JpGU-AGU Joint Meeting 2017

Presentation information

[EJ] Poster

A (Atmospheric and Hydrospheric Sciences) » A-CG Complex & General

[A-CG47] [EJ] Material Circulations in Land Ecosystems

Thu. May 25, 2017 3:30 PM - 4:45 PM Poster Hall (International Exhibition Hall HALL7)

[ACG47-P02] Measurement of soil CO2 and CH4 fluxes in tropical peat swamp forests using atuotmated multi-chamber systems

*Ryuichi Hirata1, Kiwamu Ishikura2, Takashi Hirano2, Frankie Kiew2, Wong Guan Xhuan2, Lulie Melling3 (1.National Institute for Environmental Studies, 2.Hokkaido University, 3.Tropical Peat Research Laboratory Unit, Chief Minister’s Department of Sarawak)

Large carbon has been stored in organic soil in tropical peat swamp forests, which has various types. We measured soil CO2 and CH4 fluxes two tropical peat swamp forests using automated multi chamber system, which consists of 16 chambers. Difference of two tropical peat swamp forests is depth of ground water level (GWL). GWL in CMC site is lower and that in MLM site is higher.
Both CO2 and CH4 fluxes were strongly regulated by GWL. CO2 flux in both sites increased with decreasing GWL. However, CO2 fluxes in CMC site became plateau below -0.3 m of GWL.
On the contrast, CH4 in both sites decreased with decreasing GWL. In CMC site, CH4 is almost zero below -0.3 m of GWL.