太原义井工业区土壤动物群落的多样性

Diversity of Soil Animals in Yijin Industrial Estate of Taiyuan

通过对太原义井工业区污染农田土壤动物调查,共获得土壤动物5473个,隶属4门7纲.调查显示,土壤动物群落的组成与数量随污染程度的加重而减少,土壤动物密度也呈同样的变化趋势.在重污染土壤动物中,优势类群与常见类群的种类明显减少.结果表明:重金属污染对土壤动物群落结构的影响是随着污染的加重,多样性指数和密度类群指数都有减少趋势,但均匀度指数变化不明显.受到重金属污染的农田土壤动物的表聚性减弱,甚至出现逆分布现象.

The community and biodiversity of soil animals in hea were studied in Yijin industry Estate of Taiyuan,Shanxi. 5 473 soil anima subordinated to 4 Phylums,7 Classes. The investigation indicated that t soil animals decreased with the increase of pollution degree and so did th and common species decreased obviously in heavily polluted farmland. vily W metal polluted soil ere collected which he species and number of eir density. The dominant The results showed that some important indexes of community structure such as diversity（H）and density group（DG）tended to decrease with the inereese in pollution but evenness（E）changed unremarkably. In addition, the surface aggregation in vertical distribution of soil animals decreased and even appeared contrary vertical distribution in heavily polluted soil.