安徽农业科学2017，Vol.45Issue(22)：78-82,5.
高寒草地土壤细菌对放牧梯度的响应
Response of Soil Bacteria Diversity to Grazing in Alpine Grassland
摘要
Abstract
As the key factors to soil microbial community,grazing influents the growth,activities and survival of soil bacteria significantly.Grazing is the premier land use pattern of Tibetan Plateau and the habitat condition transform caused by livestock grazing in Tibet turns into the key factor influent grassland soil bacteria structure and diversity.Previous researchs about the response of soil bacteria diversity to grazing were various in different grassland.The diversity and composition of the alpine grassland soil bacteria was investigated in the dual gradient of grazing with Hiseq high-throughput sequencing.The results were demonstrated as the followed:The moderate grazing increased the species richness in moderate intensity contrast to high and low grazing intensity while the evenness of soil bacteria showed no significant change with grazing gradient.The relative abundance of dominant species showed discrepancy with various grazing intensity.Pseudonocardia,Sporosarcina,Thermomonas increased while Rhodoplanes,Microlunatusdecreased in high grazed gradient than moderat-low grazed gradient.The correlation of primary phyla change with various grazing intensity and the structure and composition of soil bacteria also demonstrated the dissimilarities among heavy,moderate and low grazed gradient.关键词
微生物多样性/草地土壤/人工放牧Key words
Microbial diversity/Grassland soil/Artificial grazing分类
农业科技引用本文复制引用
赵轻舟,余志晟..高寒草地土壤细菌对放牧梯度的响应[J].安徽农业科学,2017,45(22):78-82,5.基金项目
中国科学院战略性先导科技专项B类(XDB15010203). （XDB15010203）
