneyuki; Kakubari Yoshitaka; Takagi Kentaro; Ishida Hironobu; Takagi Masahiro
  Abstracts of Annual Meeting of the Geochemical Society of Japan, 56, 240, 240, GEOCHEMICAL SOCIETY OF JAPAN, 2009
  北海道手塩から宮崎県綾瀬に至る、6ヶ所の森林で、2007～2008年から呼吸測定チャンバーを設置し、赤外線ヒーターで土壌温度を約3℃上昇させ、土壌（微生物）呼吸速度を1時間単位で測定した。また、オープントップチャンバーを用いて高CO2濃度、高温環境下で、植栽したアラカシ群落の土壌炭素のフローを2007～2008年に測定した。土壌温度に対する微生物の反応（Q10）は従来のモデルに使用されている最高値（2.2）より高かった。オープントップチャンバーでの実験結果から、土壌の炭素収支は現環境区を基準とした場合、高温・高CO2濃度区では大きなマイナスとなり、予測される温暖化環境下では、森林の土壌炭素収支が大きく放出に転換することが示唆された。
• Effect of nocturnal advection in a small valley on the vegetation-atmosphere CO2 flux
  OKADA Keiji; KATSURA Akihito; TAKAGI Kentaro; URANO Shin-ichi
  Journal of Agricultural Meteorology， Hokkaido, 61, 11, 18, 2009, [Peer-reviewed]
  Japanese, Scientific journal
• Summer relative humidity in northern Japan inferred from δ ¹⁸O values of the tree ring in (1776-2002 A.D.): Influence of the paleoclimate indices of atmospheric circulation
  Hiroyuki Tsuji; Takeshi Nakatsuka; Koji Yamazaki; Kentaro Takagi
  Journal of Geophysical Research Atmospheres, 113, 18, Blackwell Publishing Ltd, 27 Sep. 2008, [Peer-reviewed]
  English, Scientific journal
• Summer relative humidity in northern Japan inferred from delta O-18 values of the tree ring in (1776-2002 AD): Influence of the paleoclimate indices of atmospheric circulation
  Hiroyuki Tsuji; Takeshi Nakatsuka; Koji Yamazaki; Kentaro Takagi
  JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 113, D18, Sep. 2008, [Peer-reviewed]
  English, Scientific journal
• Photosynthetic responses of birch and alder saplings grown in a free air CO2 enrichment system in northern Japan
  Norikazu Eguchi; Kazuki Karatsu; Tatsushiro Ueda; Ryo Funada; Kentaro Takagi; Tsutom Hiura; Kaichiro Sasa; Takayoshi Koike
  TREES-STRUCTURE AND FUNCTION, 22, 4, 437, 447, Aug. 2008, [Peer-reviewed]
  English, Scientific journal
• Spatial distribution of carbon balance in forest ecosystems across East Asia
  Ryuichi Hirata; Nobuko Saigusa; Susumu Yamamoto; Yoshikazu Ohtani; Reiko Ide; Jun Asanuma; Minoru Gamo; Takashi Hirano; Hiroaki Kondo; Yoshiko Kosugi; Sheng-Gong Li; Yuichiro Nakai; Kentaro Takagi; Makoto Tani; Huimin Wang
  AGRICULTURAL AND FOREST METEOROLOGY, 148, 5, 761, 775, May 2008, [Peer-reviewed]
  English, Scientific journal
• Temporal and spatial variations in the seasonal patterns of CO2 flux in boreal, temperate, and tropical forests in East Asia
  Nobuko Saigusa; Susumu Yamamoto; Ryuichi Hirata; Yoshikazu Ohtani; Reiko Ide; Jun Asanuma; Minoru Gamo; Takashi Hirano; Hiroaki Kondo; Yoshiko Kosugi; Sheng-Gong Li; Yuichiro Nakai; Kentaro Takagi; Makoto Tani; Huimin Wang
  AGRICULTURAL AND FOREST METEOROLOGY, 148, 5, 700, 713, May 2008, [Peer-reviewed]
  English, Scientific journal
• Utility of spectral vegetation indices for estimation of light conversion efficiency in coniferous forests in Japan
  Tatsuro Nakaji; Reiko Ide; Kentaro Takagi; Yoshiko Kosugi; Shinjiro Ohkubo; Kenlo Nishida Nasahara; Nobuko Saigusa; Hiroyuki Oguma
  AGRICULTURAL AND FOREST METEOROLOGY, 148, 5, 776, 787, May 2008, [Peer-reviewed]
  English, Scientific journal
• Changes in petiole hydraulic properties and leaf water flow in birch and oak saplings in a CO2-enriched atmosphere
  Norikazu Eguchi; Noriko Morii; Tatsushiro Ueda; Ryo Funada; Kentaro Takagi; Tsutom Hiura; Kaichiro Sasa; Takayoshi Koike
  TREE PHYSIOLOGY, 28, 2, 287, 295, Feb. 2008, [Peer-reviewed]
  English, Scientific journal
• Vertical distribution and seasonal pattern of fine-root dynamics in a cool-temperate forest in northern Japan: implication of the understory vegetation, Sasa dwarf bamboo
  Karibu Fukuzawa; Hideaki Shibata; Kentaro Takagi; Fuyuki Satoh; Takayoshi Koike; Kaichiro Sasa
  ECOLOGICAL RESEARCH, 22, 3, 485, 495, May 2007, [Peer-reviewed]
  English, Scientific journal
• Measuring concentrations of Nitrous Acid gas by Filter-Pack Sampling Method.
  Izumi NOGUCHI; Hideyuki OTSUKA; Masayuki AKIYAMA; Shigekatsu SAKAI; Kentaro TAKAGI; Takunori KATO
  Journal of Japan Society for Atomospheric Environment, 42, 3, 162, 174, Japan Society for Atmospheric Environment, 2007, [Peer-reviewed]
  Japanese, The filter-pack method is generally used for the measurement of soluble ion components in aerosol, sulfur dioxide, nitric acid gas, hydrocloric acid gas, and ammonia gas in the air. In this study, the simultaneous measurement of nitrous acid gas using double alkaline impregnated filters of the filter-pack method is being considered for the first time. The filter pack contains five filters, i.e., a Teflon filter, a nylon filter, a first alkaline-impregnated filter, a second alkaline-impregnated filter, and an acid-impregnated filter. In a laboratory experiment, it was found that artifact formation of nitrate and nitrite ions, representing below 1% of the concentration of nitrogen dioxides, occurs in the alkaline-impregnated filter. Thus, the interference on nitrogen dioxides can be estimated from the NO_2^- and NO_3^- content of the second alkaline-impregnated filter. This principle is similar to that of an annular denuder method. In addition, a parallel survey using the filter-pack method and the annular denuder method, which is generally used for the measurement of nitrous acid gas, was carried out in the field for three and half years beginning in October 2003. This was done in order to measure the weekly concentrations of nitrous acid gas in Sapporo. The results showed that nitrous acid concentrations obtained using the two methods were in good agreement because both concentrations were highly correlated (r=0.95); moreover the slope of the correlation curve was close to 1.0, and the intercept was shown to be small: i.e., y=1.09x + 2.28. Thus, it was concluded that the filter-pack method is useful for the monitoring of air pollutants including nitrous acid gas like an annular denuder method.
• Evaluation of the transpiration rate of lotus using the stem heat-balance method
  Kentaro Takagi; Yoshinobu Harazono; Shin-ichi Noguchi; Akira Miyata; Masayoshi Mano; Masashi Komine
  AQUATIC BOTANY, 85, 2, 129, 136, Aug. 2006, [Peer-reviewed]
  English, Scientific journal
• delta O-18 of tree-ring cellulose in two species (spruce and oak) as proxies of precipitation amount and relative humidity in northern Japan
  Hiroyuki Tsuji; Takeshi Nakatsuka; Kentaro Takagi
  CHEMICAL GEOLOGY, 231, 1-2, 67, 76, Jul. 2006, [Peer-reviewed]
  English, Scientific journal
• Effects of clear-cutting on nitrogen leaching and fine root dynamics in a cool-temperate forested watershed in northern Japan
  K Fukuzawa; H Shibata; K Takagi; M Nomura; N Kurima; T Fukazawa; F Satoh; K Sasa
  FOREST ECOLOGY AND MANAGEMENT, 225, 1-3, 257, 261, Apr. 2006, [Peer-reviewed]
  English, Scientific journal
• CO2 emissions of the non-tree vegetation cover in larch (Larix gmelinii (Rupr.)Rupr.) stands in the central Evenkia region of Siberia, Russia
  Masyagina, O.V; Prokushkin, S.G; Mori, S; Takagi, K; Nomura, M; Abaimov, A
  Eurasian Journal of Forest Research, 9, 1, 17, 28, Hokkaido University Forests, EFRC, 2006, [Peer-reviewed]
  English, Scientific journal, Articles
• Carbon cycling and budget in a forested basin of southwestern Hokkaido, northern Japan
  Hideaki Shibata; Tsutom Hiura; Yumiko Tanaka; Yumiko Tanaka; Kentaro Takagi; Takayoshi Koike
  Forest Ecosystems and Environments: Scaling Up from Shoot Module to Watershed, 89, 95, 01 Dec. 2005
• Carbon cycling and budget in a forested basin of southwestern Hokkaido, northern Japan
  H Shibata; T Hiura; Y Tanaka; K Takagi; T Koike
  ECOLOGICAL RESEARCH, 20, 3, 325, 331, May 2005, [Peer-reviewed]
  English, Scientific journal
• Dynamic carbon dioxide exchange through snowpack by wind-driven mass transfer in a conifer-broadleaf mixed forest in northernmost Japan
  K Takagi; M Nomura; D Ashiya; H Takahashi; K Sasa; Y Fujinuma; H Shibata; Y Akibayashi; T Koike
  GLOBAL BIOGEOCHEMICAL CYCLES, 19, 2, GB2012, Apr. 2005, [Peer-reviewed]
  English, Scientific journal
• Effect of collar insertion on soil respiration in a larch forest measured with a LI-6400 soil CO2 flux system
  WJ Wang; YG Zu; HM Wang; T Hirano; K Takagi; K Sasa; T Koike
  JOURNAL OF FOREST RESEARCH, 10, 1, 57, 60, Feb. 2005, [Peer-reviewed]
  English, Scientific journal
• Effect of tree cutting and sasa stripe-cutting on nutrient cycling and fine root dynamics in temperate forest watershed in northern Hokkaido
