土壤细菌类克隆群落及其结构的生态学特征  

Structures of bacteria cloning communities in the soil environment and their ecological characteristics

作　　者：夏北成[1] Zhou J Tiedje J M 

机构地区：[1]中山大学环境科学研究所,,广州510275 [2]Oak Ridge National Laboratory,Oak Ridge, [3]Center for Microbial Ecology,Michigan State University,East Lansing,

出　　处：《生态学报》2001年第4期574-578,共5页Acta Ecologica Sinica

摘　　要：以 1 6S r DNA分析方法为基础 ,获得来自不同土壤环境的细菌克隆群落 ( Cloning community) ,并分析了这些土壤细菌群落结构特征。在不同土壤环境中 ,细菌种类非常丰富 ,但其多样性将受到植被、土壤水分或土壤层次等因子的影响。表层土壤环境中细菌种类最丰富 ,多样性最高 ,且基因型中无明显的优势类群。不同土壤环境间细菌群落的相似性较低 ,表明群落结构以及空间隔离的复杂性。Some bacteria (eubacteria)cloning communities from different soil environments were obtained with a molecular method based on 16S rDNA analysis.The ecological characteristics of these cloning communities were analyzed.In the soil environments,bacteria species or strains are very abundant.The diversities are related to the vegetation,soil moisture and depth.There are the most abundant species and highest diversity in the surface soil environment,where no dominant gene pattern was observed.There are very few overlap gene patterns among bacteria communities from different soil environments.It shows that the structures of soil bacteria communities are complex.

关 键 词：土壤环境 细菌群落 克隆群落 克隆多样性 生态特征 

分 类 号：Q938.1[生物学—微生物学]