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一、引言太阳辐射是树木和各种作物生长过程中所需能量的直接或间接源泉。一定强度的太阳辐射达到林冠层表面时,由于叶、枝等器官的吸收、反射和透射作用,使得冠层内的辐射分布有其独具的特征。本文综合考虑天空散射和叶片的内部散射作用,从辐射通量的角度在计算机上模拟了各向同性叶角分布的冠层中辐射通量的分布特征,讨论了单叶反射系数和透射系
I. Introduction Solar radiation is a direct or indirect source of energy required for the growth of trees and various crops. When a certain intensity of solar radiation reaches the canopy surface, due to the absorption, reflection and transmission of leaves, branches and other organs, the radiation distribution in the canopy has its unique characteristics. In this paper, the distribution characteristics of radiant fluxes in the canopy with isotropic angular distribution were simulated on the computer from the perspective of radiative flux by considering both the scattering of the sky and the internal scattering of the leaves. The effects of single-leaf reflectance and transmission system