Land use change influences vegetation distribution on the earth surface.Vegetation coverage

tinyterrain

physical properties and chemical properties of soil

as well as erosion resistance

lead to an increasingly complex system for mutual responses to land use/cover changes.The research of soil erosion with regard to different land use types is therefore of great importance.In this study

we implemented the universalsoil loss equation to simulate the soil erosion of Southern Loess Plateau based on different land use type withthe technologies of 3S.The results showed that the cultivated land and construction land changed significantly

and 1 123.80km2 cultivated land has turned to construction land in the past 25years at southern loessplateau;the construction land has increased 1 238.29km2.On the whole

forest and meadow changed little

but they changed significantly in the part of the study area.At he same time

the average soil erosion modulus of southern loess plateau has increased from 11.54t/(hm2·a)to 13.81t/(hm2·a)

the peak value ofSouthern Loess Plateau were Gully region of Loess Plateau which were 1 708.52t/(hm2·a)

1 584.69t/(hm2·a)in 1980and 2005.the research also shows that the soil erosion is closely related to the spatialdistribution pattern of land cover.In the study area

forest and meadow's were steeper and higher than construction land

cultivated land and unused land

so the latter(construction land

cultivated land and unusedland)'s soil erosion modulus was lower than the former(forest and meadow).The meadow land and forestwere infected by the terrain

which infected the rainfall factors severely.Forest and meadow's average soil erosion modulus were increased 2.34t/(hm2·a)and 7.32t/(hm2·a)respectively.Among all the erosiongrade

above the grade of micro-erosion's area has increased.