Biomassa de espécies florestais em área de caatinga arbórea

Studies on the quantification of forest biomass in Caatinga are important due to the scarcity of information related to the theme in the biome and in particular in the state of Bahia, Brazil. The objective of this study was to evaluate the biomass stock and their distribution in the components of the aerial part of forest species with higher population density and the potential to use the biomass expansion factor (FEB) to obtain estimates of aerial biomass in the area of Caatinga, located in Contendas do Sincora National Forest, BA. The biomass was quantified by destructive method. Representative trees of the nine species with the highest population density were selected felled, and distributed in three diametric classes. The average amount of total biomass and carbon per tree, considering all the species sampled, were estimated at 50.7 kg tree -1 and 25.3 kg tree -1 . Jatropha mollissima is dissimilar in relation to the biomass allocation (branches > stem > leaves) in relation to the other species (stem > branches > leaves). The highest values of individual biomass were verified in the species Commiphora leptophloeos (171 kg tree -1 ), Coccoloba oblonga (76 kg tree -1 ) and Pseudobombax simplicifolium (40 kg tree -1 ). The mean FEB obtained for all species (1.74) provided estimated values close to the real ones.