【摘要】 降雨侵蚀力因子估算结果会直接影响土壤侵蚀模型预报精度。采用EI3 0经典算法与章文波日雨量模型分别计算降雨侵蚀力并进行比较,发现日雨量模型适用于辽宁省降雨侵蚀力计算。采用辽宁省及周边省份共39个气象站1961—2015年日降雨资料,计算得到辽宁省降雨侵蚀力均值为3 316.02 MJ·mm/(hm~2·h·a),空间分布上呈由东向西、从南到北逐渐减小的趋势,降雨侵蚀力最小值出现在朝阳市建平县,最大值出现在丹东市宽甸县。更多还原

【Abstract】 The estimation results of rainfall erosion force will directly affect the accuracy of soil erosion prediction model. The paper calculated and compared the rainfall erosion force through classical algorithm EI30 and daily rain model respectively and found out that the daily rain model was applicable for the calculation of rainfall erosion force of Liaoning Province. The obtained mean value of rainfall erosion force of Liaoning Province was 3 316.02 MJ·mm/( hm~2·h·a),showing the trend of gradual reduction from east to west and from south to north in space by using the daily precipitation data of 39 weather stations of Liaoning Province and peripheral provinces in the period of 1961 to 2015. The minimum value of rainfall erosion force was Jianping County of Chaoyang City and the maximum value was Kuandian County of Dandong City.更多还原