Improvement of land surface vegetation ecology inhibited precipitation-triggered soil erosion in the alpine-cold river source area – A case study in Southern Gansu, China
Study region: Southern Gansu Plateau (SGP), located in the northeastern region of the Qinghai-Tibet Plateau, is a representative alpine-cold water source area for China’s large rivers, such as the Yellow River and Yangtze River. Study focus: Identifying the contributions of dominant factors to the r...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | Journal of Hydrology: Regional Studies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581823003014 |
| _version_ | 1797342208392691712 |
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| author | Xuhong Xie Changbin Li Lei Wu Zuqiao Gao Yifei Wang Na Shen Xuan Zhou Xuyang Zhang Meijing Li |
| author_facet | Xuhong Xie Changbin Li Lei Wu Zuqiao Gao Yifei Wang Na Shen Xuan Zhou Xuyang Zhang Meijing Li |
| author_sort | Xuhong Xie |
| collection | DOAJ |
| description | Study region: Southern Gansu Plateau (SGP), located in the northeastern region of the Qinghai-Tibet Plateau, is a representative alpine-cold water source area for China’s large rivers, such as the Yellow River and Yangtze River. Study focus: Identifying the contributions of dominant factors to the regional soil erosion rate (A) is important for understanding the environmental processes and benefits of water and soil conservation, although related studies have seldom been conducted in alpine-cold regions such as the SGP. Accordingly, the main objectives of this study are (1) to determine the spatiotemporal dynamics of soil erosion and its driving factors in the SGP area; (2) to quantify the relationship between the main influential factors and soil erosion; and (3) to separate the contributions of the above factors to variations in regional soil erosion on the SGP. New hydrological insights for the region: The multiyear average regional A for the SGP region was calculated as 24.18 t·hm−2·a−1, corresponding to an overall low intensity of regional soil erosion. The contributions of various time-varying factors, such as rainfall, vegetation cover, and conservation practices, to the reduction in A were −20.01%, 81.07%, and 21.95%, respectively, indicating that the improvement in land surface vegetation ecology dominated the decrease in A under the background of climate warming. The findings are expected to contribute to soil and water conservation in alpine-cold river source regions. |
| first_indexed | 2024-03-08T10:29:57Z |
| format | Article |
| id | doaj.art-dcd0ad3c730248b682f46c960925002f |
| institution | Directory Open Access Journal |
| issn | 2214-5818 |
| language | English |
| last_indexed | 2024-03-08T10:29:57Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj.art-dcd0ad3c730248b682f46c960925002f2024-01-27T06:54:56ZengElsevierJournal of Hydrology: Regional Studies2214-58182024-02-0151101614Improvement of land surface vegetation ecology inhibited precipitation-triggered soil erosion in the alpine-cold river source area – A case study in Southern Gansu, ChinaXuhong Xie0Changbin Li1Lei Wu2Zuqiao Gao3Yifei Wang4Na Shen5Xuan Zhou6Xuyang Zhang7Meijing Li8MOE Key Laboratory of Western China’s Environmental Systems, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, ChinaCorrespondence to: No. 222 South Tianshui Road, Chengguan District, Lanzhou, Gansu Province 730000, China.; MOE Key Laboratory of Western China’s Environmental Systems, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, ChinaMOE Key Laboratory of Western China’s Environmental Systems, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, ChinaMOE Key Laboratory of Western China’s Environmental Systems, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, ChinaMOE Key Laboratory of Western China’s Environmental Systems, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, ChinaMOE Key Laboratory of Western China’s Environmental Systems, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, ChinaMOE Key Laboratory of Western China’s Environmental Systems, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, ChinaMOE Key Laboratory of Western China’s Environmental Systems, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, ChinaMOE Key Laboratory of Western China’s Environmental Systems, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, ChinaStudy region: Southern Gansu Plateau (SGP), located in the northeastern region of the Qinghai-Tibet Plateau, is a representative alpine-cold water source area for China’s large rivers, such as the Yellow River and Yangtze River. Study focus: Identifying the contributions of dominant factors to the regional soil erosion rate (A) is important for understanding the environmental processes and benefits of water and soil conservation, although related studies have seldom been conducted in alpine-cold regions such as the SGP. Accordingly, the main objectives of this study are (1) to determine the spatiotemporal dynamics of soil erosion and its driving factors in the SGP area; (2) to quantify the relationship between the main influential factors and soil erosion; and (3) to separate the contributions of the above factors to variations in regional soil erosion on the SGP. New hydrological insights for the region: The multiyear average regional A for the SGP region was calculated as 24.18 t·hm−2·a−1, corresponding to an overall low intensity of regional soil erosion. The contributions of various time-varying factors, such as rainfall, vegetation cover, and conservation practices, to the reduction in A were −20.01%, 81.07%, and 21.95%, respectively, indicating that the improvement in land surface vegetation ecology dominated the decrease in A under the background of climate warming. The findings are expected to contribute to soil and water conservation in alpine-cold river source regions.http://www.sciencedirect.com/science/article/pii/S2214581823003014Soil erosionVariationRUSLEContributionSouthern Gansu Plateau |
| spellingShingle | Xuhong Xie Changbin Li Lei Wu Zuqiao Gao Yifei Wang Na Shen Xuan Zhou Xuyang Zhang Meijing Li Improvement of land surface vegetation ecology inhibited precipitation-triggered soil erosion in the alpine-cold river source area – A case study in Southern Gansu, China Journal of Hydrology: Regional Studies Soil erosion Variation RUSLE Contribution Southern Gansu Plateau |
| title | Improvement of land surface vegetation ecology inhibited precipitation-triggered soil erosion in the alpine-cold river source area – A case study in Southern Gansu, China |
| title_full | Improvement of land surface vegetation ecology inhibited precipitation-triggered soil erosion in the alpine-cold river source area – A case study in Southern Gansu, China |
| title_fullStr | Improvement of land surface vegetation ecology inhibited precipitation-triggered soil erosion in the alpine-cold river source area – A case study in Southern Gansu, China |
| title_full_unstemmed | Improvement of land surface vegetation ecology inhibited precipitation-triggered soil erosion in the alpine-cold river source area – A case study in Southern Gansu, China |
| title_short | Improvement of land surface vegetation ecology inhibited precipitation-triggered soil erosion in the alpine-cold river source area – A case study in Southern Gansu, China |
| title_sort | improvement of land surface vegetation ecology inhibited precipitation triggered soil erosion in the alpine cold river source area a case study in southern gansu china |
| topic | Soil erosion Variation RUSLE Contribution Southern Gansu Plateau |
| url | http://www.sciencedirect.com/science/article/pii/S2214581823003014 |
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