摘要
对呼伦贝尔草甸草原6种生境的大型土壤动物群落的数量和类群组成、多样性、生态地理分布及群落排序进行研究。从6种生境中共获取大型土壤动物29个类群,优势类群为蚁科和象甲科幼虫,常见类群为线蚓科、食虫虻科幼虫、地蜈蚣目、露尾甲科幼虫、蜘蛛目、象甲科和叩甲科幼虫。各生境大型土壤动物群落优势类群基本相同,个体密度和类群数的垂直分布均具有表聚性,优势度、常见类群、个体密度和类群数及其垂直递减速率存在着一定差异。3种植物群落围封样地大型土壤动物群落多样性指数没有显著差异,但放牧和刈割对大型土壤动物群落多样性指数具有不同程度的影响。对应分析结果表明,3种植物群落围封样地大型土壤动物群落相似性不大,但刈割导致羊草草甸草原和贝加尔针茅草甸草原大型土壤动物群落与线叶菊草甸草原大型土壤动物群落越来越接近,放牧对草甸草原土壤动物群落的影响也很明显,不同的大型土壤动物对生境的偏好存在一定的差异。
This paper investigated soil macrofauna of six habitats in meadow steppe ecosystem of Hulunberand analyzed composition of numbers and groups,biodiversity,ecogeographical distribution and community ordination.Results showed that these soil animals belong to 29 groups.Among these,Formicidae and Curculionidae larvae were the dominant groups.Enchytraeidae,Asilidae larvae,Geophilomorpha,Nitidulidae larvae,Araneida,Curculionidae and Elateridae larvae were the common groups.Though the dominant groups of soil macrofauna community in different habitats were basically same and the vertical distribution of soil macrofauna is gathering to the surface,there are some differences in the common groups,the individual density,group number and its speed of vertical decrease.The biodiversity indices of macrofauna community in fenced habitats of different plant community were similar.Grazing result in the increasing of Pielou index and the decreasing of Simpson and Margalef indices.Results of Correspondence Analysis showed that there is no significant difference between three fenced habitats of different plant community.Cutting result in the soil fauna communities of Leymus chinensis meadow steppe and Stipa baicalensis meadow steppe were close to the soil fauna community of Filifolium sibiricum meadow steppe.The effect of grazing on the soil fauna community of meadow steppe is evident,and the different soil animal group preferred the different habitat.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
北大核心
2012年第3期100-107,共8页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
国家自然科学基金项目(41161040)
内蒙古自然科学基金项目(2010MS0607)
关键词
大型土壤动物
水平分布
垂直分布
生物多样性
呼伦贝尔草甸草原
Soil macrofauna
horizontal distribution
vertical distribution
biodiversity
meadow steppe ecosystem
Hulunber
