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検索詳細RAM AVTAR (ラム アバタル)
| 地球環境科学研究院 統合環境科学部門 自然環境保全分野 | 准教授 |
I am working as an Associate Professor at the Faculty of Environmental Earth Science, Hokkaido University, Japan and Director of the Global Land Programme (GLP) Japan Nodal Office. I actively contribute to study land systems and co-design solutions for global sustainability as a part of GLP programme. I have worked at United Nations University, Institute for the Advanced Study of Sustainability (UNU-IAS) as a Research Fellow for four years (2012-2016). I hold a master’s degree in Environmental Science from Jawaharlal Nehru University, New Delhi, India and a doctorate in Civil Engineering from the University of Tokyo, Japan. I have developed methods for mapping natural resources using multi-sensor remote sensing techniques and scenario analysis for sustainable management of these resources. Currently, I am working on the synergistic use of remote sensing and Unmanned Aerial Vehicles (UAVs) techniques to monitor the environment more precisely to solve environmental issues from a global to local scale. I am interested in conducting research in the field of applications of Geospatial techniques and machine learning algorithms to monitor terrestrial ecosystems and climate change interface. The ultimate goal of my research is to use transdisciplinary research methods to promote research on vulnerability, resilience and sustainability.
I have worked as a Lead Author in the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) expert group on Deliverable 3(c). I am a recipient of the prestigious Green Talents Award by the Federal Ministry of Education and Research (BMBF), Germany. I have published numerous publications in several international peer-reviewed journal articles (150+), two books of international repute, and presented my work at various international and national conferences. I led various research projects as a Principal Investigator (PI) as well as a team member such as Asia-Pacific Network for Global Change Research (APN-GCR), Grants-in-Aid for Scientific Research (KAKENHI), Belmont Forum, Hirose grant, Kurata grant, Kajima grant etc.
研究者基本情報
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研究活動情報
■ 受賞- 2023年04月, Federal Ministry of Education and Research (BMBF), Germany, Global Young Academy (GYA) Award-2023
- 2023年02月, Hokkaido University, Japan, 北海道大学教育研究総長表彰-2022
- Science-policy integration for ecosystem-based disaster risk reduction: comparative governance frameworks and a pathway for South Asia
Gowhar Meraj; Shizuka Hashimoto; Shruti Kanga; Pankaj Kumar; Suraj Kumar Singh; Haider Mahmood; Ram Avtar
Sustainability Science, 2026年02月17日
研究論文(学術雑誌) - Losing Ground: Flow Fragmentation and Sediment Decline in the Vietnamese Mekong Delta (2000–2023)
Huynh Vuong Thu Minh; Pankaj Kumar; Giap Minh Nhat; Nguyen Thi Hong Diep; Tran Van Ty; Dinh Van Duy; Ram Avtar; Nigel K. Downes
Earth Systems and Environment, 2025年10月24日
研究論文(学術雑誌) - Influence of Land Use/Land Cover Dynamics on Urban Surface Metrics in Semi-Arid Heritage Cities
Saurabh Singh; Ram Avtar; Ankush Kumar Jain; Wafa Saleh Alkhuraiji; Mohamed Zhran
Land, 2025年09月08日
研究論文(学術雑誌) - Simulating the Coastal Protection Performance of Breakwaters in the Mekong Delta: Insights from the Western Coast of Ca Mau Province, Vietnam
Dinh Van Duy; Tran Van Ty; Lam Tan Phat; Huynh Vuong Thu Minh; Nguyen Dinh Giang Nam; Nigel K. Downes; Ram Avtar; Hitoshi Tanaka
Journal of Marine Science and Engineering, 2025年08月14日
研究論文(学術雑誌) - UAS Remote Sensing for Coastal Wetland Vegetation Biomass Estimation: A Destructive vs. Non-Destructive Sampling Experiment
Grayson R. Morgan; Lane Stevenson; Cuizhen Wang; Ram Avtar
Remote Sensing, 2025年07月08日
研究論文(学術雑誌) - Extreme flood significantly altered urban ground deformation patterns: multi-source remote sensing evidence from the 2020 Chongqing flood
Xu Dong; Pinglang Kou; Zhengwu Yuan; Yuxiang Tao; Haoran Yu; Wenli Liang; Ruikun Chen; Ram Avtar; Andrés Alonso-Rodriguez
Hydrological Sciences Journal, 2025年07月04日
研究論文(学術雑誌) - Assessing the efficacy of artificial intelligence based city-scale blue green infrastructure mapping using Google Earth Engine in the Bangkok metropolitan region
Md. Mehedi Hasan; Malay Pramanik; Iftekharul Alam; Atul Kumar; Ram Avtar; Mohamed Zhran
Journal of Urban Management, 2025年06月
研究論文(学術雑誌) - Daily Water Requirements of Vegetation in the Urban Green Spaces in the City of Panaji, India
Manish Ramaiah; Ram Avtar
Water, 2025年05月15日
研究論文(学術雑誌) - Transformative Spatio-Temporal Insights into Indian Summer Days for Advancing Climate Resilience and Regional Adaptation in India
Deepak Kumar Prajapat; Mahender Choudhary; Ram Avtar; Saurabh Singh; Saleh Alsulamy; Ali Kharrazi
Earth, 2025年05月13日
研究論文(学術雑誌) - Rill Erosion and Drainage Development in Post-Landslide Settings Using UAV–LiDAR Data
Xinyu Chen; Albertus Stephanus Louw; Ali P. Yunus; saleh alsulamy; Deha Agus Umarhadi; Md. Alamgir Hossen Bhuiyan; Ram Avtar
Soil Systems, 2025年05月
研究論文(学術雑誌) - Identifying Micro-Level Pollution Hotspots Using Sentinel-5P for the Spatial Analysis of Air Quality Degradation in the National Capital Region, India
Saurabh Singh; Ram Avtar; Ankush Jain; Saleh Alsulamy; Mohamed Mohamed Ouda; Ali Kharrazi
Sustainability, 2025年03月04日
研究論文(学術雑誌) - Integrating Remote Sensing and Machine Learning for Dynamic Monitoring of Eutrophication in River Systems: A Case Study of Barato River, Japan
Dang Guansan; Ram Avtar; Gowhar Meraj; Saleh Alsulamy; Dheeraj Joshi; Laxmi Narayan Gupta; Malay Pramanik; Pankaj Kumar
Water, 2025年01月01日
研究論文(学術雑誌) - Methodology for measuring landfill dumping statistics globally using Digital Elevation Change maps
Albertus Stephanus Louw; Ram Avtar
Resources, Conservation and Recycling, 2025年01月
研究論文(学術雑誌) - Enhanced Retrieval of Forest Biomass Using L-Band SAR and Spaceborne LiDAR Data
Rajat; Mohamed Musthafa; Ram Avtar
2024 IEEE India Geoscience and Remote Sensing Symposium (InGARSS), 1, 4, IEEE, 2024年12月02日
研究論文(国際会議プロシーディングス) - Development of L-band fully polarimetric SAR algorithm for forest biomass retrieval using 7SD and random forest regression
Rajat; Priyanka; Mohamed Musthafa; Praveen Kumar; Saleh Alsulamy; Khaled Khedher; Ram Avtar
Physics and Chemistry of the Earth, Parts A/B/C, 2024年12月
研究論文(学術雑誌) - Development of Four Component Scattering Power Decomposition Technique for Dual Polarization SAR Data
Rajat; Ram Avtar
Journal of the Indian Society of Remote Sensing, 2024年12月
研究論文(学術雑誌) - Mapping of Temporally Dynamic Tropical Forest and Plantations Canopy Height in Borneo Utilizing TanDEM-X InSAR and Multi-sensor Remote Sensing Data
Stanley Anak Suab; Hitesh Supe; Albertus Stephanus Louw; Ram Avtar; Alexius Korom; Chen Xinyu
Journal of the Indian Society of Remote Sensing, 2024年12月
研究論文(学術雑誌) - Evaluating heat health risk in Indian cities: Geospatial and socio-ecological analysis
Kaushik Mandvikar; Nirmal Kumar; Hitesh Supe; Deepak Singh; Ankita Gupta; Pankaj Kumar; Gowhar Meraj; Inam Danish Khan; Asma Kouser; Santosh Kumar Pandey; Ram Avtar
World Development Sustainability, 5, 2024年12月
研究論文(学術雑誌) - Quantification of ecosystem benefits of community plantation and its impacts on human well-being
Pankaj Kumar; Tomoki Yagasaki; Gowhar Meraj; Shamik Chakraborty; Rajarshi Dasgupta; Amit Chatterjee; Huynh Vuong Thu Minh; Binaya Kumar Mishra; Ram Avtar; Osamu Saito; Kazuhiko Takeuchi
Urban Water Ecosystems in Africa and Asia, 183, 199, Routledge, 2024年11月04日
論文集(書籍)内論文 - Tree Species Classification by Multi-Season Collected UAV Imagery in a Mixed Cool-Temperate Mountain Forest
Ram Avtar; Xinyu Chen; Jinjin Fu; Saleh Alsulamy; Hitesh Supe; Yunus Ali Pulpadan; Albertus Stephanus Louw; Nakaji Tatsuro
Remote Sensing, 16, 21, 4060, 4060, MDPI AG, 2024年10月31日
研究論文(学術雑誌), Effective forest management necessitates spatially explicit information about tree species composition. This information supports the safeguarding of native species, sustainable timber harvesting practices, precise mapping of wildlife habitats, and identification of invasive species. Tree species identification and geo-location by machine learning classification of UAV aerial imagery offer an alternative to tedious ground surveys. However, the timing (season) of the aerial surveys, input variables considered for classification, and the model type affect the classification accuracy. This work evaluates how the seasons and input variables considered in the species classification model affect the accuracy of species classification in a temperate broadleaf and mixed forest. Among the considered models, a Random Forest (RF) classifier demonstrated the highest performance, attaining an overall accuracy of 83.98% and a kappa coefficient of 0.80. Simultaneously using input data from summer, winter, autumn, and spring seasons improved tree species classification accuracy by 14–18% from classifications made using only single-season input data. Models that included vegetation indices, image texture, and elevation data obtained the highest accuracy. These results strengthen the case for using multi-seasonal data for species classification in temperate broadleaf and mixed forests since seasonal differences in the characteristics of species (e.g., leaf color, canopy structure) improve the ability to discern species. - Assessing the accuracy of an infrared-converted drone camera with Orange-Cyan-NIR filter for vegetation and environmental monitoring
Albertus S. Louw; Xinyu Chen; Ram Avtar
Remote Sensing Applications: Society and Environment, 2024年08月
研究論文(学術雑誌) - Retrieval of Forest Biomass Using PolSAR Decomposition and PolInSAR Techniques
Rajat; Priyanka; Mohamed Musthafa; Ram Avtar
IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium, 10760, 10763, IEEE, 2024年07月07日
研究論文(国際会議プロシーディングス) - Forest Biomass Estimation Using S-Band SAR and Lidar Data
Priyanka; Rajat; Mohamed Musthafa; Ram Avtar; Gulab Singh
IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium, 4495, 4498, IEEE, 2024年07月07日
研究論文(国際会議プロシーディングス) - MaxEnt-Based Potential Distribution Mapping and Range Shift under Future Climatic Scenarios for an Alpine Bamboo Thamnocalamus spathiflorus in Northwestern Himalayas
Rajendra K. Meena; Maneesh S. Bhandari; Pawan Kumar Thakur; Nitika Negi; Shailesh Pandey; Rama Kant; Rajesh Sharma; Netrananda Sahu; Ram Avtar
Land, 2024年06月26日
研究論文(学術雑誌) - Assessment of the solar energy–agriculture–water nexus in the expanding solar energy industry of India: An initiative for sustainable resource management
Hitesh Supe; Abhishek Abhishek; Ram Avtar
Heliyon, 2024年01月
研究論文(学術雑誌) - Climate-driven runoff variability in semi-mountainous reservoirs of the Vietnamese Mekong Delta: Insights for sustainable water management
Huynh Vuong Thu Minh; Pankaj Kumar; Gowhar Meraj; Lam Van Thinh; Nigel K. Downes; Tran Van Ty; Nguyen Dinh Giang Nam; Fei Zhang; Bin Liu; Le Thien Hung; Dinh Van Duy; Tran Thi Truc Ly; Nguyen Quoc Luat; Ram Avtar; Mansour Almazroui
