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本文以野外调查和室内图面量算获得的资料数字为依据,分析了有限范围内小流域土壤侵蚀的成因,并以函数关系式E=f(J·ρ·C·S)表示土壤侵蚀与侵蚀诸因子间的关系。通过各因子与侵蚀模数的单因子相关分析,发现地形比降、侵蚀沟密度、活动沟头数、坡面被覆、流域面积与其关系密切,而林地被覆、塬面治理度则相反。寻其原因,主要是由于当前各种水土保持措施数量少、标准低、质量差、不配套等造成的。
Based on the data obtained from field surveys and indoor surface measurements, the paper analyzes the causes of soil erosion in small watersheds within a limited range and expresses the relationship between soil erosion and soil erosion with the function E = f (J · ρ · C · S) Erosion between the various factors. Through the single-factor correlation analysis of each factor and erosion modulus, it is found that the topography ratio, the density of erosion ditch, the number of moving ditch, the coverage of slope and the drainage area are closely related to each other. The reason for this is mainly due to the current lack of a variety of soil and water conservation measures, low standards, poor quality, not supporting such caused.