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[1]LI Cuiman,LU Yuan,LIU Bintao,et al.Estimation and Characteristics Analysis of Soil Erosion in Xijiang River Basin of Guangxi[J].Research of Soil and Water Conservation,2018,25(02):34-39.

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Estimation and Characteristics Analysis of Soil Erosion in Xijiang River Basin of Guangxi

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 02 Page number: 34-39 Column: Public date: 2018-04-03

Title:: Estimation and Characteristics Analysis of Soil Erosion in Xijiang River Basin of Guangxi

Author(s):: LI Cuiman¹, LU Yuan¹, LIU Bintao², XU Guilin³; 1. Geography and Planing Institute, Guangxi Teachers Education University, Nanning 530001, China;
2. Institute of Mountain Hazards and Environment, CAS, Chengdu 610041, China;
3. Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Guangxi Teachers Education University, Nanning 530001, China

Keywords:: Guangxi; Xijiang River Basin; correction factor; USLE model; spatial distribution

CLC:: S157.1

DOI:: -

Abstract:: The Xijiang River Basin accounts for 85.7% of the total land area of Guangxi. In the basin, the carbonate rocks are exposed to large areas and the terrain is complex. soil and water loss is an important ecological environment problem in the Xijiang River Basin, which has an important impact on the ecological security of Guangxi and the Pearl River Delta of China. Therefore, this paper introduces correction factor based on the USLE model and establishes the soil loss equation in Xijiang River Basin as follow:A=R×K×LS×C×P×M. This equation was used to quantitatively examine the spatial distribution of soil erosion. The results of the model are compared and analyzed based on hydrological data and related research results. The results show that:the soil erosion modulus calculated by the model is consistent with the results of hydrological data, and is close to the relevant research results; in 2015, the average soil erosion modulus of Xijiang River in Guangxi was 135.22 t/(km²·a), and the total annual soil erosion was 27.377 2 million t/a; slope land is the main source of soil erosion, and the slopes with the gradients of 8°~25° are the prone areas of soil erosion. These results can provide the references for the soil and water conservation and the construction of ecological civilization in Guangxi and the Pearl River Basin.

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