The main drives of succession include canopy density of rubber forest, management, climate, soil condition and the biological properties of vegetation.

演替驱动力主要有：胶林郁闭度、胶林抚育管理措施、气候和土壤条件以及胶林植被本身的生物学特性。

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The fruit yield of sweet orange was found to be highly significantly correlated with planting density, canopy cover rate, leaf area index and light intensity in densely planted orchards.

柑桔栽植密度、树冠覆盖率、叶面积系数和光照强度与产量呈极显著相关。

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The total photosynthetic photon flux density above and below canopy has a significant diurnal and seasonal changes and the changes of the upper and lower canopy are consistent.

冠层上方和下方总的光合光量子通量密度具有明显的日变化和季节变化，并且冠层上下变化规律一致。

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GLAS's main job was measuring the height of ice sheets, but the data that came back from forested areas contain a lot of information about the height of the canopy and the density of the vegetation there.

ECONOMIST: Monitoring forests: Seeing the world for the trees | The