森林能够起到水源涵养和有效地防止水土流失的作用,森林水源涵养功能主要指森林土壤及地被物吸水能力。近年来的研究表明,不同森林类型、覆盖率大小等,保持水土功能有明显差异。作为陆地生态系统的主体绿色森林,在水源涵养、防止水土流失、减灾防灾方面正发挥了巨大的作用。本文试图阐明封山育林在水 Forests can play a role of water conservation and effectively prevent soil erosion. Forest water conservation mainly refers to the ability of forest soils and ground cover to absorb water. In recent years, studies have shown that different types of forests, coverage, etc., to maintain significant differences in water and soil functions. As the main green forest of terrestrial ecosystem, it plays an important role in water conservation, soil erosion prevention and disaster prevention and mitigation. This article attempts to clarify the closing hillsides afforestation in the water