Abstract:In order to explore the effects of land use types with different slope aspects on soil properties, five land use types (different slope aspect) in Weibei highlands were selected to analyze the differences of soil physical, chemical and biological properties in different land use types. The results showed that:(1)Soil water content, soil total porosity, soil organic matter content, total nitrogen content, microbial biomass carbon and nitrogen content decreased with the increase of soil depth, soil bulk density was the opposite except soil pH and particle composition in different land use types. (2)In 0-30 cm soil layer, on the sunny slope, soil water content, clay content and pH were the highest, while silt and total nitrogen content were the lowest in farmland; sand and total nitrogen content were the highest, while clay content was the lowest in artificial grassland; soil total porosity, soil organic matter content, microbial biomass carbon and nitrogen content were the highest, while soil water content, soil bulk density and pH were the lowest in artificial forest; soil bulk density and silt content were the highest, while soil total porosity and sand content were the lowest in natural grassland; soil organic matter content, microbial biomass carbon and nitrogen content were the lowest in abandoned farmland. On the shady slope, soil water content, silt content and pH were the highest, while clay content and total nitrogen content were the lowest in farmland; soil bulk density, clay content and microbial biomass nitrogen content were the highest, while soil total porosity, silt, sand and soil organic matter content were the lowest in artificial grassland; soil organic matter content and microbial biomass carbon content were the highest in artificial forest; soil total porosity, sand and total nitrogen content were the highest, while soil bulk density and pH were the lowest in natural grassland; soil water content, microbial biomass carbon and nitrogen content were the lowest in abandoned farmland. (3)Among the 5 types of land use, soil bulk density, fine clay, coarse clay, fine silt, coarse sand, soil pH, soil organic matter content (except abandoned farmland) of sunny slope were higher than those of shady slope. Soil water content (except abandoned farmland and farmland), soil total porosity, the coarse silt, fine sand, soil texture coarsening degrees, soil total nitrogen content (except artificial grassland), soil microbial biomass carbon and nitrogen content of shady slope were higher than those of sunny slope.