The effects on soil erosion by soil physical properties under different utilization types in Guizhou karst mountainous region were studied

the results showed that soil physical properties are internal factors on soil erosion and anti-erodibility

the karst mountainous soils are outstandingly characterized by sheleton soil in Guizhou province. The soil physical properties were greatly different under various land utilization types

the soil physical properties were very good in the wood lands

grasslands and cultivated-terrace lands

and reduced occurrence of soil erosion

but the soil physical properties were bad and difficiently favourable in agro-cultivated slope land and bare slope land. By comparison analysis

the main indexes of revaluating karst mountainous soil anti-erodibility were put forward. The soil anti-erodibility in various land utilization types was cultivated terrace land>wood land

grass land>cultivated slope land and bare slope land. The main site of soil and water loss was cultivated and bare slope lands in Guizhou karst mountainous region.