USLE模型中降雨侵蚀力因子的估算方法  

Methods for Estimating Soil Erosion Factor in the USLE Model

作　　者：王海涛 易建文 

机构地区：[1]渠县农业局,四川渠县635200 [2]中国建筑材料工业地质勘察中心四川总队,四川成都610017

出　　处：《安徽农业科学》2014年第24期8301-8303,8316,共4页Journal of Anhui Agricultural Sciences

摘　　要：土壤侵蚀的预报与定量研究一直是土壤侵蚀学科的热点和难点,通用土壤流失方程(USLE)是目前最为广泛应用的土壤侵蚀预报模型,对其中降雨侵蚀力因子(R)估算的准确性直接影响USLE的预报精度。系统地总结了国内外在估算USLE模型中降雨侵蚀力因子的常用方法,对准确、有针对性地利用USLE模型进行土壤侵蚀预测与控制有重要意义。The prediction and quantum research has always been the hotspot and difficulty of soil erosion.The universal soil loss equation （USLE） is the most widely used model for soil loss prediction.The estimation of the rainfall erosivity factor （R） has a direct effect on the preciseness of the model.The methods usually used in China and foreign countries for estimating rainfall erosivity were summarized.Some problems during the use of the methods were pointed out and the expectation for the future research of rainfall erosivity was made as well.It might be of significant importance for soil erosion prediction and control when use the USLE model more precisely and target-oriented.

关 键 词：降雨侵蚀力因子 USLE 土壤侵蚀 

分 类 号：S161.6[农业科学—农业气象学]