Strategies for CH4 Emission Reduction from Lakes: Understanding the Key Driving Factors for CH4 Production and Lake Restoration

Wetlands are active sites of global carbon processing, unceasingly emitting atmospheric methane.Generation and emission of CH4 is a complex sequential process involving multiple biochemical steps mediated by an array of diverse microbial communities.Once produced in the sediments, CH4 may venture into different pathways, depending on which it is either oxidised into CO2 or released as CH4 into the atmosphere.The main CH4 pathways in wetlands are diffusion through the water column, ebullition, and plant-mediated transport.This study addresses the key factors influencing CH4 production, which is critical for sustainable lake management and restoration to reduce CH4 emissions.Strategic lake management and restoration plans are essential for reducing CH4 emissions by controlling key factors.Important factors include depth of water, macrophytic growth, microbial community, availability of substrates, temperature, pH, dissolved oxygen, eutrophication, and several others.These factors have been considered and briefly discussed in the present paper.