Volume equation as basis of community forest management in Anapu, Pará State, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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/721 |
Resumo: | The community forest management in settlement areas, in Pará, needs tools that provide reliable information about wood potential in the area, as volume equations. Five volumetric models of simple entrance and five of double entrance were adjusted to estimate the wood volume of standing trees in the Project of sustainable development Virola-Jatobá in Anapu, Pará State, Brazil. The trees were cubed using Smalian method. The diameter at 1.3 m above soil level was measured in 172 individuals from 25 species with commercial interest by the community. The diameters ranged from 60 to 120 cm and commercial height varied from 5.24 m to 35 m. The statistic criteria used to select the best volume model of simple or double entrance was adjusted coefficient of determination (R2aj), standard error of estimate (Sxyr), coefficient of variation (CV), average deviation percentage (ADP) and graphic residual analysis. Chi-square test was used to validate the best models. Husch model presented the best estimative of wood volume in standing trees in the studied area, through the equation logv = 0,7974 + 4,4294logd. This equation does not use the commercial height variable, so it field inventory cost less and avoid mistakes from the estimation of this variable. |
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Volume equation as basis of community forest management in Anapu, Pará State, BrazilEquação de volume para apoio ao manejo comunitário de empreendimento florestal em Anapu, ParáAssentamentoFloresta AmazônicaModelo HuschSettlementtAmazonia forestHusch modelThe community forest management in settlement areas, in Pará, needs tools that provide reliable information about wood potential in the area, as volume equations. Five volumetric models of simple entrance and five of double entrance were adjusted to estimate the wood volume of standing trees in the Project of sustainable development Virola-Jatobá in Anapu, Pará State, Brazil. The trees were cubed using Smalian method. The diameter at 1.3 m above soil level was measured in 172 individuals from 25 species with commercial interest by the community. The diameters ranged from 60 to 120 cm and commercial height varied from 5.24 m to 35 m. The statistic criteria used to select the best volume model of simple or double entrance was adjusted coefficient of determination (R2aj), standard error of estimate (Sxyr), coefficient of variation (CV), average deviation percentage (ADP) and graphic residual analysis. Chi-square test was used to validate the best models. Husch model presented the best estimative of wood volume in standing trees in the studied area, through the equation logv = 0,7974 + 4,4294logd. This equation does not use the commercial height variable, so it field inventory cost less and avoid mistakes from the estimation of this variable.O manejo florestal comunitário em áreas de assentamento, no Pará, necessita de ferramentas que forneçam informações confiáveis sobre o potencial madeireiro da área, como equações de volume. Foram ajustados cinco modelos volumétricos de simples entrada e cinco de dupla entrada para estimar o volume de madeira em pé no Projeto de Desenvolvimento Sustentável Virola-Jatobá em Anapu, Pará. Foram cubados, pelo método de Smalian, 172 indivíduos com diâmetro tomado a 1,30 m do solo de 60 a 120 cm e altura comercial de 5,24 a 35 m, de 25 espécies de interesse comercial da comunidade. Utilizaram-se os critérios estatísticos coeficiente de determinação ajustado (R2aj), erro padrão da estimativa (Sxyr), coeficiente de variação (CV), desvio médio percentual (DMP) e a análise gráfica de resíduos para selecionar o melhor modelo de simples e de dupla entrada. O Teste do Qui-quadrado foi utilizado para validar os melhores modelos. O modelo de Husch foi confirmado para estimar o volume de madeira em pé na área de estudo, pela equação logv = 0,7974 + 4,4294logd. Essa equação não utiliza a variável altura comercial, por isso pode gerar menos custos na atividade de inventário e evitar erros que provém da estimativa dessa variável.Embrapa Florestas2014-12-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/72110.4336/2014.pfb.34.80.721Pesquisa Florestal Brasileira; v. 34 n. 80 (2014): out./dez.; 321-329Pesquisa Florestal Brasileira; Vol. 34 No. 80 (2014): out./dez.; 321-3291983-26051809-3647reponame:Pesquisa Florestal Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/721/388Copyright (c) 2014 Wallacy Ferreira Barreto, Fábio Miranda Leão, Marlon Costa de Menezes, Deivison Venicio Souzahttps://creativecommons.org/licenses/by-nc-nd/4.0info:eu-repo/semantics/openAccessBarreto, Wallacy FerreiraLeão, Fábio Mirandade Menezes, Marlon CostaSouza, Deivison Venicio2017-04-28T12:49:00Zoai:pfb.cnpf.embrapa.br/pfb:article/721Revistahttps://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:2017-04-28T12:49Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Volume equation as basis of community forest management in Anapu, Pará State, Brazil Equação de volume para apoio ao manejo comunitário de empreendimento florestal em Anapu, Pará |
title |
Volume equation as basis of community forest management in Anapu, Pará State, Brazil |
spellingShingle |
Volume equation as basis of community forest management in Anapu, Pará State, Brazil Barreto, Wallacy Ferreira Assentamento Floresta Amazônica Modelo Husch Settlementt Amazonia forest Husch model |
title_short |
Volume equation as basis of community forest management in Anapu, Pará State, Brazil |
title_full |
Volume equation as basis of community forest management in Anapu, Pará State, Brazil |
title_fullStr |
Volume equation as basis of community forest management in Anapu, Pará State, Brazil |
title_full_unstemmed |
Volume equation as basis of community forest management in Anapu, Pará State, Brazil |
title_sort |
Volume equation as basis of community forest management in Anapu, Pará State, Brazil |
author |
Barreto, Wallacy Ferreira |
author_facet |
Barreto, Wallacy Ferreira Leão, Fábio Miranda de Menezes, Marlon Costa Souza, Deivison Venicio |
author_role |
author |
author2 |
Leão, Fábio Miranda de Menezes, Marlon Costa Souza, Deivison Venicio |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Barreto, Wallacy Ferreira Leão, Fábio Miranda de Menezes, Marlon Costa Souza, Deivison Venicio |
dc.subject.por.fl_str_mv |
Assentamento Floresta Amazônica Modelo Husch Settlementt Amazonia forest Husch model |
topic |
Assentamento Floresta Amazônica Modelo Husch Settlementt Amazonia forest Husch model |
description |
The community forest management in settlement areas, in Pará, needs tools that provide reliable information about wood potential in the area, as volume equations. Five volumetric models of simple entrance and five of double entrance were adjusted to estimate the wood volume of standing trees in the Project of sustainable development Virola-Jatobá in Anapu, Pará State, Brazil. The trees were cubed using Smalian method. The diameter at 1.3 m above soil level was measured in 172 individuals from 25 species with commercial interest by the community. The diameters ranged from 60 to 120 cm and commercial height varied from 5.24 m to 35 m. The statistic criteria used to select the best volume model of simple or double entrance was adjusted coefficient of determination (R2aj), standard error of estimate (Sxyr), coefficient of variation (CV), average deviation percentage (ADP) and graphic residual analysis. Chi-square test was used to validate the best models. Husch model presented the best estimative of wood volume in standing trees in the studied area, through the equation logv = 0,7974 + 4,4294logd. This equation does not use the commercial height variable, so it field inventory cost less and avoid mistakes from the estimation of this variable. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-12-30 |
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/721 10.4336/2014.pfb.34.80.721 |
url |
https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/721 |
identifier_str_mv |
10.4336/2014.pfb.34.80.721 |
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/721/388 |
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. 34 n. 80 (2014): out./dez.; 321-329 Pesquisa Florestal Brasileira; Vol. 34 No. 80 (2014): out./dez.; 321-329 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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1783370934994862080 |