集合环境梯度对森林生物多样性的影响

通过对不同环境梯度上的森林群落内植物和昆虫类群生物多样性的研究，发现森林各功能类群的多样性与集合环境梯度间的相关关系不很明显，但可以看出它们都随环境梯度的升高而呈上升的趋势，Ｂｅｔａ多样性与环境梯度相关紧密，呈直线上升，从植物类群物种的βｚ与昆虫类群物种的βｋ对集合环境梯度变化的反应来看，βｋ明显落后于βｚ。

EFFECTS OF ENVIRONMENTAL GRADIENT ON BIODIVERSITY OF FORESTS

The biodiversity of plant groups and insect groups within the forest communities at different enviromnental gradients was studied.The Correlativity of the biodiversity of every functional group of forest communities and the enviromnental gradients were not significant,but these biodiversities showed the trendincreasing with the raising of enviromnental gradient.Beta diversity was closelyrelated to enviromnental gradient,with a linear increase. However,the changerate of beta diversity of insect communities was behind that of plant communities.