Evaluating the impacts of climate change on the hydrology and water resource availability in the 3S river basin of Cambodia, Laos, and Vietnam
The goal of this study is to examine the responses of hydrology and water resource availability to future climate change in the 3S (Sekong, Sesan, and Srepok) river basin located in the tropical countries of Laos, Vietnam, and Cambodia. The calibrated the Soil and Water Assessment Tool (SWAT) model...
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| Format: | Article |
| Language: | English |
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Vietnam Ministry of Science and Technology
2022-03-01
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| Series: | Vietnam Journal of Science, Technology and Engineering |
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| Online Access: | https://vietnamscience.vjst.vn/index.php/vjste/article/view/100 |
| _version_ | 1828047895321903104 |
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| author | Nguyen Thi Thuy Trang Sangam Shrestha Hiroshi Ishidaira Pham Thi Thao Nhi |
| author_facet | Nguyen Thi Thuy Trang Sangam Shrestha Hiroshi Ishidaira Pham Thi Thao Nhi |
| author_sort | Nguyen Thi Thuy Trang |
| collection | DOAJ |
| description |
The goal of this study is to examine the responses of hydrology and water resource availability to future climate change in the 3S (Sekong, Sesan, and Srepok) river basin located in the tropical countries of Laos, Vietnam, and Cambodia. The calibrated the Soil and Water Assessment Tool (SWAT) model was used to investigate changes to the hydrological regime and water resources under various climate change scenarios. The climate change scenarios were designed based on an ensemble of 5 GCM simulations (HadGEM2-AO, CanESM2, ISPL-CM5A-LR, CNRMCM5, and MPI-ESM-MR) for medium emission (RCP4.5) and high emission (RCP8.5) scenarios. The climate of the basin was prognosticated to be warmer and wetter with increased temperature and precipitation in the future. Future climate change causes an increase in stream flow from 29.0 to 45.0%, 2.0 to 8.3%, and 1.2 to 10.6% for the Srepok, Sekong, and Sesan rivers, respectively. Although the discharge is projected to increase in the future, the per capita water availability is projected to decrease to 48.5, 55.1, and 80.2% in the 2090s compared to 2010 for the Srepok, Sekong, and Sesan rivers, respectively, due to population growth. The Sekong and Srepok basins will experience the most serious decline in trend and absolute value of water availability, respectively. The results of this study will be helpful to water resource development, planning, and management under climate change scenarios in the 3S river basin (3SRB).
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| first_indexed | 2024-04-10T18:49:12Z |
| format | Article |
| id | doaj.art-597818ac5fd04ac48bb347e0c31002d3 |
| institution | Directory Open Access Journal |
| issn | 2525-2461 2615-9937 |
| language | English |
| last_indexed | 2024-04-10T18:49:12Z |
| publishDate | 2022-03-01 |
| publisher | Vietnam Ministry of Science and Technology |
| record_format | Article |
| series | Vietnam Journal of Science, Technology and Engineering |
| spelling | doaj.art-597818ac5fd04ac48bb347e0c31002d32023-02-01T08:16:48ZengVietnam Ministry of Science and TechnologyVietnam Journal of Science, Technology and Engineering2525-24612615-99372022-03-0162410.31276/VJSTE.62(4).77-86Evaluating the impacts of climate change on the hydrology and water resource availability in the 3S river basin of Cambodia, Laos, and VietnamNguyen Thi Thuy Trang0 Sangam Shrestha1Hiroshi Ishidaira2Pham Thi Thao Nhi3Faculty of Environment, University of Science, Vietnam National University, Ho Chi Minh city, VietnamWater Engineering and Management, School of Engineering and Technology, Asian Institute of Technology, ThailandInterdisciplinary Centre for River Basin Environment, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, JapanFaculty of Environment, University of Science, Vietnam National University, Ho Chi Minh city, Vietnam; Institute for Computational Science and Technology (ICST), Ho Chi Minh city, Vietnam The goal of this study is to examine the responses of hydrology and water resource availability to future climate change in the 3S (Sekong, Sesan, and Srepok) river basin located in the tropical countries of Laos, Vietnam, and Cambodia. The calibrated the Soil and Water Assessment Tool (SWAT) model was used to investigate changes to the hydrological regime and water resources under various climate change scenarios. The climate change scenarios were designed based on an ensemble of 5 GCM simulations (HadGEM2-AO, CanESM2, ISPL-CM5A-LR, CNRMCM5, and MPI-ESM-MR) for medium emission (RCP4.5) and high emission (RCP8.5) scenarios. The climate of the basin was prognosticated to be warmer and wetter with increased temperature and precipitation in the future. Future climate change causes an increase in stream flow from 29.0 to 45.0%, 2.0 to 8.3%, and 1.2 to 10.6% for the Srepok, Sekong, and Sesan rivers, respectively. Although the discharge is projected to increase in the future, the per capita water availability is projected to decrease to 48.5, 55.1, and 80.2% in the 2090s compared to 2010 for the Srepok, Sekong, and Sesan rivers, respectively, due to population growth. The Sekong and Srepok basins will experience the most serious decline in trend and absolute value of water availability, respectively. The results of this study will be helpful to water resource development, planning, and management under climate change scenarios in the 3S river basin (3SRB). https://vietnamscience.vjst.vn/index.php/vjste/article/view/100climate changeSWAT modeltransboundary river basinwater resources3S (Sekong, Sesan, Srepok) river basin |
| spellingShingle | Nguyen Thi Thuy Trang Sangam Shrestha Hiroshi Ishidaira Pham Thi Thao Nhi Evaluating the impacts of climate change on the hydrology and water resource availability in the 3S river basin of Cambodia, Laos, and Vietnam Vietnam Journal of Science, Technology and Engineering climate change SWAT model transboundary river basin water resources 3S (Sekong, Sesan, Srepok) river basin |
| title | Evaluating the impacts of climate change on the hydrology and water resource availability in the 3S river basin of Cambodia, Laos, and Vietnam |
| title_full | Evaluating the impacts of climate change on the hydrology and water resource availability in the 3S river basin of Cambodia, Laos, and Vietnam |
| title_fullStr | Evaluating the impacts of climate change on the hydrology and water resource availability in the 3S river basin of Cambodia, Laos, and Vietnam |
| title_full_unstemmed | Evaluating the impacts of climate change on the hydrology and water resource availability in the 3S river basin of Cambodia, Laos, and Vietnam |
| title_short | Evaluating the impacts of climate change on the hydrology and water resource availability in the 3S river basin of Cambodia, Laos, and Vietnam |
| title_sort | evaluating the impacts of climate change on the hydrology and water resource availability in the 3s river basin of cambodia laos and vietnam |
| topic | climate change SWAT model transboundary river basin water resources 3S (Sekong, Sesan, Srepok) river basin |
| url | https://vietnamscience.vjst.vn/index.php/vjste/article/view/100 |
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