生态学杂志2012，Vol.31Issue(5)：1143-1149,7.
内蒙古贝加尔针茅草原不同利用方式土壤微生物功能多样性
Functional diversity of soil microbial communities in Stipa baicalensis steppe in Inner Mongolia as affected by different land use patterns
摘要
Abstract
By using Biolog-ECO technique, this paper studied the variations of the functional diversity of soil microbial communities in Stipa baicalensis steppe under effects of different land use patterns (grazing, mowing, and fencing). Different land use patterns changed the metabolic activities of the soil microbial communities significantly. The average well color development which directly reflected the microbial activities changed in the order of fencing > grazing > mowing. Under the effects of the land use patterns, the diversity indices of the microbial communities varied. The richness index (H), evenness index (E) , and dominance index (D) were the highest under grazing, followed by under fencing and mowing. The principal component analysis (PCA) showed that the carbon source utilization mode and metabolic function of the microbial communities were similar under grazing and mowing, but differed from those under fencing. Carbohydrates, amino acids, intermediate metabolites, and secondary metabolites were the main carbon sources utilized by the microbial communities. This study showed that different land use patterns changed the functional diversity of the soil microbial communities in the Stipa baicalensis steppe in Inner Mongolia.关键词
针茅草原/土壤微生物群落/Biolog-ECOKey words
Stipa baicalensis steppe/ soil microbial community/ Biolog-ECO.分类
农业科技引用本文复制引用
张海芳,李刚,宋晓龙,刘红梅,张静妮,杨殿林,赵树兰,多立安..内蒙古贝加尔针茅草原不同利用方式土壤微生物功能多样性[J].生态学杂志,2012,31(5):1143-1149,7.基金项目
国家自然科学基金项目(31170435和31000242)资助. （31170435和31000242）
