INFLUENCE OF SLOPE ANGLE ON SOIL ENTRAINMENT BY SHEETWASH AND RAINSPLASH

Although a number of studies of the variation of soil transport with increase in slope angle have appeared, few include information on the interaction of sheetwash and rainsplash on high slope angles, which is necessary to test Horton's proposed polynomial relationship. This paper reports the testing of eight soils from Alberta, Canada, under simulated rainfall on ten slopes from 3 degree to 30 degree Material eroded was separated into that transported by rainsplash and that by sheetwash. In general, it was found that the influence of changes in slope angle on soil transport is best described by polynomial relationships.