Impacts of small and medium-sized reservoirs on streamflow in two basins of Southeast China, using a hydrological model to separate influences of multiple drivers
Study region: Southeast coast of China Study focus: The reservoirs in southeast coast of China are mostly small due to the limitations of terrain. In order to analyze the impact of these densely distributed small and medium-sized reservoirs (SMRs) with lacking observation and operational data on run...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581823002690 |
| _version_ | 1827583755239292928 |
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| author | Xie Yan Bingqing Lin Xingwei Chen Huaxia Yao Weifang Ruan Xiaocheng Li |
| author_facet | Xie Yan Bingqing Lin Xingwei Chen Huaxia Yao Weifang Ruan Xiaocheng Li |
| author_sort | Xie Yan |
| collection | DOAJ |
| description | Study region: Southeast coast of China Study focus: The reservoirs in southeast coast of China are mostly small due to the limitations of terrain. In order to analyze the impact of these densely distributed small and medium-sized reservoirs (SMRs) with lacking observation and operational data on runoff, this paper uses a hydrological model & scenario simulation method to separate the impacts of climate variability (CV), land use change (LUC) and SMRs group change on streamflow variation in two river basins of Southeast China. New hydrological insights for the region: (1) The streamflow of two basins has changed greatly, with CV and SMRs change being the main influencing factors, while the impact of LUC was relatively small. The contribution rates of CV to the annual runoff change of three hydrological stations in two river basins were 90.19%, 61.75% and 26.64%; Contribution rates of SMRs changes were 9.34%, 37.24% and 71.04%, correspondingly. (2) The regulation of streamflow by SMRs changes led to a decrease in both annual and monthly runoff, which was due to the fact that the main functions of SMRs in this region are agricultural irrigation and domestic water supply. (3) The three-factor separation method based on hydrological modeling, which separated the cumulative effects of SMRs in the form of SMRs group, would be valuable for the study and management of watersheds with numerous SMRs and lack of observation and operational data. |
| first_indexed | 2024-03-08T23:12:20Z |
| format | Article |
| id | doaj.art-3c3aede0ca944c9ba2393815cf56c8c0 |
| institution | Directory Open Access Journal |
| issn | 2214-5818 |
| language | English |
| last_indexed | 2024-03-08T23:12:20Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj.art-3c3aede0ca944c9ba2393815cf56c8c02023-12-15T07:24:19ZengElsevierJournal of Hydrology: Regional Studies2214-58182023-12-0150101582Impacts of small and medium-sized reservoirs on streamflow in two basins of Southeast China, using a hydrological model to separate influences of multiple driversXie Yan0Bingqing Lin1Xingwei Chen2Huaxia Yao3Weifang Ruan4Xiaocheng Li5School of Geographical Science, Fujian Normal University, Fuzhou 350117, China; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Resources and Environmental Sciences, Quanzhou Normal University, Quanzhou 362000, ChinaSchool of Geographical Science, Fujian Normal University, Fuzhou 350117, China; Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education, Fuzhou 350117, China; Corresponding author at: School of Geographical Science, Fujian Normal University, Fuzhou 350117, China.Department of Geography, Nipissing University, North Bay, Ontario, CanadaFujian Institute of Water Resources and Hydropower Research, Fuzhou 350001, ChinaFujian Institute of Water Resources and Hydropower Research, Fuzhou 350001, ChinaStudy region: Southeast coast of China Study focus: The reservoirs in southeast coast of China are mostly small due to the limitations of terrain. In order to analyze the impact of these densely distributed small and medium-sized reservoirs (SMRs) with lacking observation and operational data on runoff, this paper uses a hydrological model & scenario simulation method to separate the impacts of climate variability (CV), land use change (LUC) and SMRs group change on streamflow variation in two river basins of Southeast China. New hydrological insights for the region: (1) The streamflow of two basins has changed greatly, with CV and SMRs change being the main influencing factors, while the impact of LUC was relatively small. The contribution rates of CV to the annual runoff change of three hydrological stations in two river basins were 90.19%, 61.75% and 26.64%; Contribution rates of SMRs changes were 9.34%, 37.24% and 71.04%, correspondingly. (2) The regulation of streamflow by SMRs changes led to a decrease in both annual and monthly runoff, which was due to the fact that the main functions of SMRs in this region are agricultural irrigation and domestic water supply. (3) The three-factor separation method based on hydrological modeling, which separated the cumulative effects of SMRs in the form of SMRs group, would be valuable for the study and management of watersheds with numerous SMRs and lack of observation and operational data.http://www.sciencedirect.com/science/article/pii/S2214581823002690Small and medium-sized reservoirsClimate variabilityLand use changeStreamflow variationSWAT model |
| spellingShingle | Xie Yan Bingqing Lin Xingwei Chen Huaxia Yao Weifang Ruan Xiaocheng Li Impacts of small and medium-sized reservoirs on streamflow in two basins of Southeast China, using a hydrological model to separate influences of multiple drivers Journal of Hydrology: Regional Studies Small and medium-sized reservoirs Climate variability Land use change Streamflow variation SWAT model |
| title | Impacts of small and medium-sized reservoirs on streamflow in two basins of Southeast China, using a hydrological model to separate influences of multiple drivers |
| title_full | Impacts of small and medium-sized reservoirs on streamflow in two basins of Southeast China, using a hydrological model to separate influences of multiple drivers |
| title_fullStr | Impacts of small and medium-sized reservoirs on streamflow in two basins of Southeast China, using a hydrological model to separate influences of multiple drivers |
| title_full_unstemmed | Impacts of small and medium-sized reservoirs on streamflow in two basins of Southeast China, using a hydrological model to separate influences of multiple drivers |
| title_short | Impacts of small and medium-sized reservoirs on streamflow in two basins of Southeast China, using a hydrological model to separate influences of multiple drivers |
| title_sort | impacts of small and medium sized reservoirs on streamflow in two basins of southeast china using a hydrological model to separate influences of multiple drivers |
| topic | Small and medium-sized reservoirs Climate variability Land use change Streamflow variation SWAT model |
| url | http://www.sciencedirect.com/science/article/pii/S2214581823002690 |
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