摘要
降雨特性对土壤侵蚀强度有很大的影响。降雨强度是决定土壤侵蚀强度的关键因素。降雨强度与雨滴大小、数量和雨滴降落速度有关。讨论了雨滴平均直径、平均运动速度、平均降落速度和雨滴加权平方根速度的概念及其计算方法,建立了雨滴平均直径和各种降落速度与雨强、动能的函数关系式。
The rainfall characters have great impaction to the intensity of soil erosion,which is looked as the key factor determing the intensity. It is discovered that the rainfall intensity is related to the drop size of rain,the number and the falling velocity of the drop.The paper discuss- ed the average diameter of rain drop,average velocity of moving and fall- ing and the conception of weighted velocity in square root as well as the me- thods to calculate,eigther it developed the function relationship of the average diameter of drop size and kinds of velocities with the intensity and kinetic energy of rainfall
出处
《水土保持学报》
CSCD
北大核心
1990年第3期63-70,共8页
Journal of Soil and Water Conservation
关键词
土壤侵蚀
降雨特性
雨滴动能
rainfall characters
soil erosion
kinetic energy of rain drop