  Fukuzawa Karibu; Shibata Hideaki; Takagi Kentaro; Nomura Mutsuki; Kurima Noriko; Fukazawa Tatsuya; Satoh Fuyuki; Sasa Kaichiro
  The Japanese Forest Society Congress, 116, 346, 346, The Japanese Forest Society, 2005
• Deforestation effects on the micrometeorology in a cool-temperate forest in northern Japan
  Takagi, K; Nomura, M; Fukuzawa, K; Kayama, M; Shibata, H; Sasa, K; Koike, T; Akibayashi, Y; Fujinuma, Y; Inukai, K; Maebayashi, M
  Journal of Agricultural Meteorology, 60, 5, 1025, 1028, 日本農業気象学会, 2005, [Peer-reviewed]
  English, Scientific journal
• Soil moisture condition and growth of deciduous tree seedlings native to northern Japan grown under elevated CO2 with a FACE system
  N. Eguchi; R. Funada; T. Ueda; K. Takagi; T. Hiura; K. Sasa; T. Koike
  PHYTON-ANNALES REI BOTANICAE, 45, 4, 133, 138, 2005, [Peer-reviewed]
  English, Scientific journal
• Process of larch plantation in northern Japan and development of hybrid larch (F1) for overcoming biological stress
  Koike, T; Kuromaru, M; Qu, L.Y; Choi, D.S; Takagi, K; Masyagina, O.V; Wang, W.J; Sasa, K
  2th International congress of Forest bioactive resources, 63, 65, 2004
• CO2 control in a FACE system for tree saplings
  TAKAGI Kentaro; EGUCHI Norikazu; UEDA Tatsushiro; SASA Kaichiro; KOIKE Takayoshi
  Journal of Agricultural Meteorology， Hokkaido, 56, 9, 16, 2004, [Peer-reviewed]
  Japanese, Scientific journal
• Stem respiration of a larch (Larix gmelini) plantation in northeast China
  WJ Wang; FJ Yang; YG Zu; HM Wang; K Takagi; K Sasa; T Koike
  ACTA BOTANICA SINICA, 45, 12, 1387, 1397, Dec. 2003, [Peer-reviewed]
  English, Scientific journal
• An alternative approach to determining zero-plane displacement, and its application to a lotus paddy field
  K Takagi; A Miyata; Y Harazono; N Ota; M Komine; M Yoshimoto
  AGRICULTURAL AND FOREST METEOROLOGY, 115, 3-4, 173, 181, Mar. 2003, [Peer-reviewed]
  English, Scientific journal
• Numerical Simulation of the Time-Averaged Rate of Photosynthesis in a Leaf under Alternating Light
  Makoto Ooba; Hidenori Takahashi; Kentaro Takagi
  Journal of Agricultural Meteorology, 59, 4, 259, 267, 2003, [Peer-reviewed]
  English, Scientific journal
• Effect of pore structure on redistribution of subsurface water in Sarobetsu Mire, northern Japan
  T Tsuboya; K Takagi; H Takahashi; Y Kurashige; N Tase
  JOURNAL OF HYDROLOGY, 252, 1-4, 100, 115, Oct. 2001, [Peer-reviewed]
  English, Scientific journal
• Basic data for CO2 flux monitoring of a young larch plantation--Current status of a mature, mixed conifer-broadleaf forest stand --
  Koike, T; Hojyo, H; Naniwa, A; Ashiya, D; Sugata, S; Sugishita, Y; Kobayashi, M; Nomura, M; Akibayashi, Y; Nakajima, J; Takagi, K; Shibata, H; Satoh, F; Wang, W; Takada, M; Fujinuma, Y; Shi, F; Matsuura, Y; Sasa, K
  Eurasian Journal of Forest Research, 2, 65, 79, Hokkaido University, 2001, [Peer-reviewed]
  English, Scientific journal, Research Materials
• Vegetation Characteristics of a Larch-dominant Site for CO2 Flux: Monitoring Study at the Laoshan Experimental Station in Northeast China
  Shi, F; Xiangwei, C; Wang, W; Takagi, K; Akibayashi, Y; Sasa, K; Uemura, S
  Eurasian Journal of Forest Research, 3, 55, 67, Hokkaido University, 2001, [Peer-reviewed]
  English, Scientific journal, Research Materials
• Meteorological characteristics of northern Hokkaido University Forests during 1995-1999
  TAKAGI Kentaro; SASA Kaichiro; SATO Fuyuki; NOMURA Mutsumi; KOMIYA Keiji; TAKAHASHI Hiroyuki; Hojyo Hajime; KANEKO Kisyohi; ICHIKAWA Kazu; NAKAJIMA Junko; ASHIYA Daitaro; ISHIDA Sachinobu; OKUDA Atsushi; NANIWA Aiko; OKAMOTO Tomoko
  Research Bulletin of the Hokkaido University Forests, 58, 1, 29, 36, 2001, [Peer-reviewed]
  Japanese, Scientific journal
• Effect of the invasion of vascular plants on heat and water balance in the Sarobetsu mire, northern Japan
  K Takagi; T Tsuboya; H Takahashi; T Inoue
  WETLANDS, 19, 1, 246, 254, Mar. 1999, [Peer-reviewed]
  English, Scientific journal
• Erratum: Diurnal hystereses of stomatal and bulk surface conductances in relation to vapor pressure deficit in a cool-temperature wetland (Agricultural and Forest Meteorology (1998) 91 (171-191)) PII S016819239602391X
  K. Takagi; T. Tsuboya; H. Takahashi
  Agricultural and Forest Meteorology, 93, 1, 71, 72, 25 Jan. 1999, [Peer-reviewed]
  English, Scientific journal
• Development of Micrometeorology and Flux Database System Using the World Wide Web Interface
  Yoshinobu Harazono; Asashi Komine; Kentaro Takagi; Hirokazu Komuro
  Journal of Agricultural Meteorology, 55, 2, 173, 178, 01 Jan. 1999, [Peer-reviewed]
  English, Scientific journal
• Diurnal hystereses of stomatal and bulk surface conductances in relation to vapor pressure deficit in a cool-temperate wetland
  K Takagi; T Tsuboya; H Takahashi
  AGRICULTURAL AND FOREST METEOROLOGY, 91, 3-4, 177, 191, Jun. 1998, [Peer-reviewed]
  English, Scientific journal
• Diurnal variation of soil water content in Sarobetsu mire
  TSUBOYA Taro; TAKAGI Kentaro; KURASHIGE Yoshimasa; TASE Norio
  Journal of Japanese Association of Hydrological Sciences, 27, 3, 129, 141, 日本水文科学会, 1997, [Peer-reviewed]
  Japanese, Scientific journal

• 常緑針葉樹林におけるオゾンフラックス長期観測と気孔からのオゾン吸収量の推定
  和田龍一; 深山貴文; 小南裕志; 高梨聡; 堅田元喜; 谷晃; 米村正一郎; 植山雅仁; 高木健太郎; 松見豊; 梶野瑞王; 中野隆志; 高橋善幸, 大気環境学会年会講演要旨集, 65th, 2024
• Species diversity effects on tree leaf litter decomposition in a changing climate
  林夏帆; 高木健太郎; LIANG Naishen; 上田実希; 岡田慶一; 森章, 日本生態学会大会講演要旨(Web), 71st, 2024
• 3反復航空機Lidar測量による18年間2時期の森林バイオマス変化量の広域評価
  細田理仁; 高木健太郎, 日本農業気象学会全国大会講演要旨(CD-ROM), 2024, 2024
• 土壌観測データの統合解析による土壌CO₂収支の解明
  山貫緋称; 市井和仁; 山本雄平; 寺本宗正; 孫力飛; 小嵐淳; 安藤麻里子; 永野博彦; 平野高司; 高木健太郎; 石田祐宣; 高木正博; 近藤俊明; 高橋善幸; 梁乃申, 日本農業気象学会全国大会講演要旨(CD-ROM), 2024, 2024
• Soil carbon dynamics revealed by radiocarbon
  小嵐淳; 安藤麻里子; LIANG Naishen; 近藤俊明; 高木健太郎; 平野高司; 高木正博; 石田祐宣; 寺本宗正; 永野博彦; 市井和仁; 石塚成宏; 平舘俊太郎; 伊藤雅之; SUN Lifei; 國分陽子; 藤田奈津子, 日本生態学会大会講演要旨(Web), 70th, 2023
• 陸域生物圏の機能評価に向けたJapanFluxデータベースの構築
  植山雅仁; 平野高司; 大久保晋治郎; 高木健太郎; 石川守; 中路達郎; 小谷亜由美; 檜山哲哉; 太田岳史; 岩田拓記; 鈴木純; 熊谷朝臣; 羽田泰彬; 高村直也; 浅沼順; 杉田倫明; 小杉緑子; 斎藤琢; 松本一穂; 石田祐宣; 中井太郎; 小宮秀治郎; 町村尚; 植山雅仁; 原薗芳信; 小南裕志; 溝口康子; 高梨聡; 安田幸生; 北村謙三; 松浦陽次郎; 高橋善幸; 平田竜一; 井手玲子; 小野圭介; 杉浦裕義; 村山昌平; 中屋耕, 日本農業気象学会全国大会講演要旨(CD-ROM), 2023, 2023
• 長期温暖化実験による北海道最北の森林泥炭地における三年間の土壌CO₂とCH₄フラックスの変化
  馬鋭麒; 高木健太郎; 平野高司; 孫力飛; 梁乃申; 高橋善幸; 寺本宗正; 近藤俊明; 小嵐淳; 安藤麻里子; 石田祐宣; 高木正博; 市井和仁, 日本農業気象学会全国大会講演要旨(CD-ROM), 2023, 2023
• 白神山地の森林土壌におけるメタンフラックスの乾燥年と湿潤年の比較
  石田祐宣; 石川輝; 孫力飛; 梁乃申; 寺本宗正; 平野高司; 高木健太郎; 高木正博; 近藤俊明; 小嵐淳; 安藤麻里子; 市井和仁; 高橋善幸, 日本農業気象学会全国大会講演要旨(CD-ROM), 2023, 2023
• 都市近郊の丘陵地森林における炭素収支の特徴
  若林大雅; 矢崎友嗣; 高木健太郎; 松田和秀, 日本農業気象学会全国大会講演要旨(CD-ROM), 2021 (CD-ROM), 2021
• 天然更新補助作業の確実性:かき起こし地の成長に及ぼす地形の影響
  吉田俊也; 山崎遥; 高木健太郎, 日本森林学会大会学術講演集, 132nd, 2021
• A large scale evaluation of effect of changing environment on forest stands: results from a Free Air CO2 or O3 enrichment system
  Koike T; Eguchi N; Watanabe T; Ichikawa K; Fujito E・Qu LY; Watanabe M; Watanabe Y; Agathokleou E; Kitao M; Takagi K; Hiura T; Nakaba S; Satomura T; Funada R; Satoh F, 北方森林保全技術, 37, Feb. 2020
  Japanese, Introduction research institution
• 森林伐採に伴い放出されたCO₂を回収するために必要な時間
  高木健太郎; 小池孝良; 笹賀一郎; MARICAR Aguilos; 梁乃申; 高橋善幸; 三枝信子; 藤沼康実, 日本農業気象学会全国大会講演要旨(CD-ROM), 2020 (CD-ROM), 2020
• Influence of global warming on soil organic carbon decomposition in Asian monsoon forests and the feedback
  LIANG Naishen; 寺本宗正; 高木健太郎; 近藤俊明; 小嵐淳; 安藤麻里子; 平野高司; 高橋善幸; 高木正博; 石田祐宣; 荒巻能史; 楢本正明; ZHANG Yiping; ZHANG Yiping; LAI Derrick Y.F.; CHIANG Po-Neng; ZENG Jiye; PIAO Hilong; LI Shenggong; 冨松元; ZHAO Xin; 中根周歩; YAO Tze-Leong, 日本生態学会大会講演要旨(Web), 67th, 2020
• 富士吉田アカマツ林におけるオゾンフラックスの季節変化
  中野尚治; 和田龍一; 松見豊; 高梨聡; 深山貴文; 小南裕志; 望月智貴; 谷晃; 米村正一郎; 植山雅仁; 高木健太郎; 堅田元喜; 中野隆志; 反町篤行, 日本農業気象学会関東甲信越支部例会一般講演要旨集(Web), 16, 2019
• Response and Feedback of Asian Forest Soil Carbon Flux to Global Warming
  LIANG NAISHEN; Ando Mariko; Ishida Sachinobu; Takagi Masahiro; Takahashi Yoshiyuki; Teramoto Munemasa; Zhao Xin; Tomimatsu Hajime; Takagi Kentaro; Hirano Takashi; Kondo Toshiaki; Koarashi Jun, The Japanese Forest Society Congress, 130, 0, 701, 701, 2019
  

  [in Japanese]

  , THE JAPANESE FORESTRY SOCIETY, Japanese
• 雪解け時期の早まりが土壌呼吸に与える影響:大面積操作実験による検証
  片山歩美; BRYANIN Semyon V; 高木健太郎; 小林真, 日本生態学会大会講演要旨(Web), 65th, ROMBUNNO.P2‐306 (WEB ONLY), 2018
  Japanese
• Prediction of forest GPP using hyper-spectral images
  吉川慶; 高木健太郎; 矢崎友嗣; 平野高司; 井手玲子; 小熊宏之; 廣瀬保雄; 栗原純一, 日本リモートセンシング学会学術講演会論文集(CD-ROM), 63rd, 2017
• 融雪時期の操作が樹木の葉形質におよぼす影響は個体サイズによって異なるか?
