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.
内容包括造林密度与树冠结构、造林密度与林木生长特性、造林密度与生物量等关系的研究。
The studied items include the relationship between planting density and crown structure, planting density and growth characteristics, planting density and biomass etc.
为了在3 - D模型中重现，一架双引擎飞机飞越城市和浓密的树冠，发射并采集从地面，建筑物和其他结构反射回来的激光束。
To reproduce the landscape in 3-D, a twin-engine plane flew over the city and fired laser beams through the dense tree canopy. The beams bounced off the ground, buildings, and other structures below.
研究表明对果树冠层光合影响最大的因子是太阳高度角和果树的冠层结构。
Research proved that the most important factors are the elevation Angle of the sun and the structure of canopy.
从混凝土结构上生长的优美“树冠”。
Graceful "tree canopy" grows from the reinforced concrete structure.
柞蚕场的树冠类型和冠层结构是影响蚕场光合生产力的主要因素之一。
Tree crown form and canopy structure of the tussah-feeding oak forest are important influencing the photo-productivity of the stands.
‘树冠屋顶’的编制结构在天花板延伸以支持其建筑框架，聚酯酸碳材质的屋顶设计还提供散热和遮荫的功能。
The "tree roots" continue growing alternately to make a stable frame which helps reducing heat and creating various shadows from the polycarbonate roof.
但是、由于林隙结构极为复杂，难以精确地测量林隙上方和周围树冠空隙的透光情况。
However, because of difficulties in measuring light attenuation in canopy gap and complex structure of forest canopies.
同时从叶和根解剖结构上的变化，查明了枳高砧抗寒能力增强和树冠矮化的基本原因。
Thebasic reasons of low crown and resistance to cold have been revealed through anatomical analyses.
同时从叶和根解剖结构上的变化，查明了枳高砧抗寒能力增强和树冠矮化的基本原因。
Thebasic reasons of low crown and resistance to cold have been revealed through anatomical analyses.
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