Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10846216 | Soil Biology and Biochemistry | 2005 | 9 Pages |
Abstract
Methane fluxes were measured monthly over a year from tropical peatland of Sarawak, Malaysia using a closed-chamber technique. The CH4 fluxes in forest ecosystem ranged from â4.53 to 8.40 μg C mâ2 hâ1, in the oil palm ecosystem from â32.78 to 4.17 μg C mâ2 hâ1 and in the sago ecosystem from â7.44 to 102.06 μg C mâ2 hâ1. A regression tree approach showed that CH4 fluxes in each ecosystem were related to different underlying environmental factors. They were relative humidity for forest and water table for both sago and oil palm ecosystems. On an annual basis, both forest and sago were CH4 source with an emission of 18.34 mg C mâ2 yrâ1 for forest and 180 mg C mâ2 yrâ1 for sago. Only oil palm ecosystem was a CH4 sink with an uptake rate of â15.14 mg C mâ2 yrâ1. These results suggest that different dominant underlying environmental factors among the studied ecosystems affected the exchange of CH4 between tropical peatland and the atmosphere.
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Authors
Lulie Melling, Ryusuke Hatano, Kah Joo Goh,