Lana, Mayara Dalla creator Ferreira, Rinaldo Luiz Caraciolo creator Silva, José Antônio Aleixo da creator Duda, Gustavo Pereira creator Cespedes, German Hugo Gutierrez creator text periodical abstract or summary bl. continuing eng ABSTRACT The aim of this study was to determine the carbon content (C) in stem, leaves and thin and thick branches of eight species in an area of Caatinga, municipality of Floresta, Pernambuco, Brazil. To do so, dry biomass samples of at least 15 trees distributed into five diametric classes collected from the study area and fractionated in laboratory were used for each of the eight evaluated species. Carbon content was determined using CHNS/O elemental analyzer. Average carbon content of 46.4% is recommended for Anadenanthera colubrina, Aspidosperma pyrifolium, Bauhinia cheilantha, Cnidoscolus quercifolius, Mimosa ophthalmocentra and Mimosa tenuiflora, without need for specific values for each compartment. Croton heliotropiifolius and Poincianella bracteosa require distinct values per compartment for individuals in order to avoid trends in carbon stock estimates. Keywords: climate change, carbon projects, sustainable management. Publicação on-line; 36 ref.; 5 tables; 1 illus.; Summary (En) CARBONO CAATINGA MUDANÇA CLIMÁTICA SUSTENTABILIDADE Rio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994 2025-0450 1415-0980 / ISSN 2179-8087 0nline BR2026000332 v. 26(2) p. 1-11; (2019) https://www.scielo.br/j/floram/a/gXb3trmqzrfHLLrTycYD7rh/?format=pdf&lang=en https://www.scielo.br/j/floram/a/gXb3trmqzrfHLLrTycYD7rh/?format=pdf&lang=en BR-BrBNA 260327 20260327143540.0 eng