Carbon sink dynamics and stock in a managed forest at the Chico Mendes Extractive Reserve
DOI:
https://doi.org/10.37002/biodiversidadebrasileira.v15i3.2726Keywords:
Rainforest , forest biomass, growth rate, mortality rate, carbon sequestrationAbstract
Analyzing biomass stocks in tropical forests allows us to understand how these ecosystems respond to natural and anthropogenic changes, which are fundamental for sustainable management. This study analyzed the managed forest and carbon stock dynamics in the Chico Mendes Extractive Reserve, Acre, Brazil. Forest inventories conducted between 2011 and 2015 assessed variations in carbon stock and vegetation structure. In the first inventory, 20,997 individuals from 98 species were sampled, of which 8,440 were exploitable. Between 2013 and 2015, biomass increased by 3.39%, while tree loss exceeded recruitment by 0.99%, resulting in a net increase of 17.99 Mg C in carbon stock. The families Fabaceae, Moraceae, Lecythidaceae, and Burseraceae contributed the most to biomass and carbon fixation. The carbon stock exhibited values of 101.91 Mg ha⁻¹ in 2013 and 105.37 Mg ha⁻¹ in 2015, with an increase of 3.46 Mg ha⁻¹ over this period. Although biomass increased, tree loss highlights the need for conservation strategies to balance exploitation and recovery. Tropical forests play a fundamental role in mitigating climate change, regulating the water cycle, and maintaining biodiversity. Sustainable forest management is essential to ensure the continuity of these ecosystem services and the long-term stability of forest ecosystems.
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