Slope soil erosion is a complex interaction of runoff scouring, slope anti-erosion effects and ground substance supplementing capacity. A field experiment of artificial runoffs was carried out over 20° slopes of barren land (CK), fish-scale pits (Treatment YLK), alfalfa land (Treatment MXCD) and straw-mulch (Treatment JGFG), separately, to study hydrodynamics of the sheet flow scouring soil particles on the slopes and analyze it using the runoff shear stress theory, unit runoff power theory and runoff kinet...
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