  丸毛絵梨香; 高木健太郎; 関宰, 小林真, 日本生態学会大会講演要旨(Web), 64th, ROMBUNNO.P1‐R‐464 (WEB ONLY), 2017
  Japanese
• 雪解け時期の早まりが森林の下層植生と成木に及ぼす影響の違い:大面積操作実験による検証
  小林真; 片山歩美; 丸毛絵梨香; BRYANIN Semyon; 高木健太郎, 日本生態学会大会講演要旨(Web), 64th, ROMBUNNO.P2‐B‐047 (WEB ONLY), 2017
  Japanese
• シンポジウム 2015ネン ニホン ノウギョウ キショウ ガッカイ ホッカイドウ シブ コウカイ コウエンカイ 『 キンネン ノ ドウホク ノ ノウギョウ キショウ 』
  高木 健太郎, 北海道の農業気象 : 日本農業気象学会北海道支部会誌 / 日本農業気象学会北海道支部 編, 68, 35, 38, Nov. 2016
  札幌 : 日本農業気象学会北海道支部, Japanese
• 天然更新によるトドマツ人工林複層林化への試み―鋸谷式間伐と樹冠下掻起しの実践―
  坂井励; 吉田俊也; 小塚力; 高木健太郎; 岸田治; 片山昇; 高橋廣行; 浪花愛子; 伊藤欣也; 実吉智香子; 五十嵐満; 和田克法; 大岩敏昭; 永井義隆; 古和田四郎; 小池義信; 椿本勝博; 大岩健一; 佐藤博和; 宮崎徹; 大岩真一; 岡翼, 北方森林保全技術, 32, 1, 11, 23 Mar. 2015
  北海道大学北方生物圏フィールド科学センター森林圏ステーション, Japanese
• 開放系CO₂増加実験(FACE:Free Air CO₂ Enrichment)による森林樹木への高濃度CO₂の影響評価:札幌実験苗畑の例(2002‐2013)
  KOIKE TAKAYOSHI; WATANABE MAKOTO; WATANABE YOKO; FUNADA RYO; SANO YUZO; TAKAGI KENTARO; HIURA TSUTOMU; SASA KAICHIRO; SATO FUYUKI, 北方森林保全技術, 32, 28, 31, 23 Mar. 2015
  Japanese
• 天然更新によるトドマツ人工林複層林化への試み
  坂井励; 吉田俊也; 小塚力; 高木健太郎; 岸田治; 片山昇; 高橋廣行; 浪花愛子; 伊藤欣也; 実吉智香子; 五十嵐満; 和田克法; 大岩敏昭; 永井義隆; 古和田四郎; 小池義信; 椿本勝博; 大岩健一; 佐藤博和; 宮崎徹; 大岩真一; 岡翼, 北海道大学総合技術研究会報告集 平成26年度(CD-ROM), 2014
• 抜き伐りが繰り返し行われた天然生針広混交林の63年間の変化
  吉田俊也; 坂井励; 高橋廣行; 高木健太郎, 日本生態学会大会講演要旨(Web), 61st, 2014
• 航空機LiDARを利用した,北海道北部冷温帯林における森林蓄積量とバイオマス量の推定
  高木健太郎; 米康充; 野村睦; 笹賀一郎; 藤沼康実; 村山岳史; 小熊宏之, 日本農業気象学会全国大会講演要旨, 2014, 159, 2014
  Japanese
• 森林からのメタン発生：進行する高CO2環境の影響
  小池孝良; 高木健太郎; 佐藤冬樹, 北方林業, 66, 9, 284, 287, 2014
  北方林業会, Japanese, Introduction commerce magazine
• Aerosol Dry Deposition on Forests in East Asia
  MATSUDA Kazuhide; KHUMMONGKOl Pojanie; SASE Hiroyuki; MURAO Naoto; NOGUCHI Izumi; FUKAZAWA Tatsuya; HAYASHI Kentaro; TAKAHASHI Akira; TAKAGI Kentaro; YAMAGUCHI Takashi, Earozoru Kenkyu, 29, 1, s160, s167, 2014, [Peer-reviewed]
  Recent research on aerosol dry deposition in forests in East Asia, focusing particularly on field measurements, estimations of deposition rates, and developments of measurement technique, was reviewed to contribute assessments of the impacts of aerosols on vegetation. Some measurements of aerosol deposition by the gradient method indicated that the deposition velocities were in agreement with other experimental results in North America and Europe, and were higher than those calculated by theoretical models. Higher deposition velocities were associated with larger friction velocities and unstable conditions. The deposition velocities were possibly influenced by humidity, due to the growth in size of hygroscopic aerosols and the enhancement of surface collection efficiency. Some estimations of aerosol deposition rates indicated i) high ratios of sulfate to SO₂ in deposition rates in remote areas of Japan, ii) high dry deposition of elemental carbon on a tropical forest, and iii) about 10~20% year to-year variations in aerosol deposition, with a higher percentage variation in tropical areas. Regarding aerosol deposition on forest leaves, there was larger deposition in higher parts than in lower parts, and approximately 70% of total aerosol deposition onto forests probably deposit on forest leaves during the leafy season. It is indicated that the relaxed eddy accumulation method could obtain more accurate data on the fluxes of aerosol components than data obtained with the gradient method., Japan Association of Aerosol Science and Technology, Japanese, Introduction scientific journal
• Dynamics of Leaf Area Index of 3 kinds of birch species grown under free air CO_2 enrichment (FACE) system
  HARA Yuko; ITO Hirotaka; MAO Qiao-zhi; WATANABE Makoto; TAKAGI Kentaro; SATO Fuyuki; KOIKE Takayoshi, Boreal forest research, 61, 61, 41, 42, 18 Feb. 2013
  北方森林学会, Japanese
• 高CO2環境に対する落葉樹の応答
  小池孝良; 渡辺 誠; 渡邊陽子; 江口則和; 高木健太郎; 佐藤冬樹; 船田 良, 科学と生物, 51, 8, 559, 565, 2013
  Japan Society for Bioscience, Biotechnology, and Agrochemistry, Japanese, Introduction commerce magazine
• An automated-chamber network for evaluation of carbon budget of Asian terrestrial ecosystems
  Liang, N; Wang, Y; Zhang, Y; He, J; Li, S; Piao, S; Fang, J; Hirano, T; Takagi, K; Fletcher, C.D; Teramoto, M; Tan, Z.-H, AsiaFlux Newsletter, 35, 3, 12, 2013
  English, Report scientific journal
• 1B1126 Effects of elevated CO_2 on photosynthesis, growth and powdery mildew infection of oak sprout(3 Effect-3 plant,General Presentations)
  WATANABE Makoto; KITAOKA Satoshi; EGUCHI Norikazu; WATANABE Yoko; SATOMURA Takami; TAKAGI Kentaro; SATOH Fuyuki; KOIKE Takayoshi, 大気環境学会年会講演要旨集, 53rd, 53, 29 Aug. 2012
  Japan Society for Atmospheric Environment, Japanese
• P-50 Photosynthetic traits of 3 birch species grown under elevated CO_2 with FACE (Free Air CO_2 Enrichment)(Poster session)
  WATANABE Makoto; TAKAGI Kentaro; SATOH Fuyuki; KOIKE Takayoshi, 大気環境学会年会講演要旨集, 53, 280, 280, 29 Aug. 2012
  Japan Society for Atmospheric Environment, Japanese
• 2G0930-4 Evaluation of deposition amount and dynamics of aerosol in East Asian forest ecosystems(Effects of aerosol on plants,Special Meeting 2)
  MATSUDA Kazuhide, 大気環境学会年会講演要旨集, 53, 86, 87, 29 Aug. 2012
  社団法人大気環境学会, Japanese
• Dynamics of shoots of 3 kinds of birch species grown under free air CO_2 enrichment (FACE) system : The results of second year
  HARA Yuko; ITO Hirotaka; MAO Quao-zhi; WATANABE Makoto; HOSHIKA Yasutomo; TAKAGI Kentaro; SAITO Hideyuki; SHIBUYA Masato; KOIKE Takayoshi, Boreal forest research, 60, 60, 39, 40, 18 Feb. 2012
  北方森林学会, Japanese
• Effects of elevated CO_2 on photosynthetic activity of 3 kinds of birch species treated with free air CO_2 enrichment (FACE) for two growing seasons
  WATANABE Makoto; UEDA Tatsushiro; TAKAGI Kentaro; SASA Kaichiro; KOIKE Takayoshi, Boreal forest research, 60, 60, 41, 42, 18 Feb. 2012
  北方森林学会, Japanese
• P-67 A correlation between black carbon and potassium ion in aerosol : Effect of biomass burning(Poster session)
  NOGUCHI Izumi; YAMAGUCHI Takashi; AKIYAMA Masayuki; KAWAMURA Miho; MURAO Naoto; TAKAGI Kentaro; SHIBATA Hideaki; FUKUZAWA Karibu; HONDA Hiromitsu, 大気環境学会年会講演要旨集, 53, 297, 297, 2012
  大気環境学会, Japanese
• 3B1126 Diurnal variation of gaseous and particle component concentrations using the filter-pack method (2)(4 Process-4 deposition/5 dynamics,General Presentations)
  NOGUCHI Izumi; YAMAGUCHI Takashi; AKIYAMA Masayuki; KAWAMURA Miho; TAKAGI Kentaro; MATSUDA Kazuhide, 大気環境学会年会講演要旨集, 53, 453, 453, 2012
  大気環境学会, Japanese
• Effects of clear-cutting on the dynamics of nitrate deposited onto a forested watershed
  Tsunogai Urumu; Komatsu Daisuke D; Suzuki Atsushi; Nakagawa Fumiko; Fukuzawa Karibu; Shibata Hideaki; Takagi Kentaro; Nomura Mutsumi, Abstracts of Annual Meeting of the Geochemical Society of Japan, 59, 0, 2012
  本研究では、森林およびササを伐採した演習林から流出する硝酸イオンの三酸素同位体組成の時間変化を分析することで、流出水中の硝酸イオンの起源を明らかにして、森林の大気から沈着する窒素除去能力に対して伐採が与える影響を定量化した。その結果、特にササ伐採後は沈着窒素の流出フラックスが伐採前の約20倍に増加しており、大気から沈着する窒素の除去能力がほぼ完全に失われたことが明らかになった, GEOCHEMICAL SOCIETY OF JAPAN, Japanese
• アジアの森林の光合成・呼吸パラメータについて
  高木健太郎; 平田竜一; 平野高司; 植山雅仁; 小野圭介; 井手玲子; 小川安紀子; 三枝信子; 高橋善幸; 市井和仁; KWON H; HONG J; LEIMING Z; LI S.‐G; HAN S; WANG H.‐M; ZHANG Y.‐P; 浅沼順; 蒲生稔; 前田高尚; 村山昌平; 町村尚; 中井裕一郎; 太田岳史; 斎藤琢, 日本農業気象学会全国大会講演要旨, 2012, 33, 2012
  Japanese
• The history and prospects of silviculture in Teshio Experimental Forest
  小塚 力; 高木 健太郎; 岸田 治, 北方森林保全技術, 0, 29, 1, 13, Nov. 2011
  北海道大学北方生物圏フィールド科学センター森林圏ステーション, Japanese
• Shoot dynamics of 3 birch seedlings grown under a Free Air CO_2 Enrichment system
  ITO Hirotaka; WATANABE Makoto; MAO Qiao-zhi; NOVRIYANTI Eka; UEDA Tatsushiro; TAKAGI Kentaro; SASA Kaichiro; SAITO Hideyuki; SHIBUYA Masato; KOIKE Takayoshi, 日本森林学会北海道支部論文集, 59, 59, 35, 38, 19 Feb. 2011
  北方森林学会, Japanese
• Photosynthetic activity of 3 birches grown under free air CO_2 enrichment system
  WATANABE Makoto; MAO Qiaozhi; NOVRIYANTI Eka; ITO Hirotaka; UEDA Tatsushiro; TAKAGI Kentaro; SASA Kaichiro; KOIKE Takayoshi, 日本森林学会北海道支部論文集, 59, 59, 39, 40, 19 Feb. 2011
  北方森林学会, Japanese
• Yearly trend of snowmelt runoff in a forestry treatment watershed
  Nomura Mutumi; Takagi Kentaro; Hojo Hajime; Takahashi Hiroyuki; Sakai Rei; Ito Kinya; Miyoshi Chikako, JSSI & JSSE Joint Conference, 2011, 0, 184, 184, 2011
  The Japanese Society of Snow and Ice / Japan Society for Snow Engineering, Japanese
• Changes in LAI and dynamics of shoots of 3 kinds of birch species grown under free air CO2 enrichment (FACE) system.
  Hara Yuko; Ito Hirotaka; Nakaji Tatsuro; Watanabe Makoto; Takagi Kentaro; Sato Fuyuki; Koike Takayoshi, The Japanese Forest Society Congress, 123, 0, Pb181, Pb181, 2011
  THE JAPANESE FORESTRY SOCIETY, Japanese
• 北海道大学天塩研究林の取組み
  高木 健太郎, 公益社団法人北海道森と緑の会会誌「山つくり」, 平成22年度版, 17, 17, 2011, [Invited]
  Japanese, Introduction commerce magazine
• 北海道北部における森林管理や伐採が流域生態系の構造や機能に及ぼす影響
