Non-segmented and segmented taper models to Tectona grandis in center-southern region of Mato Grosso

Detalhes bibliográficos
Autor(a) principal: Favalessa, Cyro Matheus Cometti
Data de Publicação: 2012
Outros Autores: Ubialli, Jaime Antônio, Caldeira, Sidney Fernando, Drescher, Ronaldo
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/320
Resumo: The aim of this study was to compare the accuracy of the non-segmented polynomial models of Fifth degree and Hradetzky from 1976 and the segmented models of Max and Burkhart from 1976 and Clark et al. from 1991, in estimating diameters along the stem of Tectona grandis L.f., with adjustments for the full set of data and by diameter class in a 16 years old stand in the center–southern region of Mato Grosso State, Brazil. The database consisted of 114 trees, scaled by the modified Hohenadl method and distributed in diameter classes. The models adjustments were evaluated according to the adjusted coefficient of determination, standard eError of estimate and distribution of residuals. The accuracy of the models along the stem was evaluated by deviation, standard deviations of differences, sum of squares of relative residuals and percentage of residuals. The Hradetzky equation was the most accurate to estimate diameters along the stem of Tectona grandis, both for the total data set and for diameter classes, except Class 3, where Clark et al. model was more accurate.
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spelling Non-segmented and segmented taper models to Tectona grandis in center-southern region of Mato GrossoFunções de afilamento não segmentadas e segmentadas para Tectona grandis na região centro-sul matogrossenseTeakBole formRigorous tree scalingDiameter classesModelsTectona grandisForma do fusteCubagem rigorosaClasses de diâmetroModelos polinomiaisThe aim of this study was to compare the accuracy of the non-segmented polynomial models of Fifth degree and Hradetzky from 1976 and the segmented models of Max and Burkhart from 1976 and Clark et al. from 1991, in estimating diameters along the stem of Tectona grandis L.f., with adjustments for the full set of data and by diameter class in a 16 years old stand in the center–southern region of Mato Grosso State, Brazil. The database consisted of 114 trees, scaled by the modified Hohenadl method and distributed in diameter classes. The models adjustments were evaluated according to the adjusted coefficient of determination, standard eError of estimate and distribution of residuals. The accuracy of the models along the stem was evaluated by deviation, standard deviations of differences, sum of squares of relative residuals and percentage of residuals. The Hradetzky equation was the most accurate to estimate diameters along the stem of Tectona grandis, both for the total data set and for diameter classes, except Class 3, where Clark et al. model was more accurate.O objetivo deste estudo foi comparar a acurácia dos modelos polinomiais não segmentados do quinto grau e de Hradetzky de 1976 e os segmentados de Max e Burkhart de1976 e Clark et al. de 1991, na estimativa dos diâmetros ao longo do fuste de Tectona grandis L.f., com ajustes para o conjunto total dos dados e por classe de diâmetro, em um povoamento com 16 anos, na região centro- sul matogrossense. A base de dados foi composta por 114 árvores, cubadas pela metodologia de Hohenadl modificada e distribuídas em classes de diâmetro. O ajuste dos modelos foi avaliado em função do coeficiente de determinação corrigido, erro padrão da estimativa e pela distribuição dos resíduos em porcentagem. A acuracidade dos modelos ao longo do fuste foi avaliada pelo desvio, desvio padrão das diferenças, somatório de quadrado dos resíduos relativos e a porcentagem dos resíduos. A Equação de Hradetzky foi a que apresentou o melhor ajuste para estimar os diâmetros ao longo do fuste de Tectona grandis tanto para o conjunto total dos dados quanto para as classes de diâmetro com os menores valores nas estatísticas auxiliares, exceto na Classe 3, onde a equação selecionada foi a de Clark et al.Embrapa Florestas2012-12-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/32010.4336/2012.pfb.32.72.373Pesquisa Florestal Brasileira; v. 32 n. 72 (2012): out./dez.; 373Pesquisa Florestal