Attribution analysis of hydrological drought after the impoundment of the Danjiangkou reservoir in the Hanjiang River Basin
Study region: Hanjiang River Basin, China Study focus: Under the joint influences of human activities and climate change, droughts frequently occur in the Hanjiang River Basin (HRB). Quantifying the driving forces contribution on hydrological drought is crucial to enhance the early warning ability....
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581824003872 |
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| author | Cheng Li Yanping Qu Tianliang Jiang Furen Jiang Qianfeng Wang Xuejun Zhang Xiaohua Xu |
| author_facet | Cheng Li Yanping Qu Tianliang Jiang Furen Jiang Qianfeng Wang Xuejun Zhang Xiaohua Xu |
| author_sort | Cheng Li |
| collection | DOAJ |
| description | Study region: Hanjiang River Basin, China Study focus: Under the joint influences of human activities and climate change, droughts frequently occur in the Hanjiang River Basin (HRB). Quantifying the driving forces contribution on hydrological drought is crucial to enhance the early warning ability. This study employed the standardized streamflow index (SSI) to assess hydrological drought. The Soil and Water Assessment Tool (SWAT) model was utilized to reconstruct natural streamflow based on hydrological and meteorological data. By comparing the variations of drought characteristics in simulated and observed scenarios, the impacts of human activities and climate change to hydrological drought were quantified. New hydrological insights for the study region: The SWAT model is capable of effectively simulating the natural streamflow conditions of the HRB with NSE>0.7, R2>0.8, logNSE>0.7 and |PBIAS|<20 %. Hydrological drought has intensified as a prolonged duration and greater severity affected by human activities and climate change. During the whole impact period (1968–2022), the duration and severity increased by 66.22 % and 81.16 % compared to baseline period (1956–1967). The year 1991 is detected as the mutation point. From 1968–1990 climate change has been the main factor in exacerbating hydrological drought. Since 1991, the influence of human activities has gradually exceeded the influence of climate change. These findings provide valuable insights for watershed integrated water resources management and water security. |
| format | Article |
| id | doaj-art-d18a73d5a7d74c82ac60f98d2be46dc1 |
| institution | Kabale University |
| issn | 2214-5818 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj-art-d18a73d5a7d74c82ac60f98d2be46dc12024-12-08T06:10:46ZengElsevierJournal of Hydrology: Regional Studies2214-58182024-12-0156102038Attribution analysis of hydrological drought after the impoundment of the Danjiangkou reservoir in the Hanjiang River BasinCheng Li0Yanping Qu1Tianliang Jiang2Furen Jiang3Qianfeng Wang4Xuejun Zhang5Xiaohua Xu6China Institute of Water Resources and Hydropower Research, Beijing 100038, China; Research Center on Flood and Drought Disaster Reduction, China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaChina Institute of Water Resources and Hydropower Research, Beijing 100038, China; Research Center on Flood and Drought Disaster Reduction, China Institute of Water Resources and Hydropower Research, Beijing 100038, China; Corresponding author at: China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaChina Institute of Water Resources and Hydropower Research, Beijing 100038, China; Research Center on Flood and Drought Disaster Reduction, China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaChina Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaCollege of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian 350116, ChinaChina Institute of Water Resources and Hydropower Research, Beijing 100038, China; Research Center on Flood and Drought Disaster Reduction, China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaJiangxi Academy of Water Science and Engineering, Jiangxi Key Laboratory of Flood and Drought Disaster Defense, ChinaStudy region: Hanjiang River Basin, China Study focus: Under the joint influences of human activities and climate change, droughts frequently occur in the Hanjiang River Basin (HRB). Quantifying the driving forces contribution on hydrological drought is crucial to enhance the early warning ability. This study employed the standardized streamflow index (SSI) to assess hydrological drought. The Soil and Water Assessment Tool (SWAT) model was utilized to reconstruct natural streamflow based on hydrological and meteorological data. By comparing the variations of drought characteristics in simulated and observed scenarios, the impacts of human activities and climate change to hydrological drought were quantified. New hydrological insights for the study region: The SWAT model is capable of effectively simulating the natural streamflow conditions of the HRB with NSE>0.7, R2>0.8, logNSE>0.7 and |PBIAS|<20 %. Hydrological drought has intensified as a prolonged duration and greater severity affected by human activities and climate change. During the whole impact period (1968–2022), the duration and severity increased by 66.22 % and 81.16 % compared to baseline period (1956–1967). The year 1991 is detected as the mutation point. From 1968–1990 climate change has been the main factor in exacerbating hydrological drought. Since 1991, the influence of human activities has gradually exceeded the influence of climate change. These findings provide valuable insights for watershed integrated water resources management and water security.http://www.sciencedirect.com/science/article/pii/S2214581824003872Attribution analysisHydrological droughtSWAT modelThe Hanjiang River |
| spellingShingle | Cheng Li Yanping Qu Tianliang Jiang Furen Jiang Qianfeng Wang Xuejun Zhang Xiaohua Xu Attribution analysis of hydrological drought after the impoundment of the Danjiangkou reservoir in the Hanjiang River Basin Journal of Hydrology: Regional Studies Attribution analysis Hydrological drought SWAT model The Hanjiang River |
| title | Attribution analysis of hydrological drought after the impoundment of the Danjiangkou reservoir in the Hanjiang River Basin |
| title_full | Attribution analysis of hydrological drought after the impoundment of the Danjiangkou reservoir in the Hanjiang River Basin |
| title_fullStr | Attribution analysis of hydrological drought after the impoundment of the Danjiangkou reservoir in the Hanjiang River Basin |
| title_full_unstemmed | Attribution analysis of hydrological drought after the impoundment of the Danjiangkou reservoir in the Hanjiang River Basin |
| title_short | Attribution analysis of hydrological drought after the impoundment of the Danjiangkou reservoir in the Hanjiang River Basin |
| title_sort | attribution analysis of hydrological drought after the impoundment of the danjiangkou reservoir in the hanjiang river basin |
| topic | Attribution analysis Hydrological drought SWAT model The Hanjiang River |
| url | http://www.sciencedirect.com/science/article/pii/S2214581824003872 |
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