Heartwood and sapwood in eucalyptus trees: Non-conventional approach to wood quality
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/0001-3765201820160195 http://hdl.handle.net/11449/176275 |
Resumo: | This study evaluated the quality of heartwood and sapwood from mature trees of three species of Eucalyptus, by means of the qualification of their proportion, determination of basic and apparent density using non-destructive attenuation of gamma radiation technique and calculation of the density uniformity index. Six trees of each species (Eucalyptus grandis - 18 years old, Eucalyptus tereticornis - 35 years old and Corymbia citriodora - 28 years old) were used in the experimental program. The heartwood and sapwood were delimited by macroscopic analysis and the calculation of areas and percentage of heartwood and sapwood were performed using digital image. The uniformity index was calculated following methodology which numerically quantifies the dispersion of punctual density values of the wood around the mean density along the radius. The percentage of the heartwood was higher than the sapwood in all species studied. The density results showed no statistical difference between heartwood and sapwood. Differently from the density results, in all species studied there was statistical differences between uniformity indexes for heartwood and sapwood regions, making justifiable the inclusion of the density uniformity index as a quality parameter for Eucalyptus wood. |
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Heartwood and sapwood in eucalyptus trees: Non-conventional approach to wood qualityDensity uniformity indexEucalyptusGamma radiationImage analysisThis study evaluated the quality of heartwood and sapwood from mature trees of three species of Eucalyptus, by means of the qualification of their proportion, determination of basic and apparent density using non-destructive attenuation of gamma radiation technique and calculation of the density uniformity index. Six trees of each species (Eucalyptus grandis - 18 years old, Eucalyptus tereticornis - 35 years old and Corymbia citriodora - 28 years old) were used in the experimental program. The heartwood and sapwood were delimited by macroscopic analysis and the calculation of areas and percentage of heartwood and sapwood were performed using digital image. The uniformity index was calculated following methodology which numerically quantifies the dispersion of punctual density values of the wood around the mean density along the radius. The percentage of the heartwood was higher than the sapwood in all species studied. The density results showed no statistical difference between heartwood and sapwood. Differently from the density results, in all species studied there was statistical differences between uniformity indexes for heartwood and sapwood regions, making justifiable the inclusion of the density uniformity index as a quality parameter for Eucalyptus wood.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Universidade Estadual Paulista/UNESP Departamento de Engenharia Rural Fazenda Lageado, Rua José Barbosa de Barros, 1780Universidade Estadual Paulista/UNESP Departamento de Produção e Melhoramento Vegetal Fazenda Lageado, Rua José Barbosa de Barros, 1780Universidade Estadual Paulista/UNESP Departamento de Física e Biofísica, Rua Prof. Dr. Antonio Celso Wagner Zanin, s/nUniversidade Estadual Paulista/UNESP Departamento de Engenharia Rural Fazenda Lageado, Rua José Barbosa de Barros, 1780Universidade Estadual Paulista/UNESP Departamento de Produção e Melhoramento Vegetal Fazenda Lageado, Rua José Barbosa de Barros, 1780Universidade Estadual Paulista/UNESP Departamento de Física e Biofísica, Rua Prof. Dr. Antonio Celso Wagner Zanin, s/nFAPESP: 2012/18704-1Universidade Estadual Paulista (Unesp)Cherelli, Sabrina Galetti. [UNESP]Sartori, Maria Márcia P. [UNESP]Próspero, André G. [UNESP]Ballarin, Adriano W. [UNESP]2018-12-11T17:19:54Z2018-12-11T17:19:54Z2018-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article425-438application/pdfhttp://dx.doi.org/10.1590/0001-3765201820160195Anais da Academia Brasileira de Ciencias, v. 90, n. 1, p. 425-438, 2018.1678-26900001-3765http://hdl.handle.net/11449/17627510.1590/0001-3765201820160195S0001-376520180001004252-s2.0-85046508527S0001-37652018000100425.pdf52133151997352110000-0002-1517-739XScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnais da Academia Brasileira de Ciencias0,4180,418info:eu-repo/semantics/openAccess2024-04-30T15:55:49Zoai:repositorio.unesp.br:11449/176275Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:00:47.572481Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Heartwood and sapwood in eucalyptus trees: Non-conventional approach to wood quality |