Irrigation and Drainage, 2024年
研究論文(学術雑誌) - Multi-scale characteristics of drought propagation from meteorological to hydrological phases: variability and impact in the Upper Mekong Delta, Vietnam
H. V.T. Minh; P. Kumar; N. K. Downes; N. V. Toan; G. Meraj; P. C. Nguyen; K. N. Le; T. V. Ty; K. Lavane; R. Avtar; M. Almazroui
Natural Hazards, 2024年
研究論文(学術雑誌) - Assessing determinants, challenges and perceptions to adopting water-saving technologies among agricultural households in semi-arid states of India
Geetha Mohan; Lakshmi Narayana Perarapu; Saroj Kumar Chapagain; A. Amarender Reddy; Indrek Melts; Ranjeeta Mishra; Ram Avtar; Kensuke Fukushi
Current Research in Environmental Sustainability, 7, 2024年01月
研究論文(学術雑誌) - Assessment and Mapping of Riverine Flood Susceptibility (RFS) in India through Coupled Multicriteria Decision Making Models and Geospatial Techniques
Ravi Kumar; Manish Kumar; Akash Tiwari; Syed Irtiza Majid; Sourav Bhadwal; Netrananda Sahu; Ram Avtar
Water, 2023年11月09日
研究論文(学術雑誌) - A review of remote sensing image spatiotemporal fusion: Challenges, applications and recent trends
Juan Xiao; Ashwani Kumar Aggarwal; Nguyen Hong Duc; Abhinandan Arya; Uday Kiran Rage; Ram Avtar
Remote Sensing Applications: Society and Environment, 32, 2023年11月
研究論文(学術雑誌) - Interactions of urbanisation, climate variability, and infectious disease dynamics: insights from the Coimbatore district of Tamil Nadu
Sudha Suresh; Gowhar Meraj; Pankaj Kumar; Deepak Singh; Inam Danish Khan; Ankita Gupta; Tarun Kumar Yadav; Asma Kouser; Ram Avtar
Environmental Monitoring and Assessment, 195, 10, 2023年10月
研究論文(学術雑誌) - Integrated Spatial Analysis of Forest Fire Susceptibility in the Indian Western Himalayas (IWH) Using Remote Sensing and GIS-Based Fuzzy AHP Approach
Pragya; Manish Kumar; Akash Tiwari; Syed Irtiza Majid; Sourav Bhadwal; Netrananda Sahu; Naresh Kumar Verma; Dinesh Kumar Tripathi; Ram Avtar
Remote Sensing, 2023年09月25日
研究論文(学術雑誌) - Disease Dynamics in a Changing Climate: Impact of Urbanization and Temperature Variability on Infectious Diseases in Coimbatore
Sudha Suresh; Gowhar Meraj; Pankaj Kumar; Deepak Singh; Inam Danish Khan; Ankita Gupta; Tarun Yadav; Asma Kouser; Ram Avtar
Research Square Platform LLC, 2023年06月28日
Abstract
Climate change, which encompasses variations in rainfall and temperature patterns, coupled with changes in land use/land cover (LULC), significantly impacts both the environment and society. These two factors, climate change and LULC shifts, have markedly affected human health, both directly and indirectly. Monitoring regional climate patterns, LULC changes, and disease outbreaks is crucial to ensure healthy living standards through a sustainable environment. This study investigates the correlation between climate change, LULC change, and the prevalence of infectious diseases transmitted by vectors and waterborne pathogens in Coimbatore district, Tamil Nadu, India, from 1985 to 2015. The study used Landsat-4, Landsat-5 and Landsat-8 data to generate LULC maps of the study area. The maximum likelihood algorithm facilitated the creation of these maps and detected changes for the years 1985, 2000, 2009, and 2015. Rainfall and temperature data for the study area were sourced from APHRODITE's Water Resources, and statistical analysis was applied to analyse these time series data. Infectious disease data was obtained from the Indian Council of Medical Research (ICMR), the Integrated Disease Surveillance Programme (IDSP), the National Vector Borne Disease Control Programme (NVBDCP), and the National Health System Resource Centre. These data were examined to identify trends in the occurrence of infectious diseases. The key findings of the study include (1) an overall increase in temperature and minor variations in rainfall in the study area during the study period; (2) an evident increase in built-up areas, as depicted by the LULC maps, attributable to industrialisation and population growth; (3) an emergence of dengue during the study period. The increasing patterns of vector-borne and water-borne diseases could be associated with changes in LULC and climate change. Given that the relationship between infectious diseases and their links to climate change and LULC changes has not been extensively researched in the Indian context, this study intends to contribute to a deeper understanding and delineation of future strategies in Coimbatore, India. - Enhancing assessment of corn growth performance using unmanned aerial vehicles (UAVs) and deep learning
Juan Xiao; Stanley Anak Suab; Xinyu Chen; Chander Kumar Singh; Dharmendra Singh; Ashwani Kumar Aggarwal; Alexius Korom; Wirastuti Widyatmanti; Tanjinul Hoque Mollah; Huynh Vuong Thu Minh; Khaled Mohamed Khedher; Ram Avtar
Measurement: Journal of the International Measurement Confederation, 214, 2023年06月15日
研究論文(学術雑誌) - Brief Communication: An Ice-Debris Avalanche in the Nupchu Valley, Kanchenjunga Conservation Area, Eastern Nepal
Alton C. Byers; Marcelo Somos-Valenzuela; Dan H. Shugar; Daniel McGrath; Mohan B. Chand; Ram Avtar
Copernicus GmbH, 2023年05月24日
Abstract. Beginning in December 2020, a series of small-to-medium, torrent-like pulses commenced upon a historic debris cone located within the Nupchu valley, Kanchenjunga Conservation Area (KCA), Nepal. Sometime between 16 and 21 August 2022 a comparatively large ice-debris avalanche event occurred, covering an area of 0.6 km2 with a total estimated volume of order 106 m3. Changing cryospheric conditions throughout the region suggest that the installation of preventative floodwater diversion mechanisms for vulnerable villages is warranted, improved reporting mechanisms to authorities, and early warning systems. More systematic monitoring via remote sensing platforms and hazard mapping by scientists is also indicated. - Earthquake-induced soil landslides: volume estimates and uncertainties with the existing scaling exponents
Ali P. Yunus; Xinyu Chen; Filippo Catani; Srikrishnan Siva Subramaniam; Xuanmei Fan; Dou Jie; K. S. Sajinkumar; Ankita Gupta; Ram Avtar
SCIENTIFIC REPORTS, 13, 1, 2023年05月
英語, 研究論文(学術雑誌) - 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, 2023年05月
研究論文(学術雑誌) - Using interferometric synthetic aperture rader (InSAR) analysis to detect ground deformation related to irreversibly changing ground ice, Mongolia
Mamoru Ishikawa; Ram Avtar; Shixin Mo
Land Degradation & Development, 34, 9, 2707, 2719, Wiley, 2023年04月05日
研究論文(学術雑誌), Abstract
Permafrost in Mongolia shows highly heterogeneous features in space and the contents of ground ice are dependent on the local geographies such as topography, ground wetness, and vegetation cover. Recent permafrost degradation would cause thawing and disappearance of ground ice, destabilizing and subsiding the ground surface. This study aimed to detect topographic deformation related to irreversibly changing ground ice over the permafrost terrain of Mongolia. To end this we used interferometric synthetic aperture RADAR (InSAR) technique, which is capable to measure vertical ground deformation on a centimeter scale. Advanced land observing satellite‐based phased array type L‐band synthetic aperture radar (PALSAR) images (June to September 2007 to 2010) and PALSAR‐2 images (June to September 2014 to 2017) quantified near‐year‐round displacement of the ground surface. The overall deformation was in a range of −3 to 3 cm (subsidence and uplift, respectively) between the image interval and relatively high subsidence occurred during warm years. The areas experiencing consecutive uplift and subsidence correspond to ground underlain by ice‐rich soils, indicating the dominant roles of thawing and growing ground ice for local deformation over permafrost terrain. We discuss the relation of observed ground deformation trends with regional climate and local geohydrology that influence ground ice formation. - Are Countries Ready for REDD+ Payments? REDD+ Readiness in Bhutan, India, Myanmar, and Nepal
Nabin Bhattarai; Bhaskar Singh Karky; Ram Avtar; Rajesh Bahadur Thapa; Teiji Watanabe
Sustainability, 15, 7, 6078, 6078, MDPI AG, 2023年03月31日
研究論文(学術雑誌), The Paris Agreement recognized the significant role of forests in climate change mitigating and adapting. It also emphasized the importance of the Reducing Emissions from Deforestation and forest Degradation (REDD+) mechanism as a vital tool for achieving the goal of limiting global warming to 1.5 °C above pre-industrial levels. This study aims to assess the REDD+ readiness of Bhutan, India, Myanmar, and Nepal in preparation for effectively implementing REDD+ at the national level. A total of 57 indicators across five categories were used to evaluate readiness: overall readiness, technical readiness, institutional readiness, financing readiness, and strategy and safeguard readiness. The indicator-based questionnaire was administered to government officials, NGOs, private sectors, and academics. The results showed that Nepal was slightly more advanced in overall readiness, owing in part to the longer readiness period of the World Bank-supported Terai Arc ER-P. India scored highly in technical readiness and has several sub-national programmes for REDD+ implementation. Bhutan had strong ratings for strategy and safeguard readiness but lower scores for institutional and financing readiness. Myanmar had consistent ratings across readiness areas, but a lower score for technical readiness. However, political and governance situations pose significant challenges to the effective implementation of REDD+ in Myanmar. - Uncrewed Aerial Systems in Water Resource Management and Monitoring: A Review of Sensors, Applications, Software, and Issues
Vishal Mishra; Ram Avtar; A. P. Prathiba; Prabuddh Kumar Mishra; Anuj Tiwari; Surendra Kumar Sharma; Chandra Has Singh; Bankim Chandra Yadav; Kamal Jain
Advances in Civil Engineering, 2023, 2023年02月06日
研究論文(学術雑誌) - Heavy Metal Exposures on Freshwater Snail Pomacea insularum: Understanding Its Biomonitoring Potentials
Chee Kong Yap; Bin Huan Pang; Wan Hee Cheng; Krishnan Kumar; Ram Avtar; Hideo Okamura; Yoshifumi Horie; Moslem Sharifinia; Mehrzad Keshavarzifard; Meng Chuan Ong; Abolfazl Naji; Mohamad Saupi Ismail; Wen Siang Tan
Applied Sciences, 13, 2, 1042, 1042, MDPI AG, 2023年01月12日
