THE ACCURACY OF METHODS FOR ESTIMATING COMMERCIAL VOLUME OF Eucalyptus sp. CLONE WOOD

Detalhes bibliográficos
Autor(a) principal: Thiersch, Cláudio Roberto
Data de Publicação: 2015
Outros Autores: Scolforo, José Roberto, Oliveira, Antônio Donizette de, Maestri, Romualdo, Dehon, Gabriel
Tipo de documento: Artigo
Idioma: por
Título da fonte: Cerne (Online)
Texto Completo: https://cerne.ufla.br/site/index.php/CERNE/article/view/412
Resumo: This study aimed at evaluating the precision and the accuracy of the following methods: Two diameters, geometric method, single entry equation, double entry equation associated or not with ipsometric relation in the estimation of volume, for defining a precise and low cost strategy for trials both for individual trees and for forestry inventory parcels. Data base used encompassed 36 parcels of 400 m2. Around the parcels, 216 trees were sealed. Two clones (hybrid of E. grandis and E. urophylla), at the ages of 3; 4, 5 and 6 years, belonging to three different sites of a farm owned by Aracruz Celulose S. A., in East Brazil. The single entry method and the method of the two diameters should not be used for determining volume, if high precision is sought. The double entry method, with real total height, was precise in evaluating volume; however it was not exact enough in all site index situations. The geometric method was precise and exact for the two clones for all ages and site index studied, when the diameters were measured at 0.1m, 1.3m of height and the angular coefficients were estimated, however it was not exact enough for all situations studied. The diameters mensuration at 0.1m, 1.3m and (ht-2)/2 of height, of a single tree in each diametric class, for each site-age interaction, was sufficient for allowing precise estimation of volume of the remaining trees, according to the geometric method, in its original or modified form, associated to the estimative equations of the angular coefficients.
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spelling THE ACCURACY OF METHODS FOR ESTIMATING COMMERCIAL VOLUME OF Eucalyptus sp. CLONE WOODTwo diameter methodgeometric methodsingle entry equationdouble entry equationThis study aimed at evaluating the precision and the accuracy of the following methods: Two diameters, geometric method, single entry equation, double entry equation associated or not with ipsometric relation in the estimation of volume, for defining a precise and low cost strategy for trials both for individual trees and for forestry inventory parcels. Data base used encompassed 36 parcels of 400 m2. Around the parcels, 216 trees were sealed. Two clones (hybrid of E. grandis and E. urophylla), at the ages of 3; 4, 5 and 6 years, belonging to three different sites of a farm owned by Aracruz Celulose S. A., in East Brazil. The single entry method and the method of the two diameters should not be used for determining volume, if high precision is sought. The double entry method, with real total height, was precise in evaluating volume; however it was not exact enough in all site index situations. The geometric method was precise and exact for the two clones for all ages and site index studied, when the diameters were measured at 0.1m, 1.3m of height and the angular coefficients were estimated, however it was not exact enough for all situations studied. The diameters mensuration at 0.1m, 1.3m and (ht-2)/2 of height, of a single tree in each diametric class, for each site-age interaction, was sufficient for allowing precise estimation of volume of the remaining trees, according to the geometric method, in its original or modified form, associated to the estimative equations of the angular coefficients.CERNECERNE2015-09-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://cerne.ufla.br/site/index.php/CERNE/article/view/412CERNE; Vol. 12 No. 2 (2006); 167-181CERNE; v. 12 n. 2 (2006); 167-1812317-63420104-7760reponame:Cerne (Online)instname:Universidade Federal de Lavras (UFLA)instacron:UFLAporhttps://cerne.ufla.br/site/index.php/CERNE/article/view/412/353Copyright (c) 2015 CERNEinfo:eu-repo/semantics/openAccessThiersch, Cláudio RobertoScolforo, José RobertoOliveira, Antônio Donizette deMaestri, RomualdoDehon, Gabriel2015-10-22T10:20:18Zoai:cerne.ufla.br:article/412Revistahttps://cerne.ufla.br/site/index.php/CERNEPUBhttps://cerne.ufla.br/site/index.php/CERNE/oaicerne@dcf.ufla.br||cerne@dcf.ufla.br2317-63420104-7760opendoar:2024-05-21T19:53:49.579113Cerne (Online) - Universidade Federal de Lavras (UFLA)true
