Non-segmented and segmented taper models to Tectona grandis in center-southern region of Mato Grosso
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
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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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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1783370933506932736 |