Drought characteristics and propagation under anthropogenic impacts: A regional-scale modelling analysis in four Large Basins of China
Study region: The Songhua River Basin, the Yellow River basin, the Yangtze River basin, and the Pearl River Basin in China. Study focus: Understanding the drought evolution under changing environment is crucial to sustainable water management, especially for China where there are increasing anthropo...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581824004427 |
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| author | Haoran Hao Ningpeng Dong Mingxiang Yang Xin Huang Hejia Wang Hao Wang |
| author_facet | Haoran Hao Ningpeng Dong Mingxiang Yang Xin Huang Hejia Wang Hao Wang |
| author_sort | Haoran Hao |
| collection | DOAJ |
| description | Study region: The Songhua River Basin, the Yellow River basin, the Yangtze River basin, and the Pearl River Basin in China. Study focus: Understanding the drought evolution under changing environment is crucial to sustainable water management, especially for China where there are increasing anthropogenic activities. We employ a national-scale land surface-hydrological model (CLHMS v1.1) with representations of human water management and enhance it with dynamic land use setting to investigate the impact of human activities on the drought regime. We first identify the meteorological droughts and hydrological droughts using Standardized Precipitation Index (SPI) and Standardized Streamflow Index (SSI), respectively. Then, two controlled simulation experiments, namely the human altered scenario and the natural scenario, are designed to analyze the human impact on the drought characterisics and propagation. New hydrological insights for the region: The model accurately simulates the SSI under human impacts, with a correlation coefficient ranging from 0.78 to 0.93. In northern basins, human activities decrease the number of hydrological drought events by 50 %, while increasing their severity, duration, and recovery time. Additionally, human activities have prolonged the average propagation time from meteorological to hydrological droughts by approximately 3.4 months. For southern basins, the impact of human activities on the drought regime is similar to that in northern basins but to a lesser extent. |
| format | Article |
| id | doaj-art-19bfbee04d2d4b53bef45801c72d42da |
| institution | Kabale University |
| issn | 2214-5818 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj-art-19bfbee04d2d4b53bef45801c72d42da2025-01-22T05:41:59ZengElsevierJournal of Hydrology: Regional Studies2214-58182025-02-0157102093Drought characteristics and propagation under anthropogenic impacts: A regional-scale modelling analysis in four Large Basins of ChinaHaoran Hao0Ningpeng Dong1Mingxiang Yang2Xin Huang3Hejia Wang4Hao Wang5State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation, Tianjin University, Tianjin 300072, China; State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, China; Corresponding authors.State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, China; Corresponding authors.Hydrology Bureau of Haihe River Water Conservancy Commission, MWR, Tianjin 300170, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, ChinaStudy region: The Songhua River Basin, the Yellow River basin, the Yangtze River basin, and the Pearl River Basin in China. Study focus: Understanding the drought evolution under changing environment is crucial to sustainable water management, especially for China where there are increasing anthropogenic activities. We employ a national-scale land surface-hydrological model (CLHMS v1.1) with representations of human water management and enhance it with dynamic land use setting to investigate the impact of human activities on the drought regime. We first identify the meteorological droughts and hydrological droughts using Standardized Precipitation Index (SPI) and Standardized Streamflow Index (SSI), respectively. Then, two controlled simulation experiments, namely the human altered scenario and the natural scenario, are designed to analyze the human impact on the drought characterisics and propagation. New hydrological insights for the region: The model accurately simulates the SSI under human impacts, with a correlation coefficient ranging from 0.78 to 0.93. In northern basins, human activities decrease the number of hydrological drought events by 50 %, while increasing their severity, duration, and recovery time. Additionally, human activities have prolonged the average propagation time from meteorological to hydrological droughts by approximately 3.4 months. For southern basins, the impact of human activities on the drought regime is similar to that in northern basins but to a lesser extent.http://www.sciencedirect.com/science/article/pii/S2214581824004427Hydrologic modellingStandardized drought indiceAnthropogenic impactPropagation time |
| spellingShingle | Haoran Hao Ningpeng Dong Mingxiang Yang Xin Huang Hejia Wang Hao Wang Drought characteristics and propagation under anthropogenic impacts: A regional-scale modelling analysis in four Large Basins of China Journal of Hydrology: Regional Studies Hydrologic modelling Standardized drought indice Anthropogenic impact Propagation time |
| title | Drought characteristics and propagation under anthropogenic impacts: A regional-scale modelling analysis in four Large Basins of China |
| title_full | Drought characteristics and propagation under anthropogenic impacts: A regional-scale modelling analysis in four Large Basins of China |
| title_fullStr | Drought characteristics and propagation under anthropogenic impacts: A regional-scale modelling analysis in four Large Basins of China |
| title_full_unstemmed | Drought characteristics and propagation under anthropogenic impacts: A regional-scale modelling analysis in four Large Basins of China |
| title_short | Drought characteristics and propagation under anthropogenic impacts: A regional-scale modelling analysis in four Large Basins of China |
| title_sort | drought characteristics and propagation under anthropogenic impacts a regional scale modelling analysis in four large basins of china |
| topic | Hydrologic modelling Standardized drought indice Anthropogenic impact Propagation time |
| url | http://www.sciencedirect.com/science/article/pii/S2214581824004427 |
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