Metabolic diversity and seasonal variation of soil microbial communities in natural forested wetlands  

作　　者：Di Wu Qi Chi Xin Sui Mengmeng Zhang Hongbai Jia Guangyu Sun 

机构地区：[1]Key Laboratory of Saline-Alkali Vegetation Ecology Restoration,Northeast Forestry University,Ministry of Education,Harbin 150040,People’s Republic of China [2]College of Life Science,Northeast Forestry University,Harbin 150040,People’s Republic of China [3]Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region,School of Life Sciences,Heilongjiang University,Harbin 150080,People’s Republic of China

出　　处：《Journal of Forestry Research》2021年第6期2619-2631,共13页林业研究（英文版）

基　　金：The work was supported by the National Natural Science Foundation of China(No.31500508);the Fundamental Research Funds for the Central Universities(No.2572020BD02);Natural Science Foundation of Heilongjiang Province(No.LH2020C041).

摘　　要：This study explores the effects of vegetation and season on soil microorganisms and enzymatic activity of different wetlands in a temperate climate.Microbial carbon metabolism diversity was assessed using community-level physiological profiles(CLPP)with 31 different carbon substrates.CLPP indicated that significant interactions occur during carbon substrate metabolism of the microorganisms.Furthermore,the different types of vegetation present in the wetland ecosystem combined with the seasonal effects to influence microbial carbon metabolism and enzymatic activity.The most significant differences occurred to carbohydrates,carboxylic acids,and amino acids.The Mantel test confirmed positive correlations between soil enzymatic activities and microbial carbon metabolism.Soil microorganisms in Betula ovalifolia and Carex schmidtii wetlands used carbon substrates more efficiently in summer than those in other forested wetlands during other periods.Enzymatic activities also showed a similar trend as microbial carbon metabolism.The results demonstrate that microbial carbon metabolism patterns can be used as biological indicators in wetland ecological alterations due to vegetation type or to seasonal factors.

关 键 词：Forested wetlands Community-level physiological profiles(CLPP) Carbon metabolism diversity Soil enzymatic activity SEASONALITY 

分 类 号：S714.3[农业科学—林学]