Takashi Hirano, Hendrik Segah, Kitso Kusin, Suwido Limin, Hidenori Takahashi, Mitsuru Osaki
Proceedings of the 14th International Peat Congress
drainage, draught, eddy-covariance-technique, enso, fire
Theme IX. Tropical peatlands
To assess the CO2 balance of tropical peatland ecosystems, we have measured CO2 flux using the eddy covariance technique on three ecosystems (undrained forest, drained forest and drained burnt site) in Central Kalimantan, Indonesia since 2001 or 2004. Annual net ecosystem CO2 exchange (NEE) was positive at all sites and in all years, which means that the all ecosystems functioned as CO2 sources, including the relatively-intact undrained forest. The NEE showed a large interannual variation at forest sites. Annual NEE was large in ENSO years mainly because ecosystem respiration increased with decreasing ground water level.