【摘要】 2008年7月至9月,对茂兰喀斯特森林3种植被类型下的大型土壤动物进行研究,共获5 728只,隶属3门7纲23类.选用类群数、个体数及多样性、均匀性、优势度指标来分析土壤动物群落结构.结果表明:茂兰喀斯特森林生态系统中,优势类群为膜翅目(蚁科)和蜘蛛目2类,稀有类群为原尾目、石蛃目、等翅目、同翅目、半翅目、双翅目(包含幼虫)、缨翅目、综合纲8类;两个优势类群的个体数占总捕获量的50.93%,3种植被类型的优势度:乔木林大于乔灌混交林大于草坡;均匀性指数差异不大;群落相似性系数差异较小.更多还原

【Abstract】 From July to September,2008,the soil macrofauna communities under three vegetation types in Maolan karst forest were studied.A total of 5728 individuals were collected,belonging to 3 phyla,7 classes and 23 orders.The community structure of the soil macrofauna was analyzed with the indicators of community number,individual number and diversity,homogeneity and dominance.Hymenoptera and Arachnida were shown to be the 2 predominant groups in the ecosystem system of Maolan karst forest.Rare taxa included Protura,Microcoryphia,Isoptera,Homoptera,Hemiptera,Diptera,Thysanoptera and Symphyla.Dominance of the three vegetation types appeared in the order of tree forest > parang > grassland.No significant differences were observed in uniformity index and community similarity coefficient among the three vegetations types.更多还原