The Role of Natural Wetlands in the Global Methane Cycle
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چکیده
Methane (CH4) is the most important greenhouse gas after water vapor and carbon dioxide (CO2), and wetlands represent its largest natural source. But the high spatial and temporal variability of CH4 emissions from natural wetlands combined with patchy and incomplete information on global wetland distribution makes them especially difficult to quantify. CH4 from natural wetlands still has the largest uncertainty of any CH4 source. This is of concern because projections for the future suggest a rise in CH4 emissions and thus a positive feedback in climate change.
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