Intensitas Kebakaran Hutan dan Estimasi Heat Production Menggunakan Citra Landsat.

Abstract

In 1997, Borneo forest burnt severely. Heat production (Q) represents the amount of heat energy which is produced from biomass burning. Fire intensity (I) is the rate of heat production. This study aims to obtain the estimated value of the Q and I of the forest fires in block C (Central Borneo) and block Bongan (East Borneo), to analyze the near-surface air temperature (Ta) before fire, shortly after the fire, few years after the recovery, and to estimate the time that is required to achieve the balance between CO2 emissions and CO2 uptake. Estimated value of Q and I were based on the amount of burnt biomass. Model of biomass estimation were resulted from the correlation between spectral radiance of SWIR band and ground biomass data of block Bongan. Differenced Normalized Burn Ratio (dNBR) index were used to determine of burnt area. Analysis of Ta used energy balance method. The result of research shows that the highest value of Qtotal and Itotal occurred in low-severity plot. The highest value of Qaverage occurred in high-severity plot. The highest value of Iaverage occurred in low-severity plot. Equilibrium between CO2 emissions and CO2 uptake occurred in block Bongan and block C before 2014. The average value of Ta increased in the fire events and decreased in the next years due to recovery.