Soil Microbial Community Structure in Diverse Land Use Systems:A Comparative Study Using Biolog,DGGE,and PLFA Analyses

作     者：XUE Dong YAO Huai-Ying GE De-Yong HUANG Chang-Yong 

作者机构：Key Laboratory of Polluted Environment Remediation and Ecological Health Ministry of Education College of Environmental and Resource Sciences Zhejiang University Huajiachi Campus Hangzhou 310029 （China）. Department of Environmental and Chemical Engineering Luoyang Institute of Science and Technology Luoyang 471023 （China） 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2008年第18卷第5期

页      面：653-663页

核心收录：

学科分类：07[理学] 0818[工学-地质资源与地质工程] 0903[农学-农业资源与环境] 0901[农学-作物学] 0713[理学-生态学] 

基　　金：the National Natural Science Foundation of China (Nos.30671207 and 40371063) 

主　　题：Biolog DCCE microbial community structure PLFA tea garden soil 

摘      要：Biolog, 16S rRNA gene denaturing gradient gel electrophoresis （DGGE）, and phospholipid fatty acid （PLFA） analyses were used to assess soil microbial community characteristics in a chronosequence of tea garden systems （8-, 50-, and 90- year-old tea gardens）, an adjacent wasteland, and a 90-year-old forest. Biolog analysis showed that the average well color development （AWCD） of all carbon sources and the functional diversity based on the Shannon index decreased （P 〈 0.05） in the following order： wasteland 〉 forest 〉 tea garden. For the DCCE analysis, the genetic diversity based on the Shannon index was significantly lower in the tea garden soils than in the wasteland. However, compared to the 90-year-old forest, the tea garden soils showed significantly higher genetic diversity. PLFA analysis showed that the ratio of Gram positive bacteria to Cram negative bacteria was significantly higher in the tea garden soils than in the wasteland, and the highest value was found in the 90-year-old forest. Both the fungal PLFA and the ratio of fungi to bacteria were significantly higher in the three tea garden soils than in the wasteland and forest, indicating that fungal PLFA was significantly affected by land-use change. Based on cluster analysis of the soil microbial community structure, all three analytical methods showed that land-use change had a greater effect on soil microbial community structure than tea garden age.