Soil anti-scourabilities of red soils derived from several parent materials under downland-hill surface feature condition in Hunan were tested to study the development law of parent materials and soil types.The results show that soil anti-scourabilites of the surface horizon from 0 cm to 4 cm are chiefly related to the cover types,but slightly effected by the characters of parent materials.The soil anti-scourabilities of the subsurface horizon are largely affected by the parent materials;their anti-sconrabilities increase with the increase of physical clay and free oxide in the soil.Soil types...
