南京林业大学学报（自然科学版）2017，Vol.41Issue(2)：81-89,9.DOI:10.3969/j.issn.1000-2006.2017.02.012
帽儿山针阔混交林及纯林土壤碳代谢微生物群落特征研究
The carbon metabolism characteristics and diversity of soil microbial communities from pure or coniferous and broad-leaved mixed forests in the Maoer Mountain region
摘要
Abstract
[Objective]The characteristics of soil carbon metabolism of microbial communities were evaluated from pure and mixed forests ( a pure stand of Picea koraiensis and one of Larix olgensis, mixed stands of P. koraiensis and Juglans mandshurica, P. koraiensis and Fraxinus mandshurica, L. olgensis and J. mandshurica, and L. olgensis and F. mandshu?rica) in the soil ecological system of the Maoer Mountain region. [Method]By using BiologMT technology, this study compared the utilization of different carbon sources by rhizosphere microorganisms in pure and mixed plantations. [Re?sult]The average well color development ( AWCD) of soil microorganisms in broad?leaved forests was higher than that of the coniferous forests, and the AWCD of soil microorganisms in mixed forests of J. mandshurica was higher than that of the coniferous and the broad?leaved mixed forests of F. mandshurica. The Shannon index of coniferous J. mandshurica mixed forests was significantly higher than that of the F. mandshurica mixed forests ( P<0.05) . The Simpson index trend was similar to that of the Shannon index. Carboxylic acids, amino acids and sugars were the three main carbon sources which led to the difference in soil microbial metabolism. After L. olgensis and P. koraiensis were mixed with F. mandshu?rica, their ability to utilize different carbon sources decreased;this also caused the AWCD decreasing.[Conclusion]The mixed forests of J. mandshurica provided more favorable conditions to improve the carbon metabolism of soil microbial communities than mixed forests of F. mandshurica or coniferous forests.关键词
针阔混交林/根际土壤/微生物群落多样性/碳源代谢特性/BiologMT技术Key words
coniferous and broad⁃leaved mixed forests/rhizosphere soil/microbial community diversity/carbon source metabolic properties/BiologMT technology分类
农业科技引用本文复制引用
吴迪,张萌萌,张钰莹,李阳,张潆心,迟琦,逄好胜,孙广玉..帽儿山针阔混交林及纯林土壤碳代谢微生物群落特征研究[J].南京林业大学学报（自然科学版）,2017,41(2):81-89,9.基金项目
国家自然科学基金项目(31500508) （31500508）
"十二五"国家科技支撑计划(2011BAD08B02-03) （2011BAD08B02-03）
黑龙江省科技攻关项目( GZ13B004) （ GZ13B004）