  SHIBATA Hideaki; TAKAGI Kentaro; YOSHIDA Toshiya; FUKUZAWA Karibu; SATO Fuyuki; SASA Kaichiro, Water science, 317, 6, 30, 42, 2011, [Peer-reviewed]
  Japanese, Introduction scientific journal
• 森林地域における金属成分の動態
  宮川浩樹; 深澤達矢; 野口泉; 高橋正宏; 佐藤久; 福澤加里部; 柴田英昭; 野村睦; 高木健太郎; 三枝信子, 環境化学討論会講演要旨集, 19th, 130, 131, 20 Jun. 2010
  Japanese
• Effects of high nitrogen load on the photosynthesis and growth of the hybrid larch (Larix gmelinii×L. kaempferi) seedlings : The responses for the nitrogen treatment during two growing seasons
  RYU Koharu; WATANABE Makoto; TAKAGI Kentaro; NOMURA Mutsumi; KOIKE Takayoshi, Transactions of the Meeting in Hokkaido Branch of the Japanese Forest Society, 58, 58, 17, 20, 19 Feb. 2010
  北方森林学会, Japanese
• Report of the AsiaFlux Workshop 2009-Integrating Cross-scale Ecosystem Knowledge: Bridges and Barriers-
  TAKAGI Kentaro, AsiaFlux Newsletter, 31, 2, 5, 2010
  English, Meeting report
• 蛇紋岩土壌におけるグイマツ雑種F1利用の可能性-窒素沈着量の増加を考慮した苗木植栽試験
  RYU Koharu; WATANABE Makoto; TAKAGI Kentaro; KOIKE Takayoshi, Forest tree breeding of Hokkaido, 53, 1, 25, 28, 2010, [Peer-reviewed]
  北海道林木育種協会, Japanese, Introduction research institution
• 冷温帯林における細根生産・枯死の季節変動と年変動
  福澤 加里部; 柴田 英昭; 高木 健太郎; 佐藤 冬樹; 笹賀 一郎; 小池 孝良, 根の研究 = Root research, 18, 2, 70, 70, 26 Jun. 2009
  【はじめに】森林生態系の生産性、炭素や養分動態に細根が重要な役割を果たしていることが近年認識されてきた。細根生産は地上部で獲得した炭素を使って行われ、細根の枯死・分解により土壌へ炭素や養分が移動するためである。そのような細根の生産量を評価するためには、細根バイオマスだけでなく、細根のターンオーバーや生産・枯死の時間変化を明らかにする必要がある。既往研究での細根生産・枯死の時間変動パターンは気候帯や植生の種類によって異なっており、さまざまなタイプの森林生態系において、長期的にそして環境要因との関係を解明することも必要である。本研究では、北海道北部のササ型林床をもつ冷温帯林における細根動態を明らかにするために、細根バイオマス・ネクロマスと生産・枯死の季節変化および年変動を測定し、環境要因との関係を検証した。, 根研究学会, Japanese
• 天塩研究林における大気汚染物質の沈着に関する研究
  長谷川祥樹; 深澤達矢; 野口泉; 高橋正宏; 佐藤久; 福澤加里部; 柴田英昭; 野村睦; 高木健太郎; 藤沼康実; 佐々木巴え, 環境化学討論会講演要旨集, 18th, 78, 79, 09 Jun. 2009
  Japanese
• 蛇紋岩土壌に植栽したグイマツ雑種F1の成長と外生菌根形成に対する窒素付加の影響
  笠小春; 渡辺誠; 玉井裕; 小池孝良; 柴田英昭; 高木健太郎; 野村睦, 日本森林学会大会学術講演集(CD−ROM), 120th, ROMBUNNO.PA3-06, 25 Mar. 2009
  Japanese
• FACE(Free Air CO₂ Enrichment)による高CO₂環境下で育成した冷温帯落葉樹萌芽の成長および光合成特性
  渡辺誠; 北岡哲; 渡辺陽子; 小林真; 上田龍四郎; 高木健太郎; 日浦勉; 笹賀一郎; 小池孝良, 日本生態学会大会講演要旨集, 56th, 280, 17 Mar. 2009
  Japanese
• Forestation in windy cold area in northern Hokkaido
  Nomura Mutumi; Takagi Kentaro; Hojyo Hajime; Takahashi Hiroyuki; Kozuka Chikara; Sakai Rei; Ito Kinya; Miyoshi Cikako, JSSI & JSSE Joint Conference, 2009, 0, 29, 29, 2009
  The Japanese Society of Snow and Ice / Japan Society for Snow Engineering, Japanese
• Estimating whole timber volume planted in a Nakanomine fire-damaged area using GIS technique
  高橋廣行; 高木健太郎; 北條元; 小塚力; 坂井励; 伊藤欣也; 實吉智香子; 野村睦, Technical report for boreal forest conservation of the Hokkaido University Forests, 27, 27, 1, 5, 2009
  北海道大学北方生物圏フィールド科学センター森林圏ステーション, Japanese, Introduction research institution
• 全木集材方式による未利用バイオマス収集コスト削減と林内物質動態への影響
  永岡彩; 秋林幸男; 野村睦; 高木健太郎; 上浦達哉; 北條元; 高橋廣行; 小塚力; 坂井励; 笹賀一郎, 日本林学会北海道支部論文集, 57, 199, 201, 2009
  Japanese, Summary national conference
• 大気中CO2濃度の増加が冷温帯落葉広葉樹の成長及び競争関係にもたらす影響
  江口則和; 高木健太郎; 日浦勉; 笹賀一郎; 上田龍四朗; 船田良; 小池孝良, 日本林学会北海道支部論文集, 57, 187, 189, 2009
  Japanese, Summary national conference
• 窒素付加が蛇紋岩土壌に植栽したグイマツ雑種F1の光合成と成長に与える影響
  笠小春; 渡辺誠; 高木健太郎; 柴田英昭; 野村睦; 小池孝良, 日本林学会北海道支部論文集, 57, 49, 51, 2009
  Japanese, Summary national conference
• 環境変化に対するカラマツ類の応答を探る～研究の動向と今後の方向性～
  笠小春; 野村睦; 高木健太郎; 小池孝良, 北方林業, 61, 2, 32, 35, 2009
  北方林業会, Japanese, Introduction commerce magazine
• Long-term monitoring of carbon and water cycles in larch forest ecosystems in East Asia
  Saigusa, N; Takagi, K; Hirano, T, iLEAPS Newsletter, 6, 44, 45, 2009
  English, Report scientific journal
• 航空機リモートセンシングを用いた森林バイオマス量の計測について
  TAKAGI Kentaro, Journal of Agricultural Meteorology， Hokkaido, 61, 29, 36, 2009, [Peer-reviewed]
  Japanese, Introduction scientific journal
• Studies on the CO2 storage capacity of deciduous trees with use of FACE (Free Air CO2 Enrichment) in the Experimental Forest of Hokkaido University
  小池 孝良; 江口 則和; 渡辺 誠; 渡邊 陽子; 北岡 哲; 里村 多香美; 高木 健太郎; 柴田 英昭; 日浦 勉; 笹 賀一郎; 船田 良, Technical report for boreal forest conservation of the Hokkaido University Forests, 26, 47, 52, Nov. 2008
  はじめに:モジュールFACEとは、モジュール(部材)単位でのCO2付加実験を野外で行ない(Free Air CO2 Enrichment; FACE,)開放系大気CO2増加)、大気中のCO2濃度が上昇する環境での樹木の成長応答とCO2固定・貯留能力を調べる施設のことである(小池ら 1995)。当初、予算規模から、シュートや枝単位でのCO2付加を想定していた。しかし、設計・施工に貢献された上田龍四郎氏(北海道ダルトン)の技術によって(山武ニュース 2002)、スイス・バーゼル大学と山岳FACEを基礎にした北大独自のFACEが完成した(江口ら 2004,Eguchi et al. 2005, 小池ら 2005)。本来は、森林全体を対象に研究できる実験施設の設置を予定したが(DukeFACE 2007)、予算の制約から小規模のFACEを設けることになった。しかし、このことによって進行し続ける大気CO2増加に伴う温暖化条件での落葉樹11種の成長応答を、土壌条件を加味して調査することができた(江口ら 2004, 小池ら 2005)。当初の文科省予算が終了し、いわば第二期に入ったので、これまでの予算の流れと研究の構成をまとめ、現在、運転中のシステムを紹介する。これによって、実験苗畑の施設の利活用の基礎資料としたい。, 北海道大学農学部附属演習林, Japanese
• 2I1106 Effects of time resolution on the dry deposition estimating of air pollutants(4 Process-4 deposition/4 Process-5 dynamics,General Presentations)
  NOGUCHI Izumi; YAMAGUCHI Takashi; TAKAGI Kentaro; FUKAZAWA Tatsuya; HAYASHI Kentaro; SAEGUSA Nobuko, 大気環境学会年会講演要旨集, 49, 544, 544, 29 Aug. 2008
  社団法人大気環境学会, Japanese
• 天塩研究林における大気降下物中の金属成分の測定と検討
  深澤達矢; 長谷川祥樹; 佐藤久; 高橋正宏; 柴田英昭; 野村睦; 高木健太郎; 藤沼康実, 環境化学討論会講演要旨集, 17th, 214, 215, 10 Jun. 2008
  Japanese
• 針葉樹林の光利用効率推定のための分光指標の検索
  中路達郎; 井手玲子; 高木健太郎; 小杉緑子; 大久保晋治郎; 奈佐原顕郎; 三枝信子; 小熊宏之, 日本農業気象学会全国大会講演要旨, 2008, 2008
• Changes in petiole hydraulic structure and leaf water flow in birch and oak saplings in an enhanced CO2 environment
  Eguchi N; Mori N; Ueda T; Funada R; Takagi K; Hiura T; Sasa K; Koike T, Tree Physiology, 28, 287, 295, 2008
• Water budget in a forestry operated watershed in snowy area
  Nomura Mutumi; Takagi Kentaro; Hojyo Hajime; Takahashi Hiroyuki; Kozuka Chikara; Sakai Rei; Ito Kinya; Sasa Kaichiro, JSSI & JSSE Joint Conference, 2008, 0, 82, 82, 2008
  The Japanese Society of Snow and Ice / Japan Society for Snow Engineering, Japanese
• The role of fine roots in carbon dynamics:temporal variation in fine root production and mortality and turnover
  Fukuzawa Karibu; Satomura Takami; Shibata Hideaki; Takagi Kentaro; Satoh Fuyuki; Koike Takayoshi; Sasa Kaichiro, The Japanese Forest Society Congress, 119, 0, 107, 107, 2008
  THE JAPANESE FORESTRY SOCIETY, Japanese
• Dissolved carbon fiow in Larch manmade forest include the influences of windfall treatment
  Sasa Kaichiro; Satoh Fuyuki; Shibata Hideaki; Takagi Kentaro; Takahata Mamoru; Sugishita Yoshiyuki; Fukui Tomizo; Mamiya Haruhiro; Sugata Sadao; Okuyama Satoru; Ishii Tadashi; Fujito Eishi; Ishida Nobuo; Okuda Atsushi; Ichikawa Kazu; Arikura Kiyomi; Koike Takayoshi; Suzuki Teppei; Qu Laiye; Fujinuma Yasumi, The Japanese Forest Society Congress, 119, 0, 160, 160, 2008
  THE JAPANESE FORESTRY SOCIETY, Japanese
• 「北海道の農業気象」について思うこと
  高木 健太郎, 北海道の農業気象, 60, 5, 5, 2008, [Invited]
  Japanese, Others
• Inter-comparison of eddy flux calculation and QC/QA procedure of three flux networks (ChinaFLUX, JapanFlux and KoFlux) under AsiaFlux
  Takagi, K; Hirata, R; Wen, X; Kwon, H; Saigusa, N; Ono, K; Miyata, A, AsiaFlux Newsletter, 26, 8, 11, 2008
  English, Introduction scientific journal
• 火入れ処理が北海道のササ地における土壌のリンと窒素に与える影響に関する研究
  小林真; 金容ソク; 松井克彦; 野村睦; 柴田英昭; 里村多香美; 上浦達哉; 北條元; 高橋廣行; 小塚力; 坂井励; 高木健太郎; 佐藤冬樹; 笹賀一郎; 小池孝良, 日本林学会北海道支部論文集, 56, 29, 31, 2008
  Japanese, Summary national conference
• 高CO2環境下で生育する冷温帯落葉広葉樹の水分通道と木部構造の変化
  江口則和; 里村多香美; 渡邊陽子; 高木健太郎; 日浦勉; 笹賀一郎; 北岡哲; 上田龍四朗; 船田良; 小池孝良, 日本林学会北海道支部論文集, 56, 25, 27, 2008
  Japanese, Summary national conference
• 落葉・常緑針葉樹林の光利用効率推定における植生指標の有効性評価
  中路達郎; 井手玲子; 高木健太郎; 小杉緑子; 大久保晋治郎; 西田顕郎; 三枝信子; 小熊宏之, CGER リポート, M019-2008, 97, 98, 2008
  Japanese, Introduction research institution
• 分光植生指標を用いた森林光合成能力の評価とGPPの推定
  井手玲子; 中路達郎; 小熊宏之; 高木健太郎; 三枝信子, CGER リポート, M019-2008, 77, 78, 2008
  Japanese, Introduction research institution
• チャンバー法による土壌からの炭素放出観測の展開
  梁乃申; 藤沼康実; 向井人史; 高橋善幸; Seong-Dong Kim; 平野高司; 高木健太郎; 下山宏; 中根周歩; Yongwon Kim, CGER リポート, M019-2008, 33, 36, 2008
  Japanese, Introduction research institution
• 伐採・植林などの森林施業が北海道北部森林小流域の炭素・水・窒素動態に与える影響
  高木健太郎; 福沢加里部; 梁乃申; 野村睦; 柴田英昭; 深澤達矢; 野口泉; 小熊宏之; 秋林幸男; 笹賀一郎; 小池孝良; 藤沼康実; 水野真人; 村山岳史, CGER リポート, M019-2008, 27, 32, 2008
  Japanese, Introduction research institution
• Development of knowledge database for advanced forestry
  高木 健太郎; 小宮 圭示; 柴田 英昭, Technical report for boreal forest conservation of the Hokkaido University Forests, 0, 25, 40, 45, Nov. 2007
  北海道大学北方生物圏フィールド科学センター森林圏ステーション, Japanese
• 天塩研究林における大気及び大気降下物中の金属成分に関する研究
  深澤達矢; 長谷川祥樹; 高橋正宏; 太田幸雄; 福澤加里部; 高木健太郎; 野村睦; 柴田英昭; 野口泉; 藤沼康実, 大気環境学会年会講演要旨集, 48th, 292, 24 Aug. 2007
  Japanese
• 天塩研究林における森林土壌中の金属成分に関する研究
  中島篤; 深澤達矢; 長谷川祥樹; 高橋正宏; 福澤加里部; 柴田英昭; 野村睦; 高木健太郎; 藤沼康実, 環境化学討論会講演要旨集, 16th, 222, 223, 19 Jun. 2007
  Japanese
• 森林地域における大気からの金属成分沈着に関する研究
  深澤遠矢; 長谷川祥樹; 高橋正宏; 福澤加里部; 柴田英昭; 野村睦; 高木健太郎; 藤沼康実; 飛澤拓也, 環境化学討論会講演要旨集, 16th, 226-227, 19 Jun. 2007
  Japanese
• 大気CO₂増加装置(FACE)へ侵入したニセアカシア幼樹の光合成特性
