杭州西湖山区春季不同林型土壤节肢动物群落结构与功能团特征

Community structure and guild feature of soil arthropod animal in different forest types in the West Lake mountainous area in spring,Hangzhou

2009年5月,应用陷阱法对西湖山区5种典型森林群落类型中的土壤节肢动物群落进行了调查.共采集到土壤节肢动物6 891个,隶属于24个类群.不同林型间土壤节肢动物类群数存在显著差异.落叶阔叶林的土壤节肢动物群落α多样性指数最高,毛竹林最低.不同林型间土壤节肢动物群落Srensen相似性系数变化不大,Morisita-Horn相似性系数变化较大.腐食性类群占个体总数的35.15%.研究结果表明:鞘翅目、膜翅目、弹尾目和啮虫目是西湖山区土壤节肢动物群落中的优势类群;落叶阔叶林的土壤节肢动物群落结构最复杂,毛竹林中的最简单;Srensen和Morisita-Horn相似性分析说明不同林型对土壤节肢动物群落的结构影响不大,但对类群的相对数量影响较大;腐食性类群为研究区的主要功能类群.

In May 2009, a survey of soil arthropod communities was conducted in five typical types of forest communities in West Lake mountainous area by pitfall traps.6 891 soil arthropod fauna individuals were sam-pled, which were classified into 24 groups.Group numbers of soil arthropod communities in five forest types were significantly different.Deciduous broadleaved forest had the highest αdiversity indices of soil arthropod community, while the bamboo forest had the lowest indices.The S?rensen similarity coefficients of soil arthro-pod communities in different forest types changed little, while the Morisita-Horn similarity coefficients varied greatly.The saprozoic group accounted for 35.15%of the arthropods.The results showed that: coleopteran,hymenoptera , collembola and psocoptera constituted the dominant group of soil arthropod fauna;soil arthropod fauna in deciduous broadleaved forest had the most complicated community structure, while the bamboo forest had the simplest; analysis of S?rensen and Morisita-Horn similarity coefficients showed that different forest types had little effect on community structures, but had a great impact on relative abundance; the saprozoic group formed the main body of guilds in study area.