Community structure of soil macro-fauna at different restoration stages of an opencast coalmine
露天煤矿不同恢复阶段大型土壤动物群落结构

An investigation was made on the compositions of soil macro-fauna in Antaibao Opencast Coalmine ecosystems at three restoration stages in Pingshuo of Shanxi Province. A total of 316 individuals belonging to 30 families, 8 orders and 4 classes of soil macro-fauna were collected, and the community structure was analyzed by using DIG index, DG index, and Gower similarity index. The results indicated that the community structure of soil macro-fauna in restored ecosystems tended to be complex with the time of land reclamation and ecological reconstruction. At the restoration stage from the 1st to the 13th year after reclamation, the biomass of soil macro-fauna increased, with a speed of fast-slow-fast. Higher values of Gower index were observed among the ecosystems with longer term restoration, indicating that soil macro-fauna had a relatively higher similarity in the ecosystems with longer term restoration than in those with shorter term restoration.