非均匀林冠降雨截留模型  

A Model of Rainfall Interception by Inhomogeneous Forest Canopy

作　　者：刘蕾[1] 刘家冈[2] 

机构地区：[1]北京林业大学资源与环境学院,北京100083 [2]北京林业大学理学院,北京100083

出　　处：《林业科学》2007年第3期8-14,共7页Scientia Silvae Sinicae

摘　　要：考虑由彼此间有间距的树冠组成的非均匀林冠内的降雨截留过程,将以前的林冠截留理论模型从水平均匀随机分布林冠推广到非均匀林冠,导出相应的偏微分方程和截留量的计算公式,并以实例运行该模型,以揭示非均匀林冠在降雨截留过程中的一些细节特征。The process of rainfall interception by inhomogeneous forest canopy composed of tree crowns with some gaps among them has been considered, and the previous theoretical model of rainfall interception has been generalized from statistically homogeneous canopy to inhomogeneous canopy as well. Both the relevant partial differential equations and a formula to estimate rainfall interception were derived. Moreover, the new model is illustrated with typical values of some ecological factors, and some specific characteristics of interception process were shown.

关 键 词：非均匀林冠 郁闭度 降雨截留 理论模型 

分 类 号：A715.2[哲学宗教—马克思主义哲学]