【摘要】 于2006—2008年对内蒙古白银库伦湿地夏季大型土壤动物作了初步调查.结果显示,所调查动物类群隶属于2门4纲7目15科.虽然群落构成以鞘翅目昆虫为主,但优势类群因生境不同而异.沼泽草甸生境中正蚓科和蚁科为优势类群,在此生境中发现了牙甲科,属内蒙古草原首次发现;而芨芨草草甸生境的优势类群为步甲科、象甲科和蚁科.沼泽草甸和芨芨草草甸的大型土壤动物密度分别为232.4头/m2和162.3头/m2,生物量分别为5.36 g/m2和5.74 g/m2,2类生境间的差异没有统计学意义(p>0.05).2类生境中土壤动物的密度和生物量均主要集中于0~10 cm土层,10 cm以下土层土壤动物急剧减少.更多还原

【Abstract】 The summer macro-soil animals in Bayianhure wetland of Inner Mongolia were investigated during the period of2006 to 2008. The results showed that the macro-soil animals found in Bayianhure wetland belonged to 15 families of 7 orders in 4 classes(2 phyla). The community composition of these macro-soil animals was mainly insects of Coleoptera,but the dominant groups in swamp and Achnatherum splendens meadows were different. Lumbricidae and Formicidae were the dominant groups in swamp meadow. Hydrophilidae was discovered in this habitat and firstly in the middle of the Inner Mongolia grassland dis tributes. Cur culionidae,Carabidae and Formicidae were the dominant groups in Achnatherum splendens meadow. The densities of macro-soil animals in above habitats were 232.4 specimen/m2 and 162.3 specimen/m2 re spectively. The biomasses were 5.36 g/m2 and 5.74 g/m2 respec tively. There was no statistic difference in both density and biomass between the above two habitats. The density and biomass of the macro-soil animals in both habitats mainly distributed in 0~10 cm depth. When the depth was more than 10 cm,the density and biomass significantly reduced.更多还原