研究論文(学術雑誌), The present investigation focused on the toxicity test of cadmium (Cd), copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn), utilizing two groups of juvenile and adult apple snail Pomacea insularum (Gastropod, Thiaridae) with mortality as the endpoint. For the adult snails, the median lethal concentrations (LC50) values based on 48 and 72 h decreased in the following order: Cu < Ni < Pb < Cd < Zn. For the juvenile snails, the LC50 values based on 48 and 72 h decreased in the following order: Cu < Cd < Ni < Pb < Zn. The mussel was more susceptible to Cu than the other four metal exposures, although the juveniles were more sensitive than the adults because the former had lower LC50 values than the latter. This study provided essential baseline information for the five metal toxicities using P. insularum as a test organism, allowing comparisons of the acute sensitivity in this species to the five metals. In conclusion, the present study demonstrated that P. insularum was a sensitive biomonitor and model organism to assess heavy metal risk factors for severe heavy metal toxicities. A comparison of the LC50 values of these metals for this species with those for other freshwater gastropods revealed that P. insularum was equally sensitive to metals. Therefore, P. insularum can be recommended as a good biomonitor for the five metals in freshwater ecosystems. - Spatial integration framework of solar, wind, and hydropower energy potential in Southeast Asia
Anjar Dimara Sakti; Pitri Rohayani; Nurusshobah Ainul Izzah; Nur Afrizal Toya; Pradita Octoviandiningrum Hadi; Thanti Octavianti; Wendi Harjupa; Rezzy Eko Caraka; Yunho Kim; Ram Avtar; Nattapong Puttanapong; Chao-Hung Lin; Ketut Wikantika
Scientific Reports, 13, 1, Springer Science and Business Media LLC, 2023年01月07日
研究論文(学術雑誌), Abstract
Amid its massive increase in energy demand, Southeast Asia has pledged to increase its use of renewable energy by up to 23% by 2025. Geospatial technology approaches that integrate statistical data, spatial models, earth observation satellite data, and climate modeling can be used to conduct strategic analyses for understanding the potential and efficiency of renewable energy development. This study aims to create the first spatial model of its kind in Southeast Asia to develop multi-renewable energy from solar, wind, and hydropower, further broken down into residential and agricultural areas. The novelty of this study is the development of a new priority model for renewable energy development resulting from the integration of area suitability analysis and the estimation of the amount of potential energy. Areas with high potential power estimations for the combination of the three types of energy are mostly located in northern Southeast Asia. Areas close to the equator, have a lower potential than the northern countries, except for southern regions. Solar photovoltaic (PV) plant construction is the most area-intensive type of energy generation among the considered energy sources, requiring 143,901,600 ha (61.71%), followed by wind (39,618,300 ha; 16.98%); a combination of solar PV and wind (37,302,500 ha; 16%); hydro (7,665,200 ha; 3.28%); a combination of hydro and solar PV (3,792,500 ha; 1.62%); and a combination of hydro and wind (582,700 ha; 0.25%). This study is timely and important because it will inform policies and regional strategies for transitioning to renewable energy, with consideration of the different characteristics present in Southeast Asia. - Forest plantation species classification using Full-Pol-Time-Averaged SAR scattering powers
Priyanka; Rajat; Ram Avtar; Rashmi Malik; M. Musthafa; Virendra S. Rathore; Praveen Kumar; Gulab Singh
Remote Sensing Applications: Society and Environment, 29, 100924, 100924, Elsevier BV, 2023年01月
研究論文(学術雑誌) - Deep Learning-Based Spatiotemporal Fusion of Unmanned Aerial Vehicle and Satellite Reflectance Images for Crop Monitoring
Juan Xiao; Ashwani Kumar Aggarwal; Uday Kiran Rage; Vaibhav Katiyar; Ram Avtar
IEEE Access, 2023年
研究論文(学術雑誌) - Strategic Slum Upgrading and Redevelopment Action Plan for Jammu City
MAJID FAROOQ; Dr. Fayma Mushtaq; Gowhar Meraj; Suraj Kumar Singh; SHRUTI KANGA; Ankita Gupta; Pankaj Kumar; Deepak Singh; Ram Avtar
Resources, 11, 12, 2022年12月
研究論文(学術雑誌) - Quantifying spatio-temporal variation in aquaculture production areas in Satkhira, Bangladesh using geospatial and social survey
Hafeza Nujaira; Kumar Arun Prasad; Pankaj Kumar; Ali P. Yunus; Ali Kharrazi; L. N. Gupta; Tonni Agustiono Kurniawan; Haroon Sajjad; Ram Avtar
PLoS ONE, 17, 12 December, 2022年12月
研究論文(学術雑誌) - Post-typhoon forest damage estimation using multiple vegetation indices and machine learning models
Xinyu Chen; Ram Avtar; Deha Agus Umarhadi; Albertus Stephanus Louw; Sourabh Shrivastava; Ali P. Yunus; Khaled Mohamed Khedher; Tetsuya Takemi; Hideaki Shibata
Weather and Climate Extremes, 38, 100494, 100494, Elsevier BV, 2022年12月
研究論文(学術雑誌) - Understanding Dry and Wet Conditions in the Vietnamese Mekong Delta Using Multiple Drought Indices: A Case Study in Ca Mau Province
Huynh Vuong Thu Minh; Pankaj Kumar; Tran Van Ty; Dinh Van Duy; Tran Gia Han; Kim Lavane; Ram Avtar
Hydrology, 2022年11月28日
研究論文(学術雑誌) - Water Resource Management through the Lens of Planetary Health Approach
Pankaj Kumar; Ram Avtar
Water, 14, 21, 3490, 3490, MDPI AG, 2022年11月
研究論文(学術雑誌), For eternity, water resources have proven to be the key to inclusive social development and human well-being [...] - Treated Wastewater Use for Maintenance of Urban Green Spaces for Enhancing Regulatory Ecosystem Services and Securing Groundwater
Manish Ramaiah; Ram Avtar; Pankaj Kumar
Hydrology, 2022年10月17日
研究論文(学術雑誌) - Impacts of dike systems on hydrological regime in Vietnamese Mekong Delta
Nguyen Van Xuan; Nguyen Ngoc Long Giang; Tran Van Ty; Pankaj Kumar; Nigel K. Downes; Nguyen Dinh Giang Nam; Nguyen Vo Chau Ngan; Lam Van Thinh; Dinh Van Duy; Ram Avtar; Huynh Vuong Thu Minh
Water Supply, 22, 11, 7945, 7959, IWA Publishing, 2022年10月12日
研究論文(学術雑誌) - Implications of climate change and drought on water requirements in a semi-mountainous region of the Vietnamese Mekong Delta
Huynh Vuong Thu Minh; Tran Van Ty; Ram Avtar; Pankaj Kumar; Kieu Ngoc Le; Nguyen Vo Chau Ngan; Luong Huy Khanh; Nguyen Cong Nguyen; Nigel K. Downes
Environmental Monitoring and Assessment, 194, S2, Springer Science and Business Media LLC, 2022年09月
研究論文(学術雑誌) - Imminent threat of rock-ice avalanches in High Mountain Asia
Xuanmei Fan; Ali P. Yunus; Ying-Hui Yang; Srikrishnan Siva Subramanian; Chengbin Zou; Lanxin Dai; Xiangyang Dou; Allu Chinna Narayana; Ram Avtar; Qiang Xu; Runqui Huang
Science of The Total Environment, 836, 155380, 155380, Elsevier BV, 2022年08月
研究論文(学術雑誌) - The role of remote sensing during a global disaster: COVID-19 pandemic as case study
Albertus S. Louw; Jinjin Fu; Aniket Raut; Azim Zulhilmi; Shuyu Yao; Miki McAlinn; Akari Fujikawa; Muhammad Taimur Siddique; Xiaoxiao Wang; Xinyue Yu; Kaushik Mandvikar; Ram Avtar
Remote Sensing Applications: Society and Environment, 27, 2022年08月 - Land Use Change and Prediction for Valuating Carbon Sequestration in Viti Levu Island, Fiji
Ram Avtar; Apisai Vakacegu Rinamalo; Deha Agus Umarhadi; Ankita Gupta; Khaled Khedher; Ali P Yunus; Bhupendra P. Singh; Pankaj Kumar; Dr. Netrananda Sahu; Anjar Dimara Sakti
Land, 11, 8, 2022年08月
研究論文(学術雑誌) - Forest Fire in the Hindu Kush Himalayas: A Major Challenge for Climate Action
Nabin Bhattarai; Sishir Dahal; Sunil Thapa; Saurav Pradhananga; Bhaskar Singh Karky; Ranjeet Sing Rawat; Kai Windhorst; Teiji Watanabe; Rajesh Bahadur Thapa; Ram Avtar
Journal of Forest and Livelihood, 21, 1, 14, 31, Nepal Journals Online (JOL), 2022年06月01日
研究論文(学術雑誌), Forest fire has been one of the compelling issues in the Hindu Kush Himalayan (HKH) region. To promote regeneration, clearing fields for agriculture, hunting, and security reasons, local people deliberately set forests on fire. In this paper, active fire incidents, temperature, precipitation, and the changes of Aerosol Optical Depth (AOD) and Carbon monoxide (CO) value associated with forest fire were evaluated. The active forest fire incidents obtained from the Moderate Resolution Imaging Spectroradiometer (MODIS) satellite are supplemented by the ERA5-land dataset to see the relation between precipitation and temperature with forest fires. MODIS and Tropospheric Monitoring Instrument (TROPOMI) sensor datasets were used to see the changes in AOD and CO in the region. MODIS sensor detected more than 30,462 active fires incidents in March and April 2021 in the study areas. Shan State of Myanmar recorded the maximum number of active fire incidents which is due to the practice of shifting cultivation and minimum in Bhutan due to the awareness campaigns and technology improvement. The temperature recorded in the study sites shows an increasing trend as compared to the reference period (2010-2020). Apart from Shan and Bago of Myanmar, precipitation in the study sites is also less during the study period. AOD and CO values show prominent peaks in a fire season which coincide with days of the maximum number of fire counts inferring the influence of forest fire on air quality. Developing countries like Nepal, India, Myanmar, and Bhutan are willing to take part in climate finance and are bound to accept expensive insurance premium due to forest fire incidents. Unless forest fires are effectively managed and mitigated, achieving Nationally Determined Contributions (NDCs) and global agendas, including United Nations Decade of Ecosystem Restoration is onerous. - Modelling Arctic coastal plain lake depths using machine learning and Google Earth Engine
Hao Chen; Ali P. Yunus; Sravanthi Nukapothula; Ram Avtar
Physics and Chemistry of the Earth, 126, 2022年06月
研究論文(学術雑誌) - Ecological–Health Risk Assessments of Copper in the Sediments: A Review and Synthesis
Prof. Dr. Chee Kong Yap; Muhammad Saleem; Wen Siang Tan; Wan Mohd Syazwan; Noor Azrizal-Wahid; Rosimah Nulit; Mohd. Hafiz Ibrahim; Muskhazli Mustafa; Mohd Amiruddin Abd Rahman; Franklin Berandah Edward; Takaomi Arai; Wan Hee Cheng; Hideo Okamura; Mohamad Saupi Ismail; Krishnan Kumar; Ram Avtar; Khalid Al-Mutairi; Al-Shami S. A.; Geetha Subramaniam; Ling Shing Wong
Pollutants, 2, 3, 269, 288, MDPI AG, 2022年06月
研究論文(学術雑誌), The ecological and children’s Health Risk Assessments (HRA) of Copper (Cu) in aquatic bodies ranging from rivers, mangrove, estuaries, and offshore areas were studied using the Cited Cu Data in The Sediments (CCDITS) from 125 randomly selected papers published from 1980 to 2022. The ecological and children’s HRA were assessed in all CCDITS. Generally, local point Cu sources (8%) and lithogenic sources were the main controlling factors of Cu concentrations. The present review revealed three interesting points. First, there were 11 papers (8%) documenting Cu levels of more than 500 mg/kg dw while China was the country with the highest number (26%) of papers published between 1980 and 2022, out of 37 countries. Second, with the Cu data cited from the literature not normally distributed, the maximum Cu level was higher than all the established guidelines. However, the median Cu concentration was lower than most of the established guidelines. The median values of the geoaccumulation index (Igeo) indicated a status of ‘unpolluted‘ and ‘moderate contamination’ for the contamination factor (CF), and ‘low potential ecological risk’ for the ecological risk (ER) of Cu. However, the Cu ER could be based at present on the above mentioned 8% of the literature in the present study. Third, the calculated hazard index (HI) values were found to be below 1, indicating no potential chance of Cu non–carcinogenic effects in both adults and children, except for children’s HI values from Lake Pamvotis of Greece, and Victoria Harbor in Hong Kong. Thus, regular monitoring (every 2 years), depending upon the available resources, is recommended to assess the ecological–health risk of Cu pollution in aquatic bodies to abate the risk of Cu exposure to children’s health and avoid injurious impacts on the biota. It can be concluded that there is always a need for the mitigation and management of a Cu exposure risk assessment that can be used successfully for screening purposes to detect important human health exposure routes. Consequently, any sediments contaminated with Cu require rapid sediment remediation techniques. - Towards evaluating gully erosion volume and erosion rates in the Chambal badlands, Central India
