ESTIMATIVA E VALORAÇÃO DO ESTOQUE DE CARBONO DA VEGETAÇÃO SAVÂNICA NA TRANSIÇÃO CERRADO-AMAZÔNIA
Palavras-chave: estoque de carbono; serviços ecossistêmicos; biomassa; formações savânicas; valoração de carbono.
Although the transition between the Cerrado and Amazon biomes is described as the most extensive ecotone region between savannah and forest in the world, little is known about the ecosystem services provided by its natural ecosystems. Also, it still needs to be discovered how intense anthropogenic activities and rapid changes in land use cover have affected these services and transformed this scenario over the past three decades. The present study aims to evaluate the carbon stock of the aerial part of the typical savanna vegetation that occurs in the transition between the Cerrado and Amazon biomes, to estimate its financial value, and to test the functionality of the official carbon map of Brazil, O16. For this, we used data from Mapbiomas collection 6 to generate a manually categorized vegetation map and estimate how many hectares of savanna-typical formations exist in the transition. Based on the extrapolation of the average carbon from field data collected on plots composed of typical cerrado, we estimated the potential of the transition's savanna formations to accumulate carbon. For carbon valuation, we adopted an average dollar price per ton of carbon equivalent (U$/tCO2eq) assigned by the global carbon market based on the Brazilian Carbon Pricing platform. We also evaluated the feasibility of the proposed official carbon database for the Brazilian vegetation to estimate the carbon stock of the savanna formations of the transition.