Analysis of Soil Layer Thickness and Its Influencing Factors in Gully of the Loess Plateau

Soil thickness is an important basic characteristic of soil, which can directly reflect the degree soil development, closely related to fertility, and index for identifying fertility in field. It not only a supplementary source nutrients, but also primitive storage minerals, main indicator judging erosion. properties are indicators quality material basis plant growth. affect vegetation growth surface hydrology, has decisive effect on landslides, erosion, productivity. In view this, this paper studies its influencing factors, provides theoretical improving different regions protecting regional ecological environment.