Raveena Raj; Ali P. Yunus; Padmini Pani; Ram Avtar
Land Degradation & Development, 33, 9, 1495, 1510, Wiley, 2022年05月30日
研究論文(学術雑誌) - Hydrochemical indices as a proxy for assessing land-use impacts on water resources: A sustainable management perspective and case study of Can Tho City, Vietnam
Nguyen Hong Duc; Pankaj Kumar; Pham Phuong Lan; Tonni Agustiono Kurniawan; Khaled Mohamed Khedher; Ali Kharrazi; Osamu Saito; Ram Avtar
Natural Hazards, 117, 3, 2573, 2615, 2022年05月26日
研究論文(学術雑誌) - Treatment of whitewater from pulp and paper industry using membrane filtrations
Tonni Agustiono Kurniawan; Mohd Hafiz Dzarfan Othman; Mohd Ridhwan Adam; Hui Hwang Goh; Ayesha Mohyudin; Ram Avtar; Tutuk Djoko Kusworo
Chemical Papers, 76, 8, 5001, 5010, Springer Science and Business Media LLC, 2022年04月30日
研究論文(学術雑誌) - Tropical peat subsidence rates are related to decadal LULC changes: Insights from InSAR analysis
Deha Agus Umarhadi; Wirastuti Widyatmanti; Pankaj Kumar; Ali P. Yunus; Khaled Mohamed Khedher; Ali Kharrazi; Ram Avtar
SCIENCE OF THE TOTAL ENVIRONMENT, 816, 2022年04月
英語, 研究論文(学術雑誌) - Assessing the Impacts of Dike Systems on Water Quality in Natural Reserves of the Vietnamese Mekong Delta
Bui Thi Bich Lien; Nguyen Thi Thanh Ngan; Pankaj Kumar; Trinh Trung Tri Dang; Tran Thi Kim Hong; Tran Van Ty; Ram Avtar; Huynh Vuong Thu Minh
Urban Science, 6, 1, 21, 21, {MDPI} {AG}, 2022年03月09日
研究論文(学術雑誌) - Unraveling Intricacies of Monsoon Attributes in Homogenous Monsoon Regions of India
Atul Saini; Netrananda Sahu; Weili Duan; Manish Kumar; Ram Avtar; Manoranjan Mishra; Pankaj Kumar; Rajiv Pandey; Swadhin Behera
Frontiers in Earth Science, 10, Frontiers Media SA, 2022年03月04日
研究論文(学術雑誌), India observes the summer monsoon in June–July–August–September (JJAS) season, and the livelihood security of a huge population depends on it. The impact of the monsoon onset timing, length of monsoon season, rainfall amount, and related extreme events is huge on the Indian economy. Therefore, understanding the inherent intricacies needed a detailed investigation. In five homogenous monsoon regions of India, the trend of monsoon onset and the length of monsoon season are examined. The association between 1) monsoon onset ∼ rainfall amount, 2) length of monsoon season ∼ rainfall amount, and 3) monsoon onset ∼ length of monsoon season is investigated. Subsequently, the behavior of rainfall and extreme excess days in the ±1 standard deviation (SD) length of monsoon season is also examined in detail. The trend for monsoon onset shows late onset in all the homogenous monsoon regions except the northeast region. The length of monsoon season is found increasing significantly with high magnitude in west central and northwest regions. A significantly strong negative correlation (∼−0.6) for monsoon onset timing ∼ length of monsoon season is observed. Therefore, the change in rainfall anomaly, extreme excess days, and rainy days is done concerning the length of the monsoon season. In the cases of the −1 SD (+1 SD) length of monsoon season, rainfall anomaly and extreme excess days are low (high) in most parts of the homogenous monsoon regions. Extreme excess days showed a significant association with rainy days, which indicates a high possibility of rainy days converting into extreme excess days. However, the increase in extreme excess days in the +1 SD length of monsoon season is limited to a great extent in JJAS and June only. Morlet wavelet power spectrum shows the delay (advance) of power in −1SD (+1 SD) length of monsoon season. - Analysing the relationship between drought and soil erosion using vegetation health index and RUSLE models in Godavari middle sub-basin, India
Md Masroor; Haroon Sajjad; Sufia Rehman; Roshani Singh; Md Hibjur Rahaman; Mehebub Sahana; Raihan Ahmed; Ram Avtar
Geoscience Frontiers, 13, 2, 101312, 101312, Elsevier BV, 2022年03月
研究論文(学術雑誌) - Transformation of Solid Waste Management in China: Moving towards Sustainability through Digitalization-Based Circular Economy
Tonni Agustiono Kurniawan; Xue Liang; Elizabeth O’Callaghan; Huihwang Goh; Mohd Hafiz Dzarfan Othman; Ram Avtar; Tutuk Djoko Kusworo
Sustainability, 14, 4, 2022年02月18日
研究論文(学術雑誌) - Migrating rivers, consequent paleochannels: The unlikely partners and hotspots of flooding
K.S. Sajinkumar; A. Arya; A. Rajaneesh; T. Oommen; Ali P. Yunus; V.R. Rani; Ram Avtar; K.P. Thrivikramji
Science of The Total Environment, 807, 150842, 150842, Elsevier BV, 2022年02月
研究論文(学術雑誌) - Technological solutions for long-term storage of partially used nuclear waste: A critical review
Tonni Agustiono Kurniawan; Mohd Hafiz Dzarfan Othman; Deepak Singh; Ram Avtar; Goh Hui Hwang; Tjandra Setiadi; Wai hung Lo
Annals of Nuclear Energy, 166, 2022年02月 - Integrated Climate Action Planning (ICLAP) in Asia-Pacific Cities: Analytical Modelling for Collaborative Decision Making
Mahendra Sethi; Li-Jing Liu; Eva Ayaragarnchanakul; Aki Suwa; Ram Avtar; Akhilesh Surjan; Shilpi Mittal
Atmosphere, 13, 2, 247, 247, {MDPI} {AG}, 2022年01月31日
研究論文(学術雑誌) - Assessing the Influence of Land Use/Land Cover Alteration on Climate Variability: An Analysis in the Aurangabad District of Maharashtra State, India
Md Masroor; Ram Avtar; Haroon Sajjad; Pandurang Choudhari; Luc Cimusa Kulimushi; Khaled Mohamed Khedher; Akinola Adesuji Komolafe; Ali P. Yunus; Netrananda Sahu
Sustainability, 14, 2, 2022年01月07日
研究論文(学術雑誌) - A Spatiotemporal Image Fusion Method for Predicting High-Resolution Satellite Images
Vipul Chhabra; R. Uday Kiran; Juan Xiao; P. Krishna Reddy; Ram Avtar
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 13343 LNAI, 470, 481, Springer International Publishing, 2022年 - Spatio-temporal variations in the water quality of the Doorndraai Dam, South Africa: An assessment of sustainable water resource management
Mmasabata Dolly Molekoa; Pankaj Kumar; Bal Krishan Choudhary; Ali P. Yunus; Ali Kharrazi; Khaled Mohamed Khedher; Mohammad Al Shaib; Bhupendra P. Singh; Huynh Vuong Thu Minh; Tonni Agustiono Kurniawan; Ram Avtar
Current Research in Environmental Sustainability, 4, 2022年01月
研究論文(学術雑誌) - Monitoring tropical peatlands subsidence by time-series interferometric synthetic aperture radar (InSAR) technique
Deha Agus Umarhadi; Ram Avtar; Pankaj Kumar; Ali P. Yunus; Tonni Agustiono Kurniawan; Ali Kharrazi; Mamoru Ishikawa; Wirastuti Widyatmanti
Radar Remote Sensing: Applications and Challenges, 341, 356, 2022年01月01日
論文集(書籍)内論文 - A Model-Based Approach for Improving Surface Water Quality Management in Aquaculture using MIKE 11: A Case of the Long Xuyen Quadangle, Mekong Delta, Vietnam
Huynh Vuong Thu Minh; Van Pham Dang Tri; Ut Vu Ngoc; Ram Avtar; Pankaj Kumar; Dang T.T. Trinh; Au Van Hoa; Tran Van Ty; Nigel K. Downes
Water, 14, 3, 412, 412, {MDPI} {AG}, 2022年01月
研究論文(学術雑誌) - IMPROVING THE NORTH AMERICAN MULTI-MODEL ENSEMBLE (NMME) PRECIPITATION FORECASTS AT SEASONAL SCALE OVER THE HIMALAYAN REGION USING MACHINE LEARNING
SOURABH SHRIVASTAVA; RAM AVTAR; PRASANTA KUMAR BAL
International Journal of Big Data Mining for Global Warming, 03, 02, World Scientific Pub Co Pte Ltd, 2021年12月
研究論文(学術雑誌) - Digitalization to achieve sustainable development goals: Steps towards a Smart Green Planet
Maria E. Mondejar; Ram Avtar; Heyker Lellani Baños Diaz; Rama Kant Dubey; Jesús Esteban; Abigail Gómez-Morales; Brett Hallam; Nsilulu Tresor Mbungu; Chukwuebuka Christopher Okolo; Kumar Arun Prasad; Qianhong She; Sergi Garcia-Segura
Science of the Total Environment, 794, 2021年11月10日 - Monitoring Metropolitan Growth Dynamics for Achieving Sustainable Urbanization (SDG 11.3) in Kolkata Metropolitan Area, India
Sk Mithun; Mehebub Sahana; Subrata Chattopadhyay; Brian Alan Johnson; Khaled Mohamed Khedher; Ram Avtar
Remote Sensing, 13, 21, 2021年11月03日
研究論文(学術雑誌) - Spatial distribution of inter- and intra-crop variability using time-weighted dynamic time warping analysis from Sentinel-1 datasets
Shreedevi Moharana; B.V.N.P. Kambhammettu; Syam Chintala; Arjangi Sandhya Rani; Ram Avtar
Remote Sensing Applications: Society and Environment, 24, 100630, 100630, Elsevier BV, 2021年11月
研究論文(学術雑誌) - Basin-wide flood depth and exposure mapping from SAR images and machine learning models
Chen Hao; Ali P. Yunus; Srikrishnan Siva Subramanian; Ram Avtar
Journal of Environmental Management, 297, 2021年11月01日
研究論文(学術雑誌) - High-resolution urban change modeling and flood exposure estimation at a national scale using open geospatial data: A case study of the Philippines
Brian A. Johnson; Ronald C. Estoque; Xuecao Li; Pankaj Kumar; Rajarshi Dasgupta; Ram Avtar; Damasa B. Magcale-Macandog
Computers, Environment and Urban Systems, 90, 2021年11月
研究論文(学術雑誌) - Spatiotemporal variations in groundwater levels and the impact on land subsidence in CanTho, Vietnam
Tran Van Ty; Huynh Vuong Thu Minh; Ram Avtar; Pankaj Kumar; Huynh Van Hiep; Masaaki Kurasaki
Groundwater for Sustainable Development, 15, 100680, 100680, Elsevier {BV}, 2021年11月
研究論文(学術雑誌) - Scenario-based numerical simulation to predict future water quality for developing robust water management plan: a case study from the Hau River, Vietnam
Nguyen Hong Duc; Ram Avtar; Pankaj Kumar; Pham Phuong Lan
Mitigation and Adaptation Strategies for Global Change, 26, 7, Springer Science and Business Media {LLC}, 2021年10月
研究論文(学術雑誌) - Use of multi‐frequency (C‐band and L‐band) SAR data to monitor peat subsidence based on time‐series SBAS InSAR technique
Deha Agus Umarhadi; Ram Avtar; Wirastuti Widyatmanti; Brian Alan Johnson; Ali P. Yunus; Khaled Mohamed Khedher; Gulab Singh
Land Degradation & Development, 32, 16, 4779, 4794, Wiley, 2021年08月10日
研究論文(学術雑誌) - Assessing flood-induced ecological vulnerability and risk using GIS-based in situ measurements in Bhagirathi sub-basin, India
Sufia Rehman; Mohd Sayeed Ul Hasan; Abhishek Kumar Rai; Ram Avtar; Haroon Sajjad
Arabian Journal of Geosciences, 14, 15, 2021年08月
研究論文(学術雑誌) - MODIS NDVI Multi-Temporal Analysis Confirms Farmer Perceptions on Seasonality Variations Affecting Apple Orchards in Kinnaur, Himachal Pradesh
