The acetotrophic pathway dominates methane production in Zoige alpine wetland coexisting with hydrogenotrophic pathway.

ABSTRACT: As a typical alpine wetland on the Tibetan Plateau, the Zoige wetland processes a large carbon stock and is a hotspot of methane emission. To date, many studies have investigated the methane flux in this wetland; however, the research on the source of methane in the soils of Zoige wetland is not clear enough. In this study, we determined the dynamic characteristics of the stable carbon isotopes during the methanogenesis of Zoige wetland soil and the corresponding microbial changes. The results showed that the δ¹³CH₄ varied between -19.86‰ and -28.32‰ and the α_C ranged from 1.0029 to 1.0104 in the methanogenesis process, which suggests the dominance of acetotrophic methanogenesis. And among the increased methanogens, acetotrophic methanogens multiplied more

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC6591398 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature