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系统调查了具代表性的撂荒地、林区和农林交错带3种不同生境紫茎泽兰对生态群落中节肢动物群落的组成与结构的影响.结果表明:撂荒地紫茎泽兰分布区内的节肢动物物种数、个体数均大于农林交错地和林地紫茎泽兰分布区,且差异显著;农林交错地的个体平均数大于林地紫茎泽兰区,但物种数平均值相近.撂荒地紫茎泽兰区节肢动物分布特征是以植食性昆虫为主,其个体数量几乎占到节肢动物总数的三分之二;而农林交错带和林地紫茎泽兰区中,天敌和害虫比例分布相对比较均衡.撂荒地紫茎泽兰分布区内植食性昆虫虽多,但天敌的物种及个体数量较少,林区和农林交错地带,其生境相对封闭并且受各种干扰较少,植食性昆虫的物种稳定性相比撂荒地要高很多,因此天敌和害虫数量相对均衡.
The effects of three different habitats, Eupatorium adenophorum on the composition and structure of arthropod communities in ecotopes, were systematically investigated in typical wasteland, forestry and agroforestry zones. The results showed that: The number of arthropod species and individuals were greater than that of the agro-forestry staggered and the woodland Eupatorium adenophorum distribution, and the difference was significant; the average number of individuals in the agro-forestry staggered was greater than that of the Eupatorium adenophorum forestland, but the average number of species was similar. The distribution characteristics of arthropod in Eupatorium adenophorum are mainly plant-eating insects, accounting for almost two-thirds of the total number of arthropods. In the agroforestry zone and Eupatorium adenophorum, the proportion of natural enemies and pests Relatively balanced.Because of the abundance of phytophagous insects in the wasteland of Eupatorium adenophorum, there are fewer species and individuals of natural enemies, and the habitats of the natural enemies are relatively closed and less affected by various disturbances, The species stability of insects is much higher than abandoned fields, so the number of natural enemies and pests is relatively balanced.