Equations for calculation of volume and weight of aerial compartiments of eight-year-old Grevillea robusta (Cunn.) trees

Detalhes bibliográficos
Autor(a) principal: Ferreira, Carlos Alberto
Data de Publicação: 2004
Outros Autores: Martins, Emerson Gonçalves, Silva, Helton Damin da
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Florestal Brasileira (Online)
Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1292
Resumo: This paper presents results obtained for fitting equations to estimate volume and weight of aerial compartments of Grevillea robusta trees. Twelve trees representing four provenances were collected from an eight-year-old provenance trial located in the municipality of Anhembi, State of São Paulo. The trunks of the trees were segmented until the minimum diameter of 5 cm. The heartwood was measured till the height it was possible to be distinguished in the tree. Allometric models were the most suitable for this paper proposes. The inclusion of the combined variable (total height multiplied by the diameter at breast height) contributed to a better adjustment of most equations. The standard errors of the estimates were relatively high for heartwood and bark weight. It is worthwhile to point out the high correlation obtained among the weight of the leaves and sapwood weight. It deserves additional research face the high importance of the weight of the leaves to physiologically based growth models and practical difficulties of its estimation. The coefficients obtained for all models and variables studied are presented in the text.
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spelling Equations for calculation of volume and weight of aerial compartiments of eight-year-old Grevillea robusta (Cunn.) treesEquações para cálculo do volume e peso de compartimentos aéreos de árvores de Grevillea robusta (Cunn.) aos oito anos de idade.VolumePesoCerneAlburnoRamosFolhasVolumeWeightHeartwoodSapwoodBranchesLeavesThis paper presents results obtained for fitting equations to estimate volume and weight of aerial compartments of Grevillea robusta trees. Twelve trees representing four provenances were collected from an eight-year-old provenance trial located in the municipality of Anhembi, State of São Paulo. The trunks of the trees were segmented until the minimum diameter of 5 cm. The heartwood was measured till the height it was possible to be distinguished in the tree. Allometric models were the most suitable for this paper proposes. The inclusion of the combined variable (total height multiplied by the diameter at breast height) contributed to a better adjustment of most equations. The standard errors of the estimates were relatively high for heartwood and bark weight. It is worthwhile to point out the high correlation obtained among the weight of the leaves and sapwood weight. It deserves additional research face the high importance of the weight of the leaves to physiologically based growth models and practical difficulties of its estimation. The coefficients obtained for all models and variables studied are presented in the text.Este trabalho relata a obtenção de equações para a estimativa indireta de volume e peso de compartimentos aéreos de árvores de Grevillea robusta, com base em variáveis dendrométricas de fácil obtenção. Para tanto, foram coletadas doze árvores com idade de oito anos, pertencentes a quatro procedências distintas, integrantes de um ensaio localizado em Anhembi, Estado de São Paulo. Os fustes das árvores foram segmentados em toretes de um metro até o limite mínimo de diâmetro de cinco centímetros. A altura do cerne nas árvores foi determinada através de cortes sucessivos até quando o cerne tornava-se indistinto. O compartimento da copa das árvores foi subdividido em galhos e ramos. Os modelos alométricos mostraram-se adequados para a obtenção das estimativas de volume e peso de compartimentos aéreos de árvores de Grevillea robusta. A distribuição de resíduos equilibrada não denotou qualquer tendenciosidade que tornasse necessário o balanceamento, ou transformação dos dados, além da transformação logarítmica das variáveis. A inclusão da variável combinada, altura total, multiplicada pelo diâmetro à altura do peito, elevado ao quadrado (H.D2), possibilitou ajustes mais precisos para a maioria dos modelos propostos. Entretanto, os erros padrão das estimativas foram relativamente altos para o peso do cerne e o peso da casca. As correlações altas entre o peso do alburno, pesos da madeira com e sem casca e a altura total são interessantes do ponto de vista prático. Considerando-se que o mesmo não ocorreu para o peso do cerne, este poderá ser estimado satisfatoriamente pela diferença entre o peso da madeira sem casca e o peso do alburno. O peso das folhas apresenta alta correlação com o peso do alburno, significando que o peso das folhas pode ser estimado satisfatoriamente através dessa variável. Esta relação entre alburno e quantidade de folhas deve ser pesquisada mais detalhadamente pela importância de quantificações de copa para modelos fisiológicos. Os coeficientes das equações, obtidos para os diferentes modelos e compartimentos, são apresentados no texto.Embrapa Florestas2004-12-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1292Pesquisa Florestal Brasileira; n. 49 (2004): jul./dez.; 31-45Pesquisa Florestal Brasileira; No. 49 (2004): jul./dez.; 31-451983-26051809-3647reponame:Pesquisa Florestal Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1292/627Ferreira, Carlos AlbertoMartins, Emerson GonçalvesSilva, Helton Damin dainfo:eu-repo/semantics/openAccess2018-03-22T16:21:17Zoai:pfb.cnpf.embrapa.br/pfb:article/1292Revistahttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/PUBhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/oaipfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br1983-26051809-3647opendoar:2018-03-22T16:21:17Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Equations for calculation of volume and weight of aerial compartiments of eight-year-old Grevillea robusta (Cunn.) trees
Equações para cálculo do volume e peso de compartimentos aéreos de árvores de Grevillea robusta (Cunn.) aos oito anos de idade.
