植物研究2017，Vol.37Issue(4)：549-555,7.DOI:10.7525/j.issn.1673-5102.2017.04.010
兴安落叶松林不同强度火烧迹地土壤微生物群落特性研究
Effects of Fire Intensity on the Soil Microbial Community of Larch gmelinii Forests
摘要
Abstract
We studied theeffects of fire intensity on the soil microbial community of larch forests by selecting three kinds of sites including high intensity burned site,light intensity burned site and unburned site in the current year burning in the Daxing'an Mountain.Soils were sampled from 0-5 and5-10 cm,separately in each site,and the soil microbial characteristics were analyzed by phospholipid fatty acid (PLFAs).The pH,total potassium,available phosphorus and clay and sand content were significantly compared with burned and unburned sites.The total soil microbial biomass,bacteria biomass,fungus biomass and Frankia biomass were influenced by fire,there was no significant difference in three sites.However,the structure of soil microbial community indictors,such as G +/G-and F/B,were significantly different compared high intensity burned site and other two sites.By RDA analysis,G +/G-was influenced by soil water content,and F/B was influenced by soil pH.Therefore,the current year of burning,soil water content and pH are critical factors in affecting the structure of soil microbial community.关键词
火烧强度/火烧迹地/磷脂肪酸/土壤理化性质/土壤微生物群落结构Key words
fire intensity/burned site/phospholipid fatty acid/soil physiochemical properties/structure of soil microbial community分类
农业科技引用本文复制引用
彭瑶,曹凤艳,曲来叶..兴安落叶松林不同强度火烧迹地土壤微生物群落特性研究[J].植物研究,2017,37(4):549-555,7.基金项目
国家自然科学基金(30700639)National Natural Foundation of China(30700639) （30700639）
