Response of Carbon Emissions and the Bacterial Community to Freeze-Thaw Cycles in a Permafrost-Affected Forest-Wetland Ecotone in Northeast China.

ABSTRACT: Climate warming can affect freeze-thaw cycle (FTCs) patterns in northern high-latitude regions and may affect permafrost carbon emissions. The response of carbon release and microbial communities to FTCs has not been well characterized. Here, we conducted laboratory incubation experiments to investigate the relationships among carbon emissions, bacterial community, and soil variables in a permafrost-affected forest-wetland ecotone in Northeast China. The emission rates of CO₂ and CH₄ increased during the FTCs. FTC amplitude, FTC frequency, and patch type had significant effects on carbon emissions. FTCs increased the contents of soil DOC, NH₄⁺-N, and NO₃^--N but reduced bacterial alpha diversity. CO₂ emissions were

SUBMITTER: Liu C 

PROVIDER: S-EPMC9609725 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature