广西桉树人工林根际土壤微生物群落功能多样性

发布时间：2018-03-15 20:48

本文选题：桉树人工林　切入点：根际土壤　出处：《中南林业科技大学学报》2017年01期 　论文类型：期刊论文

【摘要】：为了揭示广西主要桉树人工林种植区桉树根际土壤微生物群落的功能多样性差异,借助BIOLOG检测法,比较了广西5个地区的桉树根际土壤微生物的群落特征。结果表明:各样点土壤微生物碳源平均颜色变化率排序为梧州样点(WZ)田林样点(TL)吴圩样点(WX)鹿寨样点(LZ)宁明样点(NM);5个地区的根际土壤中微生物群落碳源利用类型和微生物代谢多样性指数(丰富度和多样性)具有明显的分异,对根际土主成分1起分异作用的碳源为糖类及其衍生物、氨基酸类和羧酸类物质;5个地区的桉树根际土壤微生物群落功能性之间的差异显著,梧州样点土壤微生物活性和功能多样性最高。
[Abstract]:In order to reveal the functional diversity of soil microbial communities of eucalyptus rhizosphere in main eucalyptus plantations in Guangxi, BIOLOG was used to detect the diversity of microbial communities in eucalyptus rhizosphere. The microbial community characteristics of eucalyptus rhizosphere soil in five regions of Guangxi were compared. The results showed that the average color change rate of soil microbial carbon source was ranked as follows: Wuzhou (WZ), Tian Lin (TLL), Wuwei (WX), Luzhai (LZ). The carbon source utilization type and microbial metabolic diversity index (richness and diversity) of microbial community in rhizosphere soil of five regions were significantly different. Carbohydrates and their derivatives, amino acids and carboxylic acids were the carbon sources for the differentiation of principal components of rhizosphere soil, and the functional differences of microbial communities in eucalyptus rhizosphere soil were significant. The diversity of soil microbial activity and function was the highest in Wuzhou.
【作者单位】：广西壮族自治区林业科学研究院;广西南宁桉树林生态系统定位观测研究站;广西国有七坡林场;
【基金】：国家林业局公益性行业科研专项项目(201204101-11) 广西林业科技项目(桂林科字[2014]15号)
【分类号】：S714.3

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