Himangana Gupta; Lakhvinder Kaur; Mahbooba Asra; Ram Avtar; C. Sudhakar Reddy
Agriculture, 11, 8, 724, 724, {MDPI} {AG}, 2021年07月30日
研究論文(学術雑誌) - Assessing flood-induced ecological vulnerability and risk using GIS-based in situ measurements in Bhagirathi sub-basin, India
Sufia Rehman; Mohd Sayeed Ul Hasan; Abhishek Kumar Rai; Ram Avtar; Haroon Sajjad
Arabian Journal of Geosciences, 14, 15, Springer Science and Business Media LLC, 2021年07月27日
研究論文(学術雑誌) - Does building development in Dhaka comply with land use zoning? An analysis using nighttime light and digital building heights
Md. Mustafizur Rahman; Ram Avtar; Sohail Ahmad; Luis Inostroza; Prakhar Misra; Pankaj Kumar; Wataru Takeuchi; Akhilesh Surjan; Osamu Saito
Sustainability Science, 16, 4, 1323, 1340, Springer Science and Business Media {LLC}, 2021年07月02日
研究論文(学術雑誌) - Resource recovery from landfill leachate: An experimental investigation and perspectives
Tonni Agustiono Kurniawan; Deepak Singh; Ram Avtar; Mohd Hafiz Dzarfan Othman; Goh Hui Hwang; Ahmad B. Albadarin; Mashallah Rezakazemi; Tjandra Setiadi; Saeed Shirazian
Chemosphere, 274, 2021年07月
研究論文(学術雑誌) - Scenario-Based Hydrological Modeling for Designing Climate-Resilient Coastal Water Resource Management Measures: Lessons from Brahmani River, Odisha, Eastern India
Pankaj Kumar; Rajarshi Dasgupta; Shalini Dhyani; Rakesh Kadaverugu; Brian Alan Johnson; Shizuka Hashimoto; Netrananda Sahu; Ram Avtar; Osamu Saito; Shamik Chakraborty; Binaya Kumar Mishra
Sustainability, 13, 11, 6339, 6339, {MDPI} {AG}, 2021年06月03日
研究論文(学術雑誌) - Resource recovery toward sustainability through nutrient removal from landfill leachate
Tonni Agustiono Kurniawan; Deepak Singh; Wenchao Xue; Ram Avtar; Mohd Hafiz Dzarfan Othman; Goh Hui Hwang; Tjandra Setiadi; Ahmad B. Albadarin; Saeed Shirazian
Journal of Environmental Management, 287, 112265, 112265, Elsevier BV, 2021年06月01日
研究論文(学術雑誌) - Integrating land use/land cover change with change in functional zones’ boundary of the East Dongting Lake National Nature Reserve, China
Juan Xiao; Teiji Watanabe; Xi Lu; Mohan Bahadur Chand; Deha Agus Umarhadi; Xinyu Chen; Ram Avtar
Physics and Chemistry of the Earth, Parts A/B/C, 126, 103041, 103041, Elsevier {BV}, 2021年06月
研究論文(学術雑誌) - A societal transition of MSW management in Xiamen (China) toward a circular economy through integrated waste recycling and technological digitization
Tonni Agustiono Kurniawan; Waihung Lo; Deepak Singh; Mohd Hafiz Dzarfan Othman; Ram Avtar; Goh Hui Hwang; Ahmad B. Albadarin; Axel Olaf Kern; Saeed Shirazian
Environmental Pollution, 277, 2021年05月15日
研究論文(学術雑誌) - Arsenic removal in aqueous solutions using FeS
2
Dun Fu; Tonni Agustiono Kurniawan; Lan Lin; Yaqiong Li; Ram Avtar; Mohd Hafiz Dzarfan Othman; Feng Li
Journal of Environmental Management, 286, 2021年05月15日
研究論文(学術雑誌) - Nexus between Water Security Framework and Public Health: A Comprehensive Scientific Review
Sushila Paudel; Pankaj Kumar; Rajarshi Dasgupta; Brian Alan Johnson; Ram Avtar; Rajib Shaw; Binaya Kumar Mishra; Sakiko Kanbara
Water, 13, 10, 1365, 1365, {MDPI} {AG}, 2021年05月14日
研究論文(学術雑誌) - Impact of population growth and land use and land cover (LULC) changes on water quality in tourism-dependent economies using a geographically weighted regression approach
Andi Besse Rimba; Geetha Mohan; Saroj Kumar Chapagain; Andi Arumansawang; Carolyn Payus; Kensuke Fukushi; Husnayaen; Takahiro Osawa; Ram Avtar
Environmental Science and Pollution Research, 28, 20, 25920, 25938, 2021年05月
研究論文(学術雑誌) - Recovering heavy metals from electroplating wastewater and their conversion into Zn
2 Cr-layered double hydroxide (LDH) for pyrophosphate removal from industrial wastewater
Dun Fu; Tonni Agustiono Kurniawan; Ram Avtar; Pan Xu; Mohd Hafiz Dzarfan Othman
Chemosphere, 271, 2021年05月
研究論文(学術雑誌) - Characterization and applications of Thermomonas hydrothermalis isolated from Jordan's hot springs for biotechnological and medical purposes
Hala I. Al-Daghistani; Balsam Talal Mohammad; Tonni Agustiono Kurniawan; Deepak Singh; Alexander D. Rabadi; Wenchao Xue; Ram Avtar; Mohd Hafiz Dzarfan Othman; Saeed Shirazian
Process Biochemistry, 104, 171, 181, 2021年05月
研究論文(学術雑誌) - Geochemical modeling to infer genetic origin of groundwater and associated health risks in desertic aquifers
Chander Kumar Singh; Anand Kumar; Satyanarayan Shashtri; Alok Kumar; Javed Mallick; Amit Singh; Ram Avtar; Ravi Prakash Singh; Pankaj Kumar; Shyam Ranjan
Groundwater for Sustainable Development, 13, 100569, 100569, Elsevier {BV}, 2021年05月
研究論文(学術雑誌) - Applicability of TiO
2 (B) nanosheets@hydrochar composites for adsorption of tetracycline (TC) from contaminated water
Zhu Mengting; Tonni Agustiono Kurniawan; Ram Avtar; Mohd Hafiz Dzarfan Othman; Tong Ouyang; Huang Yujia; Zhang Xueting; Tjandra Setiadi; Iswanto Iswanto
Journal of Hazardous Materials, 405, 2021年03月05日
研究論文(学術雑誌) - Induction of Apoptosis and Regulation of MicroRNA Expression by (2E,6E)-2,6-bis-(4-hydroxy-3-methoxybenzylidene)-cyclohexanone (BHMC) Treatment on MCF-7 Breast Cancer Cells
Swee Keong Yeap; Norlaily Mohd Ali; Muhammad Nadeem Akhtar; Nursyamirah Abd Razak; Zhi Xiong Chong; Wan Yong Ho; Lily Boo; Seema Zareen; Tonni Agustiono Kurniawan; Ram Avtar; Stephanie Y. L. Ng; Alan Han Kiat Ong; Noorjahan Banu Alitheen
Molecules, 26, 5, 1277, 1277, {MDPI} {AG}, 2021年02月26日
研究論文(学術雑誌) - Reforming MSWM in Sukunan (Yogjakarta, Indonesia): A case-study of applying a zero-waste approach based on circular economy paradigm
Tonni Agustiono Kurniawan; Ram Avtar; Deepak Singh; Wenchao Xue; Mohd Hafiz Dzarfan Othman; Goh Hui Hwang; Iswanto Iswanto; Ahmad B. Albadarin; Axel Olaf Kern
Journal of Cleaner Production, 284, 2021年02月15日 - Quantifying the Northward Spread of Ticks (Ixodida) as Climate Warms in Northern Russia
Leonid N. Vladimirov; Grigory N. Machakhtyrov; Varvara A. Machakhtyrova; Albertus S. Louw; Netrananda Sahu; Ali P. Yunus; Ram Avtar
Atmosphere, 12, 2, 233, 233, {MDPI} {AG}, 2021年02月08日
研究論文(学術雑誌) - Remote Sensing for International Peace and Security: Its Role and Implications
Ram Avtar; Asma Kouser; Ashwani Kumar; Deepak Singh; Prakhar Misra; Ankita Gupta; Ali P. Yunus; Pankaj Kumar; Brian Alan Johnson; Rajarshi Dasgupta; Netrananda Sahu; Andi Besse Rimba
Remote Sensing, 13, 3, 439, 439, {MDPI} {AG}, 2021年01月27日
研究論文(学術雑誌) - Spatio-Temporal Analysis of Surface Water Quality in Mokopane Area, Limpopo, South Africa
Mmasabata Molekoa; Ram Avtar; Pankaj Kumar; Huynh Thu Minh; Rajarshi Dasgupta; Brian Johnson; Netrananda Sahu; Ram Verma; Ali Yunus
Water, 13, 2, 220, 220, {MDPI} {AG}, 2021年01月18日
研究論文(学術雑誌) - Impact of COVID-19 Lockdown on the Fisheries Sector: A Case Study from Three Harbors in Western India
Ram Avtar; Deepak Singh; Deha Agus Umarhadi; Ali P. Yunus; Prakhar Misra; Pranav N. Desai; Asma Kouser; Tonni Agustiono Kurniawan; KBVN Phanindra
Remote Sensing, 13, 2, 183, 183, {MDPI} {AG}, 2021年01月07日
研究論文(学術雑誌) - Impacts of changes in mangrove ecosystems in the Ba and rewa deltas, Fiji using multi-temporal landsat data and social survey
Ram Avtar; Miliana Navia; Jone Sassen; Masahiko Fujii
Coastal Engineering Journal, 2021年
研究論文(学術雑誌) - Exploring Indigenous and Local Knowledge and Practices (ILKPs) in Traditional Jhum Cultivation for Localizing Sustainable Development Goals (SDGs): A Case Study from Zunheboto District of Nagaland, India
Rajarshi Dasgupta; Shalini Dhyani; Mrittika Basu; Rakesh Kadaverugu; Shizuka Hashimoto; Pankaj Kumar; Brian Alan Johnson; Yasuo Takahashi; Bijon K. Mitra; Ram Avtar; Priyanka Mitra
Environmental Management, 2021年
研究論文(学術雑誌) - Exploring climate variability and its impact on drought occurrence: Evidence from Godavari Middle sub-basin, India
Md Masroor; Sufia Rehman; Ram Avtar; Mehebub Sahana; Raihan Ahmed; Haroon Sajjad
Weather and Climate Extremes, 30, 2020年12月
研究論文(学術雑誌) - A rapid indicator-based assessment of foreign resident preparedness in Japan during Typhoon Hagibis
Rajarshi Dasgupta; Mrittika Basu; Pankaj Kumar; Brian Alan Johnson; Bijon K. Mitra; Ram Avtar; Rajib Shaw
International Journal of Disaster Risk Reduction, 51, 2020年12月
研究論文(学術雑誌) - Socio-hydrology: A key approach for adaptation to water scarcity and achieving human well-being in large riverine islands
Pankaj Kumar; Ram Avtar; Rajarshi Dasgupta; Brian Alan Johnson; Abhijit Mukherjee; Md Nasif Ahsan; Duc Cong Hiep Nguyen; Hong Quan Nguyen; Rajib Shaw; Binaya Kumar Mishra
Progress in Disaster Science, 8, 2020年12月
研究論文(学術雑誌) - Assessing sustainable development prospects through remote sensing: A review
Ram Avtar; Akinola Adesuji Komolafe; Asma Kouser; Deepak Singh; Ali P. Yunus; Jie Dou; Pankaj Kumar; Rajarshi Das Gupta; Brian Alan Johnson; Huynh Vuong Thu Minh; Ashwani Kumar Aggarwal; Tonni Agustiono Kurniawan
Remote Sensing Applications: Society and Environment, 20, 2020年11月 - Advanced Rainfall Trend Analysis of 117 Years over West Coast Plain and Hill Agro-Climatic Region of India
Atul Saini; Dr. Netrananda Sahu; Pankaj Kumar; Sridhara Nayak; Weili DUAN; Ram Avtar; Swadhin Behera
Atmosphere, 11, 11, 1225, 1225, {MDPI} {AG}, 2020年11月
研究論文(学術雑誌) - Assessing the Influence of UAV Altitude on Extracted Biophysical Parameters of Young Oil Palm
Ram Avtar; Stanley Anak Suab; Mohd Shahrizan Syukur; Alexius Korom; Deha Agus Umarhadi; Ali P. Yunus
Remote Sensing, 12, 18, 2020年09月17日
研究論文(学術雑誌) - Fabrication, characterization, and application of ternary magnetic recyclable Bi
2 WO6 /BiOI@Fe3 O4 composite for photodegradation of tetracycline in aqueous solutions
Zhu Mengting; Tonni Agustiono Kurniawan; You Yanping; Mohd Hafiz Dzarfan Othman; Ram Avtar; Dun Fu; Goh Hui Hwang
Journal of Environmental Management, 270, 2020年09月15日
研究論文(学術雑誌) - Functionalizing TiO
2 with graphene oxide for enhancing photocatalytic degradation of methylene blue (MB) in contaminated wastewater
Tonni Agustiono Kurniawan; Zhu Mengting; Dun Fu; Swee Keong Yeap; Mohd Hafiz Dzarfan Othman; Ram Avtar; Tong Ouyang
Journal of Environmental Management, 270, 110871, 110871, Elsevier BV, 2020年09月15日
研究論文(学術雑誌) - Did the COVID-19 Lockdown-Induced Hydrological Residence Time Intensify the Primary Productivity in Lakes? Observational Results Based on Satellite Remote Sensing
Ram Avtar; Pankaj Kumar; Hitesh Supe; Dou Jie; Netranada Sahu; Binaya Mishra; Ali Yunus
Water, 12, 9, 2020年09月15日
研究論文(学術雑誌) - Mapping Brick Kilns to Support Environmental Impact Studies around Delhi Using Sentinel-2
Prakhar Misra; Ryoichi Imasu; Sachiko Hayashida; Ardhi Adhary Arbain; Ram Avtar; Wataru Takeuchi
ISPRS International Journal of Geo-Information, 9, 9, 544, 544, {MDPI} {AG}, 2020年09月11日
研究論文(学術雑誌) - Impact of indo-pacific climate variability on rice productivity in Bihar, India
Netrananda Sahu; Atul Saini; Swadhin Behera; Takahiro Sayama; Sridhara Nayak; Limonlisa Sahu; Weili Duan; Ram Avtar; Masafumi Yamada; R. B. Singh; Kaoru Takara
Sustainability (Switzerland), 12, 17, 2020年09月
