Response of soil erosion to climate change and vegetation restoration in the Ganjiang River Basin, China
In the context of global warming it remains challenging to evaluate declining of soil erosion due to ecological engineering measures, and to isolate and quantify the contributions of various factors involved in soil erosion. For this study, soil erosion and soil conservation dynamics in the Ganjiang...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Ecological Indicators |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X23015716 |
| _version_ | 1797385244398059520 |
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| author | Xu He Zimei Miao Yiming Wang Liu Yang Zenxing Zhang |
| author_facet | Xu He Zimei Miao Yiming Wang Liu Yang Zenxing Zhang |
| author_sort | Xu He |
| collection | DOAJ |
| description | In the context of global warming it remains challenging to evaluate declining of soil erosion due to ecological engineering measures, and to isolate and quantify the contributions of various factors involved in soil erosion. For this study, soil erosion and soil conservation dynamics in the Ganjiang River Basin (GRB) in southeast China were quantitatively assessed based on the Integrated Ecosystem Services and Tradeoff Assessment (InVEST) model. Based on the analysis of the attribution factors of precipitation and Fractional Vegetation Cover (FVC), the dominant factors involved in soil erosion were determined by scenario comparison, where the areas with high sensitivity to erosion were quantitatively identified. The results revealed that both simulated value of soil erosion and sediment export initially decreased and then increased from 2000 to 2020; however, the total increases over the last 20 years were 14 % and 18.18 %, respectively. Moreover, the erosion intensity and sediment delivery ratio (SDR) decreased due to the influence of engineering measures such as reservoirs. Precipitation was the dominant factor that affected GRB soil erosion, with its contribution ratio (40 %-60 %) being as high as 94.74 %. In other words, in the GRB, precipitation inhibited the mitigation effect of high vegetation cover on soil erosion, and the contributions of FVC and precipitation showed a vertical trend. The extremely sensitive area caused by FVC is situated in the economically developed cities along the river system in the middle portion of the basin, while the extremely sensitive area caused by precipitation resides in the middle and upper reaches of the western portion of the basin. Based on this, prioritized protection areas can be determined. |
| first_indexed | 2024-03-08T21:51:27Z |
| format | Article |
| id | doaj.art-cff6a999c9774c329faf2c09dc2650f7 |
| institution | Directory Open Access Journal |
| issn | 1470-160X |
| language | English |
| last_indexed | 2024-03-08T21:51:27Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj.art-cff6a999c9774c329faf2c09dc2650f72023-12-20T07:33:50ZengElsevierEcological Indicators1470-160X2024-01-01158111429Response of soil erosion to climate change and vegetation restoration in the Ganjiang River Basin, ChinaXu He0Zimei Miao1Yiming Wang2Liu Yang3Zenxing Zhang4Joint Innovation Center for Modern Forestry Studies, College of Forestry, Nanjing Forestry University, Nanjing 210037, ChinaJoint Innovation Center for Modern Forestry Studies, College of Forestry, Nanjing Forestry University, Nanjing 210037, China; Corresponding author.State Key Laboratory of Hydrology-Water Resources and Hydraulics Engineering, College of Hydrology and Water Resources, Hohai University, Nanjing 210098, ChinaJoint Innovation Center for Modern Forestry Studies, College of Forestry, Nanjing Forestry University, Nanjing 210037, ChinaJoint Innovation Center for Modern Forestry Studies, College of Forestry, Nanjing Forestry University, Nanjing 210037, ChinaIn the context of global warming it remains challenging to evaluate declining of soil erosion due to ecological engineering measures, and to isolate and quantify the contributions of various factors involved in soil erosion. For this study, soil erosion and soil conservation dynamics in the Ganjiang River Basin (GRB) in southeast China were quantitatively assessed based on the Integrated Ecosystem Services and Tradeoff Assessment (InVEST) model. Based on the analysis of the attribution factors of precipitation and Fractional Vegetation Cover (FVC), the dominant factors involved in soil erosion were determined by scenario comparison, where the areas with high sensitivity to erosion were quantitatively identified. The results revealed that both simulated value of soil erosion and sediment export initially decreased and then increased from 2000 to 2020; however, the total increases over the last 20 years were 14 % and 18.18 %, respectively. Moreover, the erosion intensity and sediment delivery ratio (SDR) decreased due to the influence of engineering measures such as reservoirs. Precipitation was the dominant factor that affected GRB soil erosion, with its contribution ratio (40 %-60 %) being as high as 94.74 %. In other words, in the GRB, precipitation inhibited the mitigation effect of high vegetation cover on soil erosion, and the contributions of FVC and precipitation showed a vertical trend. The extremely sensitive area caused by FVC is situated in the economically developed cities along the river system in the middle portion of the basin, while the extremely sensitive area caused by precipitation resides in the middle and upper reaches of the western portion of the basin. Based on this, prioritized protection areas can be determined.http://www.sciencedirect.com/science/article/pii/S1470160X23015716Soil erosionInVEST modelFractional Vegetation Cover(FVC)Ganjiang River Basin, China |
| spellingShingle | Xu He Zimei Miao Yiming Wang Liu Yang Zenxing Zhang Response of soil erosion to climate change and vegetation restoration in the Ganjiang River Basin, China Ecological Indicators Soil erosion InVEST model Fractional Vegetation Cover(FVC) Ganjiang River Basin, China |
| title | Response of soil erosion to climate change and vegetation restoration in the Ganjiang River Basin, China |
| title_full | Response of soil erosion to climate change and vegetation restoration in the Ganjiang River Basin, China |
| title_fullStr | Response of soil erosion to climate change and vegetation restoration in the Ganjiang River Basin, China |
| title_full_unstemmed | Response of soil erosion to climate change and vegetation restoration in the Ganjiang River Basin, China |
| title_short | Response of soil erosion to climate change and vegetation restoration in the Ganjiang River Basin, China |
| title_sort | response of soil erosion to climate change and vegetation restoration in the ganjiang river basin china |
| topic | Soil erosion InVEST model Fractional Vegetation Cover(FVC) Ganjiang River Basin, China |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X23015716 |
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