Effects of Rainfall Intensity on Runoff and Sediment Yield in Black Soil Slope

In this paper, the characteristics of sediment yield on slopes under different rainfall intensities (30, 50, and 70 mm/h) are studied through rainfall simulation test. The results show that the runoff yield time decreases with the increase of rainfall intensity, and the runoff and sediment yield fluctuate more significantly. The variation of the sediment yield with rainfall duration can be described by a power function. The erosion morphology of slope is mainly characterized by splash and sheet erosion. The area with severe erosion is 0.158 m
²
, accounting for 26.3% of the slope area. Generally speaking, with the increase of rainfall intensity, the disturbance effect on runoff and sediment yield is enhanced, and the degree of erosion damage on slope is increased.