Gully Erosion and Its Development on Loess Plateau

t Describes the erosion patterns with different characteristics in gully systems of the Loess Plateau. In small watershed gully erosion distributed as belt pattern. The development of gully system may be divided into 3 types including the concentrated, sparsed and transitional in accordance with the gully density and are mainly restricted by topographical factors of the upland plain. In gully areas the different structures and densities of gully development are affected by shapes and topography of the watershed. The developing speed of shallower gully and gully are faster than others'.