Analysis of the Characteristics and Contribution Rate of Base Flow in Typical Basins of the Loess Plateau
[Objective] This study examines the impact of climate change and human activities on baseflow variability across four representative watersheds within the Loess Plateau: the Wuding River, Kuye River, Yan River, and Tutai River. [Methods] Utilizing daily flow data from 1965 to 2017 for the Wuding, Ku...
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Editorial Department of Journal of Soil and Water Conservation
2024-10-01
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| Series: | Shuitu Baochi Xuebao |
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| Online Access: | http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20240509 |
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| author | ZHANG Jiyuan YU Kunxia LI Zhanbin LI Peng LIU Yonggang MO Shuhong ZHAO Binhua YANG Jianhong JIA Lu LI Xue |
| author_facet | ZHANG Jiyuan YU Kunxia LI Zhanbin LI Peng LIU Yonggang MO Shuhong ZHAO Binhua YANG Jianhong JIA Lu LI Xue |
| author_sort | ZHANG Jiyuan |
| collection | DOAJ |
| description | [Objective] This study examines the impact of climate change and human activities on baseflow variability across four representative watersheds within the Loess Plateau: the Wuding River, Kuye River, Yan River, and Tutai River. [Methods] Utilizing daily flow data from 1965 to 2017 for the Wuding, Kuye, and Yan rivers, and from 1983 to 2017 for the Tutai River, alongside multi-site meteorological data, we evaluated the applicability of nine baseflow separation methods and characterized baseflow variations. Contributions of climate change and human activities to baseflow changes were quantified using the elasticity coefficient method within the Budyko framework. [Results] The F4 digital filtering method exhibited superior performance in terms of stability, dispersion, and error metrics, making it the most suitable method for the typical watersheds of the Loess Plateau. Trends in annual baseflow depth, annual runoff depth, and annual baseflow index were consistent across the four watersheds, with multi-year average baseflow indices (BFI) of 0.64, 0.42, 0.28, and 0.49, respectively. Significant decreasing trends (p<0.01) were observed in both annual baseflow depth and runoff depth, while the annual baseflow index showed increasing trends. The contributions of precipitation, potential evapotranspiration, and human activities to the changes in baseflow ranged from -56.72% to 33.92%, -0.81% to 55.16%, and 10.92% to 104.37%, respectively. [Conclusion] The findings underscore that human activities are the principal drivers influencing baseflow evolution in the Loess Plateau area, offering theoretical support for integrated water resource management in the region. |
| format | Article |
| id | doaj-art-c0e4eb0c8c8b4f5fa89d23d2d6d9728c |
| institution | OA Journals |
| issn | 1009-2242 |
| language | zho |
| publishDate | 2024-10-01 |
| publisher | Editorial Department of Journal of Soil and Water Conservation |
| record_format | Article |
| series | Shuitu Baochi Xuebao |
| spelling | doaj-art-c0e4eb0c8c8b4f5fa89d23d2d6d9728c2025-08-20T02:00:09ZzhoEditorial Department of Journal of Soil and Water ConservationShuitu Baochi Xuebao1009-22422024-10-01385829110.13870/j.cnki.stbcxb.2024.05.0141009-2242-(2024)05-0082-10Analysis of the Characteristics and Contribution Rate of Base Flow in Typical Basins of the Loess PlateauZHANG Jiyuan0YU Kunxia1LI Zhanbin2LI Peng3LIU Yonggang4MO Shuhong5ZHAO Binhua6YANG Jianhong7JIA Lu8LI Xue9State Key Laboratory of Ecological Water Resour in Northwest Arid Zone, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory of Ecological Water Resour in Northwest Arid Zone, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory of Ecological Water Resour in Northwest Arid Zone, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory of Ecological Water Resour in Northwest Arid Zone, Xi’an University of Technology, Xi’an 710048, ChinaShaanxi Provincial Water Resources and River Reservoir Dispatching Center, Xi’an 710004, ChinaState Key Laboratory of Ecological Water Resour in Northwest Arid Zone, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory of Ecological Water Resour in Northwest Arid Zone, Xi’an University of Technology, Xi’an 710048, ChinaShaanxi Provincial Water Resources and River Reservoir Dispatching Center, Xi’an 710004, ChinaState Key Laboratory of Ecological Water Resour in Northwest Arid Zone, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory of Ecological Water Resour in Northwest Arid Zone, Xi’an University of Technology, Xi’an 710048, China[Objective] This study examines the impact of climate change and human activities on baseflow variability across four representative watersheds within the Loess Plateau: the Wuding River, Kuye River, Yan River, and Tutai River. [Methods] Utilizing daily flow data from 1965 to 2017 for the Wuding, Kuye, and Yan rivers, and from 1983 to 2017 for the Tutai River, alongside multi-site meteorological data, we evaluated the applicability of nine baseflow separation methods and characterized baseflow variations. Contributions of climate change and human activities to baseflow changes were quantified using the elasticity coefficient method within the Budyko framework. [Results] The F4 digital filtering method exhibited superior performance in terms of stability, dispersion, and error metrics, making it the most suitable method for the typical watersheds of the Loess Plateau. Trends in annual baseflow depth, annual runoff depth, and annual baseflow index were consistent across the four watersheds, with multi-year average baseflow indices (BFI) of 0.64, 0.42, 0.28, and 0.49, respectively. Significant decreasing trends (p<0.01) were observed in both annual baseflow depth and runoff depth, while the annual baseflow index showed increasing trends. The contributions of precipitation, potential evapotranspiration, and human activities to the changes in baseflow ranged from -56.72% to 33.92%, -0.81% to 55.16%, and 10.92% to 104.37%, respectively. [Conclusion] The findings underscore that human activities are the principal drivers influencing baseflow evolution in the Loess Plateau area, offering theoretical support for integrated water resource management in the region.http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20240509baseflow variationclimatic changehuman activitybudyko theorycontribution rate |
| spellingShingle | ZHANG Jiyuan YU Kunxia LI Zhanbin LI Peng LIU Yonggang MO Shuhong ZHAO Binhua YANG Jianhong JIA Lu LI Xue Analysis of the Characteristics and Contribution Rate of Base Flow in Typical Basins of the Loess Plateau Shuitu Baochi Xuebao baseflow variation climatic change human activity budyko theory contribution rate |
| title | Analysis of the Characteristics and Contribution Rate of Base Flow in Typical Basins of the Loess Plateau |
| title_full | Analysis of the Characteristics and Contribution Rate of Base Flow in Typical Basins of the Loess Plateau |
| title_fullStr | Analysis of the Characteristics and Contribution Rate of Base Flow in Typical Basins of the Loess Plateau |
| title_full_unstemmed | Analysis of the Characteristics and Contribution Rate of Base Flow in Typical Basins of the Loess Plateau |
| title_short | Analysis of the Characteristics and Contribution Rate of Base Flow in Typical Basins of the Loess Plateau |
| title_sort | analysis of the characteristics and contribution rate of base flow in typical basins of the loess plateau |
| topic | baseflow variation climatic change human activity budyko theory contribution rate |
| url | http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20240509 |
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