地表压实对雨滴溅蚀量的影响

Effect of Surface Density on Amount of Splash Erosion

雨滴击溅是坡面水力侵蚀的主要动力之一,溅蚀量多少直接受制于地表土壤状况。通过雨滴击溅实验,分析了雨滴直径、土壤密实度等对土壤溅蚀量的影响。结果表明:土壤密实度与土壤溅蚀量呈负相关,雨滴直径与土壤溅蚀量呈正相关;溅蚀量随着距溅蚀杯的距离的增大而减小,呈指数函数分布;溅蚀量受雨滴直径和土壤密实度的影响,其关系可用Ms=0.029d3.764.5ρ.128来描述。

Raindrop splash is one of the main dynamic of hills lope water erosion,and the amount of splash erosion is controlled by surface soil condition.In this paper,the effect of raindrop diameter and soil density on the amount of splash erosion is studied.The results show that the amount of splash erosion is negatively correlated with soil density and positively correlated with raindrop diameter.The amount of splash erosion decreases with the increase of the distance from splash cup,and follows exponential distribution.The amount of splash erosion is affected by raindrop diameter and soil density,the relationship of which can be described by the function Ms=0.029 d3.764·ρ5.128.