dc.title.none.fl_str_mv THE ACCURACY OF METHODS FOR ESTIMATING COMMERCIAL VOLUME OF Eucalyptus sp. CLONE WOOD
title THE ACCURACY OF METHODS FOR ESTIMATING COMMERCIAL VOLUME OF Eucalyptus sp. CLONE WOOD
spellingShingle THE ACCURACY OF METHODS FOR ESTIMATING COMMERCIAL VOLUME OF Eucalyptus sp. CLONE WOOD
Thiersch, Cláudio Roberto
Two diameter method
geometric method
single entry equation
double entry equation
title_short THE ACCURACY OF METHODS FOR ESTIMATING COMMERCIAL VOLUME OF Eucalyptus sp. CLONE WOOD
title_full THE ACCURACY OF METHODS FOR ESTIMATING COMMERCIAL VOLUME OF Eucalyptus sp. CLONE WOOD
title_fullStr THE ACCURACY OF METHODS FOR ESTIMATING COMMERCIAL VOLUME OF Eucalyptus sp. CLONE WOOD
title_full_unstemmed THE ACCURACY OF METHODS FOR ESTIMATING COMMERCIAL VOLUME OF Eucalyptus sp. CLONE WOOD
title_sort THE ACCURACY OF METHODS FOR ESTIMATING COMMERCIAL VOLUME OF Eucalyptus sp. CLONE WOOD
author Thiersch, Cláudio Roberto
author_facet Thiersch, Cláudio Roberto
Scolforo, José Roberto
Oliveira, Antônio Donizette de
Maestri, Romualdo
Dehon, Gabriel
author_role author
author2 Scolforo, José Roberto
Oliveira, Antônio Donizette de
Maestri, Romualdo
Dehon, Gabriel
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Thiersch, Cláudio Roberto
Scolforo, José Roberto
Oliveira, Antônio Donizette de
Maestri, Romualdo
Dehon, Gabriel
dc.subject.por.fl_str_mv Two diameter method
geometric method
single entry equation
double entry equation
topic Two diameter method
geometric method
single entry equation
double entry equation
description This study aimed at evaluating the precision and the accuracy of the following methods: Two diameters, geometric method, single entry equation, double entry equation associated or not with ipsometric relation in the estimation of volume, for defining a precise and low cost strategy for trials both for individual trees and for forestry inventory parcels. Data base used encompassed 36 parcels of 400 m2. Around the parcels, 216 trees were sealed. Two clones (hybrid of E. grandis and E. urophylla), at the ages of 3; 4, 5 and 6 years, belonging to three different sites of a farm owned by Aracruz Celulose S. A., in East Brazil. The single entry method and the method of the two diameters should not be used for determining volume, if high precision is sought. The double entry method, with real total height, was precise in evaluating volume; however it was not exact enough in all site index situations. The geometric method was precise and exact for the two clones for all ages and site index studied, when the diameters were measured at 0.1m, 1.3m of height and the angular coefficients were estimated, however it was not exact enough for all situations studied. The diameters mensuration at 0.1m, 1.3m and (ht-2)/2 of height, of a single tree in each diametric class, for each site-age interaction, was sufficient for allowing precise estimation of volume of the remaining trees, according to the geometric method, in its original or modified form, associated to the estimative equations of the angular coefficients.
publishDate 2015
dc.date.none.fl_str_mv 2015-09-21
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://cerne.ufla.br/site/index.php/CERNE/article/view/412
url https://cerne.ufla.br/site/index.php/CERNE/article/view/412
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://cerne.ufla.br/site/index.php/CERNE/article/view/412/353
dc.rights.driver.fl_str_mv Copyright (c) 2015 CERNE
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2015 CERNE
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv CERNE
CERNE
publisher.none.fl_str_mv CERNE
CERNE
dc.source.none.fl_str_mv CERNE; Vol. 12 No. 2 (2006); 167-181
CERNE; v. 12 n. 2 (2006); 167-181
2317-6342
0104-7760
reponame:Cerne (Online)
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Cerne (Online)
collection Cerne (Online)
repository.name.fl_str_mv Cerne (Online) - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv cerne@dcf.ufla.br||cerne@dcf.ufla.br
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