Continuous measurements of soil CO2 and CH4 fluxes in two tropical peat forests with high and low ground water level in Sarawak, Malaysia, by using an automated multi-chamber systems

Ryuichi Hirata, Yosuke Okimoto, Takashi Hirano, Frankie Kiew and Lulie Melling

Proceedings of the 15th International Peat Congress


carbon-dioxide, greenhouse-gases, soils, tropival-peat



We will present new observations on soil carbon dioxide (CO2) and methane (CH4) fluxes, which were started in September 2015 in two tropical peat forests in Sarawak, Malaysia. The sites were one tropical swamp forest with a high groundwater level and one with a low groundwater level. At each site we installed an automated multi-chamber system consisting of 16 chambers of opaque PVD cylinders (40 cm high and 25 cm in internal diameter). The chambers were closed for 225 s sequentially and it took one hour for one rotation. The air from the closed chamber was pumped into a gas analyser (Ultraportable Greenhouse Gas Analyser, Los Gatos Research). In each site, soil and trenching plots were established to divide soil respiration into root respiration and microbial respiration. CO2…