Effect of soil microbial fuel cell on soil methane flux in paddy field

The impact of methane on the greenhouse effect has received global attention.Due to the anoxic environment, high levels of organic matter and suitable temperatures, paddy soils are a major source of methane emissions. Soil microbial fuel cells(SMFCs) are microbial fuel cells that use soil as a medium to convert chemical energy from organic matter into electricity. Microbial fuel cells require abundant organic matter to maintain operation and generate electricity, and sediments contain large amounts of organic matter. In addition, the presence of a large number of electroactive microorganisms in the soil also provides conditions for the successful operation of SMFC.In recent years, SMFC has received extensive attention and exploration from researchers and scholars in terms of power production performance, eutrophication freshwater lake management, and methane emission suppression, but it is still not in-depth in methane emissions. Therefore, it is of practical significance to study and grasp the effect of SMFC on soil methane emission fluxes in paddy fields, so as to better use SMFC to achieve methane emission reduction, and to further mitigate the greenhouse effect