Brasileira; Vol. 32 No. 72 (2012): out./dez.; 3731983-26051809-3647reponame:Pesquisa Florestal Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/320/pdf_13Copyright (c) 2012 Cyro Matheus Cometti Favalessa, Jaime Antônio Ubialli, Sidney Fernando Caldeira, Ronaldo Drescherhttps://creativecommons.org/licenses/by-nc-nd/4.0info:eu-repo/semantics/openAccessFavalessa, Cyro Matheus ComettiUbialli, Jaime AntônioCaldeira, Sidney FernandoDrescher, Ronaldo2017-04-28T12:55:53Zoai:pfb.cnpf.embrapa.br/pfb:article/320Revistahttps://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:2017-04-28T12:55:53Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Non-segmented and segmented taper models to Tectona grandis in center-southern region of Mato Grosso
Funções de afilamento não segmentadas e segmentadas para Tectona grandis na região centro-sul matogrossense
title Non-segmented and segmented taper models to Tectona grandis in center-southern region of Mato Grosso
spellingShingle Non-segmented and segmented taper models to Tectona grandis in center-southern region of Mato Grosso
Favalessa, Cyro Matheus Cometti
Teak
Bole form
Rigorous tree scaling
Diameter classes
Models
Tectona grandis
Forma do fuste
Cubagem rigorosa
Classes de diâmetro
Modelos polinomiais
title_short Non-segmented and segmented taper models to Tectona grandis in center-southern region of Mato Grosso
title_full Non-segmented and segmented taper models to Tectona grandis in center-southern region of Mato Grosso
title_fullStr Non-segmented and segmented taper models to Tectona grandis in center-southern region of Mato Grosso
title_full_unstemmed Non-segmented and segmented taper models to Tectona grandis in center-southern region of Mato Grosso
title_sort Non-segmented and segmented taper models to Tectona grandis in center-southern region of Mato Grosso
author Favalessa, Cyro Matheus Cometti
author_facet Favalessa, Cyro Matheus Cometti
Ubialli, Jaime Antônio
Caldeira, Sidney Fernando
Drescher, Ronaldo
author_role author
author2 Ubialli, Jaime Antônio
Caldeira, Sidney Fernando
Drescher, Ronaldo
author2_role author
author
author
dc.contributor.author.fl_str_mv Favalessa, Cyro Matheus Cometti
Ubialli, Jaime Antônio
Caldeira, Sidney Fernando
Drescher, Ronaldo
dc.subject.por.fl_str_mv Teak
Bole form
Rigorous tree scaling
Diameter classes
Models
Tectona grandis
Forma do fuste
Cubagem rigorosa
Classes de diâmetro
Modelos polinomiais
topic Teak
Bole form
Rigorous tree scaling
Diameter classes
Models
Tectona grandis
Forma do fuste
Cubagem rigorosa
Classes de diâmetro
Modelos polinomiais
description The aim of this study was to compare the accuracy of the non-segmented polynomial models of Fifth degree and Hradetzky from 1976 and the segmented models of Max and Burkhart from 1976 and Clark et al. from 1991, in estimating diameters along the stem of Tectona grandis L.f., with adjustments for the full set of data and by diameter class in a 16 years old stand in the center–southern region of Mato Grosso State, Brazil. The database consisted of 114 trees, scaled by the modified Hohenadl method and distributed in diameter classes. The models adjustments were evaluated according to the adjusted coefficient of determination, standard eError of estimate and distribution of residuals. The accuracy of the models along the stem was evaluated by deviation, standard deviations of differences, sum of squares of relative residuals and percentage of residuals. The Hradetzky equation was the most accurate to estimate diameters along the stem of Tectona grandis, both for the total data set and for diameter classes, except Class 3, where Clark et al. model was more accurate.
publishDate 2012
dc.date.none.fl_str_mv 2012-12-17
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/320
10.4336/2012.pfb.32.72.373
url https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/320
identifier_str_mv 10.4336/2012.pfb.32.72.373
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/320/pdf_13
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/4.0
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; v. 32 n. 72 (2012): out./dez.; 373
Pesquisa Florestal Brasileira; Vol. 32 No. 72 (2012): out./dez.; 373
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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