With field survey and laboratory experiment

the relationship between the shear strength under different land uses and its influential factors were studied to provide a scientific basis for different land use assessment of regional soil erosion. Five land use patterns

i.e. conifer-broadleaf mixed forests

shrubs lands

gardens

slope farmlands

wastelands were selected as samples to conduct observations upon these values: The soil shear strength index

bulk density

moisture content and dry density

as well as the porosity

MWD of soil aggregate and clay/silt value. Then the influential factors were analyzed with the method of the grey correlation

and the results revealed that the soil cohesion on a same slope gradually decreased from the higher parts to the lower ones under the same land use pattern. Meanwhile

the shear strength

in different lands

changed like this: Sloping farmlands＞gardens＞conifer-broadleaf mixed forests＞wastelands＞shrubs lands. Finally

the soil bulk density had the greatest correlations with the soil cohesion (C) and internal friction angle (φ)

while the MWD had smallest correlations with them. To sum up

there were linear relations between the soil shear strength and soil bulk density

total porosity

moisture content and dry density respectively.