西藏东南部林牧交错带林地与湿地的土壤动物群落比较
Comparison of Soil Animal Communities between Woodland and Wetland in the Forest and Animal Husbandry Zone of Southeastern in Tibet

比较研究西藏东南部典型林牧交错地带林地与湿地的土壤动物群落特征，为西藏东南部林地、湿地土壤动物群落研究提供科学数据。采用土钻法随机取样，Tullgren干漏斗法分离，参考土壤动物检索图鉴及大类别分类方法进行鉴定，并以DG多样性、Jaccard相似性系数q和Gower系数Sg分析该地区林地和湿地的土壤动物群落结构。结果表明，样地内(林地和湿地)共捕获土壤动物393头，属3门6纲18类，其中林地优势类群为弹尾目，湿地优势类群为弹尾目与前气门亚目。2 种生态类型土壤动物群落的DG差异不显著，群落类群个体数相似性不高，但林牧交错地带林地与湿地土壤动物个体数的异质性比类群数高。西藏东南部林地与湿地土壤动物密度、类群以及群落多样性均不同。土壤含水量明显影响土壤动物群落结构与数量，土壤动物群落结构的类群与总个体数相似性均不高。
Based on the comparison of soil animal communities between woodland and wetland in the typical forest and animal husbandry zone in southeastern Tibet,this research was to understand the characteristics of soil animal community in different ecosystems and to provide scientific data for the research of soil animal community in woodland and wetland in this region. The soil samples were collected with soil drilling method in random and was separated by Tullgren dry-funnel method. Soil animals were identified with reference to soil animal retrieval and large categories of classification methods,and DG diversity,Jaccard similarity coefficient q and Gower coefficient Sg were used to analyze the community structure of soil animal in woodland and wetland in the area. The results showed that there were 393 soil animals,belonging to three phylum,six classes and eighteen groups,in the sampled woodland and wetland. The predominant class in the woodland was Collembola and the predominant groups in the wetland were Collembola and Prostigmata. There was no significant difference in DG diversity index between two ecological types of soil animal community,but the heterogeneity of soil animal population between woodland and wetland was higher than the number of groups. Density,group and community diversity of soil animal were different between woodland and wetland in southeastern Tibet. Soil water content significantly affected soil animal community structure and quantity. The similarities of group and the total number was not high in the soil animal community structure.