Relative increases in CH4 and CO2 emissions from wetlands under global warming dependent on soil carbon substrates

Wetland  methane emissions are more temperature-dependent than CO₂ emissions, driven by soil C-to-N ratios and organic matter  decomposability. The study finds that only 23% of global wetlands will reduce  methane relative to CO₂ emissions with warming. This underscores the importance of  incorporating soil organic matter biodegradability in climate models.