However, because of difficulties in measuring light attenuation in canopy gap and complex structure of forest canopies.
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。
The thermal variations of canopy gap of forest are controlled by the thermal characteristics of different thermal active surfaces and by their interaction, affecting the growth of plants.
各个热力作用面的热力特征和相互作用将制约林窗的热力变化，影响植物的生长。
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