| dc.description.abstract | Forests is one of natural resources that can be updated (renewable natural resources) and essential stock for human life. In using of forest resources if not a sustainable manner can lead to increased greenhouse gas (GHG) emissions. These emissions cause global warming and climate change. Indonesia plays a role to reduce GHG emissions (CO2) due to its vast forests that can absorb and store carbon in forest biomass is large enough. This study aims to estimate the carbon storage found in logged-over forest areas in PT Ratah Timber East Kalimantan. Field research was conducted on the logged plots and testing sample tree in the Laboratory of Wood Anatomy and Wood Quality Improvement, Product Forest Ministry, Bogor Agricultural University. The experiment was conducted from April to May 2010. Data were collected from thirty-plot by measuring the diameter base on breast height, total height, and identify the types of trees found in research plots. Furthermore, next treatment is felling tree with the size of sample 5-10 cm to estimate the biomass in forest stands. The results showed that the number of tree species found in research plots covering an area of 3 ha covering 68 species of saplings were 63 species, 49 poles and tree species as many as 48 species. Based on the grouping of species, groups of dipterocarpaceae species of 24.34 ton/ha and non dipterocarpaceae at 128.66 ton/ha, thus it needs enrichment to the dipterocarpaceae species in logged-over forest areas for the preservation of further management. Estimation of carbon savings by using the carbon content of 50% and to estimate biomass with allometric equations that have been made from samples harvested sample trees is 0,0977237 D2,58. Estimation of carbon storage in stands including the saplings amounted to 5,05 ton/ha (3,27%), poles 18,82 ton/ha (10,24%), and trees of 133,57 ton/ha (86,49%). Total storage carbon contained in PT Ratah Timber, East Kalimantan, at 157,44 ton/ha or 122,92 x 10-4 Gt, where the trees had the largest percentage of carbon storage is 84,84%, followed by poles 10,05%, 3,21% saplings, litter 1,87%, and 0,04% lower plants. | en |
