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通过对黄土高原沟壑区地形因子与土壤侵蚀模数相关性分析，结果表明：相对高差对侵蚀模数的影响最大，其次为坡度、面积、坡长及裸地面积所占流域面积的比值
The results showed that the relative height difference had the greatest influence on the modulus of erosion, followed by the ratio of slope area, slope length and bare land area to the drainage area