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