生态环境学报2016，Vol.25Issue(4)：583-590,8.DOI:10.16258/j.cnki.1674-5906.2016.04.006
降水处理对南亚热带季风林土壤微生物群落结构的影响
Effects of the Soil Microbial Community Structure to Changes in Precipitation in the South Subtropical Monsoon Forest
摘要
Abstract
Changes in precipitation patterns caused by global warming is a common phenomenon, which affects soil carbon respiration and soil environmental characteristics. Soil microbial community structure is an effective indicator to reflect this change. In this paper, we take the soil of the south subtropical monsoon evergreen broad-leaved forest in Dinghu mountain as research object. Our object explores the influence of precipitation changes on soil microbial communities in different soil layers. Three experimental treatments are included: The precipitation is constant but the times of precipitation increases, reduce the amount of precipitation by 50%, normal precipitation (control group). Soil microbial biomass was measured by the method of phospholipid fatty acid (PLFA). The experiment results show that: (1) The three precipitant treatments did not significantly affected the amounts of soil microbial total PLFAs, bacteria PLFAs, fungi PLFAs, actinomycetes PLFAs and arbuscular mycorrhizal fungi PLFAs of the same layer in the rainy premonsoon season. (2) In the layer 0~10 cm, the relative abundance of bacterial, gram-positive bacteria, gram-negative bacteria, fungi, actinomycetes, arbuscular mycorrhizal had not significant difference, which indicated the soil microbial community structures were similar under different treatment conditions. (3) In the layer 10~20 cm, the relative abundance of bacterial show obvious difference (P<0.05) in the soil microbial community structure. (4) There was the negative correlation between the soil pH value and the total PLFAs of soil microbial biomass (P<0.01) under different experimental treatment.关键词
降水变化/土壤微生物生物量/微生物群落结构/季风常绿阔叶林/磷脂脂肪酸(PLFA)Key words
precipitation changes/soil microbial biomass/microbial community structure/monsoon evergreen broadleaf forest/phospholipid fatty acid分类
农业科技引用本文复制引用
吴华清,陈小梅,林媚珍,张静,褚国伟,邓琦..降水处理对南亚热带季风林土壤微生物群落结构的影响[J].生态环境学报,2016,25(4):583-590,8.基金项目
国家自然科学基金项目（31400415）；广东省自然科学基金项目（2014A030310354）；广州市属高校科技计划项目（1201430746）；广东省普通高校青年创新人才项目 （）
