Sink or Source: Alternative Roles of Glacier Foreland Meadow Soils in Methane Emission Is Regulated by Glacier Melting on the Tibetan Plateau.

ABSTRACT: Glacier foreland soils have long been considered as methane (CH₄) sinks. However, they are flooded by glacial meltwater annually during the glacier melting season, altering their redox potential. The impacts of this annual flooding on CH₄ emission dynamics and methane-cycling microorganisms are not well understood. Herein, we measured in situ methane flux in glacier foreland soils during the pre-melting and melting seasons on the Tibetan Plateau. In addition, high-throughput sequencing and qPCR were used to investigate the diversity, taxonomic composition, and the abundance of methanogenic archaea and methanotrophic bacteria. Our results showed that the methane flux ranged from -10.11 to 4.81 μg·m^-2·h^-1 in the pre-melting season, and incre

SUBMITTER: Xing T 

PROVIDER: S-EPMC8977769 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature