太子山次生林区昆虫物种多样性研究

Studies on Insect Species Diversity in the Secondary Forest Region of Taizi Mountains in Gansu Province

基于路线调查和样地调查资料,鉴定记录到太子山次生林区昆虫物种计有13目131科507属682种。研究分析了10种不同森林类型中昆虫物种的多样性指数(H′)、均匀度指数(E)、优势度指数(D)和相似性系数(J),分析结果表明:植物物种组成复杂多样的森林类型,其昆虫多样性指数和均匀度指数较高,而优势度指数较低;不同森林类型间昆虫相似性系数较低,其中高山杜鹃灌丛与其它森林类型间相似性最低。

The pathway expedition and sample plot survey on insect species diversity in the secondary forest region of Taizi mountains in Gansu Province were carried out for six years from 2000 to 2005. As the result, the insect fauna was identified into 682 species, belonging to 507 genera, 131 families and 13 orders. In addition, some important indicators including diversity indexes （H＇）, evenness indexes （E）, dominance indexes （D） and similarity coefficients （J） of insect species in ten forest types with different composition of plant species were compared and analyzed. The results showed that the diversity indexes （H＇） and evenness indexes （E） of insects in those forlower. The similarity coefficients （J） of insect species composition among the ten different forest types were lower, among which the insect species composition in alpine bushes dominated by the species of Rhododendron were significantly different from other forest types.