Estimation of CO2 budget on peatlands in indonesia by using satellite based data

The peatlands are known as the carbon sink in natural. However some disturbances such as fire and drainage are occurred in Indonesian peatlands. The declining of ground water table is the most influential reason of carbon emission from peatlands. For detecting CO2 emission from peatlands in Indonesia, ground water table was estimated by satellite based precipitation and land surface temperature. The CO2 emission is represented by NEE(Net Ecosystem CO2 Exchange) which can be calculated with this equation; NEE = ER - GPP; where ER is ecosystem respiration, and GPP is gross primary productivity. As the result, the ecosystem respiration was larger than GPP in this peat forest. The annual average of ER was about twice of GPP in this region. The GPP of MOD17A2 is underestimated from in-situ observed GPP with 37.2%. The CO2 emission through fire and respiration is increased when GWT was declined.