论文部分内容阅读
本文对森林植被减弱降雨侵蚀能量进行了研究。通过对森林植被减弱降雨势能的理论分析,认为森林植被减弱的降雨势能由两个部分组成:一是林冠截留作用减弱的降雨势能;二是林冠缓冲作用减弱的降雨势能。不同类型的森林植被这两部分所占的比例是不同的。林分平均高度、林分平均冠心高度、林分平均枝下高度和郁闭度,是影响森林植被减弱降雨势能的重要因素。通过对森林植被减弱降雨动能的理论分析,对不同类型森林植被减弱降雨动能的作用进行了探讨,并发现灌木林在减弱降雨动能作用中具有特殊重要的意义。
In this paper, we study the attenuation of rainfall erosion energy by forest vegetation. Through the theoretical analysis on the potential energy of rainforest weakened forest vegetation, we think that the rainfall potential energy of weakened forest vegetation is composed of two parts: one is the rainfall potential energy that weakened the canopy interception; the other is the rainfall potential energy that the canopy cushioning weakened. The proportions of different types of forest cover are different. The average stand height, average crown height of stand, average branch height and canopy density are the important factors that affect the reduction of rainfall potential of forest vegetation. By analyzing the kinetic energy of forest vegetation weakened, the role of different types of forest vegetation in reducing rainfall kinetic energy is discussed, and it is found that the shrub forest is of special significance in attenuating the kinetic energy of rainfall.