MODEL PENDUGAAN CADANGAN BIOMASSA DAN KARBON HUTAN TROPIS BASAH DI PT SARI BUMI KUSUMA, KALIMANTAN TENGAH

The research aimed to develop the allometric models for prediction of biomass and carbon stock of forests in PT SBK, to assess the suitability of previously published allometric models that could be applied in PT SBK, and to develop models of the forest biomass expansion factor and scalling factor in PT SBK. The data were collected in PT. SBK, Central Kalimantan. The number of trees sampled in this research was 23 with their dbhs range from 2 to 32 cm in the line planting system and 17 trees with diameters fom 1.1 up to 115 cm in forest with TPTI system. Destructive sampling was used to collect the samples. Carbon content is typically derived from measurements by the method of Walkey and Black. The most suitable allometric model is Ln Y = Ln a + b Ln X where diameter at breast height (D), buttresses diameter (Dpkl), wood density (�), stem weight (Ws), and stem carbon (Cs) were used as predictors for total biomass and carbon stock of forest. A comparison of above-ground biomass to previous research report in tropical rainforests implies that our allometric models differ largely from the general models. BEF models for forest with line planting and TPTI system were 2.19 and 1.82, respectively. Scaling factor model