title |
Heartwood and sapwood in eucalyptus trees: Non-conventional approach to wood quality |
spellingShingle |
Heartwood and sapwood in eucalyptus trees: Non-conventional approach to wood quality Cherelli, Sabrina Galetti. [UNESP] Density uniformity index Eucalyptus Gamma radiation Image analysis |
title_short |
Heartwood and sapwood in eucalyptus trees: Non-conventional approach to wood quality |
title_full |
Heartwood and sapwood in eucalyptus trees: Non-conventional approach to wood quality |
title_fullStr |
Heartwood and sapwood in eucalyptus trees: Non-conventional approach to wood quality |
title_full_unstemmed |
Heartwood and sapwood in eucalyptus trees: Non-conventional approach to wood quality |
title_sort |
Heartwood and sapwood in eucalyptus trees: Non-conventional approach to wood quality |
author |
Cherelli, Sabrina Galetti. [UNESP] |
author_facet |
Cherelli, Sabrina Galetti. [UNESP] Sartori, Maria Márcia P. [UNESP] Próspero, André G. [UNESP] Ballarin, Adriano W. [UNESP] |
author_role |
author |
author2 |
Sartori, Maria Márcia P. [UNESP] Próspero, André G. [UNESP] Ballarin, Adriano W. [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Cherelli, Sabrina Galetti. [UNESP] Sartori, Maria Márcia P. [UNESP] Próspero, André G. [UNESP] Ballarin, Adriano W. [UNESP] |
dc.subject.por.fl_str_mv |
Density uniformity index Eucalyptus Gamma radiation Image analysis |
topic |
Density uniformity index Eucalyptus Gamma radiation Image analysis |
description |
This study evaluated the quality of heartwood and sapwood from mature trees of three species of Eucalyptus, by means of the qualification of their proportion, determination of basic and apparent density using non-destructive attenuation of gamma radiation technique and calculation of the density uniformity index. Six trees of each species (Eucalyptus grandis - 18 years old, Eucalyptus tereticornis - 35 years old and Corymbia citriodora - 28 years old) were used in the experimental program. The heartwood and sapwood were delimited by macroscopic analysis and the calculation of areas and percentage of heartwood and sapwood were performed using digital image. The uniformity index was calculated following methodology which numerically quantifies the dispersion of punctual density values of the wood around the mean density along the radius. The percentage of the heartwood was higher than the sapwood in all species studied. The density results showed no statistical difference between heartwood and sapwood. Differently from the density results, in all species studied there was statistical differences between uniformity indexes for heartwood and sapwood regions, making justifiable the inclusion of the density uniformity index as a quality parameter for Eucalyptus wood. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-11T17:19:54Z 2018-12-11T17:19:54Z 2018-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/0001-3765201820160195 Anais da Academia Brasileira de Ciencias, v. 90, n. 1, p. 425-438, 2018. 1678-2690 0001-3765 http://hdl.handle.net/11449/176275 10.1590/0001-3765201820160195 S0001-37652018000100425 2-s2.0-85046508527 S0001-37652018000100425.pdf 5213315199735211 0000-0002-1517-739X |
url |
http://dx.doi.org/10.1590/0001-3765201820160195 http://hdl.handle.net/11449/176275 |
identifier_str_mv |
Anais da Academia Brasileira de Ciencias, v. 90, n. 1, p. 425-438, 2018. 1678-2690 0001-3765 10.1590/0001-3765201820160195 S0001-37652018000100425 2-s2.0-85046508527 S0001-37652018000100425.pdf 5213315199735211 0000-0002-1517-739X |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Anais da Academia Brasileira de Ciencias 0,418 0,418 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
425-438 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128593733091328 |