A NEW APPROACH FOR THE GEOMETRIC METHOD USING THE PARABOLA INDEX METHOD
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência Florestal (Online) |
Texto Completo: | https://periodicos.ufsm.br/cienciaflorestal/article/view/8460 |
Resumo: | http://dx.doi.org/10.5902/198050988460The aim of this paper is to present a new approach for the geometric method, substituting the angular coefficient by the parable index in the generation of taper equations to estimate the volume of individual trees and to compare the volume estimates accomplished, starting from this new approach with the volume obtained by the rigorous cubage of eucalyptus clones. Starting from algebraic modifications in the parable index and considering the same measured points for the original geometric method, expression tapers were developed. Data of 48 plots with 1819 cubed trees, 349 were randomized for the evaluation of the new proposed approach. Two approaches using the parable index were proposed, firstly using two support diameters and secondly using one support diameter in the obtaining of the taper equations. The methods were applied in the other trees and the plot volumes were obtained and compared with the cubed plots volume. The results showed that differences do not exist between the volumes for the proposed methods and the volume rigorous cubage. Therefore, the methods can be used with safety in the forest inventories. |
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A NEW APPROACH FOR THE GEOMETRIC METHOD USING THE PARABOLA INDEX METHODUma nova abordagem para o método geométrico usando o índice da parábolavolumetaperforest inventoryvolumetaperinventário florestalhttp://dx.doi.org/10.5902/198050988460The aim of this paper is to present a new approach for the geometric method, substituting the angular coefficient by the parable index in the generation of taper equations to estimate the volume of individual trees and to compare the volume estimates accomplished, starting from this new approach with the volume obtained by the rigorous cubage of eucalyptus clones. Starting from algebraic modifications in the parable index and considering the same measured points for the original geometric method, expression tapers were developed. Data of 48 plots with 1819 cubed trees, 349 were randomized for the evaluation of the new proposed approach. Two approaches using the parable index were proposed, firstly using two support diameters and secondly using one support diameter in the obtaining of the taper equations. The methods were applied in the other trees and the plot volumes were obtained and compared with the cubed plots volume. The results showed that differences do not exist between the volumes for the proposed methods and the volume rigorous cubage. Therefore, the methods can be used with safety in the forest inventories.http://dx.doi.org/10.5902/198050988460O objetivo deste artigo é apresentar uma nova abordagem para o método geométrico, substituindo o coeficiente angular da reta pelo índice da parábola na geração de equações taper para estimar o volume de árvores individuais e comparar as estimativas de volume realizadas a partir desta nova abordagem com o volume obtido pela cubagem rigorosa de clones de eucalipto. A partir de modificações algébricas no índice da parábola e considerando os mesmos intervalos definidos para o método geométrico original, foram desenvolvidas expressões taper. De uma base de dados de 48 parcelas com 1819 árvores cubadas, 349 foram retiradas aleatoriamente para avaliação da nova abordagem proposta. Duas abordagens utilizando o índice da parábola foram propostas, uma usando dois diâmetros de apoio e outra usando um diâmetro de apoio na obtenção das equações taper. Os métodos foram então aplicados nas demais árvores amostradas e os volumes por parcela foram obtidos e comparados estatisticamente com o volume da parcela cubada. Os resultados mostraram que não existem diferenças entre os volumes estimados pelos métodos propostos e o volume da cubagem rigorosa. Portanto os mesmos podem ser usados com segurança nos inventários florestais.Universidade Federal de Santa Maria2013-03-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/846010.5902/198050988460Ciência Florestal; Vol. 23 No. 1 (2013); 261-271Ciência Florestal; v. 23 n. 1 (2013); 261-2711980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/8460/pdf_1Cabacinha, Christian DiasScolforo, José Roberto SoaresThiersch, Cláudio RobertoSales, Nilza de Lima PereiraCarvalho, Letícia Renata deinfo:eu-repo/semantics/openAccess2017-04-17T19:06:59Zoai:ojs.pkp.sfu.ca:article/8460Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2017-04-17T19:06:59Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
A NEW APPROACH FOR THE GEOMETRIC METHOD USING THE PARABOLA INDEX METHOD Uma nova abordagem para o método geométrico usando o índice da parábola |
title |
A NEW APPROACH FOR THE GEOMETRIC METHOD USING THE PARABOLA INDEX METHOD |
spellingShingle |
A NEW APPROACH FOR THE GEOMETRIC METHOD USING THE PARABOLA INDEX METHOD Cabacinha, Christian Dias volume taper forest inventory volume taper inventário florestal |
title_short |
A NEW APPROACH FOR THE GEOMETRIC METHOD USING THE PARABOLA INDEX METHOD |
title_full |
A NEW APPROACH FOR THE GEOMETRIC METHOD USING THE PARABOLA INDEX METHOD |
title_fullStr |
A NEW APPROACH FOR THE GEOMETRIC METHOD USING THE PARABOLA INDEX METHOD |
title_full_unstemmed |
A NEW APPROACH FOR THE GEOMETRIC METHOD USING THE PARABOLA INDEX METHOD |
title_sort |
A NEW APPROACH FOR THE GEOMETRIC METHOD USING THE PARABOLA INDEX METHOD |
author |
Cabacinha, Christian Dias |
author_facet |
Cabacinha, Christian Dias Scolforo, José Roberto Soares Thiersch, Cláudio Roberto Sales, Nilza de Lima Pereira Carvalho, Letícia Renata de |
author_role |
author |
author2 |
Scolforo, José Roberto Soares Thiersch, Cláudio Roberto Sales, Nilza de Lima Pereira Carvalho, Letícia Renata de |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Cabacinha, Christian Dias Scolforo, José Roberto Soares Thiersch, Cláudio Roberto Sales, Nilza de Lima Pereira Carvalho, Letícia Renata de |
dc.subject.por.fl_str_mv |
volume taper forest inventory volume taper inventário florestal |
topic |
volume taper forest inventory volume taper inventário florestal |
description |
http://dx.doi.org/10.5902/198050988460The aim of this paper is to present a new approach for the geometric method, substituting the angular coefficient by the parable index in the generation of taper equations to estimate the volume of individual trees and to compare the volume estimates accomplished, starting from this new approach with the volume obtained by the rigorous cubage of eucalyptus clones. Starting from algebraic modifications in the parable index and considering the same measured points for the original geometric method, expression tapers were developed. Data of 48 plots with 1819 cubed trees, 349 were randomized for the evaluation of the new proposed approach. Two approaches using the parable index were proposed, firstly using two support diameters and secondly using one support diameter in the obtaining of the taper equations. The methods were applied in the other trees and the plot volumes were obtained and compared with the cubed plots volume. The results showed that differences do not exist between the volumes for the proposed methods and the volume rigorous cubage. Therefore, the methods can be used with safety in the forest inventories. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-03-27 |
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://periodicos.ufsm.br/cienciaflorestal/article/view/8460 10.5902/198050988460 |
url |
https://periodicos.ufsm.br/cienciaflorestal/article/view/8460 |
identifier_str_mv |
10.5902/198050988460 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsm.br/cienciaflorestal/article/view/8460/pdf_1 |
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 |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Florestal; Vol. 23 No. 1 (2013); 261-271 Ciência Florestal; v. 23 n. 1 (2013); 261-271 1980-5098 0103-9954 reponame:Ciência Florestal (Online) instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Florestal (Online) |
collection |
Ciência Florestal (Online) |
repository.name.fl_str_mv |
Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br |
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1799944128574783488 |