  崔東寿; 渡邊陽子; 秋林幸男; 高木健太郎; 笹賀一郎; 北岡哲; 江口則和; 小池孝良, 日本森林学会大会学術講演集(CD-ROM), 118th, P1F06, 474, 01 Apr. 2007
  THE JAPANESE FORESTRY SOCIETY, Japanese
• 4年間の高CO₂濃度処理が冷温帯落葉樹の成長に与える影響
  江口則和; 唐津一樹; 飛弾剛; 森井紀子; 上里季悠; 松井克彦; 上田龍四郎; 高木健太郎; 船田良; 日浦勉; 笹賀一郎; 小池孝良, 日本森林学会大会学術講演集(CD-ROM), 118th, P1I11, 517, 01 Apr. 2007
  THE JAPANESE FORESTRY SOCIETY, Japanese
• 高CO2濃度環境下での冷温帯樹木シュートの蒸散と通水構造の変化
  江口則和; 森井紀子; 上田龍四郎; 高木健太郎; 船田良; 日浦勉; 笹賀一郎; 小池孝良, 日本生態学会大会講演要旨集, 54th, 144, 19 Mar. 2007
  Japanese
• Photosynthetic traits of deciduous tree sapling grown under elevated CO_2 with a Free Air CO_2 Enrichment (FACE) system
  ISHII Yuuki; TAKEUCHI Yuichi; EGUCHI Norikazu; KARATSU Kazuki; UEDA Tatsushiro; TAKAGI Kentaro; HIURA Tsutom; SASA Kaichiro; KOIKE Takayoshi, Transactions of the Meeting in Hokkaido Branch of the Japanese Forest Society, 55, 55, 47, 49, 21 Feb. 2007
  北方森林学会, Japanese
• Changes in shoot water relations and hydraulic structure of cool-temperate saplings grown under elevated [CO_2]
  EGUCHI Norikazu; MORII Noriko; UEDA Tatsushiro; FUNADA Ryo; TAKAGI Kentaro; HIURA Tsutom; SASA Kaichiro; KOIKE Takayoshi, Transactions of the Meeting in Hokkaido Branch of the Japanese Forest Society, 55, 55, 50, 52, 21 Feb. 2007
  北方森林学会, Japanese
• Xylem Hydraulics of Deciduous Broadleaved Tree Saplings to Elevated CO_2 in a Free Air CO_2 Enrichment (FACE)
  MORII Noriko; EGUCHI Norikazu; IKEDA Takefumi; WATANABE Yoko; TAKAGI Kentaro; HIURA Tsutom; SASA Kaichiro; KOIKE Takayoshi, Transactions of the Meeting in Hokkaido Branch of the Japanese Forest Society, 55, 55, 53, 55, 21 Feb. 2007
  北方森林学会, Japanese
• Cost-cutting to collect Logging Slash by entirely skidding method:Insutance of Selection Cutting Practice in national forest
  Sasa Kaichiro; Oikawa Masatoshi; Akibayashi Yukio; Nomura Mutsumi; Takagi Kentaro; Kamiura Tatsuya; Hojyo Hajime; Takahashi Hiroyuki; Kozuka Chikara; Sakai Rei, The Japanese Forest Society Congress, 118, 0, 216, 216, 2007
  THE JAPANESE FORESTRY SOCIETY, Japanese
• Role of the fine roots in carbon and nitrogen dynamics in a cool-temperate forest covered with Sasa dwarf bamboo
  Fukuzawa Karibu; Shibata Hideaki; Takagi Kentaro; Satoh Fuyuki; Koike Takayoshi; Sasa Kaichiro, The Japanese Forest Society Congress, 118, 0, 692, 692, 2007
  THE JAPANESE FORESTRY SOCIETY, Japanese
• Report on the FLUXNET synthesis workshop 2007
  Takagi, K; Lee D; Tamai, K, AsiaFlux Newsletter, 21, 1, 4, 2007
  AsiaFlux Office, English, Meeting report
• Report on the AsiaFlux Training Course 2007
  Saigusa, N; Takagi, K; Lee, D; Yuta, S, AsiaFlux Newsletter, 23, 1, 3, 2007
  English, Meeting report
• 用語解説：シンチロメータ
  高木 健太郎, 北海道の農業気象, 59, 21, 23, 2007
  Japanese, Introduction scientific journal
• 森林管理技術情報データベースの開発
  高木健太郎; 小宮圭示; 柴田英昭, 北方森林保全技術, 25, 46, 55, 2007
  Japanese, Introduction research institution
• 天然林択伐作業における木質未利用バイオマスの収集コスト
  及川正敏; 秋林幸男; 野村睦; 高木健太郎; 上浦達哉; 北條元; 高橋廣行; 小塚力; 坂井励; 笹賀一郎, 日本林学会北海道支部論文集, 55, 98, 100, 2007
  Japanese, Summary national conference
• Large-scale change in forest biomass after group selection cutting estimated by digital aerial triangulation
  坂井励; 高木健太郎; 野村睦; 上浦達哉; 北條元; 高橋廣行; 小塚力; 米康充, Technical report for boreal forest conservation of the Hokkaido University Forests, 25, 25, 1, 14, 2007
  北海道大学北方生物圏フィールド科学センター森林圏ステーション, Japanese, Report research institution
• 森林における炭素循環機能に関する観測研究(中間報告)
  笹賀一郎; 高木健太郎; 藤沼康実; 水野真人, 北海道電力総合研究所研究年報, 38-7, 2007
  Japanese, Introduction research institution
• 大気からの金属成分沈着に関する研究
  長谷川祥樹; 深澤達矢; 平島邦人; 野々上沙織; 橘治国; 高橋正宏; 福澤加里部; 柴田英昭; 野村睦; 高木健太郎; 藤沼康実, 環境化学討論会講演要旨集, 15th, 126, 127, 19 Jun. 2006
  Japanese
• 高CO₂濃度処理による冷温帯落葉樹の個葉・個体スケールでの水利用特性の変化
  江口則和; 森井紀子; 渡邊陽子; 上田龍四郎; 高木健太郎; 船田良; 日浦勉; 笹賀一郎; 小池孝良, 日本森林学会大会学術講演集(CD-ROM), 117th, PA39, 03 Apr. 2006
  Japanese
• 大気中CO2濃度の増加が落葉樹稚樹の蒸散特性と葉柄道管構造に与える影響
  江口則和; 森井紀子; 上田龍四郎; 高木健太郎; 船田良; 日浦勉; 笹賀一郎; 小池孝良, 日本生態学会大会講演要旨集, 53rd, 188, 24 Mar. 2006
  Japanese
• カラマツ植林地における,オープン・クローズドパス渦相関法による蒸発散量の比較
  高木 健太郎, 日本農業気象学会北海道支部2006年大会講演要旨集, 10, 11, 2006
• Report of Fourth AsiaFlux Workshop 2005
  YAMAMOTO Akira; TAKAGI Kentaro; YASUDA Yukio; SAIGUSA Nobuko, 天気, 53, 5, 413, 418, 2006
  日本気象学会, Japanese
• Change in snowmelt runoff at a forestry operated basin
  Nomura Mutumi; Takagi Kentaro; Takahashi Hiroyuki; Hojo Hajime; Sasa Kaichiro; Fujinuma Yasumi, Preprints of the Annual Conference, Japanese Society of Snow and Ice, 2006, 0, 221, 221, 2006
  THE JAPANESE SOCIETY OF SNOW AND ICE, Japanese
• Seasonal patterns of fine root biomass, production and mortality in a cool-temperate forest in northern Japan
  Fukuzawa Karibu; Shibata Hideaki; Takagi Kentaro; Satoh Fuyuki; Koike Takayoshi; Sasa Kaichiro, The Japanese Forest Society Congress, 117, 0, 61, 61, 2006
  THE JAPANESE FORESTRY SOCIETY
• The effect of the forestry practice such as lumbering and planting on the material circulation in the forest watershed of the cool temperate zone.
  高木健太郎; 野村睦; 福澤加里部; 柴田英昭; 深澤達矢; 秋林幸男; 笹賀一郎; 小池孝良; 藤沼康実; 梁乃申; 小熊宏之; 米康充; 犬飼孔; 前林衛, 炭素循環および温室効果ガス観測ワークショップ講演要旨集 平成18年, 146, 147, 2006
  Japanese
• Report on the AsiaFlux Training Course 2006.
  Saigusa, N; Takagi, K; Yuta, S; Hirata R, AsiaFlux Newsletter, 20, 1, 2, 2006
  English, Meeting report
• 航空機LIDARを用いた樹高と森林蓄積量の評価
  高橋廣行; 高木健太郎; 野村睦; 北條元; 上浦達哉; 小塚力; 坂井励; 米康充; 福士亮太; 小熊宏之; 藤沼康実; 前林衛, 日本林学会北海道支部論文集, 54, 93, 95, 2006
  Japanese, Summary national conference
• PENシステム導入によるカラマツ植林地の連続分光計測
  小熊宏之; 井手玲子; 中路達郎; 藤沼康実; 高木健太郎, 日本林学会北海道支部論文集, 54, 85, 86, 2006
  Japanese, Summary national conference
• FACE（開放系大気CO2増加）に生育する落葉広葉樹の水分生理特性
  森井紀子; 江口則和; 船田良; 高木健太郎; 日浦勉; 笹賀一郎; 小池孝良, 日本林学会北海道支部論文集, 54, 64, 66, 2006
  Japanese, Summary national conference
• FACE（開放系大気CO2増加）で生育した落葉広葉樹の光合成特性
  唐津一樹; 飛弾剛; 江口則和; 上田龍四郎; 高木健太郎; 日浦勉; 笹賀一郎; 小池孝良, 日本林学会北海道支部論文集, 54, 61, 63, 2006
  Japanese, Summary national conference
• 高CO2環境下で生育したブナとウダイカンバの呼吸特性－開放系大気CO2増加（FACE）を用いた場合－
  飛弾剛; 唐津一樹; 江口則和; 高木健太郎; 日浦勉; 笹賀一郎; 小池孝良, 日本林学会北海道支部論文集, 54, 58, 60, 2006
  Japanese, Summary national conference
• 高CO2環境下での冷温帯樹木の水利用特性の変化が葉柄の内部構造に与える影響
  江口則和; 森井紀子; 上田龍四郎; 船田良; 高木健太郎; 日浦勉; 笹賀一郎; 小池孝良, 日本林学会北海道支部論文集, 54, 49, 51, 2006
  Japanese, Summary national conference
• 天塩研究林におけるバイオマス調査について
  小塚力; 野村睦; 高木健太郎; 上浦達哉; 北條元; 高橋廣行; 坂井励; 林業技能補佐員, 北方森林保全技術, 24, 1, 11, 2006
  Japanese, Introduction research institution
• AsiaFlux Workshop 2005 (International Workshop on Advanced Flux Network and Flux Evaluation) 報告
  高木健太郎; 安田幸生, 水文・水資源学会誌, 19, 151, 155, 2006
  Japanese, Meeting report
• AsiaFluxワークショップ2005 (4th AsiaFlux Workshop)の報告
  安田幸生; 高木健太郎, 生物と気象, 6, 11, 14, 2006
  Japanese, Meeting report
• 第4回AsiaFluxワークショップ2005報告
  山本哲; 高木健太郎; 安田幸生; 三枝信子, 天気, 53, 5, 23, 28, 2006
  Japanese, Meeting report
• CO₂濃度上昇が冷温帯樹木の光合成特性に与える影響:2年間のFACE実験からの考察
  江口則和; 唐津一樹; 網野真一; 上田龍四郎; 船田良; 高木健太郎; 日浦勉; 笹賀一郎; 小池孝良, 日本生態学会大会講演要旨集, 52nd, 0, 254, 558, 27 Mar. 2005
  長期間高CO₂処理をすると光合成能力は低下するといわれているが、その原因には不明な点が多い。本研究では、自然状態でCO₂を付加できるFACE（Free Air CO₂ Enrichment)を用いて、北海道に広く生育するケヤマハンノキ、シラカンバ、ウダイカンバの光合成変化とその原因を調べた。 CO₂濃度はFACE内を2040年頃を想定して50 Pa、対照区は現在の37 Paであった。高CO₂環境下での反応は土壌栄養に影響を受けることから、各条件の半分を富栄養の褐色森林土（High N）、残りを貧栄養の火山灰土壌（Low N）とした。光合成能力低下は葉内の"窒素量の低下"、"Rubisco量の低下"、"デンプン量の増加"によるといわれているため、CO₂処理2年目の夏に光合成測定した後、測定葉を採取しこれら3項目を測定した。 いずれの樹種も光合成能力の低下は認められたが、土壌条件によって低下しない場合もあった。ケヤマハンノキでは、光合成能力の低下はデンプンの増加が原因と考えられた。光合成能力が低下しなかったLow N条件では、デンプンの増加は認められなかった。シラカンバ・ウダイカンバでは、光合成能力低下はRubisco量の低下が原因と考えられた。光合成能力が低下しなかったウダイカンバのHigh N条件では、Rubiscoの低下は認められなかった。 以上から、"ケヤマハンノキ"と"シラカンバ・ウダイカンバ"とで、光合成能力低下の原因は異なることが分かった。この原因はケヤマハンノキのみが窒素固定菌（Frankia spp.）と共生しているためだと考えられる。, ECOLOGICAL SOCIETY OF JAPAN, Japanese
• 「長期観察林」データと航空機レーザー計測を用いた森林計測
  高橋広行; 高木健太郎; 野村睦; 菅田定雄; 北条元; 浪花彰彦; 小塚力; 米康充; 小熊宏之; 藤沼康実, 日本森林学会大会講演要旨集(CD-ROM), 116th, 0, 1C08, 277, 20 Mar. 2005
  日本森林学会, Japanese
• The behavior of metallic components in the forest
  HIRAJIMA Kunito; HAMAYA Motohiro; TOBISAWA Takuya; FUKAZAWA Tatsuya; TACHIBANA Harukuni; FUKUZAWA Karibu; SHIBATA Hideaki; NOMURA Mutsu; TAKAGI Kentaro; FUJINUMA Yasumi, Doboku Gakkai Ronbunshuu G, 13, 317, 322, 2005
  To understand the behavior of metals in forest area, we collected atmospheric aerosol, fallout and river water samples in every two weeks from June of 2002 to December of 2004 in the Teshio Experimental Forest (45°03'N, 142°07'E a. s. 1.66m). And all samples were analyzed by ICP-MS for metals, such as Fe, Al, Ti, Ba, Sr, Mn, Zn, Pb.<BR>Atmospheric concentrations of Fe, A1, Pb, Mn and Sr in both aerosols and fallouts increased in winter. However, the atmospheric Zn and Ba in aerosols increased during winter, but in the fallouts.<BR>In the event of rainfall, Ba, Sr and Mn concentrations in river water, those were mainly plant origin, were decreasing with increasing in the flow. On the contrary, Al and Ti. concentrations in the water, those were mainly soil origin, were increasing in the same period. As for Fe, also soil origin was decreasing in the period. In thaw season, Fe, Ba and Sr concentrations decreased with increasing in flow, however, Al and Zn concentrations increased. In comparison the annual output from the river water with the annual input from the fallouts. As for Al, Fe, Sr and Ba, the output exceeded the input. As for Zn and Pb, the input exceeded the output. As for Mn and Ti, the input and the output were nearly equal., Japan Society of Civil Engineers
