Scientists who study plants and trees from space have long relied on satellite-derived measures of “greenness”—that is, observations of the amount of sunlight reflected by vegetation.

长期以来，研究植物的科学家采用卫星测量植被的新鲜指数，即观测植物反射阳光值，预测植物的状态。 植物新鲜指数的变化是季节性的。

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Study on vegetation colony structure and the interception of light by a canopy is one of important fields of the study on canopy micro-climate.

植物群体受光结构与光截获的研究是冠层小气候研究重要领域之一。

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Study state of vegetation during historical period in BeiLuo River valley by the methods of literature.

为了探明历史时期北洛河流域的植被状况，采用文献资料法对此做了一定的研究。

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Better results were achieved in classrooms with vegetation, the study said.

CNN: Office foliage for feel good factor

And he concluded that in the study area the elephants were "nowhere close" to becoming a threat to the vegetation.

BBC: Elephants eat their way to equilibrium