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中亚热带5种类型森林土壤微生物群落特征

杨君珑 付晓莉 马泽清 邸月宝 刘琪璟 王辉民

杨君珑, 付晓莉, 马泽清, 邸月宝, 刘琪璟, 王辉民. 中亚热带5种类型森林土壤微生物群落特征[J]. 环境科学研究, 2015, 28(5): 720-727.
引用本文: 杨君珑, 付晓莉, 马泽清, 邸月宝, 刘琪璟, 王辉民. 中亚热带5种类型森林土壤微生物群落特征[J]. 环境科学研究, 2015, 28(5): 720-727.
YANG Junlong, FU Xiaoli, MA Zeqing, DI Yuebao, LIU Qijing, WANG Huimin. Characteristics of Soil Microbial Community in Five Forest Types in Mid-Subtropical China[J]. Research of Environmental Sciences, 2015, 28(5): 720-727.
Citation: YANG Junlong, FU Xiaoli, MA Zeqing, DI Yuebao, LIU Qijing, WANG Huimin. Characteristics of Soil Microbial Community in Five Forest Types in Mid-Subtropical China[J]. Research of Environmental Sciences, 2015, 28(5): 720-727.

中亚热带5种类型森林土壤微生物群落特征

基金项目: 国家自然科学基金重大国际合作研究项目(31210103920);国家重点基础研究发展计划(973)项目(2012CB416903)

Characteristics of Soil Microbial Community in Five Forest Types in Mid-Subtropical China

  • 摘要: 采用PLFA(phospholipid fatty acids,磷脂脂肪酸)分析法研究江西省九连山国家级自然保护区杉木纯林、马尾松纯林、杉木阔叶混交林、马尾松阔叶混交林与天然常绿阔叶林的土壤微生物群落结构特征,探讨植被特征和土壤理化特征对土壤微生物群落的影响. 结果表明:①杉木阔叶混交林土壤细菌、放线菌和总微生物生物量最高,分别为7.77、1.74和18.21 nmol/g,而马尾松纯林均最低. ②针阔混交显著提高了土壤微生物生物量及其丰富度. 土壤微生物生物量及其丰富度均与土壤含水率、w(AN)(AN为有效氮)、w(TC)、w(TN)呈显著正相关(R为0.426~0.701),而与C/N〔w(TC)/w(TN)〕呈显著负相关(R分别为-0.447、-0.518). ③w(AN)对土壤微生物群落结构的解释率达55.8%. 尽管林下灌木、草本层生物量对土壤微生物生物量影响不大,但对微生物群落结构有一定影响,解释率分别为5.5%和6.3%. 灌草层丰富度与土壤微生物生物量及其丰富度呈显著正相关(R为0.369~0.452). 可见,阔叶树种和林下灌草层能够显著影响土壤微生物群落组成.

     

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