• Snowmelt runoff observations at a forestry operated basin (2)
  NOMURA Muutumi; Takahashi Hiroyuki; SUGATA Sadao; SASA Kaichiro; SHIBATA Hideaki; TAKAGI Kentaro; HOJO Hajime; ASHIYA Daitaro; NANIWA Akihiko; KOZUKA Chikara; FUJINUMA Yasumi, Preprints of the Annual Conference, Japanese Society of Snow and Ice, 2005, 0, 105, 105, 2005
  THE JAPANESE SOCIETY OF SNOW AND ICE
• Deforestation effect on the water balance in a cool-temperate forested watershed, Hokkaido
  Takagi Kentaro; Nomura Mutsumi; Shibata Hideaki; Fukuzawa Karibu; Sasa Kaichiro; Akibayashi Yukio; Satoh Fuyuki; Fujinuma Yasumi, The Japanese Forest Society Congress, 116, 0, 717, 717, 2005
  THE JAPANESE FORESTRY SOCIETY
• 火山灰地カラマツ人工林における降水動態と炭素フロ_-_
  笹 賀一郎; 佐藤 冬樹; 柴田 英昭; 高木 健太郎; 高畠 守; 福井 富三; 藤戸 永志; 有倉 清美; 石田 亘生; 奥山 悟; 石井 正; 奥田 篤志; 福澤 加; 藤沼 康美; 犬飼 孔, 日本森林学会大会発表データベース, 116, 0, 737, 737, 2005
  THE JAPANESE FORESTRY SOCIETY, Japanese
• 北海道北部天然林の炭素吸収能と便益の評価
  秋林幸男; 高木健太郎; 野村睦; 北條元; 菅田定雄; 柴田英昭; 福澤加里部; 吉田俊也; 小池孝良; 笹賀一郎; 藤沼康実; 前林衛, 北方林業, 57, 8, 176, 179, 2005
  Japanese, Introduction commerce magazine
• Growth characteristics and seasonal change of photosynthetic capacity in canopy of hybrid larch (Larix gmelinii x L. kaempfreri)
  KAYAMA Masazumi; NOMURA Mutsumi; SASA Kaichiro; KOIKE Takayoshi; KITAOKA Satoshi; WANG Wengie; CHOI Dongsu; JI Donghum; SUGATA Sadao; HOJYO Hajime; NANIWA Akihiko; TAKAGI Kentaro, Transactions of the Meeting in Hokkaido Branch of the Japanese Forest Society, 53, 0, 49, 51, 2005
  Boreal Forest Society, Japanese, Summary national conference
• Free Air CO2 Enrichment (FACE)により高CO2処理された落葉広葉樹稚樹の光合成特性とRubiscoの応答
  唐津一樹; 網野真一; 江口則和; 上田龍四郎; 高木健太郎; 小池孝良, 日本林学会北海道支部論文集, 53, 76, 78, 2005
  Japanese, Summary national conference
• FACE (Free Air CO2 Enrichment)を用いた高CO2濃度処理が落葉樹稚樹へ与える影響－成長と生理反応, 2年間の結果－
  江口則和; 唐津一樹; 上田龍四郎; 船田良; 高木健太郎; 日浦勉; 笹賀一郎; 小池孝良, 日本林学会北海道支部論文集, 53, 73, 75, 2005
  Japanese, Summary national conference
• 航空機LIDARによる森林の計測
  高橋廣行; 高木健太郎; 野村睦; 北條元; 小塚力; 浪花彰彦; 菅田定雄; 藤沼康実; 小熊宏之; 米康充, 北方森林保全技術, 23, 23, 1, 4, 2005
  北海道大学北方生物圏フィールド科学センター森林圏ステーション, Japanese, Introduction research institution
• 中の峰平湿原における土壌中金属成分の鉛直成分
  平島 邦人; 深澤 達矢; 橘 治国; 柴田 英昭; 野村 睦; 高木 健太郎, 衛生工学シンポジウム論文集, 12, 48, 52, 31 Oct. 2004
  北海道大学衛生工学会, Japanese
• 中の峰平湿原における有機塩素系農薬類に関する研究
  塩谷 光広; 深澤 達矢; 橘 治国; 柴田 英昭; 野村 睦; 高木 健太郎, 衛生工学シンポジウム論文集, 12, 53, 56, 31 Oct. 2004
  北海道大学衛生工学会, Japanese
• 森林地域における河川及び土壌水中の金属成分に関する研究
  濱谷 基弘; 深澤 達矢; 橘 治国; 柴田 英昭; 野村 睦; 高木 健太郎, 衛生工学シンポジウム論文集, 12, 85, 88, 31 Oct. 2004
  北海道大学衛生工学会, Japanese
• 開放系大気CO₂増加実験(FACE)による落葉樹数種の成長と生理応答
  江口則和; 上田龍四郎; 船田良; 高木健太郎; 日浦勉; 笹賀一郎; 小池孝良, 日本林学会大会学術講演集, 115th, 212, 20 Mar. 2004
  Japanese
• Sowmelt runoff observations at a forestry operated basin
  NOMURA Mutumi; Takahashi Hiroyuki; Sugata Sadao; Sasa Kaiciro; Shibata Hideaki; Takagi Kentaro; HOJO Hajime; ASHIYA Daitaro; NANIWA Akihiko; Kozuka Chikara; Fujinuma Yasumi, Preprints of the Annual Conference, Japanese Society of Snow and Ice, 2004, 0, 58, 58, 2004
  THE JAPANESE SOCIETY OF SNOW AND ICE
• 開放系大気CO2増加実験（FACE）による落葉樹数種の成長応答
  江口則和; 船田良; 上田龍四郎; 高木健太郎; 日浦勉; 笹賀一郎; 小池孝良, 日本林学会北海道支部論文集, 52, 66, 68, 2004
  Japanese, Summary national conference
• カラマツ若齢林の炭素循環機能に関する観測研究プロジェクト
  菅田定雄; 高木健太郎; 北條元; 浪花彰彦; 高橋廣行; 小塚力; 野村睦; 杉下義幸; 芦谷大太郎; 秋林幸男; 林業技能補佐員, 北方森林保全技術, 22, 22, 1, 5, 2004
  北海道大学北方生物圏フィールド科学センター森林圏ステーション, Japanese, Introduction research institution
• 北海道北部針広混交林における皆伐施業が微気象および炭素・水循環に与える影響
  高木健太郎; 野村睦; 柴田英昭; 笹賀一郎; 秋林幸男; 佐藤冬樹; 小池孝良; 福澤加里部; 香山雅純; 藤沼康実; 前林衛, 北方林業, 56, 9, 197, 200, 2004
  北方林業会, Japanese, Introduction commerce magazine
• 森林の炭素固定機能に配慮した環境林の造成の試み
  高木 健太郎, 北方林業, 56, 12, 279, 282, 2004
  北方林業会, Japanese, Introduction commerce magazine
• 北海道北部の冷温帯林における地上部および地下部の生産量・枯死量
  福澤 加里部; 柴田 英昭; 高木 健太郎; 佐藤 冬樹; 笹賀 一郎; 小池 孝良, 根の研究 = Root research, 12, 4, 210, 210, 19 Dec. 2003
  はじめに:大気から森林生態系に固定された炭素の挙動については不明な点が多い。地下部へ転流する光合成産物の割合や、土壌の炭素収支の構成要因として、植生の根系から土壌への炭素移入量については定量的に明らかとなっていない。本研究では、土壌－植生系の炭素・養分循環における細根動態の役割を明らかにすることを目的に、細根生産量・細根枯死量を定量的に算出し、地上部生産量・リターフォールと比較した, 根研究学会, Japanese
• Study on the estimation of forest biomass in Teshio Experimental Forest, Hokkaido University
  Naniwa Akihiko; Sugata Sadao; Hojyo Hajime; Takahashi Hiroyuki; Takagi Kentaro; Nomura Mutsumi; Sugishita Yoshiyuki; Shibata Hideaki; Akibayashi Yukio; Kayama Masazumi; Fukuzawa Karibu, Technical report for boreal forest conservation of the Hokkaido University Forests, 21, 21, 26, 30, Dec. 2003
  北海道大学北方生物圏フィールド科学センター森林圏ステーション, Japanese, Introduction research institution
• 森林地域における大気汚染物質の沈着
  飛澤 拓也; 深澤 達矢; 清水 達雄; 橘 治国; 永淵 修; 柴田 英昭; 野村 睦; 高木 健太郎, 衛生工学シンポジウム論文集, 11, 143, 146, 31 Oct. 2003
  北海道大学衛生工学会, Japanese
• 森林河川における大気起源化学物質の流出
  濱谷 基弘; 深澤 達矢; 清水 達雄; 橘 治国; 永淵 修; 柴田 英昭; 野村 睦; 高木 健太郎, 衛生工学シンポジウム論文集, 11, 147, 150, 31 Oct. 2003
  北海道大学衛生工学会, Japanese
• A Watershed-Scale Experiment on the Carbon Cycle of a Larch Plantation "CC-LaG (Carbon Cycle and Larch Growth) Experiment"
  Takagi, K; Sasa, K; Koike, T; Maebayashi, M; Fujinuma, Y, AsiaFlux Newsletter, 5, 4, 7, 2003
  English, Report scientific journal
• ミズナラ-ササ生態系における炭素および養分の現存量と循環
  福沢加里部; 柴田英昭; 佐藤冬樹; 笹賀一郎; 高木健太郎; 吉田俊也; 秋林幸男, 日本林学会大会学術講演集, 113th, 2002
• 森林伐採・育林などの森林施業が二酸化炭素吸収に与える影響を解明する－北海道大学天塩研究林における大規模野外実験－
  北條元; 高木健太郎; 笹賀一郎; 小池孝良; 秋林幸男; 野村睦; 柴田英昭; 吉田俊也; 杉下義幸; 菅田定雄; 小林信; 芦谷大太郎; 浪花彰彦; 福澤加里部; 藤沼安実; 高田雅之; 前林衛; 酒井一弘, 北方林業, 54, 245, 247, 2002
  Japanese, Introduction commerce magazine
• 観測結果のデータベース化. フラックス観測の最近の進歩
  高木 健太郎, 日本農業気象学会フラックス観測・評価部会編, 42, 47, 2002
  Japanese, Introduction other
• 第9回日米セミナー：地球変動ワークショップ「陸域生態系における炭素循環マネージメント」報告
  高木健太郎; 小池孝良, 北方林業, 54, 1, 15, 18, 2002
  北方林業会, Japanese, Meeting report
• インターネット公開・利用型の森林情報データベースの開発
  高木健太郎; 小宮圭示; 柴田英昭; 藤戸永志; 市川一; 高畠守; 間宮春大, 北方森林保全技術, 19, 63, 68, 2001
  Japanese, Introduction research institution
• Inspection of the flux monitoring site of greenhouse gas in the permafrost region-Barrow Research Station in Alaska,U.S.A.
  MAMIYA Haruhiro; TAKAGI Kentaro, Technical report for boreal forest conservation of the Hokkaido University Forests, 19, 45, 49, 2001
  Hokkaido University, Japanese, Introduction research institution
• Photosynthetic capacity of hybrid larch and dwarf bamboo grown in the Teshio Experimental Forest located near the border between Russia and Japan
  Proceeding of International Workshop for Advanced Flux Network and Flux Evaluation, 105, 108, 2001
• Evaluation of annual budgets of CH4 and CO2 at a lotus paddy field in central Japan
  Proceeding of International Workshop for Advanced Flux Network and Flux Evaluation, 165, 169, 2001
• Seasonal changes in the photosynthetic capacity of Japanese larch trees planted on the Tomakomai National Forest, northern Japan
  Proceeding of International Workshop for Advanced Flux Network and Flux Evaluation, 109, 112, 2001
• Respiration of non-photosynthetic organs and forest soil of Japanese larch plantation and its contribution to CO2 flux estimation
  Proceeding of International Workshop for Advanced Flux Network and Flux Evaluation, 119, 123, 2001
• AsiaFluxワークショップ2000 (International Workshop for Advanced Flux Network and Flux Evaluation－Kick off meeting of AsiaFlux Network－)報告
  高木健太郎; 溝口康子; 鈴木智恵子, 生物と気象, 1, 23, 28, 2001
  Japanese, Meeting report
• フラックス観測の展望
  高木 健太郎, 北方森林保全技術, 18, 43, 47, 2000
  Japanese, Introduction research institution
• Agro-environment information database using WWW ""Ecosystem Database""
  HARAZONO Yoshinobu; KOMINE Masashi; TAKAGI Kentaro; KOMURO Hirokazu, Bulletin of the Computing Centre for Research in Agriculture, Forestry and Fishery Series B, B13, 1, 118, 2000, [Peer-reviewed]
  Japanese, Introduction research institution
• WWW公開型の微気象・フラックスデータベースの開発
  原薗 芳信; 小峰 正史; 高木 健太郎, 農業気象研究集録, 40, 5(173, 178), Dec. 1999
  農業環境技術研究所地球環境部気象研究グループ, Japanese
• 研究用Eco-DBシステムの開発とデータベースネットワーク化
  原薗 芳信; 高木 健太郎; 小峰 正史; 小林 義和; 小室 浩一, 大会講演予講集, 76, 372, 372, 24 Nov. 1999
  Japanese
• Diurnal hystereses of stomatal and bulk surface conductances in relation to vapor pressure deficit in a cool-temperature wetland (vol 91, pg 171, 1998)
  K Takagi; T Tsuboya; H Takahashi, AGRICULTURAL AND FOREST METEOROLOGY, 93, 1, 71, 72, Jan. 1999
  English, Others
• サロベツ湿原のササ群落とミズゴケ群落の蒸発散特性－植物個体の気孔制御の視点から－
  高木健太郎; 坪谷太郎; 井上京; 高橋英紀, 北方林業, 51, 8, 185, 189, 1999
  北方林業会, Japanese, Introduction commerce magazine
