Estimativa de biomassa aérea e teor de carbono da espécie Rhizophora mangle L.

• Ano de defesa: 2012
• Autor(a) principal: Santos, Heide Vanessa Souza
• Orientador(a): Holanda, Francisco Sandro Rodrigues
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Sergipe
• Programa de Pós-Graduação: Pós-Graduação em Agroecossistemas
• País: BR
• Palavras-chave em Português: Modelos alométricos; Fitomassa florestal; Manguezal
• Palavras-chave em Inglês: Allometric models; Biomass forest; Mangrove
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
• Link de acesso: https://ri.ufs.br/handle/riufs/6642

The interest in quantifying mangrove forest biomass has increased in recent years due to the potential that tropical forests have in accumulating atmospheric carbon. The high organic carbon in mangrove attributes an important role in the estimation of global carbon and the processes of climate change mitigation. The objective of this study was to develop allometric equations for estimating the linear total aboveground biomass and plant compartments of Rhizophora mangle, and quantify the organic carbon present in the compartments of the plant on the estuary of the São Francisco river, located in Sergipe, Brazil. Using a destructive sample of 74 trees, linear models adjusted to estimate total biomass and species Rhizophora mangle compartment. Among the collected trees, 20 trees were selected for verification of the carbon in the compartments of the plant. To determine the levels of carbon in the plant, the method of Walkley-Black with external heat was used, consisting in the determination of organic carbon by oxidation with potassium dichromate in acid medium, with titration of excess dichromate. The regressions the data underwent logarithmic transformation that showed better adjustments, provides an estimation of the total plant biomass of 9395.24 ton of dry biomass, with a determination coefficient of approximately 0.99. A variation in the presence of biomass partition according to the structural development of trees was observed. There were low settings shown in the developed equations for the reproductive parts, attributed to the seasonal occurrence of the compartment. The study showed significant amounts of organic carbon stored in R. mangle (13.11 ton C ha-1) and in general, the woody compartments of the plant showed the highest percentage of carbon stored, especially for the trunk compartment. The generated data could contribute as a basis for future work in conservation ecosystem.