研究論文(学術雑誌) - Assessment of forest carbon stocks for REDD+ implementation in the muyong forest system of Ifugao, Philippines
Ram Avtar; Kenichi Tsusaka; Srikantha Herath
Environmental Monitoring and Assessment, 192, 9, Springer Science and Business Media {LLC}, 2020年09月
研究論文(学術雑誌) - Land Cover Influences on LST in Two Proposed Smart Cities of India: Comparative Analysis Using Spectral Indices
Manish Ramaiah; Ram Avtar; Md. Mustafizur Rahman
Land, 9, 9, 292, 292, {MDPI} {AG}, 2020年08月24日
研究論文(学術雑誌) - Mapping of Archaeological Sites using UAV Aerial Survey and PPK GNSS Ground Survey Techniques in Central Asia
Stanley Anak Suab; Yuichi Hayakawa; Shogo Kume; Yuji Yamaguchi; Bakyt Amanbaeva; Abdynaby Kadyrov; Ram Avtar; Takuro Ogura
IOP Conference Series: Earth and Environmental Science, 540, 1, 012014, 012014, IOP Publishing, 2020年08月04日
研究論文(国際会議プロシーディングス) - Machine learning methods for landslide susceptibility studies: A comparative overview of algorithm performance
Abdelaziz Merghadi; Ali P. Yunus; Jie Dou; Jim Whiteley; Binh ThaiPham; Dieu Tien Bui; Ram Avtar; Boumezbeur Abderrahmane
Earth-Science Reviews, 207, 2020年08月 - Impact of Indo-Pacific Climate Variability on High Streamflow Events in Mahanadi River Basin, India
Netrananda Sahu; Arpita Panda; Sridhara Nayak; Atul Saini; Manoranjan Mishra; Takahiro Sayama; Limonlisa Sahu; Weili Duan; Ram Avtar; Swadhin Behera
Water, 12, 7, 2020年07月09日
研究論文(学術雑誌) - Impact of Rice Intensification and Urbanization on Surface Water Quality in An Giang Using a Statistical Approach
Huynh Vuong Thu Minh; Ram Avtar; Pankaj Kumar; Kieu Ngoc Le; Masaaki Kurasaki; Tran Van Ty
Water, 12, 6, 1710, 1710, {MDPI} {AG}, 2020年06月15日
研究論文(学術雑誌) - Different sampling strategies for predicting landslide susceptibilities are deemed less consequential with deep learning
Jie Dou; Ali P. Yunus; Abdelaziz Merghadi; Ataollah Shirzadi; Hoang Nguyen; Yawar Hussain; Ram Avtar; Yulong Chen; Binh Thai Pham; Hiromitsu Yamagishi
Science of The Total Environment, 720, 137320, 137320, Elsevier {BV}, 2020年06月, [査読有り]
研究論文(学術雑誌) - Google Earth Engine for the Detection of Soiling on Photovoltaic Solar Panels in Arid Environments
Hitesh Supe; Ram Avtar; Deepak Singh; Ankita Gupta; Ali P. Yunus; Jie Dou; Ankit A. Ravankar; Geetha Mohan; Saroj Kumar Chapagain; Vivek Sharma; Chander Kumar Singh; Olga Tutubalina; Ali Kharrazi
Remote Sensing, 12, 9, 1466, MDPI, 2020年05月05日, [査読有り], [国際誌]
英語, 研究論文(学術雑誌) - Participatory Approach for More Robust Water Resource Management: Case Study of the Santa Rosa Sub-Watershed of the Philippines
Pankaj Kumar; Brian Alan Johnson; Rajarshi Dasgupta; Ram Avtar; Shamik Chakraborty; Masayuki Kawai; Damasa B. Magcale-Macandog
Water, 12, 4, 2020年04月19日
研究論文(学術雑誌) - Monitoring Effect of Spatial Growth on Land Surface Temperature in Dhaka
Md. Mustafizur Rahman; Ram Avtar; Ali P. Yunus; Jie Dou; Prakhar Misra; Wataru Takeuchi; Netrananda Sahu; Pankaj Kumar; Brian Alan Johnson; Rajarshi Dasgupta; Ali Kharrazi; Shamik Chakraborty; Tonni Agustiono Kurniawan
Remote Sensing, 12, 7, 1191, 1191, {MDPI} {AG}, 2020年04月08日, [査読有り]
研究論文(学術雑誌) - An Analysis of Urban Land Use/Land Cover Changes in Blantyre City, Southern Malawi (1994–2018)
John Mawenda; Teiji Watanabe; Ram Avtar
Sustainability, 12, 6, 2020年03月18日
研究論文(学術雑誌) - 2D Graphene oxide (GO) doped p-n type BiOI/Bi
2 WO6 as a novel composite for photodegradation of bisphenol A (BPA) in aqueous solutions under UV-vis irradiation
Zhu Mengting; Tonni Agustiono Kurniawan; You Yanping; Ram Avtar; Mohd Hafiz Dzarfan Othman
Materials Science and Engineering C, 108, 2020年03月
研究論文(学術雑誌) - Multi-temporal remote sensing data to monitor terrestrial ecosystem responses to climate variations in Ghana
Ram Avtar; Ali P. Yunus; Osamu Saito; Ali Kharrazi; Pankaj Kumar; Kazuhiko Takeuchi
Geocarto International, 37, 2, 1, 17, Informa {UK} Limited, 2020年02月11日
研究論文(学術雑誌) - 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, 349, 349, {MDPI} {AG}, 2020年01月21日
研究論文(学術雑誌) - Utilizing geospatial information to implement SDGs and monitor their Progress
Ram Avtar; Ridhika Aggarwal; Ali Kharrazi; Pankaj Kumar; Tonni Agustiono Kurniawan
Environmental Monitoring and Assessment, 192, 1, Springer Science and Business Media {LLC}, 2020年01月
研究論文(学術雑誌) - Village level provisioning ecosystem services and their values to local communities in the peri-urban areas of Manila, The Philippines
Shamik Chakraborty; Ram Avtar; Raveena Raj; Huynh Vuong Thu Minh
Land, 8, 12, 2019年12月01日
研究論文(学術雑誌) - Monitoring changes in land use and distribution of mangroves in the southeastern part of the Mekong River Delta, Vietnam
Huynh Thi Cam Hong; Ram Avtar; Masahiko Fujii
Tropical Ecology, 60, 4, 552, 565, 2019年12月01日
研究論文(学術雑誌) - Hydrological simulation for predicting the future water quality of adyar river, Chennai, India
Pankaj Kumar; Rajarshi Dasgupta; Manish Ramaiah; Ram Avtar; Brian Alan Johnson; Binaya Kumar Mishra
International Journal of Environmental Research and Public Health, 16, 23, 2019年12月01日, [査読有り]
研究論文(学術雑誌) - REDD+ Implementation in Community-Based Muyong Forest Management in Ifugao, Philippines
Ram Avtar; Kenichi Tsusaka; Srikantha Herath
Land, 8, 11, 2019年11月05日, [査読有り]
研究論文(学術雑誌) - Impact of Climate Variability on Crop Yield in Kalahandi, Bolangir, and Koraput Districts of Odisha, India
Arpita Panda; Netrananda Sahu; Swadhin Behera; Takahiro Sayama; Limonlisa Sahu; Ram Avtar; R.B. Singh; Masafumi Yamada
Climate, 7, 11, 2019年10月28日, [査読有り]
英語, 研究論文(学術雑誌) - UNMANNED AERIAL VEHICLE (UAV) DERIVED NORMALISED DIFFERENCE VEGETATION INDEX (NDVI) AND CROWN PROJECTION AREA (CPA) TO DETECT HEALTH CONDITIONS OF YOUNG OIL PALM TREES FOR PRECISION AGRICULTURE
S. A. Suab; M. S. Syukur; R. Avtar; A. Korom
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLII-4/W16, 611, 614, Copernicus GmbH, 2019年10月01日
研究論文(学術雑誌), Abstract. Malaysia currently is one of the biggest global producers and exporters of palm oil. The world’s expanding oil palm plantation areas contribute to climate change and in-return, climate is change also affecting the health of oil palms through a range of abiotic and biotic stresses. Current advancements in Precision Agriculture research using UAV gives an advantage to detect the health conditions of oil palm at early stages. Thus, remedial actions can be taken to prolong the life and increase oil palms productivity. This paper explores the use of UAV derived NDVI and CPA of young oil palm to detect the health conditions. NDVI of individual oil palm were extracted using ground masking layer from the dense point clouds and visual on-screen manual editing was done for removing trees other than oil palm in ENVI software. The classified individual crown NDVI were then processed to extract the mean NDVI also conversion to vector to obtain the individual crown outline. Extracted mean NDVI was classified into un-healthy and healthy trees while the CPA was classified into small, medium and big size classes. These classes of NDVI and CPA were analysed using GIS overlay method thus revealing the spatial patterns of individual oil palm trees and its health conditions. Overall, the majority of oil palm trees of the study area are healthy but average performing. However, few oil palm trees detected having health problems which has low NDVI and small CPA. This study demonstrates that biophysical parameters such as the CPA can be used to detect individual young oil palm trees health conditions and problems when combined with vegetation indices such as NDVI. - Hydrogeochemical Assessment of Groundwater Quality of Mokopane Area, Limpopo, South Africa Using Statistical Approach
Mmasabata Molekoa; Ram Avtar; Pankaj Kumar; Huynh Minh; Tonni Kurniawan
Water, 11, 9, 1891, 1891, {MDPI} {AG}, 2019年09月11日
研究論文(学術雑誌) - Urban Green Spaces and Their Need in Cities of Rapidly Urbanizing India: A Review
Manish Ramaiah; Ram Avtar
Urban Science, 3, 3, 94, 94, {MDPI} {AG}, 2019年08月25日, [査読有り]
研究論文(学術雑誌) - Exploring Renewable Energy Resources Using Remote Sensing and GIS—A Review
Ram Avtar
Resources, 8, 3, 2019年08月19日
英語, 研究論文(学術雑誌) - Groundwater Quality Assessment Using Fuzzy-AHP in An Giang Province of Vietnam
Huynh Vuong Thu Minh; Avtar Ram; Kumar Pankaj; Tran Dat Q; Tran Van Ty; Behera Hari Charan; Kurasaki Masaaki
GEOSCIENCES, 9, 8, 2019年08月, [査読有り]
研究論文(学術雑誌) - Population–Urbanization–Energy Nexus: A Review
Ram Avtar; Saurabh Tripathi; Ashwani Kumar Aggarwal; Pankaj Kumar
Resources, 8, 3, 136, 136, {MDPI} {AG}, 2019年07月30日
研究論文(学術雑誌) - Improved Bathymetric Mapping of Coastal and Lake Environments Using Sentinel-2 and Landsat-8 Images
Ali P. Yunus; Jie Dou; Xuan Song; Ram Avtar
Sensors, 19, 12, 2019年06月21日, [査読有り]
研究論文(学術雑誌) - Comparative analyses of flood damage models in three Asian countries: towards a regional flood risk modelling
Akinola Adesuji Komolafe; Srikantha Herath; Ram Avtar; Jean Francois Vuillaume
Environment Systems and Decisions, 39, 2, 229, 246, 2019年06月15日
研究論文(学術雑誌) - Sustainability assessment of the groundwater quality in the Western India to achieve urban water security
Saraswat Chitresh; Kumar Pankaj; Dasgupta Rajarshi; Avtar Ram; Bhalani Prashant
APPLIED WATER SCIENCE, 9, 4, 2019年06月, [査読有り] - Effects of Multi-Dike Protection Systems on Surface Water Quality in the Vietnamese Mekong Delta
Huynh Vuong Thu Minh; Masaaki Kurasaki; Tran Van Ty; Dat Quoc Tran; Kieu Ngoc Le; Ram Avtar; Md. Mostafizur Rahman; Mitsuru Osaki
Water, 11, 5, 1010, 1010, 2019年05月14日, [査読有り]
研究論文(学術雑誌) - Monitoring and Mapping of Rice Cropping Pattern in Flooding Area in the Vietnamese Mekong Delta Using Sentinel-1A Data: A Case of An Giang Province
Huynh Vuong Thu Minh; Ram Avtar; Geetha Mohan; Prakhar Misra; Masaaki Kurasaki
ISPRS International Journal of Geo-Information, 8, 5, 211, 211, 2019年05月07日, [査読有り]
研究論文(学術雑誌) - Establishment of detailed loss functions for the urban flood risk assessment in Chao Phraya River basin, Thailand
Komolafe Akinola Adesuji; Herath Srikantha; Avtar Ram
GEOMATICS NATURAL HAZARDS & RISK, 10, 1, 633, 650, 2019年01月19日, [査読有り]
研究論文(学術雑誌) - Assessment of energy-population-urbanization nexus with changing energy industry scenario in India
Avtar, R.; Tripathi, S.; Aggarwal, A.K.
Land, 8, 8, 124, 124, 2019年, [査読有り]
研究論文(学術雑誌) - Comparison of Digital Building Height Models Extracted from AW3D, TanDEM-X, ASTER, and SRTM Digital Surface Models over Yangon City
Misra Prakhar; Avtar Ram; Takeuchi Wataru
REMOTE SENSING, 10, 12, 2018年12月, [査読有り]
研究論文(学術雑誌) - Removal of acetaminophen from synthetic wastewater in a fixed-bed column adsorption using low-cost coconut shell waste pretreated with NaOH, HNO3, ozone, and/or chitosan
Lin Yanyan; Kurniawan Tonni Agustiono; Zhu Mengting; Ouyang Tong; Avtar Ram; Othman Moh; Hafiz Dzarfan; Mohammad Balsam T; Albadarin Ahmad B
JOURNAL OF ENVIRONMENTAL MANAGEMENT, 226, 365, 376, 2018年11月15日, [査読有り]
研究論文(学術雑誌) - Land Transition and Intensity Analysis of Cropland Expansion in Northern Ghana.