• 用語解説・気孔抵抗とポロメータ
  高木 健太郎, 北海道の農業気象, 48, 54, 55, 1996
  Japanese, Introduction scientific journal

• The soils of Japan
  Ryusuke, Hatano; Shinjo, Hitoshi; Takata, Yusuke, Hokkaido Region
  Springer, Feb. 2021, 9789811582288, xxiii, 372 p., 135-184, English, Scholarly book, [Joint work]
• 大気環境と植物
  伊豆田, 猛; 青野, 光子; 石田, 厚; 北尾, 光俊; 黄瀬, 佳之; 佐治, 光; 佐瀬, 裕之; 高木, 健太郎(地球環境科学); 玉置, 雅紀; 徳地, 直子; 中路, 達郎; 増冨, 祐司; 松田, 和秀; 松村, 秀幸; 山口, 真弘; 米倉, 哲志; 渡辺, 誠(農学), 4.4章 森林生態系に対する温暖化の影響
  朝倉書店, Oct. 2020, 9784254420456, vii, 162p, 図版2枚, 122-129, Japanese, Textbook, [Joint work]
• 森林と地球環境変動
  三枝, 信子; 柴田, 英昭, 第5章 北方林への気候変動の影響
  共立出版, Dec. 2019, 9784320058224, xii, 216p, 図版 [12] p, 116-145, Japanese, Scholarly book, [Joint work]
• 湿地の科学と暮らし : 北のウェットランド大全
  ウェットランドセミナー100回記念出版編集委員会; 矢部, 和夫; 山田, 浩之(農学); 牛山, 克巳; 原口, 昭; 平野, 高司; 島田, 沢彦; 中村, 隆俊(農学); Hotes, Stefan; 釜野, 靖子; 藤村, 善安; 山崎, 真実; 若菜, 勇; 中山, 恵介(環境学); 根岸, 淳二郎; 三浦, 一輝; 桑原, 禎知; 玉田, 克巳; 大澤, 剛士; 高木, 健太郎(地球環境科学); 矢崎, 友嗣; 山田, 雅仁; 木塚, 俊和; 吉田, 磨, 大気・湿原生態系間の水とエネルギー
  北海道大学出版会, Apr. 2017, 9784832982284, x, 364p, 163-172, Japanese, Scholarly book, [Joint work]
• 北海道の気象と農業
  日本農業気象学会北海道支部, 森林土壌への温暖化の影響
  北海道新聞社, Nov. 2012, 9784894536739, 382p, 355-359, Japanese, General book, [Joint work]
• 北海道の森林
  北方森林学会, 森林のCO2固定
  北海道新聞社, Nov. 2011, 9784894536227, 319p, 116, Japanese, General book, [Joint work]
• 北の森づくりQ&A
  北方林業会, 森は二酸化炭素をどのくらい吸収する？
  社団法人北方林業会, 2009, 201, 24-25, [Joint work]
• 森林の科学 : 森林生態系科学入門
  中村, 太士; 小池, 孝良, 森林生態系の二酸化炭素吸収量を調べる
  朝倉書店, Sep. 2005, 9784254470383, xiv, 218p, 6-7, Japanese, Textbook, [Joint work]

• 大学院共通授業科目（一般科目）：自然科学・応用科学, 2024年, 修士課程, 大学院共通科目
• 北方生態系の生物多様性基礎論, 2024年, 修士課程, 環境科学院
• 森林圏科学特論Ⅰ, 2024年, 修士課程, 環境科学院
• 一般教育演習(ﾌﾚｯｼｭﾏﾝｾﾐﾅｰ), 2024年, 学士課程, 全学教育
• 森林空間機能学, 2024年, 学士課程, 農学部
• 国際交流Ⅱ, 2024年, 学士課程, 国際本部
• 英語演習, 2024年, 学士課程, 全学教育
• 森林空間機能学演習, 2024年, 学士課程, 農学部

• 日本森林学会
• 日本農業気象学会
• 日本農業気象学会北海道支部会
• 日本生態学会
• The Japanese Forest Society
• The Society of Agricultural Meteorology of Japan
• Ecological Society of Japan

• 北方森林圏データベース
  2001
• Forest Research Database
  2001

• 森林動態モデルによる生物多様性と気候変動の両者課題の同時解決策
  科学研究費助成事業
  Oct. 2022 - Mar. 2026
  森 章; 高木 健太郎; 小林 勇太
  当研究グルーぷは、これまでに「樹種多様性に富む森林ほど炭素隔離と貯留を促進する」といった観察パターンの背景メカニズムを探る野外大規模実験を実施している。ここに、個体ベースのプロセスモデルを併用することで、フィールド実験だけでは不可能な空間的・時間的スケールでの樹木多様性実験をバーチャルに実施する。得られる結果により、炭素と生物多様性の保全・回復を両立させる費用対効果の高い森林再生モデルを特定し、自然生態系の機能性に基づく国際環境政策の議論の基礎となる科学的根拠を提供する。
  日本学術振興会, 国際共同研究加速基金(国際共同研究強化(B)), 東京大学, 22KK0102
• 異なる観測手法の組合せによる森林のオゾン吸収量推定プロセスモデルの構築
  科学研究費助成事業
  01 Apr. 2022 - 31 Mar. 2025
  渡辺 誠; 黄瀬 佳之; 高木 健太郎; 松田 和秀
  オゾンは森林に悪影響を与える大気汚染物質であり、適切な影響評価のためには樹木の葉の気孔から吸収されるオゾン量の評価が必要である。本研究では、【サブテーマ1】は樹木生理生態学的な推定法2種（樹液流速に基づく推定と多層葉群光合成モデルによる推定）、【サブテーマ2】は微気象学的推定法2種（濃度勾配法および潜熱フラックスに基づく推定）によって、森林のオゾン吸収速度を推定し、【サブテーマ3】において、それらを統一的に比較・解析する。
  【サブテーマ1】樹液流速に基づくオゾン吸収量の推定では、コナラ、アラカシおよびスギを対象に通年の観測を実施した。前年度より調査サイトで発生しているナラ枯れの影響で、一部のコナラ対象木が枯死してしまったが、以前の観測結果も含めて、すべての樹種で通年の観測を実施できた。多層葉群光合成モデルによるオゾン吸収量の推定では、スギにおいて、前年度に測定したガス交換特性の林冠内鉛直分布に基づき、林冠位置とオゾン吸収能力の関係をモデルシミュレーションによって明らかにした。
  【サブテーマ2】濃度勾配法によるオゾン吸収量の推定では、昨年度より導入したキャノピー濃度勾配法を用いて大気から森林へのオゾンフラックスを測定した。年間を通してフラックスは沈着を示し、沈着速度は昼間に高く夜間に低い日内変動を示した。昼間のピークは正午前に現れる傾向を示した。潜熱フラックスに基づくオゾン吸収量の推定では、調査サイトの観測鉄塔を用いて、高度30mの水・熱・CO2フラックスの連続観測を継続し、乱流傾度法における拡散速度の観測・解析を行った。
  【サブテーマ3】これまでに開発してきた多層葉群光合成モデルを用いた気孔からのオゾン吸収モデルをベースに、新たにクチクラや土壌への沈着プロセスを組み込んだモデルを開発した。これにより、サブテーマ1とサブテーマ2を統一的に比較・検証ができるようになった。
  日本学術振興会, 基盤研究(B), 東京農工大学, 23K24984
• Evaluation of long-term carbon dynamics of northern forests and their dependencies on environment and forest structure using remote sensing and ground surveys
  Grants-in-Aid for Scientific Research
  Apr. 2022 - Mar. 2025
  高木 健太郎; 吉田 俊也; 小林 真; 佐藤 永; 森 章
  北海道大学天塩研究林において航空機レーザ―測量を行い、2022年の樹冠表面標高(DSM)と2014年の地盤標高（DTM）の差分として樹冠高を1mメッシュで評価した。樹冠高の１ha平均値と森林バイオマスとの既存の関係を用いて、1haメッシュで2022年の森林バイオマスを評価するとともに、2014年から2022年までの森林バイオマスの変化量を評価した。この期間、森林バイオマスは年平均0.87±0.91 MgC/ha（n=23241）増加していた。この量は2004年から2014年の年平均値(0.42±0.66 MgC/ha)のおおよそ２倍であり、特に増加量が-0.5～1MgC/ha/年の林分が減少し、1～3MgC/ha/年の林分が増加していた。
  航空機レーザ測量によって評価した1haメッシュの森林バイオマス分布を地上検証データとして利用し、使用権料の発生しない衛星情報を利用して森林バイオマスを推定する機械学習モデルを開発した。モデルによる森林バイオマスの再現能力は決定係数が0.77、相対平均標準誤差が21.7%であった。
  長期観察林の観測情報より得られた北方林の森林動態に関するパラメータを組み込んだ個体ベースの森林動態モデルを開発した。研究対象地域においては、標高と地形湿潤度が森林のバイオマスや針葉樹の割合に影響を与えており、各樹種について、乾燥・湿潤耐性や定着率、枯死率を調整することにより、実際の森林タイプの分布パターンを再現することができた。75年シミュレーションの森林バイオマスが一番再現性が高く、これには同程度の頻度で出現する壊滅的な台風の影響を受けている可能性が示唆された。しかし針葉樹/広葉樹の割合を再現するにはさらなるモデルの改良が必要である。
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 23K23643
• 異なる観測手法の組合せによる森林のオゾン吸収量推定プロセスモデルの構築
  科学研究費助成事業
  Apr. 2022 - Mar. 2025
  渡辺 誠; 黄瀬 佳之; 高木 健太郎; 松田 和秀
  日本学術振興会, 基盤研究(B), 東京農工大学, 22H03730
• Evaluation of long-term carbon dynamics of northern forests and their dependencies on environment and forest structure using remote sensing and ground surveys
  Grants-in-Aid for Scientific Research
  Apr. 2022 - Mar. 2025
  高木 健太郎; 吉田 俊也; 小林 真; 佐藤 永; 森 章
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 22H02378
• The experiment for understanding the causes and consequences of tree diversity changes in forests
  Grants-in-Aid for Scientific Research
  Apr. 2020 - Mar. 2025
  森 章; 高木 健太郎; 佐々木 雄大; 小林 真
  森林を対象とした基礎及び応用科学のニーズは高い。日本学術会議でも、持続可能な森林管理に向けた早急な対策と科学の在り方が強調されている。同様なニーズは、国連の枠組下での森林原則声明をはじめ、繰り返し強調され続けている。2019年に、気候変動に関する政府間パネルが公表した「気候変動と土地関係特別報告書」の政策立案者向け要約版でも、より良い土地利用の在り方としての持続可能な森林管理が、気候変動対策に必須としている。森林に求める公益性は、木材生産だけではない。樹種多様化による森林の炭素隔離と貯蔵能力の向上は、気候変動の著しい今、社会にとって必須の生態系サービスである。多種多様な生物種からなる森林を維持し、持続可能に管理することの必要性が問われる今、炭素吸収源としての森林の役割を再精査する必要がある。
  
  
  なお、生物多様性が生態系の機能性を高め、生態系サービスを維持するという事象に関する理論的知見は、草地試験地における多様性操作を中心に理解を深めてきた。一方で、数多の公益的機能とサービスを提供する森林生態系についての知見はまだまだ限定的である。多種多様な生物種からなる森林を維持し、持続可能な形で管理することの必要性が問われる今、さらなる知見の集積が求められている。
  
  
  本研究プロジェクトでは、野外で樹木多様性を操作する植栽試験を大規模に実施している。とくに、多種共存メカニズムに着目し、自然のプロセスにより多様性が維持されている状況を再現したことに新規性がある。今後は、その結果としての一次生産等の生態系能性への帰結を評価することを計画している。得られるデータにより、「生物多様性が生態系機能を支えるメカニズム」の基本的な理解を得て、自然科学の理論に根差した森林管理の在り方を模索する。そして、この目的の達成のために、植栽実験地の維持管理、データ取得、また実験地の広く研究者や学生への公開利用を進める。
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), 23K20306
• The experiment for understanding the causes and consequences of tree diversity changes in forests
  Grants-in-Aid for Scientific Research
  Apr. 2020 - Mar. 2025
  森 章; 高木 健太郎; 佐々木 雄大; 小林 真
  森林を対象とした基礎及び応用科学のニーズは高い。日本学術会議でも、持続可能な森林管理に向けた早急な対策と科学の在り方が強調されている。同様なニーズは、国連の枠組下での森林原則声明をはじめ、繰り返し強調され続けている。2019年に、気候変動に関する政府間パネルが公表した「気候変動と土地関係特別報告書」の政策立案者向け要約版でも、より良い土地利用の在り方としての持続可能な森林管理が、気候変動対策に必須としている。森林に求める公益性は、木材生産だけではない。樹種多様化による森林の炭素隔離と貯蔵能力の向上は、気候変動の著しい今、社会にとって必須の生態系サービスである。多種多様な生物種からなる森林を維持し、持続可能に管理することの必要性が問われる今、炭素吸収源としての森林の役割を再精査する必要がある。
  
  
  なお、生物多様性が生態系の機能性を高め、生態系サービスを維持するという事象に関する理論的知見は、草地試験地における多様性操作を中心に理解を深めてきた。一方で、数多の公益的機能とサービスを提供する森林生態系についての知見はまだまだ限定的である。多種多様な生物種からなる森林を維持し、持続可能な形で管理することの必要性が問われる今、さらなる知見の集積が求められている。
  
  
  本研究プロジェクトでは、野外で樹木多様性を操作する植栽試験を大規模に実施している。とくに、多種共存メカニズムに着目し、自然のプロセスにより多様性が維持されている状況を再現したことに新規性がある。今後は、その結果としての一次生産等の生態系能性への帰結を評価することを計画している。得られるデータにより、「生物多様性が生態系機能を支えるメカニズム」の基本的な理解を得て、自然科学の理論に根差した森林管理の在り方を模索する。そして、この目的の達成のために、植栽実験地の維持管理、データ取得、また実験地の広く研究者や学生への公開利用を進める。
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), 20H03320
• メタン吸収能を含めたアジア域の森林における土壌炭素動態の統括的観測に基づいた気候変動影響の将来予測
  環境省環境研究総合推進費
  Apr. 2020 - Mar. 2023
  梁乃申; 高橋善幸; 高木健太郎; 平野高司; 石田祐宣; 髙木正博; 市井和仁; 近藤俊明; 小嵐淳; 安藤麻里子; 寺本宗正
  独立行政法人環境再生保全機構, 環境省環境研究総合推進費, 国立環境研究所, 2-2006
• 土壌有機炭素モデルで解き明かす、森林伐採に対する土壌中貯留炭素動態の長期応答
  科学研究費助成事業
  Apr. 2020 - Mar. 2023
  太田 雅和; 小嵐 淳; 高木 健太郎; 梁 乃申
  本研究は、森林伐採に対する土壌中の炭素循環の応答機構解明と、国内の森林伐採区からの炭素放出量評価を目的としている。森林は、全球平均では正味の炭素吸収源として働いている。一方、東南アジアや南米で盛んな森林伐採により、全球の吸収量の3倍の炭素が大気へと放出されている。成熟した森林では、リターフォールおよび根枯死による植物遺体由来の炭素供給と、微生物分解による炭素(CO2)放出が均衡し、土壌中に一定量の炭素が貯留されている。伐採に伴う植生の遷移によって土壌への炭素供給量が変化した場合、それまでに土壌に貯留されていた炭素が大気へ放出される可能性がある。樹木の根が深く伸長する森林では、表層(深度およそ30cmの層)以深の土壌に多く(5割超)の炭素が貯留されている。このため、伐採に伴う土壌からの炭素放出は、表層のみならず、それ以深の土壌において顕著に起こる可能性がある。しかし、既往研究の多くは有機物が密に存在する表層土壌を対象としていること、土壌深部の炭素循環を観測する有効な術が無いことから、森林伐採に起因する土壌（浅部から深部）からの炭素放出の評価は困難であった。
  そこで、本研究は、土壌の浅部から深部まで炭素循環を予測できる土壌有機炭素循環モデルに、森林樹木内炭素動態を組み込み、これを実在する皆伐・植林サイトでの観測・分析結果を通してパラメタリゼーションし、森林伐採時の陸域炭素循環を定量的に評価可能なものとして確立することで、上述の問題を解決する。このために、令和3年度は、令和2年度に構築した森林内炭素循環モデルの検証として、当モデルを国内の皆伐・植林サイトに適用し、モデルが皆伐以前および皆伐後の森林樹木や下草の植生バイオマス蓄積を概ね再現することを確認した。加えて、皆伐・植林サイトでの観測を継続実施することで森林内炭素循環データセットの拡充を実施した。
  日本学術振興会, 基盤研究(C), 国立研究開発法人日本原子力研究開発機構, 20K12143
• Mechanism of gas and particulate reactive nitrogen deposition for evaluation of nitrogen load to ecosystem
  Grants-in-Aid for Scientific Research
  Apr. 2016 - Mar. 2019
  Matsuda Kazuhide; Takagi Kentaro; Sakurai Tatsuya; Hayashi Kentaro; Chanonmuang Phuvasa
  In order to better understand the mechanism of gas and particulate reactive nitrogen deposition to forests, we carried out dry deposition measurements in a temperate mixed forest, a cool temperate larch forest and a tropical dry deciduous forest.
