左家自然保护区不同次生林大型土壤动物群落的比较研究

Comparative Study of Soil Macrofauna Community in Zuojia Nature Reserve Different Secondary Forest

对吉林省左家自然保护区杂木林、蒙古栎＋黑桦林和花曲柳-榛灌丛次生林的大型土壤动物进行研究,共获大型土壤动物2522只,分别隶属3门8纲25目。三种生境大型土壤动物群落水平结构表现为类群数相似,但土壤动物组成上存在明显差异,共同优势类群均为蚁科。大型土壤动物群落垂直结构表现为表聚性,花曲柳-榛灌丛的表聚性要高于杂木林和蒙古栎＋黑桦林。蒙古栎＋黑桦林和杂木林大型土壤动物相似性程度极高,与花曲柳-榛灌丛为中等相似;蒙古栎＋黑桦林和花曲柳-榛灌丛大型土壤动物多样性相似,与杂木林多样性存在一定差异,表现为优势度指数高,均匀度、丰富度和多样性指数低。

Different secondary forest soil macrofauna at Shaw forest,Quercus mongollca Betula davurica and Fraxinus rhynchophylla-Corylus heterophylla brush in Zuojia Nature Reserve was investigated.2522 individuals of soil macrofauna were collected,belonging to 3phyla,8 class,25 orders.The results of three habitat level structure of soil macrofauna community showed a similar group number,but had obvious differences in the composition of soil macrofauna.Formicidae was the co-dominant groups.The vertical structure of soil macrofauna was obvious.Fraxinus rhynchophylla-Corylus heterophylla brush was higher than Shaw forest and Quercus mongollca Betula davurica forest.Shaw forest and Quercus mongollca Betula davurica forest have a high degree of similarity of soil macrofauna,which is generally similar to Fraxinus rhynchophylla-Corylus heterophylla brush.The diversity of soil macrofauna of Quercus mongollca Betula davurica forest and Fraxinus rhynchophylla-Corylus heterophylla brush were similar.There was some difference in Shaw forest.Simpson dominance index was high,while evenness,richness and diversity index was low.