Shoyama K; Braimoh AK; Avtar R; Saito O
Environmental management, 62, 5, 892, 905, 2018年11月, [査読有り]
研究論文(学術雑誌) - Estimation of winter wheat crop growth parameters using time series Sentinel-1A SAR data
P. Kumar; R. Prasad; D. K. Gupta; V. N. Mishra; A. K. Vishwakarma; V. P. Yadav; R. Bala; A. Choudhary; R. Avtar
Geocarto International, 33, 9, 942, 956, Taylor and Francis Ltd., 2018年09月02日
英語, 研究論文(学術雑誌) - Use of Water Balance and Tracer-Based Approaches to Monitor Groundwater Recharge in the Hyper-Arid Gobi Desert of Northwestern China
Akiyama Tomohiro; Kubota Jumpei; Fujita Koji; Tsujimura Maki; Nakawo Masayoshi; Avtar Ram; Kharrazi Ali
ENVIRONMENTS, 5, 5, 1, 15, 2018年05月, [査読有り]
研究論文(学術雑誌) - Methodology to Assess Potential Flood Damages in Urban Areas under the Influence of Climate Change
Akinola Adesuji Komolafe; Srikantha Herath; Ram Avtar
Natural Hazards Review, 19, 2, 05018001, 05018001, 2018年05月01日, [査読有り]
英語, 研究論文(学術雑誌) - Development of generalized loss functions for rapid estimation of flood damages: a case study in Kelani River basin, Sri Lanka
Akinola Adesuji Komolafe; Srikantha Herath; Ram Avtar
Applied Geomatics, 10, 1, 13, 30, 2018年03月01日, [査読有り]
英語, 研究論文(学術雑誌) - Sensitivity of flood damage estimation to spatial resolution
A. A. Komolafe; S. Herath; R. Avtar
Journal of Flood Risk Management, 11, S370, S381, 2018年01月01日
英語, 研究論文(学術雑誌) - Agricultural water policy reforms in China: a representative look at Zhangye City, Gansu Province, China
Tomohiro Akiyama; Ali Kharrazi; Jia Li; Ram Avtar
Environmental Monitoring and Assessment, 190, 1, 9, 2018年01月01日, [査読有り]
英語, 研究論文(学術雑誌) - Quantitative Analysis of Transient Intertidal Submarine Groundwater Discharge in Coastal Aquifer of Western Japan
Pankaj Kumar; Maki Tsujimura; Chitresh Saraswat; Prashant K. Srivastava; Manish Kumar; Ram Avtar
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES, 87, 3, 423, 432, 2017年09月, [査読有り]
英語, 研究論文(学術雑誌) - Adapting Water Resources Planning to a Changing Climate: Towards a Shift from Option Robustness to Process Robustness for Stakeholder Involvement and Social Learning
Ali Kharrazi; Pankaj Kumar; Chitresh Saraswat; Ram Avtar; Binaya Kumar Mishra
Journal of Climate Change, 3, 2, 81, 94, 2017年08月10日, [査読有り]
研究論文(学術雑誌) - Mathematics in Utilizing Remote Sensing Data for Investigating and Modelling Environmental Problems
Hasi Bagan; Ram Avtar; Hajime Seya; Huade Guan
MATHEMATICAL PROBLEMS IN ENGINEERING, 2017, 1, 3, 2017年, [査読有り]
英語, 研究論文(学術雑誌) - Mapping of groundwater potential zones in Killinochi area, Sri Lanka, using GIS and remote sensing techniques
Pankaj Kumar; Srikantha Herath; Ram Avtar; Kazuhiko Takeuchi
Sustainable Water Resources Management, 2, 4, 419, 430, 2016年12月01日
研究論文(学術雑誌) - Batch technique to evaluate the efficiency of different natural adsorbents for defluoridation from groundwater
Pankaj Kumar; Chitresh Saraswat; Binaya Kumar Mishra; Ram Avtar; Hiral Patel; Asha Patel; Tejal Sharma; Roshni Patel
Applied Water Science, 7, 5, 2597, 2606, 2016年09月, [査読有り]
研究論文(学術雑誌) - Uncertainties in Tidally Adjusted Estimates of Sea Level Rise Flooding (Bathtub Model) for the Greater London
Ali P. Yunus; Ram Avtar; Steven Kraines; Masumi Yamamuro; Fredrik Lindberg; C. S. B. Grimmond
REMOTE SENSING, 8, 5, 2016年05月, [査読有り]
英語, 研究論文(学術雑誌) - Hydrogeochemical Evolution and Appraisal of Groundwater Quality in Panna District, Central India
Pankaj Kumar; Alok Kumar; Chander Kumar Singh; Chitresh Saraswat; Ram Avtar; A. L. Ramanathan; Srikantha Herath
EXPOSURE AND HEALTH, 8, 1, 19, 30, 2016年03月, [査読有り]
英語, 研究論文(学術雑誌) - Delhi's land cover change in post transit era
Sohail Ahmad; Ram Avtar; Mahendra Sethi; Akhilesh Surjan
CITIES, 50, 111, 118, 2016年02月, [査読有り]
英語, 研究論文(学術雑誌) - Potential application of remote sensing in monitoring ecosystem services of forests, mangroves and urban areas
Ram Avtar; Pankaj Kumar; Akiko Oono; Chitresh Saraswat; Singay Dorji; Zarchi Hlaing
Geocarto International, 32, 8, 874, 885, 2016年
研究論文(学術雑誌) - Examining the Ecology of Commodity Trade Networks Using an Ecological Information-Based Approach: Toward Strategic Assessment of Resilience
Ali Kharrazi; Steven Kraines; Elena Rovenskaya; Ram Avtar; Shuichi Iwata; Masaru Yarime
JOURNAL OF INDUSTRIAL ECOLOGY, 19, 5, 805, 813, 2015年10月, [査読有り]
英語, 研究論文(学術雑誌) - Payment of Ecosystem Service to Alleviate Poverty from Kyrgyz Republic in Central Asia Considering Climate Change and Extreme Weather Condition
Chitresh Saraswat; Pankaj Kumar; Dinara Kem; Ram Avtar; AL. Ramanathan
Journal of Climate Change, 1, 1,2, 119, 128, 2015年09月01日, [査読有り]
研究論文(学術雑誌) - Characterization and evaluation of hydrological processes responsible for spatiotemporal variation of surface water quality at Narmada estuarine region in Gujarat, India
Kumar Nirmal; Kumar Pankaj; Basil George; Kumar Rita N; Kharrazi Ali; Avtar Ram
APPLIED WATER SCIENCE, 5, 3, 261, 270, 2015年09月, [査読有り]
英語, 研究論文(学術雑誌) - Evaluation of DEM generation based on Interferometric SAR using TanDEM-X data in Tokyo
Ram Avtar; Ali P. Yunus; Steven Kraines; Masumi Yamamuro
PHYSICS AND CHEMISTRY OF THE EARTH, 83-84, 166, 177, 2015年, [査読有り]
英語, 研究論文(学術雑誌) - Application of remote sensing techniques toward the role of traditional water bodies with respect to vegetation conditions
Ram Avtar; Srikantha Herath; Osamu Saito; Weena Gera; Gulab Singh; Binaya Mishra; Kazuhiko Takeuchi
Environment, Development and Sustainability, 16, 5, 995, 1011, Kluwer Academic Publishers, 2014年09月01日
英語, 研究論文(学術雑誌) - Assessment of Ganges River Water Quality at Allahabad: A case study for the event of Magha Mela
LN Gupta; Ram Avtar; Ameerjeet Singh; Pankaj Kumar; Emmanuel Mutisya; Geetha Mohan; GS Gupta
International Journal of Life Sciences, 8, 3, Nepal Journals Online ({JOL}), 2014年05月
研究論文(学術雑誌) - Geophysical approach to delineate arsenic hot spots in the alluvial aquifers of Bhagalpur district, Bihar (India) in the central Gangetic plains
Pankaj Kumar; Ram Avtar; Alok Kumar; Chander Kumar Singh; Parijat Tripathi; G. Senthil Kumar; A. L. Ramanathan
2014年
研究論文(学術雑誌), A combined study of the geophysical survey and hydro-geochemistry in the Quaternary alluvial aquifers of Bhagalpur district from Bihar state in central Gangetic plain of India was carried out with the objective of identifying the geochemical processes and their relation with lithological profile. Results of resistivity survey validated with borehole lithology gave us a clear picture of the geological signature of the aquifers, which support the reducing nature of the aquifer where concentration of arsenic was high. Reducing nature of the aquifer environment was shown by water samples having relatively negative Eh value. From XRD study of the soil samples, it was found that goethite, dolomite, calcite, quartz and feldspar are the major minerals for most of the samples. Output of this work concludes that resistivity survey is an economically feasible tool which can be successfully used to target arsenic-safe aquifers on wide scale. - Natural Forest Biomass Estimation Based on Plantation Information Using PALSAR Data
Ram Avtar; Rikie Suzuki; Haruo Sawada
PLOS ONE, 9, 1, e86121, 2014年01月, [査読有り]
英語, 研究論文(学術雑誌) - Role of remote sensing and community forestry to manage forests for the effective implementation of REDD+ mechanism: A case study on Cambodia
Ram Avtar; Haruo Sawada; Pankaj Kumar
Environment, Development and Sustainability, 15, 6, 1593, 1603, 2013年12月
英語, 研究論文(学術雑誌) - Use of DEM data to monitor height changes due to deforestation
Ram Avtar; Haruo Sawada
ARABIAN JOURNAL OF GEOSCIENCES, 6, 12, 4859, 4871, 2013年12月, [査読有り]
英語, 研究論文(学術雑誌) - Hydrogeochemical Assessment of Groundwater Quality of Bundelkhand, India Using Statistical Approach
Ram Avtar; Pankaj Kumar; C. K. Singh; Netrananda Sahu; R. L. Verma; J. K. Thakur; S. Mukherjee
WATER QUALITY EXPOSURE AND HEALTH, 5, 3, 105, 115, 2013年11月, [査読有り]
英語, 研究論文(学術雑誌) - Geochemical processes regulating groundwater chemistry with special reference to nitrate and fluoride enrichment in Chhatarpur area, Madhya Pradesh, India
Ram Avtar; Pankaj Kumar; Akhilesh Surjan; L. N. Gupta; Koel Roychowdhury
ENVIRONMENTAL EARTH SCIENCES, 70, 4, 1699, 1708, 2013年10月, [査読有り]
英語, 研究論文(学術雑誌) - PALSAR 50 m Mosaic Data Based National Level Biomass Estimation in Cambodia for Implementation of REDD plus Mechanism
Ram Avtar; Rikie Suzuki; Wataru Takeuchi; Haruo Sawada
PLOS ONE, 8, 10, e74807, 2013年10月, [査読有り]
英語, 研究論文(学術雑誌) - Full polarimetric PALSAR-based land cover monitoring in Cambodia for implementation of REDD policies
Ram Avtar; Wataru Takeuchi; Haruo Sawada
INTERNATIONAL JOURNAL OF DIGITAL EARTH, 6, 3, 255, 275, 2013年05月, [査読有り]
英語, 研究論文(学術雑誌) - Integrating major ion chemistry with statistical analysis for geochemical assessment of groundwater quality in coastal aquifer of Saijo plain, Ehime Prefecture, Japan
Pankaj Kumar; Ram Avtar
Water Quality: Indicators, Human Impact and Environmental Health, 99, 108, Nova Science Publishers, Inc., 2013年02月
英語, 論文集(書籍)内論文 - Monitoring of biophysical parameters of cashew plants in Cambodia using ALOS/PALSAR data
Ram Avtar; Wataru Takeuchi; Haruo Sawada
ENVIRONMENTAL MONITORING AND ASSESSMENT, 185, 2, 2023, 2037, 2013年02月, [査読有り]
英語, 研究論文(学術雑誌) - Characterization of forests and deforestation in Cambodia using ALOS/PALSAR observation
Ram Avtar; Haruo Sawada; Wataru Takeuchi; Gulab Singh
GEOCARTO INTERNATIONAL, 27, 2, 119, 137, 2012年, [査読有り]
英語, 研究論文(学術雑誌) - Evaluation of modified four-component scattering power decomposition method over highly rugged glaciated terrain
Gulab Singh; Y. Yamaguchi; S. -E. Park; Ram Avtar
GEOCARTO INTERNATIONAL, 27, 2, 139, 151, 2012年, [査読有り]
英語, 研究論文(学術雑誌) - Identification of erosional and inundation hazard zones in Ken-Betwa river linking area, India, using remote sensing and GIS
Ram Avtar; Chander Kumar Singh; Satayanarayan Shashtri; Saumitra Mukherjee
ENVIRONMENTAL MONITORING AND ASSESSMENT, 182, 1-4, 341, 360, 2011年11月, [査読有り]
英語, 研究論文(学術雑誌) - Landslide susceptibility zonation study using remote sensing and GIS technology in the Ken-Betwa River Link area, India
Ram Avtar; C. K. Singh; Gulab Singh; R. L. Verma; S. Mukherjee; H. Sawada
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 70, 4, 595, 606, 2011年11月, [査読有り]
英語, 研究論文(学術雑誌) - Multivariate Statistical Approach to Deduce Hydrogeochemical Processes in the Groundwater Environment of Begusarai District, Bihar
Deepak Agrawal; Pankaj Kumar; Ram Avtar; A. L. Ramanathan
WATER QUALITY EXPOSURE AND HEALTH, 3, 2, 119, 126, 2011年10月, [査読有り]
英語, 研究論文(学術雑誌) - Application of GWQI to Assess Effect of Land Use Change on Groundwater Quality in Lower Shiwaliks of Punjab: Remote Sensing and GIS Based Approach
Chander Kumar Singh; Satyanarayan Shashtri; Saumitra Mukherjee; Rina Kumari; Ram Avatar; Amit Singh; Ravi Prakash Singh
WATER RESOURCES MANAGEMENT, 25, 7, 1881, 1898, 2011年05月
英語, 研究論文(学術雑誌) - A Comparative Study on Hydrogeochemistry of Ken and Betwa Rivers of Bundelkhand Using Statistical Approach
Ram Avtar; Pankaj Kumar; C. K. Singh; S. Mukherjee
WATER QUALITY EXPOSURE AND HEALTH, 2, 3-4, 169, 179, 2011年02月, [査読有り]
英語, 研究論文(学術雑誌) - Genetically modified Cotton species detection by LISS-III satellite data
Mukherjee, Saumitra; Shashtri, Satyanarayan; Singh, Chander Kumar; Kumari, Bindu; Kumari, Reena; Avatar, Ram; Singh, Ami; Mukherjee, Anita; Singh, Bhoop
Nature Publishing Group, 2011年
研究論文(学術雑誌) - Assessment of cashew and rubber plants biophysical parameters based on ALOS/PALSAR data (特集 持続可能な都市システムの構築をめざして(ICUS))
Avtar Ram; Takeuchi Wataru; Sawada Haruo
生産研究, 63, 4, 443, 446, 東京大学生産技術研究所, 2011年
