[Objective] The aim was to research soil erosion in boundary areas of Dongchuan City and Huize County in Yunnan Province through quantitative analysis on factors influencing soil erosion and establishment of conceptua...[Objective] The aim was to research soil erosion in boundary areas of Dongchuan City and Huize County in Yunnan Province through quantitative analysis on factors influencing soil erosion and establishment of conceptual model, providing method for land use and treatment of soil erosion. [Method] Based on Universal Soil Loss Equation （USLE）, quantitative indices determined and the conceptual model of of six factors influencing soil erosion were soil erosion was established. In addition. pixel-loss map was obtained through multiplication and soil erosive areas and the treatment schemes were proposed through statistical work of pixel-loss map and soil erosion map. [Result] In the research, annual loss modulus averaged 5 962 t/hm2, indicating the area was heavily eroded; from soil erosion map, it can be concluded that the heavily erosive area was near rivers, where wasteland and bare land dominated with slope of 30°-40° and without protective measures. [Conclusion] The research indicated that land use in the area is unreasonable erosive region should be paid more attention. In addition, the to be changed into terrace cultivation. and 51.6% of heavily wasteland is suggested to be changed into terrace cultivation.展开更多
文摘[Objective] The aim was to research soil erosion in boundary areas of Dongchuan City and Huize County in Yunnan Province through quantitative analysis on factors influencing soil erosion and establishment of conceptual model, providing method for land use and treatment of soil erosion. [Method] Based on Universal Soil Loss Equation （USLE）, quantitative indices determined and the conceptual model of of six factors influencing soil erosion were soil erosion was established. In addition. pixel-loss map was obtained through multiplication and soil erosive areas and the treatment schemes were proposed through statistical work of pixel-loss map and soil erosion map. [Result] In the research, annual loss modulus averaged 5 962 t/hm2, indicating the area was heavily eroded; from soil erosion map, it can be concluded that the heavily erosive area was near rivers, where wasteland and bare land dominated with slope of 30°-40° and without protective measures. [Conclusion] The research indicated that land use in the area is unreasonable erosive region should be paid more attention. In addition, the to be changed into terrace cultivation. and 51.6% of heavily wasteland is suggested to be changed into terrace cultivation.
