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文章根据志丹县1970-1987年的降雨过程资料(缺少1977年),对志丹县降雨侵蚀力(R)及其特征进行了研究和分析。研究结果表明,研究区降雨侵蚀力变幅巨大,主要集中在6月-9月,年降雨侵蚀力值变幅均较大,其离差系数Cv为1.135;研究区次降雨量与次降雨侵蚀力、月降雨量与月降雨侵蚀力、年降雨量与年降雨侵蚀力均呈立方关系。
Based on the rainfall data from 1970 to 1987 in Zhidan County (lack of 1977), this paper studied and analyzed the rainfall erosivity (R) and its characteristics in Zhidan County. The results show that the rainfall erosivity in the study area fluctuates greatly, mainly from June to September, and the annual rainfall erosivity values vary greatly with a Cv of 1.135. The secondary rainfall and the secondary rainfall erode Forces, monthly rainfall and monthly rainfall erosivity, annual rainfall and annual rainfall erosivity all showed a cubic relationship.