英語, 研究論文(学術雑誌), Information about the biophysical parameters of plants is useful for the prediction of growth, yield, rotation cycle, carbon sequestration and management practices. In this study, we have investigated different biophysical parameters of cashew and rubber plants using Advanced Land Observing Satellite Phased Array L-band Synthetic Aperture Radar (ALOS/PALSAR) backscattering properties in Cambodia. The result shows the plants’ structural dependence on PALSAR data. The backscattering coefficient (σ0) has different response for both plantation types because of differences in their biophysical parameters. This dependency of σ0 shows different behaviour of PALSAR dual polarimetric data. The σ0 HV polarization shows fairly good correlation with the biomass, height, DBH and age of cashew and rubber plantations up to the saturation limit. [This abstract is not included in the PDF] - Identification and analysis of groundwater potential zones in Ken-Betwa river linking area using remote sensing and geographic information system
Ram Avtar; C. K. Singh; Satyanarayan Shashtri; Amit Singh; Saumitra Mukherjee
GEOCARTO INTERNATIONAL, 25, 5, 379, 396, 2010年, [査読有り]
英語, 研究論文(学術雑誌) - Monitoring change in land use and land cover in Rupnagar district of Punjab, India using Landsat and IRS LISS III satellite data
Chander Kumar Singh; Satyanarayan Shashtri; Ram Avtar; Saumitra Mukherjee; Sudhir Kumar Singh
Ecological Questions, 13, 73, 79, Nicolaus Copernicus University, 2010年
英語, 研究論文(学術雑誌) - SPATIAL-TEMPORAL MONITORING OF GROUNDWATER USING MULTIVARIATE STATISTICAL TECHNIQUES IN BAREILLY DISTRICT OF UTTAR PRADESH, INDIA
Sudhir Kumar Singh; Chander Kumar Singh; Kewat Sanjay Kumar; Ramvtar Gupta; Saumitra Mukherjee
JOURNAL OF HYDROLOGY AND HYDROMECHANICS, 57, 1, 45, 54, 2009年
英語, 研究論文(学術雑誌)
- A Systematic Review of Water Governance in Asian Countries: Challenges, Frameworks, and Pathways Toward Sustainable Development Goals
Nguyen Hong Duc; Pankaj Kumar; Pham Tam Long; Gowhar Meraj; Pham Phuong Lan; Mansour Almazroui; Ram Avtar, Earth Systems and Environment, 8, 2, 181, 205, 2024年06月 - UAV-LiDARと長期観察林データを用いた広域AGBマッピング
中路達郎; AVTAR Ram; LITANG Francis Agreement Felix; LI Ang; 中村誠宏; 村上浩; 加藤知道, 日本生態学会大会講演要旨(Web), 71st, 2024年 - Detection and mapping of May 2021 flood in Beaufort, Sabah using Sentinel-1 SAR and Sentinel-2 multispectral in Google Earth Engine
Stanley Anak Suab; Hitesh Supe; Ram Avtar; Ramzah Dambul; Xinyu Chen, IOP Conference Series: Earth and Environmental Science, 1064, 1, 012003, 012003, 2022年07月01日
Abstract
Recurring floods severely impacted the livelihood and socio-economic. It causes disruption of clean water, electricity, communications, properties damages and sometimes loss of life. Information on flooded areas is crucial for effective emergency responses support. In this study we used Sentinel 1 (S-1) C-band and Sentinel 2 (S-2) Multispectral satellite imageries where wider area covered in 12 days repeat satellite pass. The flood event on the 26 May 2021 was identified and we retrieved the S-1 GRD SAR imagery and S-2 level-2A BOA in GEE environment. We analysed the S-1 VV, VH, VV/VH imagery by pixels clustering using object based SNIC classification and Machine Learning (ML) algorithm for extraction of waterbody. Meanwhile for the S-2 we used MNDWI and extracted the waterbody area using thresholding value. We obtained the final flooded area of S-1 and S-2 by subtraction with permanent waterbody. The S-2 flood estimation results were better than S-1. However, S-2 limited to cloud free and less cloudy coverage while S-1 lacking of ability to identify flood in detailed was influenced by slope shadow area. This study provides the basis of detection and mapping floods using S-1 and S-2 imageries through Machine Learning techniques in GEE for local scope of Sabah, Borneo region and Malaysia., IOP Publishing - Combining UAV and satellite image for monitoring drifting ice
Matsumura K; Chiba S; Avtar R; Matoba S; Ichinose T; Morikawa K, Okhotsk Sea and Polar Oceans Research, 5, 2021年09月 - Unmanned Aerial Vehicle: Applications in Agriculture and Environment
Ram Avtar; Teiji Watanabe, Unmanned Aerial Vehicle: Applications in Agriculture and Environment, 1, 199, 2019年01月01日
その他 - Applications of UAVs in Plantation Health and Area Management in Malaysia
Ram Avtar; Stanley Anak Suab; Ali P. Yunus; Pankaj Kumar; Prashant K. Srivastava; Manish Ramaiah; Churchill Anak Juan, Unmanned Aerial Vehicle: Applications in Agriculture and Environment, 85, 100, 2019年01月01日 - Introduction
Ram Avtar; Teiji Watanabe, Unmanned Aerial Vehicle: Applications in Agriculture and Environment, 1, 6, 2019年01月01日 - Unmanned Aerial Vehicle System (UAVS) Applications in Forestry and Plantation Operations: Experiences in Sabah and Sarawak, Malaysian Borneo
Stanley Anak Suab; Ram Avtar, Unmanned Aerial Vehicle: Applications in Agriculture and Environment, 101, 118, 2019年01月01日 - Preface
Ram Avtar, Unmanned Aerial Vehicle: Applications in Agriculture and Environment, v, vi, 2019年01月01日
その他 - Integrating ALOS-PALSAR and ground based observations for forest biomass estimation for REDD+ in Cambodia
Ram Avtar; Saumitra Mukherjee; S.B.S. Abayakoon; Chann Sophal; Rajesh Thapa, APN Science Bulletin, 8, 1, 2018年
Asia-Pacific Network for Global Change Research - Tropical forest, geospatial data and REDD+
Ram Avtar, Tropical Forest, Geospatial Data and REDD+, 1, 139, 2017年01月01日
Tropical Forest, Geospatial Data and REDD+ - Impact of rapid urbanization and climate change on agricultural productivity in africa: Climate change policies in the agricultural sector
Mutisya Emmanuel; Lilian Muasa; Chiahsin Chen; Florence Mutisya; Ram Avtar, Natural Resources Management: Concepts, Methodologies, Tools, and Applications, 3-2, 1121, 1132, 2016年09月08日
IGI Global, 英語 - Linking and harmonizing scenarios and models across scales and domains.
Cheung, W. W. L; Rondinini, C; Avtar, R; Hickler, T; Metzger, J. P; Scharlemann, J. P. W; Yue; T. X, In IPBES;methodological assessment of scenarios;models of biodiversity;ecosystem services. Berlin;Secretariat of the;Intergov;l;Platform for Biodiversity;Ecosystem ServicesIn IPBES;methodological assessment of scenarios;models of biodiversity;ecosystem services. Berlin;Secretariat of the;Intergov;l;Platform for Biodiversity;Ecosystem Services, 2016年09月 - Shoreline and coastal morphological changes induced by the 2004 indian ocean tsunami in the Katchal Island, Andaman and Nicobar – A study using archived satellite images
Ali P. Yunus; Jie Dou; Ram Avtar; A. C. Narayana, Coastal Research Library, 14, 65, 77, 2016年 - A Multivariate approach for water quality assessment of river Mandakini in Chitrakoot, India
L. N. Gupta; Ram Avtar; P. Kumar; G. S. Gupta; R. L. Verma; N. Sahu; S. Sil; A. Jayaraman; K. Roychowdhury; K. Sharma; S. Singh, Journal of Water Resources and Hydraulic Engineering, 3, 1, 22, 29, 2014年09月, [査読有り], [責任著者] - MONITORING RESPONSES OF TERRESTRIAL ECOSYSTEM TO CLIMATE VARIATIONS USING MULTI TEMPORAL REMOTE SENSING DATA IN GHANA
Ram Avtar; Osamu Saito; Gulab Singh; Hideki Kobayashi; Yunus Ali; Srikantha Herath; Kazuhiko Takeuchi, 2014 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS), 761, 763, 2014年, [査読有り]
英語 - Efficiency of multi-frequency, multi-polarized SAR data to monitor growth stages of oil palm plants in Sarawak, Malaysia
Ram Avtar; R. Ishii; H. Kobayashi; H. Fadaei; R. Suzuki; S. Herath, 2013 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS), 2137, 2140, 2013年, [査読有り]
英語 - Evaluation of multi-sensor SAR and optical data to monitor growth stages of oilpalm plants
Ram Avtar; R. Ishii; H. Kobayashi; H. Fadaei; S. Herath; R. Suzuki, CONFERENCE PROCEEDINGS OF 2013 ASIA-PACIFIC CONFERENCE ON SYNTHETIC APERTURE RADAR (APSAR), 115, 118, 2013年, [査読有り]
英語 - Geospatial technique to study forest cover using ALOS/PALSAR data
Ram Avtar; Jay Krishna Thakur; Amit Kumar Mishra; Pankaj Kumar, Geospatial Techniques for Managing Environmental Resources, 9789400718586, 139, 151, 2012年11月01日
Springer Netherlands, 英語 - USE OF DEMs DATA TO ESTIMATE HEIGHT CHANGES DUE TO DEFORESTATION
Ram Avtar; Haruo Sawadaand; Rikie Suzuki, 2012 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS), 5333, 5336, 2012年, [査読有り]
英語 - Plantation based natual forests biomass estimation for REDD policies implementation in Cambodia
Ram Avtar; Wataru Takeuchi; Haruo Sawada, 2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011, 252, 255, 2011年12月22日 - Cambodian forests biomass estimation using ALOS PALSAR 50m mosaic data for REDD+ policies implementation
Ram Avtar; Haruo Sawada, 32nd Asian Conference on Remote Sensing 2011, ACRS 2011, 3, 1962, 1967, 2011年12月01日 - Cashew plants growth monitoring in cambodia using ALOS/PALSAR data
Ram Avtar; Haruo Sawada, 31st Asian Conference on Remote Sensing 2010, ACRS 2010, 1, 37, 43, 2010年12月01日 - Identification of erosional and inundation hazard zones in Ken-Betwa river linking area, India using remote sensing and GIS
Ram Avtar; H. Sawada; S. Mukherjee; M. Kumar; C. K. Singh; P. Kumar, 30th Asian Conference on Remote Sensing 2009, ACRS 2009, 1, 326, 331, 2009年12月01日
- Unmanned Aerial Vehicle: Applications in Agriculture and Environment
アバタル ラム
Springer, 2019年10月, [編者(編著者)] - Tropical forest, Geospatial Data and REDD+
アバタル ラム
2017年03月, [単著] - Integrating major ion chemistry with statistical analysis for geochemical assessment of groundwater quality in coastal aquifer of Saijo plain, Ehime Prefecture, Japan
Pankaj Kumar; Ram Avtar
Water Quality: Indicators, Human Impact and Environmental Health, 2013年02月01日 - Water Resource Management through the Lens of Planetary Health Approach
Pankaj Kumar; Ram Avtar
[編者(編著者)]
- 国際環境保全学総論, 2024年, 修士課程, 環境科学院
- 大学院共通授業科目(教育プログラム):JICA開発大学院連携プログラム環境科学, 2024年, 修士課程, 大学院共通科目
- 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
- 大学院共通授業科目(教育プログラム):JICA開発大学院連携プログラム環境科学, 2024年, 修士課程, 大学院共通科目
- 国際科学コミュニケーション法特論, 2024年, 修士課程, 環境科学院
- 環境情報地理学特論, 2024年, 修士課程, 環境科学院
- ヒマラヤの人と自然の連環: 東西3地域の比較
科学研究費助成事業
2021年04月05日 - 2025年03月31日
渡邉 悌二; 古川 不可知; 韓 志昊; 渡辺 和之; 相馬 拓也; アバタル ラム
日本学術振興会, 基盤研究(A), 北海道大学, 21H04371 - インド・ウッタラカンド州における大規模なバイオガス導入が森林再生にもたらす効果
科学研究費助成事業
2021年04月01日 - 2024年03月31日
アバタル ラム
This research aims to monitor the impact of large-scale biogas intervention on forest regeneration in Uttrakhand area of India. This intervention introduces biogas digesters and replaces fuelwood in 60 villages as part of a low-carbon farming initiative. The study's overarching goal is to examine the consequences of large-scale biogas interventions on forest regeneration and carbon storage in the forest surrounding villages that have adopted biogas technology as their primary source of fuel with comparable villages in the region that had not. We have processed multi-sensor remote sensing data and satellite data, clearly showing a changing forest cover pattern in the study area. Planet satellite-based vegetation data shows an increase of about 2 percent of forest cover in the areas near the villages with biogas intervention. However, it needs ground validation. We are planning to start collecting ground truth data to see the change in forest biomass based on the forest inventory data. High-resolution Planet data shows some vegetation recovery/regeneration in the study area. We are also going to conduct a questionnaire survey to identify the factors of forest recovery and how the people's socio-economic status affects the recovery of the forest in the study area. The questionnaire survey will be useful to get qualitative information about forest status and changes in people’s lifestyle after biogas intervention.
日本学術振興会, 基盤研究(C), 北海道大学, 21K05664 - 地域生態資源の動態評価に適用できる永久凍土分布図の作成
科学研究費助成事業
2017年04月01日 - 2021年03月31日
石川 守; 檜山 哲哉; 飯島 慈裕; アバタル ラム
永久凍土は湿潤土壌環境を生み出し乾燥気候下での森林生育や地表水涵養など地域生態資源の維持に重要な役割を果たす。本研究では永久凍土南限域モンゴルにて永久凍土分布図を高い解像度で作成するとともに、地域の生活水となっている湧水の変遷を解明した。永久凍土分布図は2つの手法(非定常熱伝導式・確率統計)により作成された。湧水変遷は1960年代の官製地図、衛星画像、現地踏査によって調べた。
多地点での深層地温観測にて検証したところ、作成された永久凍土分布図は現状をよく再現した。他方、地温がほぼ0℃となっている永久凍土南限域では観測との不一致が目立つ。ここは湧水の衰退が顕著な地域でもあり今後の改善が求められる。
日本学術振興会, 基盤研究(B), 北海道大学, 17H01849
