Investigation of Soil Animals in Four Typical Habitats in the Karst Region of Xiangxi

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.