Banca de DEFESA: ARIANE CRISTINE REBELO LIMA

Ecosystem services. Forestry concessions. Sustainable forest management. Brazilian carbon market. Environmental policies.

Ecosystem services. Forestry concessions. Sustainable forest management.
Brazilian carbon market. Environmental policies.

Brazil has become the target of discussions about climate change due to its extensive area of
Amazon forest and is included in the voluntary carbon market through Clean Development
Mechanism projects, such as REDD+. In order to develop environmental policies aimed at the
reduction and emissions market of greenhouse gases, Law No. 14,590/2023 was regulated,
allowing the trading of carbon credits in public forests. Since biomass production and carbon
storage are indirect services provided by the forest, the estimation of these stocks is essential
in the development of public policies that govern the carbon credits market. Thus, the
objective of this work was to estimate biomass and forest carbon stocks in a managed area to
promote payments for environmental services through carbon credits, in accordance with
public policy instruments. In this research, data from pre- and post-exploratory forest
inventories of 16 permanent plots were used, located in Annual Production Units 2, 3 and 5,
in the Forest Management Unit III in the Jamari National Forest, in Rondônia. This data
comes from the project “Monitoring of arboreal vegetation in a forest concession area in the
Jamari National Forest, Rondônia”, carried out for 10 years by the Laboratory of Ecology and
Management of Natural Forests (Lemaflon/Unir). The first forest inventory of the plots was
carried out before exploration, with the aim of evaluating the structure of the forest without
wood cutting intervention; the second one year after the end of exploration activities, in order
to assess the damage to the structure; and the third, five years after the second inventory, in
order to evaluate the recovery of vegetation based on the dynamics of the forest. Biomass,
carbon and carbon dioxide equivalent stocks were estimated from single-entry allometric
equations. The Annual Periodic Increment was generated in diameter classes with 10cm
intervals, for the period of five years (second and third inventory). To analyze Law No.
14,590/2023, descriptive research was carried out, based on documentary analysis of
Brazilian public policy instruments that involve the sale of carbon credits. Biomass and
carbon stocks showed a positive balance (150.97 Mg.ha -1 .year -1 and 73.22 Mg.ha -1 .year -1 ,
respectively) in the third inventory. The annual periodic increases in biomass and carbon were
greater in classes from 60-70cm. The equivalent carbon dioxide stock was 1558.92
Mg.CO 2eq .ha -1 , denoting an estimated gross revenue of R$ 38,583.27 in five years. Finally,
when relating the assumptions of Law No. 14,590/2023 with the study area, it is inferred that
carbon credit trading can be used in the Jamari-RO National Forest, as it serves the generation
of credits, promoting payments for environmental services.