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为防止丘陵沟壑区域的土壤侵蚀,进行山地开发建设,对自然资源做到既合理保护,又充分利用,其基本战略是植被恢复问题。虽然森林是改善生态环境的关键因素,但由于树木生长慢、周期长、成活率低、单纯依靠森林大面积提高覆被率,在一定时间内实际上是困难的。而草本植被却表现出生长快、分蘖强、成活率高、覆被好的特性。它对表土有很强的固结和防御,冲刷能力。大面积种草对建立良性生态系统和维持生态平衡,加强农业生产的长期稳定性有重要意义。
In order to prevent soil erosion in the hilly and gully areas, mountainous areas should be developed and built, and the natural resources should be rationally protected and fully utilized. The basic strategy is to restore the vegetation. Although the forest is the key factor to improve the ecological environment, it is actually difficult for a certain period of time because of the slow growth, long period and low survival rate of the trees, and simply increasing the coverage of the forest by a large area. The herbaceous vegetation has shown fast growth, strong tillering, high survival rate, cover the good features. It has a strong surface soil consolidation and defense, scouring ability. Large areas of grass for the establishment of a benign ecosystem and maintain ecological balance, strengthen the long-term stability of agricultural production of great significance.