延安市绿地生境春季大型土壤动物群落结构研究

摘要

In the spring of 2010,five soil macro-fauna communities were investigated over urban green-belts in Yan'an City,Shaanxi Province. The soil macro-faunas were taken by handsorting in different soil layers. 147 individuals were collected, which belonged to 13 orders, 7 classes, and 3 phyla. The results showed that the dominant orders were Hymenoptera,Coleoptera(adult) ,Coleoptera(larva),Araneae,while the frequent orders were Orthoptera, Lambrieida, Isopoda, Lithobiomorpha, Diptera, Sphaerotheriida, Geophilomorpha,Styommatophora, Lepidoptera(larva), and others were rare orders. The results showed that the vertical distribution of soil macro-fauna was of surface aggregation, and the characteristic index of soil macro-fauna were analyzed.%2010年春季对延安市周边5个不同地区绿地生境中大型土壤动物群落进行调查.通过手拣法,共获得大型土壤动物标本147只,隶属于3门7纲13目.结果表明,膜翅目、鞘翅目成虫、鞘翅目幼虫和蜘蛛目为优势类群；直翅目、正蚓目、等足目、石蜈蚣目、双翅目、圆马陆目、地蜈蚣目、柄眼目、鳞翅目幼虫为常见类群；其余为稀有类群.研究表明大型土壤动物群落数量垂直分布有明显的表聚现象,并分析了大型土壤动物的群落特征指数.