【Key words】 poplar plantation； growth pattern； biomass； crown structure； leaf efficiency；
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Crown structure determining physiognomy of trees and influencing the harvest of light energy affects tree primary productivity.
树冠结构决定着林木外部形态和对光能的截获能力,并直接影响林木个体的初级生产力。
参考来源 - 林分密度对山桃树冠结构的影响研究Tea plant's canopy structure of the composition,the canopy frame indexes's size、shape and structure directly impact on the tea's production and quality.
茶树树冠结构的构成状况,茶树树冠的大小、形状、结构直接影响着茶树的产量和品质。
参考来源 - 茶树树冠结构数学模型的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
商用高空间分辨率卫星数据的出现，为人们利用遥感技术研究树冠结构提供了新的数据源。
The appearance of commercial high-resolution satellite data supplies new resources for people to study crown structure of a tree by using remote sensing technique.
并就不同冠层对光吸收的贡献与树冠结构动态分析及抚育间伐修枝方面的关系进行了讨论。
Furthermore, the relationships among contribution of different layers of tree crown to light absorption, dynamic analysis of tree crown structure and thinning as well as pruning were discussed.
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。
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.
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