摘要：Forests has an important role in stabilize CO2 concentrations in the atmosphere as a source of carbon emissions and can absorb carbon and store. It is often called a carbon sink program . To develop this program, it needs carbon stock data stored in the form of biomass using an effective technique and easy to use. This study aimed to estimate the carbon content in the area of reclamation and secondary forest resulting from mining activities through biomass allometric equation. Biomass values obtained by non-destructive method of sampling and biomass values were used to develop allometric equations using regression analysis between the biomass with a diameter of tree. The study case was located at mine concession of PT. Insani Bara Perkasa, at the border of Kutai Kertanegara and West Kutai Districts, East Kalimantan Province. The allometric biomass equations for the reclamation area: B = 0.1 x 0.41 x D2 0.62, and for secondary forests: B = 0.118 x D2,31. This biomass allometric equations can be used to predict carbon reserves stored in the secondary forest vegetation. This study also analysed the carbon stored using remote sensing. The analytical result from the ALOS PALSAR images of study area PT Insani Bara Perkasa describes that carbon sink potential is 7,83 ton/ha in reclamation area and 9,19 ton/ha in secondary forest. The estimation of carbon uptake in reclamation area of PT Insani Bara Perkasa is 8.701,205 ton/ha and 247.836,444 ton/ha in secondary forest.Those data suggest that the reclamation activity in the study area gave a little contribution to the carbon sink program yet.
