On the hydrological changes and their attribution analyses in the Dongting Lake Region in the past 60 years
Study region: The Dongting Lake Region (DLR) of the middle Yangtze River, China. Study focus: The controlling mechanism of the hydrological changes in the DLR is still unclear, though which are of great concern for ecological environment and water resources management. The runoff coefficient (Rc) of...
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Elsevier
2025-06-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581825002538 |
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| author | Pan Wu Lan Zeng Xiaoyu Zhu Yanpeng Zhang Pan Xiao Xinwen Zhao Qinghua Li Cong Jiang Lin Chen Xiaolang Zhang |
| author_facet | Pan Wu Lan Zeng Xiaoyu Zhu Yanpeng Zhang Pan Xiao Xinwen Zhao Qinghua Li Cong Jiang Lin Chen Xiaolang Zhang |
| author_sort | Pan Wu |
| collection | DOAJ |
| description | Study region: The Dongting Lake Region (DLR) of the middle Yangtze River, China. Study focus: The controlling mechanism of the hydrological changes in the DLR is still unclear, though which are of great concern for ecological environment and water resources management. The runoff coefficient (Rc) of DLR and water level (wl) at the Chenglingji station were selected to represent hydrological changes. The changes of climate(E0,P,I,T), runoff(Q) and river channel characteristics change(Bias) were evaluated and then taken into considered in attribution analyses. Finally, the contribution of each factor to hydrological changes was quantified. New hydrological insights for the region: The runoff coefficient Rc increased by 45.37 % (from 0.34 to 0.50) in period 2012–2020 related to period 1961–1997 and the wl raised since 1980, which increased 1.12 m in period 1983–2020 related to period 1961–1982. The wl is mainly controlled by river channel characteristics change induced by sediment load changes (Biasclj), precipitation intensity (I), runoff of Jianli station (Qjl) and runoff from the four river (Qfr), the dominant factors are Biasclj and Qjl.The Rc is mainly controlled by precipitation intensity I, Qjl and Qfr, the dominant factors are I and Qjl. The change of Qjl not only contributes to wl change but also to Rc change. In addition, the impacts of Qjl on Rc may be related to the groundwater interactions between the main channel and DLR. |
| format | Article |
| id | doaj-art-55852a3046024a2fa67912d12c229f31 |
| institution | Kabale University |
| issn | 2214-5818 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj-art-55852a3046024a2fa67912d12c229f312025-08-20T03:47:32ZengElsevierJournal of Hydrology: Regional Studies2214-58182025-06-015910242810.1016/j.ejrh.2025.102428On the hydrological changes and their attribution analyses in the Dongting Lake Region in the past 60 yearsPan Wu0Lan Zeng1Xiaoyu Zhu2Yanpeng Zhang3Pan Xiao4Xinwen Zhao5Qinghua Li6Cong Jiang7Lin Chen8Xiaolang Zhang9Wuhan Center, China Geological Survey (Geosciences Innovation Center of Central South China), Wuhan 430205, China; Key Laboratory of Eco-hydrogeological Process of River and Lake Wetlands in Changjiang Reaches, China Geological Survey, Wuhan 430205, ChinaSchool of Geosciences and Info-Physics, Central South University, Changsha, China; Correspondence to: School of Geosciences and Info-Physics, Central South University, Changsha, 410083, China.Wuhan Center, China Geological Survey (Geosciences Innovation Center of Central South China), Wuhan 430205, ChinaWuhan Center, China Geological Survey (Geosciences Innovation Center of Central South China), Wuhan 430205, China; Key Laboratory of Eco-hydrogeological Process of River and Lake Wetlands in Changjiang Reaches, China Geological Survey, Wuhan 430205, ChinaWuhan Center, China Geological Survey (Geosciences Innovation Center of Central South China), Wuhan 430205, China; Key Laboratory of Eco-hydrogeological Process of River and Lake Wetlands in Changjiang Reaches, China Geological Survey, Wuhan 430205, ChinaWuhan Center, China Geological Survey (Geosciences Innovation Center of Central South China), Wuhan 430205, China; Key Laboratory of Eco-hydrogeological Process of River and Lake Wetlands in Changjiang Reaches, China Geological Survey, Wuhan 430205, ChinaWuhan Center, China Geological Survey (Geosciences Innovation Center of Central South China), Wuhan 430205, China; Key Laboratory of Eco-hydrogeological Process of River and Lake Wetlands in Changjiang Reaches, China Geological Survey, Wuhan 430205, ChinaSchool of Environmental Studies, China University of Geosciences, Wuhan, ChinaDepartment of Environmental Sciences, University of California, Riverside, CA 92521, USA; State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment Resources, CAS, Lanzhou 730000, ChinaDepartment of Geosciences, Florida Atlantic University, Boca Raton, FL 33431, USAStudy region: The Dongting Lake Region (DLR) of the middle Yangtze River, China. Study focus: The controlling mechanism of the hydrological changes in the DLR is still unclear, though which are of great concern for ecological environment and water resources management. The runoff coefficient (Rc) of DLR and water level (wl) at the Chenglingji station were selected to represent hydrological changes. The changes of climate(E0,P,I,T), runoff(Q) and river channel characteristics change(Bias) were evaluated and then taken into considered in attribution analyses. Finally, the contribution of each factor to hydrological changes was quantified. New hydrological insights for the region: The runoff coefficient Rc increased by 45.37 % (from 0.34 to 0.50) in period 2012–2020 related to period 1961–1997 and the wl raised since 1980, which increased 1.12 m in period 1983–2020 related to period 1961–1982. The wl is mainly controlled by river channel characteristics change induced by sediment load changes (Biasclj), precipitation intensity (I), runoff of Jianli station (Qjl) and runoff from the four river (Qfr), the dominant factors are Biasclj and Qjl.The Rc is mainly controlled by precipitation intensity I, Qjl and Qfr, the dominant factors are I and Qjl. The change of Qjl not only contributes to wl change but also to Rc change. In addition, the impacts of Qjl on Rc may be related to the groundwater interactions between the main channel and DLR.http://www.sciencedirect.com/science/article/pii/S2214581825002538Dongting Lake RegionWater level changeAttribution analysisFlow rating curvesRiverbed deformation |
| spellingShingle | Pan Wu Lan Zeng Xiaoyu Zhu Yanpeng Zhang Pan Xiao Xinwen Zhao Qinghua Li Cong Jiang Lin Chen Xiaolang Zhang On the hydrological changes and their attribution analyses in the Dongting Lake Region in the past 60 years Journal of Hydrology: Regional Studies Dongting Lake Region Water level change Attribution analysis Flow rating curves Riverbed deformation |
| title | On the hydrological changes and their attribution analyses in the Dongting Lake Region in the past 60 years |
| title_full | On the hydrological changes and their attribution analyses in the Dongting Lake Region in the past 60 years |
| title_fullStr | On the hydrological changes and their attribution analyses in the Dongting Lake Region in the past 60 years |
| title_full_unstemmed | On the hydrological changes and their attribution analyses in the Dongting Lake Region in the past 60 years |
| title_short | On the hydrological changes and their attribution analyses in the Dongting Lake Region in the past 60 years |
| title_sort | on the hydrological changes and their attribution analyses in the dongting lake region in the past 60 years |
| topic | Dongting Lake Region Water level change Attribution analysis Flow rating curves Riverbed deformation |
| url | http://www.sciencedirect.com/science/article/pii/S2214581825002538 |
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