功能群也称为适应性症候群，是指具有相似的结构或功能的物种的集合，即是将一个生态系统内一些具有相似特征，或行为上表现出相似特征的物种尽可能的归类。 功能群的引入，使人们对生态系统的理解，在一定的程度上变得更加的容易，也能更好地认识生物多样性与生态系统的结构和功能的关系。 生物成分按其在生态系统中的作用可划分为三大类群：生产者、消费者和分解者，由于它们是依据其在生态系统中的功能划分的，与分类类群无关，所以又被称为生态系统的三大功能群。
Plant functional group diversity reached its peak in timberline and reached bottom in the treeline, evenness of plant functional groups were highest in the coniferous forest.
植物功能群多样性在林线达到峰值,在树线达到低谷,针叶林内植物功能群的均匀度最高。
参考来源 - 川西高山林线交错带与林草交错带地上/地下生物多样性格局The pattern of functional groups displayed strong aggregative distribution and seemed not provide support of the niche theory.
功能群的空间分布格局并没有提供支持生态位理论观点的证据。
参考来源 - 中国东部常绿阔叶林群落Beta多样性和功能多样性研究Many researchers have studied Plant Functional Types from different perspectives and on varying scales. Focused on differing topics, these studies are designed to answer a wide range of scientific questions in relation with PFGs.
许多研究者从不同的角度、尺度来对植物功能群进行研究,这些研究结果有不同的针对方向和目的,使我们可以从不同的角度更全面的理解复杂的陆地生态系统。
参考来源 - 伏牛山自然保护区森林生态系统植物功能群及其动态研究·2,447,543篇论文数据，部分数据来源于NoteExpress
而且，无论是活力较高的基因还是活力较低的基因都来自少数功能群。
Moreover, both the less active and the more active gene types came from a small number of functional groups.
放牧退化对群落、各能值功能群碳含量影响不明显，但是却使得土壤碳含量降低。
Grazing-induced retrogression had no obvious effect on the carbon content of community and energy PFGs, but it made the content of soil carbon decreased.
认为植物生活型功能群不宜作为评估和预测本研究区域植被变化的关键植物功能型。
We concluded that plant life-form function groups were unsuitable as the key plant function types to evaluate and forecast the changes of region vegetation.
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