Vertical Distribution of Methane-Metabolizing Microorganisms and Molecular Ecological Networks in Dajiuhu Peatland,Shennongjia
Wang Yuehuan
Wang Jiumei
Ge Jiwen
Wang Luwen
Liu Ziwei
Abstract：Soil samples,at the depth of 0 cm,10 cm,30 cm,and 50 cm,were collected from the Dajiuhu peatland for four quarters in 2019 to investigate the distribution patterns of methanogens and methanotrophs in vertical profile and their response to the abiotic environment.High-through put sequencing was implemented to analyze the community structure of methanogens and methanotrophs,then construct molecular ecological networks.Methanoregula and Methylocapsa were found as the largest dominant genus of methanogens and methanotrophs in the Dajiuhu peatland.The ecological networks of methanogens and methanotrophs and their synergism varied with depth,and the opposite situation was observed in methanogens and methanogens.Moreover,Methanoregula,Methanocella,Methanobacterium were identified as key species in the methanogenic community,and 4 key species of methanotrophs were Methylocapsa,Candidatus Methyloumidiphilus,Methylocystis,Candidatus Methylospira.The results demonstrated that total carbon,total nitrogen,ammonium,and nitrite could affect the structure of methanogens and methanogens,thereby controlling CH4 emissions in the Dajiuhu peatland.
Keywords：peatlandmethanogensmethanotrophsecological networkCH4 fluxgeochemistry
Publication Date：2024-10-15
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：12( 3685-3696 )