Research progress on methane oxidation in landfill cover soil
填埋覆土甲烷氧化微生物及甲烷氧化作用机理研究进展

Methane is the second largest contributor after carbon dioxide to global warming,while landfill is considered as one of the major sources of methane emission,accounting for 1.5%-15% of the global methane sources.Methanotrophic microorganisms play an important role in regulating global methane content,and landfill cover soil is proved to have high capacity of methane oxidation.The study of methanotrophic microorganisms in landfill cover soil and their mechanisms in methane oxidation becomes one of the hot research fields in environmental science and applied microbiology.This review summarized the recent progress on the research of methanotrophic microorganisms,mechanisms and dynamics of microbial methane oxidation,co-metabolism of methane and trace landfill gases,and environmental factors affecting methane oxidation in landfill cover soil.Some perspectives for further research on methanotrophic microorganisms in landfill cover soil were discussed.