【摘要】 对湘西吉首喀斯特地貌区4种典型生境中的地区土壤动物进行了调查研究,共获标本1762只,隶属于4门11纲26目,其中优势类群为蜱螨目、弹尾目、膜翅目,占总捕量的17.46%.4种生境土壤动物种类组成很相似,在垂直分布上具有明显的表聚性.在多样性分析中,多样性指数和均匀性指数在各生境表现为枞木林>杂木林>果木林>菜地,而在3类土壤动物中则表现为大型土壤动物大于中、小型土壤动物.吉首市土壤动物季节性表现为:冬春季密度较低,夏秋季密度较高.更多还原

【Abstract】 According to the investigation on the soil fauna in Jishou city,1 762 specimens were collected,which belonged to 4 phylums,11 classes and 26 orders.The dominant groups were Acarina,Collembola and Hymenoptera,accounting for 17.46% of the total.The compositions of soil fauna in 4 habitats were similar,and most of them concentrated in the surface.The diversity and evenness indexes in different habitats were in order as following: fir forest >mixed forest >fruit forest >vegetable plot,while macrofauna were higher than meso-microfauna.The seasonal dynamics of soil fauna were that the density was lower in spring than that in autumn.更多还原