The main cause of natural factors, such as topography, especially areas of high slope style groundcover. The roots of plants, soil adhesion Characteristics of soil and rock
Mainly due to natural factors such as topography. Especially in the high slope. Characteristics ground cover The adhesion of soil, plant roots. The nature of the soil and rock
The main cause is caused by natural factors such as topography, especially the area the slope high, the crops soil adhesion of plant roots Characteristics of soil and rock.