Koichi Yamamoto, Yoshiyuki Ishii, Hiroshi Fukami, Ken Koizumi, Kitso Kusin, Gatot Eko Susilo, Adi Jaya, Suwido H. Limin and Hidenori Takahashi
Proceedings of the 14th International Peat Congress
groundwater, indonesia, peat-swamp-forest, wetland
Theme IX. Tropical peatlands
Carbon emission from the abandoned field of the Mega Rice Project is one of the global environmental problems in Indonesia. To cope with the problem, JICA-JST SATREPS program “Wild Fire and Carbon Management in Peat-forest in Indonesia” will adopt numerical model of groundwater flow for restoring the area. To adopt model, the ground water levels and canal water levels have been measured continuously in Block C of Mega Rice Project, Central Kalimantan to investigate the groundwater movement of in the tropical peat. More than 40 observation wells were installed to measure the fluctuations of the groundwater in an area of 20 km2. GPS has been used to ensure the accuracy of the position and elevation of each measurement pipe in observation wells. The study showed, in the Block C area, ground water levels of the main canals (Kalampangan Canal and Taruna Canal) were always much lower than the groundwater levels of the surrounding areas. It means that the groundwater levels in the surrounding area of canals changed independently and has negative correlation with the canal water levels. The fluctuation of the water in the canal is also affected by the amount of rainfall and evapotranspiration.