小兴安岭不同林场食叶害虫多样性调查

Investigation on Diversity of Leaf-eating Pests in Different Forest Areas of Xiaoxing’an Ling Mountains

小兴安岭不同林场自然环境中食叶害虫种类多,数量大,种群结构复杂,部分害虫危害林木情况严重。作者选取4个林场进行食叶害虫资源普查,采集到食叶害虫样本1116头,隶属于5目18科35种。经过调查得出,兴林林场的多样性指数、均匀度指数和优势度指数等均高于格金河林场、大亮子河林场和申家店林场,作者就食叶害虫对林木的危害情况进行分析,旨在为林场防治食叶害虫提供帮助。

There are many types of leaf-eating pests in the natural environment of different forest farms in Xiaoxing'an Ling Mountains, with large number and complex population structure, some pests even endangering the forest. 4 forest farms were selected to conduct a general survey of leaf-eating pest resources, and 1 116 samples of leaf-eating pests were collected, belonging to 5 orders, 18 families and 35 species. The survey results showed: the diversity index, evenness index and dominance index in Xinglin Forest Farm were higher than that in other three plots;the damage of leaf-eating pests to forest trees was analyzed, aiming at finding the control against leaf-feeding pests in forest farms.