  These measurements clearly showed the difference in dry deposition process between nitrate and sulfate in PM2.5. The concentration gradients of nitrate from over to under the canopy were significantly higher than those of sulfate, during leafy period in all of the forests. Moreover deposition velocities of nitrate greater than theoretical were observed.
  The analyses of numerical models showed that the equilibrium shift of NH4NO3 into the gas phase during the daytime hot canopy can decrease nitrate concentration, and the volatilized HNO3 was immediately removed by the canopy. Therefore, the equilibrium shift enhanced the dry deposition of nitrogen within nitrate.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Tokyo University of Agriculture and Technology, 16H02933
• アジアの森林土壌有機炭素放出の温暖化影響とフィードバック効果に関する包括的研究
  地球環境研究総合推進費
  2017 - 2019
  梁 乃申
  環境省, Competitive research funding
• 森林における炭素循環機能に関する観測研究
  共同研究
  2009 - 2019
  高木 健太郎
  国立環境研究所・北海道電力株式会社, Principal investigator, Competitive research funding
• Influence of advancing snowmelt on northern tree via soil macro fauna
  Grants-in-Aid for Scientific Research
  Apr. 2015 - Mar. 2018
  KOBAYASHI Makoto; TAKAGI Kentaro; KATAYAMA Ayumi
  We have evaluated the effect of advancing snowmelt on the production of inorganic nitrogen, which is available for northern tree, via the change of earthworm, a abundant macro fauna species. As the result of the field manipulation experiment, the advancing snowmelt has increased the production of nitrate in soil. However, the amount of the increased nitrate production was similar between the condition with and without earthworm. Furthermore, the amount of increased nitrate production was similar between the condition with small and large earthworm. These results indicate that, in the forests of northern Hokkaido, the effect of advancing snowmelt on soil inorganic nitrogen production is controlled not by the earthworm and their trait but done by other soil organisms such as soil microbe.
  Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), Hokkaido University, 15K18708
• 寒冷積雪環境下における、樹木の地上部－地下部間の物質の伝達
  挑戦的萌芽研究
  2016 - 2018
  高木 健太郎
  日本学術振興会, Principal investigator, Competitive research funding
• 百mメッシュの空間解像度を目標とした、北方林の広域炭素収支評価手法の確立
  基盤研究(B)
  2014 - 2016
  高木 健太郎
  日本学術振興会, Principal investigator, Competitive research funding
• 開放系オゾン付加施設で生育する冷温帯樹種の成長に及ぼす窒素沈着の影響解明と応用
  基盤研究(B)
  2014 - 2016
  小池 孝良
  日本学術振興会, Competitive research funding
• 北方森林生態系における大規模撹乱後の植生遷移にともなう炭素動態の変化
  基盤研究(A)
  2013 - 2016
  平野 高司
  日本学術振興会, Competitive research funding
• 中国大興安嶺森林－湿原生態系における水・熱および炭素・物質動態と山火事撹乱の影響
  基盤研究(A)
  2011 - 2014
  佐藤 冬樹
  日本学術振興会, Competitive research funding
• 日本における森林土壌有機炭素放出に及ぼす温暖化影響のポテンシャル評価に関する研究
  地球環境保全試験研究費（地球一括計上）
  2010 - 2014
  梁 乃申
  環境省, Competitive research funding
• 開放系大気CO2増加環境での樹木等の光合成と木部生産機能のパラメータ化
  新学術領域研究(研究領域提案型)
  2009 - 2013
  小池 孝良
  日本学術振興会, Competitive research funding
• Long-term evaluation of soil-warming effect on carbon and nitrogen dynamics of Japanese forest soils
  Grants-in-Aid for Scientific Research
  2010 - 2012
  TAKAGI Kentaro; TAKAGI Masahiro; LIANG Naishen; ISHIDA Sachinobu; KAKUBARI Yoshitaka; MIZUNAGA Hiromi; NAKANE Kaneyuki; NAKATSUBO Takayuki
  Soil warming experiment was conducted in 6 Japanese forests to evaluate long-term effectof soil warming on the soil carbon and nitrogen dynamics. Warming experiment was also conducted to Japanese cypress and cryptomeria saplings to evaluate the effect of warming on the growth. Soil warming enhanced heterotrophic respiration at all of 6 forests, but the increase in the dissolved organic carbon and nitrogen content in the soil water was only observed at a cool-temperate mixed forest. Warming decreased CO2 and H2O exchanges of saplings, but did not change the growth rate within 4-month experimental period.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, Principal investigator, Competitive research funding, 22310019
• 東アジアの森林生態系におけるエアロゾルの沈着量と動態の評価
  新学術領域研究(研究領域提案型)
  2008 - 2012
  松田 和秀
  日本学術振興会, Competitive research funding
• Evaluation of deposition amount and dynamics of aerosol in East Asian forest ecosystems
  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
  2008 - 2012
  MATSUDA Kazuhide; SASE Hiroyuki; MURAO Naoto; NOGUCHI Izumi; HAYASHI Kentaro; TAKAHASHI Akira; TAKAGI Kentaro; FUKAZAWA Tatsuya; YAMAGUCHI Takashi
  From the observations of aerosol deposition at forests in East Asia, the knowledge on deposition velocities was obtained. In Japanese remote area, the ratio of sulfate deposition to sulfur dioxide deposition was higher than other areas. The majority of elemental carbon deposition onto tropical forests in Southeast Asia is possibly due to the dry disposition process. On forest leaves, there were more deposited aerosols in the upper part than in the lower part and approximately a half of total aerosol deposition onto forests could deposit.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Meisei University, 20120012
• 東アジア陸域生態系における炭素動態の定量化のための日中韓研究ネットワークの構築
  日中韓フォーサイト事業
  2007 - 2012
  平野 高司
  日本学術振興会, Competitive research funding
• 根系評価もふくめた北方森林流域における炭素および窒素動態と森林変化の影響
  基盤研究(B)
  2009 - 2011
  笹 賀一郎
  日本学術振興会, Competitive research funding
• 土壌呼吸に及ぼす温暖化影響の実験的評価
  地球環境研究総合推進費
  2007 - 2009
  梁 乃申
  環境省, Competitive research funding
• 北方林の水・炭素循環に関する研究
  共同研究
  2001 - 2008
  笹 賀一郎
  国立環境研究所・北海道電力株式会社, Competitive research funding
• 積雪期における森林生態系からの二酸化炭素放出メカニズムの解明
  若手研究(B)
  2006 - 2007
  高木 健太郎
  日本学術振興会, Principal investigator, Competitive research funding
• 開放系二酸化炭素増加処理をした落葉広葉樹の被食防衛物質の局在性の解明
  萌芽研究
  2006 - 2007
  小池 孝良
  日本学術振興会, Competitive research funding
• 極東アジア地域カラマツ林における炭素および物質動態と環境変化影響に関する研究
  基盤研究(A)
  2005 - 2007
  佐藤 冬樹
  日本学術振興会, Competitive research funding
• 大気CO2増加実験に基づく変動環境下での移行帯森林の持続的利用と動態予測
  基盤研究(A)
  2005 - 2007
  小池 孝良
  日本学術振興会, Competitive research funding
• 大規模野外実験による流域スケールでの北方林生態系動態の解明
  基盤研究(A)
  2004 - 2006
  笹 賀一郎
  日本学術振興会, Competitive research funding
• FACE(開放系CO2増加実験)で生育した落葉樹の蒸散速度の解明
  萌芽研究
  2004 - 2005
  小池 孝良
  日本学術振興会, Competitive research funding
• 森林流域における一酸化二窒素・メタンの吸収・放出とそれに及ぼす水文過程の影響
  基盤研究(C)
  2003 - 2005
  杉本 敦子
  日本学術振興会, Competitive research funding
• 不成績造林地に侵入した有用広葉樹の育成と林分CO2固定能の向上に関する研究
  基盤研究(B)
  2002 - 2004
  小池 孝良
  日本学術振興会, Competitive research funding
• 大気と北方森林生態系間におけるCO2交換過程の解明,定量評価,およびモデル化
  基盤研究(B)
  2001 - 2004
  平野 高司
  日本学術振興会, Competitive research funding
• 北方森林圏データベース
  研究成果公開促進費
  2002 - 2003
  高木 健太郎
  日本学術振興会, Principal investigator, Competitive research funding
• 森林・湿原・酪農草地が陸上-湖沼生態系の溶存物質動態に及ぼす影響
  基盤研究(B)
  2001 - 2003
  柴田 英昭
  日本学術振興会, Competitive research funding
• 地域規模の二酸化炭素排出・吸収量評価方法の開発
  地球環境保全試験研究費（地球一括計上）
  2001 - 2003
  藤沼 康実
  環境省, Competitive research funding
• 北方森林生態系における林床植物の二酸化炭素吸収能に関する研究
  若手研究(B)
  2001 - 2002
  高木 健太郎
  日本学術振興会, Principal investigator, Competitive research funding
• 森林樹木・林冠におけるガス交換
  特定領域研究(B)
  1999 - 2001
  小池 孝良
  日本学術振興会, Competitive research funding
• Water and carbon cycles in Northern forests
  Cooperative Research
  2001
  Competitive research funding

• 地球の温暖化と森林土壌からの炭素の放出
  30 Oct. 2017 - 30 Oct. 2017
  Lecturer, Planner, Organizing member
  北海道大学北方生物圏フィールド科学センター天塩研究林
• 森の力・北の森の炭素循環～天塩大規模植林実験の10年～
  19 Nov. 2010
  Lecturer, Planner, Organizing member
  北海道大学北方生物圏フィールド科学センター天塩研究林、国立環境研究所地球環境研究センター、北海道電力株式会社総合研究所
• カラマツ植樹と産官学共同研究の紹介
  28 Oct. 2003 - 29 Oct. 2003
  Lecturer, Planner, Organizing member
  北海道大学北海道大学北方生物圏フィールド科学センター天塩研究林、国立環境研究所地球環境研究センター、北海道電力株式会社総合研究所

• 炭素フラックスの観測・伐採影響
  23 Feb. 2009
  NHK おはよう北海道
  [Media report]
• 天塩研究林の研究紹介
  2009
  雑誌カイ (2009年Winter号)
  [Paper]
• 炭素フラックスの観測
  12 Jun. 2007
  北海道放送 HANAテレビ
  [Media report]
• 産官学共同研究紹介
  15 Mar. 2006
  読売新聞（北海道）
  [Paper]
• 産官学共同研究紹介
  21 May 2004
  朝日新聞（北海道）
  [Paper]
• カラマツ植樹
  Dec. 2003
  幌延町広報誌ほろのべの窓
  [Pr]
• カラマツ植樹
  Dec. 2003
  地球環境研究センターニュース
  [Pr]
• カラマツ植樹
  31 Oct. 2003
  日刊留萌
  [Paper]
• カラマツ植樹
  31 Oct. 2003
  北海道新聞
  [Paper]
• カラマツ植樹
  30 Oct. 2003
  朝日新聞（北海道）
  [Paper]
• 産官学共同研究開始
  08 Nov. 2001
  北海道新聞
  [Paper]
• 産官学共同研究開始
  01 Nov. 2001
  日本経済新聞（茨城）
  [Paper]
• 産官学共同研究開始
  31 Oct. 2001
  日本経済新聞（北海道）
• 産官学共同研究開始
  31 Oct. 2001
  日本工業新聞
  [Paper]
• 産官学共同研究開始
  31 Oct. 2001
  毎日新聞 (北海道)
  [Paper]
• 産官学共同研究開始
  31 Oct. 2001
  読売新聞 (北海道)
  [Paper]