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.