亚热带常绿阔叶林涵养水源效能的研究

Studies of the Efficacy of a Subtropical Evergreen Broadleaved Forest in Conserving Water Resources

以湖南省会同县一块常绿阔叶林为对象，对其林地土壤水分的物理特征、枯枝落叶层的持水特征、土壤水分的下渗特征、降雨雨滴的大小分布及降雨动能特征等进行了测定分析，结果表明，常绿阔叶林生态系统对减少雨水对土壤的侵蚀、涵养水源具有重要的作用．

Taking an evergreen broadleaved forest in Huitong County of Hunan Province as the research object,this article has analysed and determined the physical characteristic of water in soil,the water-holding Characteristic of litter layer,the characteristic of water infiltration into soil,the characteristic of rain-drop size distribution,and the characteristic of rain kinetic energy.The results indicate that the evergreen broadleaved forest ecosystem plays an important role in preventing soil from rain eroding and in conserving water resources.