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坝系相对稳定理论是确定坝地发展规模的重要依据,根据典型小流域坝系调查及科研成果推算,陕北丘陵沟壑区坝地发展空间为17.40万~21.75万hm2,扣除现有淤地坝可淤地面积,尚余有发展空间10.20万~14.55万hm2。在编制坝地发展规划时,要充分考虑陕北坝地现状、径流泥沙削减趋势以及坝地从建设到安全运用的时间等问题,同时对现有淤地坝的除险加固配套是在短期内扩大坝地利用面积的有效途径。从合理利用土地资源,农林牧全面发展方面考虑,陕北的基本农田建设仍应走水、梯、坝综合发展的路子。
Based on the investigation and research results of dam system in typical small watersheds, the relative stability of dam system is an important basis for determining the scale of dam development. The development space of dam land in the hilly and gully regions of northern Shaanxi is 174,000 ~ 2175,000 hm2, Silt area, still have room for development 102000 ~ 145500 hm2. In the preparation of dam development planning, we must give full consideration to the status quo of the dam in northern Shaanxi, runoff and sediment reduction trend and the construction of the dam from the construction to the safe use of the time and other issues, while the existing silt dam reinforcement and reinforcement in the short term An effective way to expand the utilization of dam area. From the rational utilization of land resources, comprehensive development of agriculture, forestry and animal husbandry, the construction of basic farmland in northern Shaanxi should follow the path of comprehensive development of water, ladders and dams.