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根据《西北黄土高原水土保持专项治理规划任务书》和《规划方案》的要求,进行黄土高原水土保持规划是以县级和3000平方公里以上的大流域为规划单元,还必须按不同类型区选择20平方公里左右的代表小流域进行典型调查和典型规划。其目的是为了摸清小流域的基本情况和水土流失情况,并且根据水土流失规律研究生产发展方向与治理措施布局,为编制大面积水土保持规划提供主要依据。但是,从目前所选定的小流域所收集的资料
According to the “Northwest Loess Plateau Soil and Water Conservation Special Governance Planning Mission Statement” and “planning program” requirements, the soil and water conservation planning of the Loess Plateau is based on the county and 3,000 square kilometers of the basin as a planning unit, but also must be selected according to different types of area Representative small watersheds of about 20 square kilometers carry out typical surveys and typical planning. Its purpose is to find out the basic situation and soil and water loss in the small watershed, and to study the development direction of production and the layout of the governance measures according to the law of soil and water loss, so as to provide the main basis for the preparation of large-scale soil and water conservation planning. However, the data collected from the small watersheds currently selected