Community structure and soil macro-invertebrate in greenbelt habitat in Shanghai

In the spring of 2006, nine greenbelts in Shanghai, i. e. evergreen woods (A) and grassland (B) in school; grassland in a dwelling district (C) ;roadside ecological woods in Pudong (D);woods (E) and grassland (F) in the Shanghai Arboretum; woods (G) and grassland (H) in an industrial area; and woods in deserted land, Laogang landfill (I), were investigated for soil macro-invertebrate communities. A total of 1 930 soil macro-invertebrate individuals were found belonging to 18 orders, 8 classes, and 3 phylums. Among them, Mesogastropoda, Isopoda, Oligochaeta opisthopora and Hymenoptera, were dominant orders, and Coleoptera, Oligochaeta plesiopora, Hemiptera, Araneae and Lithobiomorphy, common orders, with the rest being rare orders. Soil macrofauna community varied significantly in composition and population from site to site. To be an indicator of complexity and diversity of the communities, the intensity index (I_DC) and the complexity index (C) of community was better than the Shannon-Wiener index (H′), and could adjust influence of the number of individuals of different communities on diversity. Results of hierarchical clustering of soil macmfauna using PC-ORD software show that the nine communities could be classified into six groups: (D, E, G), (F, H), C, A, B and I.