Key Processes in CH4 Dynamics in Wetlands and Possible Shifts with Climate Change

摘要: Wetlands are a substantial source of CH4 production due to emissions during anaerobic conditions in inundated sediments. Knowledge the factors that affect flux wetlands is very important estimating dynamics and predicting future changes global climate. This paper reviews approaches for estimation controlling variables wetlands. from mainly dependent on combined effects temperature, water level, carbon supply, presence/productivity vegetation. Changes temperature emission not only by direct influence methanogens but also modifying quantity substrates primary organic matter decomposition. Water level fluctuation another key factor affecting flux, which can modify methane inhibiting or activating as well methanotrophic bacteria. Vegetation functions conduit release supplier methanogens. Global climate change expected all these addition contributing directly CO2 fertilization effects. The consequences any would be additional shifts amount regional distribution