The plant species richness index is not positive relevant to speciesevenness index for which represents the evenness extent of species distribution instead of the quantity of species.
But the research by Crowder, an insect ecologist at Washington State University in Pullman, and his colleagues, shows the importance of 'evenness' - the relative abundance of different species.
但是华盛顿州立大学的昆虫生态学家克劳德的研究显示平衡的重要性——各种物种相对充盈。
3
Species richness and evenness were unrelated to similarity in species composition.