Diversity of Soil Animal Community Under Different Land-Use Types in Chongming Island

The groups and composition of soil animal are the important parts of district biodiversity.The four different land-use types were chosen in Chongming Island such as nursery,paddy field,park and wet land,the diversity and composition of the soil animal community were investigated,in order to reveal the relationship between the distribution of soil fauna and different land-use types.A total of 1179 soil animal individuals,containing 483 soil macrofauna and 696 soil meso-and meio-fauna,belonging to 28 groups of soil animals were collected.Acarina was the dominant group and Collembola took the second place.For soil macrofauna,Oligochaeta was the dominant group,Coleoptera,Araneae and Isopoda were the secondary ones.The vertical distribution of the numbers and group components of soil animals had obvious surface collection,while the horizontal distribution of soil animal varied among different land-use types,the diversity of soil animal in nursery and park were higher than the others;the diversity and Pielou index of paddy field were the lowest and the Simpson index was the highest;the Jaccard index between wet land and other land-use types were much lower,and the diversity and stability of wet land were much higher than paddy field,because wet land was less affected by human activities,and its unique structural characteristics of the soil fauna were demonstrated.