Soil gas dynamics affected by moisture condition in tropical peatland area

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Methods for measuring dissolved gas concentrations were developed and applied to evaluate the greenhouse gas (GHG) dynamics in tropical peatland soil in Indonesia and the effect of environmental factors including water level and fire. Emission of CO2 was highest in drained natural forest, while that of methane was highest in flooded burnt area. Low methane concentrations in flooded natural forest implied the importance of oxygen supply via plant roots. Methane flux from drained burnt area would be controlled by methane oxidation in shallow soil layer, suggesting the increase of methane emission after the recovery of water level.