皆伐对落叶松人工林土壤动物群落结构的影响

该研究通过对落叶松人工林皆伐区与对照区土壤动物进行抽样调查,分析比较皆伐对华北落叶松人工林土壤动物群落的影响。共获得土壤动物4 740头,4纲15目32个类群,通过分析皆伐与未皆伐林分土壤动物的物种组成、群落结构和物种多样性,结果表明,蜱螨目、弹尾纲为皆伐华北落叶松人工林土壤动物的优势类群,共占物种总数的88.36%,且皆伐区土壤动物群落Shannon-Weiner多样性指数、Pielou均匀度指数、Simpson多样性指数和Pielou均度指数有所提高,而优势集中度指数C有所下降。

Influence of Clear Cutting on Community Structures of Soil Fauna from Larix principis-rupprechtii Plantation

In order to understand the effects of clear cutting on soil fauna,this study investigated the soil animal in clear cutting area and control area of Larix principis-rupprechtii plantation.We collected 4740 individuals belong to 33 groups,14 orders and 4 classes.Statistical analysis of species composition,community structure and biodiversity of soil fauna in control and clear cutting area showed that the dominant groups were Acarina and Collembola which accounted for 88.36%of the total number of species in total. Analysis also shows that Shannon-Weiner biodiversity index,Pielou evenness index and Simpson diversity index were increased in clear cutting area,while the dominant concentration index was decreased.