毛竹林冠层对降水的截留作用

本文依据林冠层水量平衡方程对毛竹林冠层的降水截留作用进行了探讨,运用多因子逐步回归分析方法,找出了影响毛竹林冠截留作用的主要因子,分别建立了毛竹林冠截留量及截留率主因子预测方程。研究结果表明:降水量、林分叶面积指数及降水前一天日平均温度是影响毛竹林冠截留的主要因子,其中又以降水量与林冠截留相关最为密切,随降水量的增加,林冠截留量增大,与之相反,林冠截留率则随降水量的增加而减小。

The Rainfall Interception by the Canopy of Phyllostachys Pubescens Stands

On the basis of the stands canopy water balance equation, the rainfall interception by the canopy of phyllostachys pubbescens stands has been studied. By means of the multivariate regression analysis, the most important factors which influence the rainfall interception have been found and the equ-ations for predicting the quantity of rainfall interception and the rate of it have been set up respectively. The study shows that the precipitation, the rainfall rate and average temperature of the day just before the raianing day are all the main factors which affect the interception of the stands canopy. Among them, the precipitation is the closest factor relating with intercipitation. With the increase of rainfall quantity, the amount of interception goes up, but the interception rate goes down.