Abstract
The Loess Plateau is an important source of Eastern civilization, but also the most serious soil erosion in our country and in the world. Controlling soil erosion and improving the ecological environment are not only the needs of local social and economic development, but also the needs of long-term peace and stability of the country. Since the 1950s, large-scale soil and water conservation work has been carried out on the Loess Plateau. It has played a significant role in improving ecological environment, changing agricultural production conditions and developing rural economy. It is a very effective measure to take small watershed as a unit to conduct comprehensive management. There are 45,000 small watersheds of 6-10 km2 in the Loess Plateau, which are not only the basic units of soil and water loss, but also the units of comprehensive management. Slope is the source of runoff and sediment in small watershed, and slope treatment is an important part of comprehensive management of small watershed. Therefore, it is an urgent task to deepen the study of slope management.
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