Runoff spatiotemporal variability driven by climate change and human activity for the Nianchu River Basin in Southwestern Tibet
Study Region: Nianchu River Basin (NRB), a key agricultural area on the Tibetan Plateau in China. Study focus: Runoff is recognized as the most important outcome of water resources management, playing a crucial role in both ecology and hydrology. This study analyzes the spatiotemporal variability of...
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Elsevier
2025-04-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581825001259 |
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| author | Zhenhuan Yuan Kaifei Liu Zeng Dan Qize Gao Ciren Mima Chengpeng Lu |
| author_facet | Zhenhuan Yuan Kaifei Liu Zeng Dan Qize Gao Ciren Mima Chengpeng Lu |
| author_sort | Zhenhuan Yuan |
| collection | DOAJ |
| description | Study Region: Nianchu River Basin (NRB), a key agricultural area on the Tibetan Plateau in China. Study focus: Runoff is recognized as the most important outcome of water resources management, playing a crucial role in both ecology and hydrology. This study analyzes the spatiotemporal variability of runoff in the NRB over the past 48 years and further quantify the impacts of climate conditions, vegetation cover, and irrigation water withdrawal (IWW) on runoff changes. This study aims to improve our understanding of the mechanisms driving runoff changes in alpine mountains. New hydrological insight for the region: The results indicate that the runoff in the NRB has significantly declined by −0.21 mm per decade. The effects of the various influences on runoff are non-stationary at the spatiotemporal scales, with precipitation (Pre) and temperature (Tmp) as the main factors, and Pre consistently contributing the most to changes in runoff until 2002. However, over time, the contribution of Pre has significantly declined. After 2002, the contribution of Tmp gradually became comparable to that of Pre and eventually surpassed it. IWW extraction generally exerts adverse effects, and in areas with poorer vegetation in NRB, NDVI changes significantly impact runoff. Under the context of global warming and increasing human activities, Tmp and IWW have shown a growing adverse impact on basin runoff, offering new insights for water resource management. |
| format | Article |
| id | doaj-art-431c3c86bfbd48809d0a0c7e291a06d2 |
| institution | DOAJ |
| issn | 2214-5818 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj-art-431c3c86bfbd48809d0a0c7e291a06d22025-08-20T02:57:47ZengElsevierJournal of Hydrology: Regional Studies2214-58182025-04-015810230110.1016/j.ejrh.2025.102301Runoff spatiotemporal variability driven by climate change and human activity for the Nianchu River Basin in Southwestern TibetZhenhuan Yuan0Kaifei Liu1Zeng Dan2Qize Gao3Ciren Mima4Chengpeng Lu5College of Hydrology and Water Resources, Hohai University, Nanjing, Jiangsu 210098, ChinaShandong Province Water Resources Department, Jinan, Shandong Province 250013, China; Rikaze City Water Conservancy Bureau, Sanzhuz District, Rikaze City, Tibet Autonomous Region 857000, ChinaRikaze Sub-bureau, Hydrology and Water Resources Survey Bureau of the Tibet Autonomous Region, Sangtse District, Rikaze City, Tibet Autonomous Region 857005, ChinaCollege of Hydrology and Water Resources, Hohai University, Nanjing, Jiangsu 210098, ChinaRikaze City Water Conservancy Bureau, Sanzhuz District, Rikaze City, Tibet Autonomous Region 857000, ChinaCollege of Hydrology and Water Resources, Hohai University, Nanjing, Jiangsu 210098, China; National Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing 210098, China; Corresponding author at: College of Hydrology and Water Resources, Hohai University, Nanjing, Jiangsu 210098, China.Study Region: Nianchu River Basin (NRB), a key agricultural area on the Tibetan Plateau in China. Study focus: Runoff is recognized as the most important outcome of water resources management, playing a crucial role in both ecology and hydrology. This study analyzes the spatiotemporal variability of runoff in the NRB over the past 48 years and further quantify the impacts of climate conditions, vegetation cover, and irrigation water withdrawal (IWW) on runoff changes. This study aims to improve our understanding of the mechanisms driving runoff changes in alpine mountains. New hydrological insight for the region: The results indicate that the runoff in the NRB has significantly declined by −0.21 mm per decade. The effects of the various influences on runoff are non-stationary at the spatiotemporal scales, with precipitation (Pre) and temperature (Tmp) as the main factors, and Pre consistently contributing the most to changes in runoff until 2002. However, over time, the contribution of Pre has significantly declined. After 2002, the contribution of Tmp gradually became comparable to that of Pre and eventually surpassed it. IWW extraction generally exerts adverse effects, and in areas with poorer vegetation in NRB, NDVI changes significantly impact runoff. Under the context of global warming and increasing human activities, Tmp and IWW have shown a growing adverse impact on basin runoff, offering new insights for water resource management.http://www.sciencedirect.com/science/article/pii/S2214581825001259Stream runoff of Nianchu RiverInfluencing factorsClimate changeHuman activityQinghai-Tibet Plateau |
| spellingShingle | Zhenhuan Yuan Kaifei Liu Zeng Dan Qize Gao Ciren Mima Chengpeng Lu Runoff spatiotemporal variability driven by climate change and human activity for the Nianchu River Basin in Southwestern Tibet Journal of Hydrology: Regional Studies Stream runoff of Nianchu River Influencing factors Climate change Human activity Qinghai-Tibet Plateau |
| title | Runoff spatiotemporal variability driven by climate change and human activity for the Nianchu River Basin in Southwestern Tibet |
| title_full | Runoff spatiotemporal variability driven by climate change and human activity for the Nianchu River Basin in Southwestern Tibet |
| title_fullStr | Runoff spatiotemporal variability driven by climate change and human activity for the Nianchu River Basin in Southwestern Tibet |
| title_full_unstemmed | Runoff spatiotemporal variability driven by climate change and human activity for the Nianchu River Basin in Southwestern Tibet |
| title_short | Runoff spatiotemporal variability driven by climate change and human activity for the Nianchu River Basin in Southwestern Tibet |
| title_sort | runoff spatiotemporal variability driven by climate change and human activity for the nianchu river basin in southwestern tibet |
| topic | Stream runoff of Nianchu River Influencing factors Climate change Human activity Qinghai-Tibet Plateau |
| url | http://www.sciencedirect.com/science/article/pii/S2214581825001259 |
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