论黄土高原丘陵沟壑区经灌沟生物工程

通过对具有典型代表性的米脂县的分析,认为水土流失严重、生态条件恶化、经济贫困的黄土高原丘陵沟壑区,开发治理技术要处理好当前与长远、当地与黄河中、下游间的利益,同时要注重经济效益问题。针对开发治理本区的重点和难点——陡坡地,提出兼顾水保和经济效益的水平沟种植多年生经济灌木的新途径,经初步实践,效果显著。

Discussion on the Bioengineering of Economic Shrubbery Gullies in Hilly and Gully Regions on the Loess Plateau

Through the analysis of Mizhi County of typical representative of hilly and gully region, it is considered that serious water and soil erosion, worsening of ecological conditions and poor economic states are the principal problems in the hilly and gully region on the Loess Plateau. The techniques of development and control over soil and water erosion should deal properly with the immediate and long-term benefits and local and mid-stream and downstream interests of the Yellow River. At the same time, attention should be paid to economic returns. With priority given to the pilot anddifficult area----steep slope lands in this region, a new way to plant perennial economicshrubs in the level ditches with stress given to water and soil conservation and economic returns has been suggested and also proved to have an apparent economic return through practices.