北京林业大学学报2016，Vol.38Issue(1)：28-35,8.DOI:10.13332/j.1000-1522.20150262
黄土丘陵区人工林土壤微生物PLFA标记多样性分析
Soil microbial community structure and functional diversity in typical plantations marked by PLFA in hilly loess region
摘要
Abstract
This study was aimed to discover the effects of different types of plantations on soil microbial community structure and functional diversity in hilly loess region.The study area is located in Jixian County,Shanxi Province of northern China.Two typical plantations (Robinia pseudoacacia and Pinus tabuliformis) were chosen and a grassland was set as control.Soil samples in the vertical layers (0-20 cm) were collected in August 2014 ,and soil microbial community structure was analyzed by phospholipid fatty acid (PLFA) analytical method.Results showed that the PLFA amounts of soil bacteria,fungi,actinomyces and Gram negative bacteria and Gram positive bacteria under the Robinia pseudoacacia plantation were all the highest in the three kinds of sample plots.Biomass of bacteria in three plots was significantly different,while that of fungi was roughly the same in the two plantations and significantly different with the grassland.Plantation improved the proportion of fungi.The phospholipid fatty acid structure of the two typical plantations was significantly different with the grassland.The correlation analysis showed that the amounts of the PLFAs were closely correlated to the soil fertility factors.Microbial community structure was correlated to plants:functional diversity was higher under the Robinia pseudoacacia plantation,followed by that under Pinus tabuliformis plantation,and grassland was the least.Therefore,for the microbial community,the two typical plantations can improve the microbial community structure and the soil quality as well,and Robinia pseudoacacia plantation was better.关键词
刺槐/油松/人工林/微生物/磷脂脂肪酸Key words
Robinia pseudoacacia/Pinus tabuliformis/plantation/microbial/phospholipid fatty acid (PLFA)分类
林学引用本文复制引用
刘海燕,魏天兴,王仙..黄土丘陵区人工林土壤微生物PLFA标记多样性分析[J].北京林业大学学报,2016,38(1):28-35,8.基金项目
"十二五"国家科技支撑计划项目(2015BAD07B02)、国家生态系统观测研究网络运行服务项目(2014—2015). （2015BAD07B02）
