Driving force characteristic under different Land use ways slope

Analyzed the erosion characteristic on different rainfall and different underlying horizon in base of yellow river institute of hydraulic research at 2008. The date shows: the soil erosion amount of bare slope and arable slope is 100 times that of grass slope; the steady soil erosion amount of small rainfall is 1/4 times that of middle rainfall and is 1/30 times that of heavy rainfall on grass slope; the change of flow shear force at 90mm/h rainfall in different land use ways, when they get the fluctuate steady state, the flow shear force of bare slope and farmland is about 2000Pa, the flow shear force of 20%, 40%, 60%, 80% grass cover slope are 2/5, 3/10, 1/4, 1/5 times to 2000Pa. At the experiment condition, the corrosion resistance of soil is 5.89g/Pa.min-1, the critical flow shear force to cause rill erosion is 0.31Pa.