Impact of Climate Change on the Hydrological Regimes of the Midstream Section of the Yarlung Tsangpo River Basin Based on SWAT Model
Water resources and the water cycle in high mountain areas are significantly impacted by climate change. In this study, the midstream section of the Yarlung Tsangpo River basin, situated in the southern part of the Tibetan Plateau, was chosen as the target area, and the Soil Water Assessment Tool (S...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/15/4/685 |
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| author | Yao Chen Li Wang Xiaonan Shi Chen Zeng Yuchun Wang Guanxing Wang Cicheng Qiangba Caiyun Yue Zugang Sun Ouzhu Renzeng Fan Zhang |
| author_facet | Yao Chen Li Wang Xiaonan Shi Chen Zeng Yuchun Wang Guanxing Wang Cicheng Qiangba Caiyun Yue Zugang Sun Ouzhu Renzeng Fan Zhang |
| author_sort | Yao Chen |
| collection | DOAJ |
| description | Water resources and the water cycle in high mountain areas are significantly impacted by climate change. In this study, the midstream section of the Yarlung Tsangpo River basin, situated in the southern part of the Tibetan Plateau, was chosen as the target area, and the Soil Water Assessment Tool (SWAT) was used to assess how climate change may affect hydrological processes. The SWAT model proved effective for runoff and snow cover area simulation. Surface runoff, interflow, and groundwater accounted for 47.2%, 24.4%, and 28.4% of the total runoff, respectively. The spatial distribution of runoff was mainly influenced by precipitation and glacier distribution, whereas the spatial distributions of individual runoff components were mainly influenced by soil properties. Overall, the total runoff as well as its components (surface runoff, interflow, and groundwater) increased at a rate of 0.03–0.83%/10 yr (<i>p</i> > 0.05) in the study area during 1983–2017, which could be attributed to the increase in precipitation. Surface runoff peaked earlier (August) than interflow and groundwater (September), owing to the longer convergence time of interflow and groundwater. Future predictions showed a warming and wetting trend (<i>p</i> < 0.05) in the study area from 2020 to 2100 under the SSP1-2.6, SSP2-4.5, SSP3-7.0, and SSP5-8.5 scenarios. The total runoff was projected to increase at a rate of 0.92–3.56%/10 yr, and the change of total runoff mainly came from the increase of surface runoff. |
| first_indexed | 2024-03-11T08:00:02Z |
| format | Article |
| id | doaj.art-b9a533bd07f444f88ac2ccb6f0aff2b4 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-11T08:00:02Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-b9a533bd07f444f88ac2ccb6f0aff2b42023-11-16T23:52:05ZengMDPI AGWater2073-44412023-02-0115468510.3390/w15040685Impact of Climate Change on the Hydrological Regimes of the Midstream Section of the Yarlung Tsangpo River Basin Based on SWAT ModelYao Chen0Li Wang1Xiaonan Shi2Chen Zeng3Yuchun Wang4Guanxing Wang5Cicheng Qiangba6Caiyun Yue7Zugang Sun8Ouzhu Renzeng9Fan Zhang10State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, ChinaState Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, ChinaState Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, ChinaState Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, ChinaChina Institute of Water Resources and Hydropower Research, Beijing 100048, ChinaState Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, ChinaHydrology and Water Resources Investigation Bureau of Tibet Autonomous Region, Lhasa 850000, ChinaHydrology and Water Resources Investigation Bureau of Tibet Autonomous Region, Lhasa 850000, ChinaHydrology and Water Resources Investigation Bureau of Tibet Autonomous Region, Lhasa 850000, ChinaHydrology and Water Resources Investigation Bureau of Tibet Autonomous Region, Lhasa 850000, ChinaState Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, ChinaWater resources and the water cycle in high mountain areas are significantly impacted by climate change. In this study, the midstream section of the Yarlung Tsangpo River basin, situated in the southern part of the Tibetan Plateau, was chosen as the target area, and the Soil Water Assessment Tool (SWAT) was used to assess how climate change may affect hydrological processes. The SWAT model proved effective for runoff and snow cover area simulation. Surface runoff, interflow, and groundwater accounted for 47.2%, 24.4%, and 28.4% of the total runoff, respectively. The spatial distribution of runoff was mainly influenced by precipitation and glacier distribution, whereas the spatial distributions of individual runoff components were mainly influenced by soil properties. Overall, the total runoff as well as its components (surface runoff, interflow, and groundwater) increased at a rate of 0.03–0.83%/10 yr (<i>p</i> > 0.05) in the study area during 1983–2017, which could be attributed to the increase in precipitation. Surface runoff peaked earlier (August) than interflow and groundwater (September), owing to the longer convergence time of interflow and groundwater. Future predictions showed a warming and wetting trend (<i>p</i> < 0.05) in the study area from 2020 to 2100 under the SSP1-2.6, SSP2-4.5, SSP3-7.0, and SSP5-8.5 scenarios. The total runoff was projected to increase at a rate of 0.92–3.56%/10 yr, and the change of total runoff mainly came from the increase of surface runoff.https://www.mdpi.com/2073-4441/15/4/685Yarlung Tsangpo Riverhydrological processSWATclimate changeCMIP6 |
| spellingShingle | Yao Chen Li Wang Xiaonan Shi Chen Zeng Yuchun Wang Guanxing Wang Cicheng Qiangba Caiyun Yue Zugang Sun Ouzhu Renzeng Fan Zhang Impact of Climate Change on the Hydrological Regimes of the Midstream Section of the Yarlung Tsangpo River Basin Based on SWAT Model Water Yarlung Tsangpo River hydrological process SWAT climate change CMIP6 |
| title | Impact of Climate Change on the Hydrological Regimes of the Midstream Section of the Yarlung Tsangpo River Basin Based on SWAT Model |
| title_full | Impact of Climate Change on the Hydrological Regimes of the Midstream Section of the Yarlung Tsangpo River Basin Based on SWAT Model |
| title_fullStr | Impact of Climate Change on the Hydrological Regimes of the Midstream Section of the Yarlung Tsangpo River Basin Based on SWAT Model |
| title_full_unstemmed | Impact of Climate Change on the Hydrological Regimes of the Midstream Section of the Yarlung Tsangpo River Basin Based on SWAT Model |
| title_short | Impact of Climate Change on the Hydrological Regimes of the Midstream Section of the Yarlung Tsangpo River Basin Based on SWAT Model |
| title_sort | impact of climate change on the hydrological regimes of the midstream section of the yarlung tsangpo river basin based on swat model |
| topic | Yarlung Tsangpo River hydrological process SWAT climate change CMIP6 |
| url | https://www.mdpi.com/2073-4441/15/4/685 |
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