Soil Erodibility of Typical Climate Types in Shergyla Mountain

In order to reveal the characteristics of soil erodibility and distribution of K value in the typical climatic zone in Southeast Tibet, this paper took the soil in the vertical climatic belt of Shergyla Mountain as the research object, and EPIC model was used to analyze it. The results show that soil organic carbon content in the research region increases with the increase of the climatic change in the sea area, and then decreases again. The K value of soil erodibility is mainly distributed between 0.3229 and 0.3452, it belongs to highly erodible. The soil erodibility in different climatic types is in the following order: Mountainous temperate zone and sub-alpine cold temperate zone climate intermediate belt>Sub-alpine cold temperate zone>Mountainous temperate zone>Alpine frigid zone>Sub-alpine cold temperate zone and Alpine frigid zone climate intermediate belt. The soil erodibility K value is significantly positively correlated with soil water stability aggregate content greater than 0.25mm, water stability aggregate content greater than 0.25mm, average mass diameter, water stability index, and powder content. There was a significant negative correlation with altitude and sand content, but the correlation with soil organic carbon was not significant.