This essay expatiated on the history of vegetation classification research, as well as its principles, systems and applications.
本文详细介绍了植被分类的历史，以及植被分类的各种原则和系统及其应用情况。
But in just a tiny sliver of its history - the last few thousand years - the patterns of vegetation altered much faster than before.
但是，在某一小段时间历史时期内——即过去的几千年——植被分布的变化比以前要快得多。
The species pools of predatory arthropod communities in rice fields were influenced by the history of pest control, the coverage of vegetation, the diversity of environment, and climatic factors.
本文对稻田捕食性节肢动物群落的种库和群落的重建进行了初步的研究。害虫防治史、植被覆盖度、环境复杂性和气候因子等对种库都有不同程度的影响。
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