Processes of runoff,soil erosion,and sediment are studied on five runoff plots with different landuse types.Results indicate that the differentiation of the processes is distinct.Runoff on bare wasteland,sloping farmland,dry land,and sparse forest is 13.55,10.99,7.12,and 2.85 times of those on woodland,respectively.In terms of soil erosion modulus,landuse types rank in the descendant order of bare wasteland(7 744.2 t/km²),sloping farmland(3 826 t/km²),dry land(942.2 t/km²),sparse forest(336.5 t/km²),and woodland(10.2 t/km²).Runoff can be stored up and soil erosion can be decreased effectively with the cover of vegetation.Results also show that surface runoff and soil erosion under different landuse types are obviously different for different grades and types of rainfall intensity.Bare wasteland,sloping farmland,dry land,and sparse forest are the main landuse types contributing to soil and water loss.Lastly,based on the single rainfall,regressive models for runoff,soil erosion,and sediment are constructed,their multi-correlation coefficients are found to be significant,and the models can be used for prediction.