As a special kind of soil erosion that severely deteriorates the qualities of soil in granite regions. collapsing gully is widely distributed in the tropical and subtropical areas of South China. In particular. collapsing-gully erosion produces a large amount of sediment deposited on the plough layer of alluvial fan farmland and causes increase of desertification. https://unitedssports.shop/product-category/soccer-clothing-junior-bottoms-shorts/