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Article

Estimation of Soil Erosion and Evaluation of Soil and Water Conservation Benefit in Terraces under Extreme Precipitation

by 1, 1, 1,2,*, 1,2, 1,2, 1,2 and 3
1
Institute of Soil and Water Conservation, Northwest A&F University, Xianyang 712100, China
2
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Xianyang 712100, China
3
Soil and Water Conservation Monitoring Center, Haihe Basin, Tianjin 300170, China
*
Author to whom correspondence should be addressed.
Academic Editor: Nektarios N. Kourgialas
Water 2022, 14(11), 1675; https://doi.org/10.3390/w14111675
Received: 18 March 2022 / Revised: 12 May 2022 / Accepted: 19 May 2022 / Published: 24 May 2022
In recent years, soil erosion caused by water erosion has gradually increased due to the increase of extreme precipitation. In order to reduce soil erosion caused by extreme precipitation, it is necessary to monitor soil erosion and found out the factors that affect soil erosion under extreme precipitation. The objective of this study was to assess the amount of soil erosion, the damage degree of soil and water conservation measures and benefit evaluation under extreme precipitation in Henan Province. The results indicated that the ridges of terraces in two small watersheds had been damaged to varying degrees. Terraces, as one of soil and water conservation measures, can better preserve soil and water erosion under extreme precipitation. The amount of soil preserved in two small watersheds were 744.50t and 1121.01t. The amount of soil loss in two small watersheds were reduced by 67.67% and 78.63% when terraces existed. The soil conservation amount of vegetation restoration measures in two small watersheds were 2960.23t and 3320.36t. The amount of soil loss in two small watersheds were reduced by 89.27% and 90.98%, when vegetation restoration measures exist. Compared with soil and water conservation engineering measures, vegetation restoration measures can better reduce soil erosion caused by water erosion under extreme precipitation. In addition to the amount of rainfall, the soil and water conservation benefits of terraces were also affected by the width of the terrace, the slope of the terrace, and whether there were vegetation restoration measures in the terrace. View Full-Text
Keywords: terraces; extreme precipitation; CLSE model; benefits of soil and water conservation terraces; extreme precipitation; CLSE model; benefits of soil and water conservation
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MDPI and ACS Style

Jia, H.; Wang, X.; Sun, W.; Mu, X.; Gao, P.; Zhao, G.; Li, Z. Estimation of Soil Erosion and Evaluation of Soil and Water Conservation Benefit in Terraces under Extreme Precipitation. Water 2022, 14, 1675. https://doi.org/10.3390/w14111675

AMA Style

Jia H, Wang X, Sun W, Mu X, Gao P, Zhao G, Li Z. Estimation of Soil Erosion and Evaluation of Soil and Water Conservation Benefit in Terraces under Extreme Precipitation. Water. 2022; 14(11):1675. https://doi.org/10.3390/w14111675

Chicago/Turabian Style

Jia, Hao, Xidong Wang, Wenyi Sun, Xingmin Mu, Peng Gao, Guangju Zhao, and Zixuan Li. 2022. "Estimation of Soil Erosion and Evaluation of Soil and Water Conservation Benefit in Terraces under Extreme Precipitation" Water 14, no. 11: 1675. https://doi.org/10.3390/w14111675

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