Leaf area index (LAI) is a crucial parameter of vegetation canopy structure and controls a number of biophysical processes of vegetation.
叶面积指数(LAI)是植被冠层结构的一个重要参数，它的改变标志着植被发生了生物物理变化。
The result showed that the light distribution in the canopy were obviously affected by the leaf area index (LAI), the structure of canopy, solar radiation and its apparent movement, etc.
结果表明：梨树叶幕光能分布状况直接受叶面积系数、树冠结构、太阳位置及光强的影响。
A high efficient radiosity technique was linked with tomato structure model to simulate the energy exchanges inside the canopy, and light interception was computed at the 3D leaf level.
本文将一种高效的辐射度算法与番茄结构模型有机结合，来快速模拟番茄冠层内光分布和3D叶片上的光截获。
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