title Equations for calculation of volume and weight of aerial compartiments of eight-year-old Grevillea robusta (Cunn.) trees
spellingShingle Equations for calculation of volume and weight of aerial compartiments of eight-year-old Grevillea robusta (Cunn.) trees
Ferreira, Carlos Alberto
Volume
Peso
Cerne
Alburno
Ramos
Folhas
Volume
Weight
Heartwood
Sapwood
Branches
Leaves
title_short Equations for calculation of volume and weight of aerial compartiments of eight-year-old Grevillea robusta (Cunn.) trees
title_full Equations for calculation of volume and weight of aerial compartiments of eight-year-old Grevillea robusta (Cunn.) trees
title_fullStr Equations for calculation of volume and weight of aerial compartiments of eight-year-old Grevillea robusta (Cunn.) trees
title_full_unstemmed Equations for calculation of volume and weight of aerial compartiments of eight-year-old Grevillea robusta (Cunn.) trees
title_sort Equations for calculation of volume and weight of aerial compartiments of eight-year-old Grevillea robusta (Cunn.) trees
author Ferreira, Carlos Alberto
author_facet Ferreira, Carlos Alberto
Martins, Emerson Gonçalves
Silva, Helton Damin da
author_role author
author2 Martins, Emerson Gonçalves
Silva, Helton Damin da
author2_role author
author
dc.contributor.author.fl_str_mv Ferreira, Carlos Alberto
Martins, Emerson Gonçalves
Silva, Helton Damin da
dc.subject.por.fl_str_mv Volume
Peso
Cerne
Alburno
Ramos
Folhas
Volume
Weight
Heartwood
Sapwood
Branches
Leaves
topic Volume
Peso
Cerne
Alburno
Ramos
Folhas
Volume
Weight
Heartwood
Sapwood
Branches
Leaves
description This paper presents results obtained for fitting equations to estimate volume and weight of aerial compartments of Grevillea robusta trees. Twelve trees representing four provenances were collected from an eight-year-old provenance trial located in the municipality of Anhembi, State of São Paulo. The trunks of the trees were segmented until the minimum diameter of 5 cm. The heartwood was measured till the height it was possible to be distinguished in the tree. Allometric models were the most suitable for this paper proposes. The inclusion of the combined variable (total height multiplied by the diameter at breast height) contributed to a better adjustment of most equations. The standard errors of the estimates were relatively high for heartwood and bark weight. It is worthwhile to point out the high correlation obtained among the weight of the leaves and sapwood weight. It deserves additional research face the high importance of the weight of the leaves to physiologically based growth models and practical difficulties of its estimation. The coefficients obtained for all models and variables studied are presented in the text.
publishDate 2004
dc.date.none.fl_str_mv 2004-12-30
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1292
url https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1292
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1292/627
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Embrapa Florestas
publisher.none.fl_str_mv Embrapa Florestas
dc.source.none.fl_str_mv Pesquisa Florestal Brasileira; n. 49 (2004): jul./dez.; 31-45
Pesquisa Florestal Brasileira; No. 49 (2004): jul./dez.; 31-45
1983-2605
1809-3647
reponame:Pesquisa Florestal Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Florestal Brasileira (Online)
collection Pesquisa Florestal Brasileira (Online)
repository.name.fl_str_mv Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br
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