Deep soil microbial carbon metabolic function is important but often neglected:a study on the Songnen Plain reed wetland,Northeast China
作者机构：Key Laboratory of Wetland Ecology and EnvironmentNortheast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130102China University of Chinese Academy of SciencesBeijing 100049China Xi'an University of Architecture and TechnologyXi'an 710055China School of Hydraulic EngineeringDalian University of TechnologyDalian 116024China
出 版 物：《Fundamental Research》 (自然科学基础研究（英文版）)
年 卷 期：2023年第3卷第6期
页 面：833-843页
核心收录：
学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学]
基 金：the Jilin Scientific and Technological Development Program(20210101091JC) the National Natural Science Foundation of China(41730643,41871090) the Innovation Team Project of Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences(2022CXTD02)
主 题：Soil profiles Soil microbial functional diversity Biolog-ECO Substrate utilization Wetland
摘 要：Soil microbial carbon metabolism is critical in wetland soil carbon cycling,and is also a research hotspot at ***,most studies focus on the surface soil layer in the wetlands and the microorganisms associated with this *** this study,0-75 cm soil profiles were collected from five widely separated reed wetlands in the Songnen Plain,which has a large number of middle-high latitude inland saline-sodic *** Biolog-ECO method was used to determine the carbon metabolic activity and functional diversity of soil *** results showed that soil carbon metabolic activity decreased with increasing soil *** carbon metabolic activity of soil microorganisms in the 60-75 cm layer was approximately 57.41%-74.60%of that in the 0-15 cm *** soil microbial Shannon index and utilization rate of amines decreased with an increase in soil depth,while the Evenness index and utilization rate of polymers tended to increase with soil *** organic carbon(DOC)is the most important factor affecting microbial carbon source utilization preference,because microorganisms mainly obtain the carbon source from *** result of the correlation analysis showed that the soil microbial carbon metabolic activity,Shannon index,and Evenness index significantly correlated with soil total carbon(TC),microbial biomass carbon(MBC),DOC,total nitrogen(TN),ammonium nitrogen(NH_(4)^(+)-N),nitrate nitrogen(NO_(3)_(−)-N)contents,and electrical conductivity(EC).This study emphasized the important role of microbial carbon metabolic function in deep soil.
维普期刊数据库