草业学报2017，Vol.26Issue(1)：43-53,11.DOI:10.11686/cyxb2016066
高寒草甸土壤微生物群落功能多样性对广布弓背蚁蚁丘扰动的响应
Responses of soil microbial community functional diversity to Camponotus herculeanus ant-hill disturbance in alpine meadows
摘要
Abstract
To understand the function of the ants in the health and stability of an alpine meadow ecosystem we analyzed the effects of ant-hill disturbance on soil physical and chemical properties and microbial functional di-versity in an alpine meadow using the Biolog-ECO microplate method.The results showed that while organic matter,total nitrogen,available nitrogen,available phosphorus and available potassium levels within the 0-10 cm soil depth were significantly higher than those in the 10-20 cm soil depth as expected (P <0.05),and that ant-hill disturbance had no significant effect on soil physicochemical properties (P >0.05).Ant-hill disturbance significantly improved soil microbial diversity index (specifically,values of Shannon-Weiner,Pielou,McIn-tosh and carbon utilization efficiency)and principal component analyses showed that ant-hill disturbance influ-enced soil microbial diversity and changed the microbial metabolism characteristics of soil microorganisms,to a status where carbohydrates,amino acids and carboxylic acid were the main carbon sources for the soil microbial community.Redundancy analyses indicated that metabolic rate and microbial functional diversity of soil micro-bial community was affected by soil nutrient levels.Therefore,the mining activities of the ants and associated accumulation of organic matter changed the soil microenvironment under the ant hills,resulting in changes to the soil microbial carbon source utilization and metabolism.关键词
蚁丘/Biolog-ECO/土壤微生物群落/高寒草甸Key words
ant-hill/Biolog-ECO/soil microbial community/alpine meadows引用本文复制引用
杨有芳,字洪标,刘敏,阿的鲁骥,陈焱,王长庭..高寒草甸土壤微生物群落功能多样性对广布弓背蚁蚁丘扰动的响应[J].草业学报,2017,26(1):43-53,11.基金项目
国家自然基金项目（31370542），国家重点基础研究发展计划（973计划）（2013CBA01807），中央高校基本科研业务费专项资金项目（2014NZYTD01）和西南民族大学研究生创新型科研项目（CX2016SZ070）资助。 （）
