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dc.contributor.authorSantos, Mario Lima dos-
dc.contributor.authorMiguel, Eder Pereira-
dc.contributor.authorBiali, Leonardo Job-
dc.contributor.authorSouza, Hallefy Junio de-
dc.contributor.authorSantos, Cassio Rafael Costa dos-
dc.contributor.authorMatricardi, Eraldo Aparecido Trondoli-
dc.date.accessioned2024-03-26T12:12:39Z-
dc.date.available2024-03-26T12:12:39Z-
dc.date.issued2023-09-28-
dc.identifier.citationSANTOS, Mario Lima dos et al. The effect of age on the evolution of the stem profile and heartwood proportion of teak clonal trees in the brazilian amazon. Forests, [S.l.], v. 14, n. 10, 28 set. 2023. DOI: https://doi.org/10.3390/f14101962. Disponível em: https://www.mdpi.com/1999-4907/14/10/1962. Acesso em: 25 março 2024.pt_BR
dc.identifier.urihttp://repositorio2.unb.br/jspui/handle/10482/48035-
dc.language.isoengpt_BR
dc.publisherMDPIpt_BR
dc.rightsAcesso Abertopt_BR
dc.titleThe effect of age on the evolution of the stem profile and heartwood proportion of teak clonal trees in the Brazilian Amazonpt_BR
dc.typeArtigopt_BR
dc.subject.keywordÁrvores - anatomiapt_BR
dc.subject.keywordÁrvores - Amazôniapt_BR
dc.subject.keywordTecapt_BR
dc.rights.license© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).pt_BR
dc.identifier.doihttps://doi.org/10.3390/f14101962pt_BR
dc.description.abstract1Stem profile modeling is crucial in the forestry sector, particularly for commercially valuable species like teak (Tectona grandis Linn F.), whose value depends on its stem dimensions, heartwood proportion, and age. We proposed a nonlinear mixed-effect model to describe the evolution of the stem and heartwood profiles of clonal teak trees with ages between 4 and 12 years in the Brazilian Amazon. Tapering models were used to estimate the bark, bark-free, and heartwood diameters. Dummy variables were included in each tapering model to estimate each type of diameter and enable compatibility. We used mixed models with age as a random effect in order to improve the accuracy. The Demaerschalk model provided the most accurate and compatible estimates for all three types of stem diameter. Also, age as a random effect significantly improved the model’s accuracy by 7.2%. We observed a progressive increase in the heartwood proportion (14% to 34%) with advancing age, while the proportions of bark (23% to 20%) and sapwood (63% to 45%) showed inverse behavior. The growth rate of the heartwood differed from that of the bark volume, emphasizing the importance of considering the age of heartwood maximization when determining the cutting cycle of the species.pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-1679-9796pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-6259-4594pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-3274-1108pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9356-0186pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-5323-6100pt_BR
dc.contributor.affiliationUniversity of Brasilia, Campus Universitário Darcy Ribeiro, Department of Forest Sciencespt_BR
dc.contributor.affiliationUniversity of Brasilia, Campus Universitário Darcy Ribeiro, Department of Forest Sciencespt_BR
dc.contributor.affiliationUniversity of Brasilia, Campus Universitário Darcy Ribeiro, Department of Forest Sciencespt_BR
dc.contributor.affiliationUniversity of Brasilia, Campus Universitário Darcy Ribeiro, Department of Forest Sciencespt_BR
dc.contributor.affiliationFederal Rural University of Amazonia, Capitão Poço Campus, Department of Forestry Engineeringpt_BR
dc.contributor.affiliationUniversity of Brasilia, Campus Universitário Darcy Ribeiro, Department of Forest Sciencespt_BR
dc.description.unidadeFaculdade de Tecnologia (FT)pt_BR
dc.description.unidadeDepartamento de Engenharia Florestal (FT EFL)pt_BR
dc.description.ppgPrograma de Pós-Graduação em Ciências Florestaispt_BR
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