疏勒河上游冻土区大型土壤动物群落调查  

Larger-size soil animal communities of the frost soil regions in the upper reaches of Shule River

作　　者：林恭华[1] 杨传华[1] 陈生云[2] 刘文杰[2] 陈桂琛[1] 张同作[1] 

机构地区：[1]中国科学院西北高原生物研究所,青海西宁810008 [2]中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室祁连山冰川与生态环境观测研究站,甘肃兰州730000

出　　处：《草业科学》2011年第10期1864-1868,共5页Pratacultural Science

基　　金：国家重点基础研究发展计划(973计划)项目(2007CB411502);国家"十一五"科技支撑计划重点项目第4课题(2007BAC30B04);国家自然科学基金(40901040);冰冻圈科学国家重点实验室自主课题(SKLCS 09-06)

摘　　要：为了掌握疏勒河上游冻土生态系统中土壤动物的群落特征,于2010年6-7月对这一地区不同生境中的大型土壤动物进行了调查。共捕获大型土壤动物453头,隶属3纲9目13个类群,优势类群为鞘翅目幼虫、双翅目幼虫和鞘翅目成虫。与我国西北高原地区的土壤动物群落相比,疏勒河上游地区的土壤动物数量稀少、生物多样性较低,推测极端干旱可能是导致这一现象的主要原因。尽管不同植被类型间的大型土壤动物物种组成方面有较大差别,但其生物量和多样性与植被定量指标之间无显著相关关系(P>0.05)。季节冻土和多年冻土之间,土壤动物生物量、个体数和Shannon-Wiener多样性指数都无显著差异(P>0.05),而过渡类型冻土中的土壤动物生物量和个体数却显著大于其他2种冻土类型(P<0.05)。To understand the soil animal communities of the frost soil regions in the upper area of Shule River, a field survey was carried out to investigate the larger-size soil animals from different habitats during June to July, 2010. A total of 453 animals （belonging to 3 classes 9 orders 13 taxonomic groups） were identified in this study, in which the larval Coleopteran （beetles）, larval Diptera and adult Coleopteran were dominant groups. Compared with former related record at other regions in the northwest of China, the quantity and diversity of soil animal in the upper reaches of Shule River was lower due to the extremely arid conditions. Although the species composition of the soil animals differed significantly in different vegetation types, the animal biomass and diversity had no obvious correlations with quantified vegetation indices （P〉0.05）. The biomass, individual numbers and Shannon-Wiener diversity of soil animals was not significantly different between permafrost and seasonal frost （P〈0.05）; however, the diversity in the transition zone of permafrost were significantly higher than those in the permafrost and seasonal frost （P〈0. 05）.

关 键 词：大型土壤动物 冻土类型 植被类型 气候特征 

分 类 号：S154.5[农业科学—土壤学]