Diametric distribution of three species of Lecythidaceae after reduced impact logging in Eastern Amazon
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência Florestal (Online) |
Texto Completo: | https://periodicos.ufsm.br/cienciaflorestal/article/view/36011 |
Resumo: | Eschweilera coriacea, Eschweilera ovata and Lecythis idatimon are potentially commercial tropical species, therefore, widely harvested in Eastern Amazon. This research aims to evaluate the performance of three probabilistic density functions in the adjustment of the diametric distribution of three Lecythidaceae species, after one and ten years of the forest harvest, in a managed area, in the municipality of Moju, Pará state. Nine gaps proceeding from the reduced impact logging carried out in 1997 were studied. Around each gap, four 10 x 50 m strips were installed, starting from the edge of the gap into the forest, in the northern, southern, eastern and western directions, in a sampling of 1,8 ha. All individuals with DBH ≥ 5 cm were measured in two measurements (1998 and 2007). Probabilistic density functions Weibull 3P, Gamma and Weber were tested. For selecting the best model, we analyze the Kolmogorov - Smirnov D value (α = 0.05), standard error of the estimate (Syx%), the adjusted determination coefficient (adjusted R²) and the graphical analysis of the frequency curves estimated on the histogram of the observed ones. In both years, the Weibull 3P function presented the best fit and accuracy statistics to describe the diametric distribution of Eschweilera coriacea and Lecythis idatimon, and the Weber model for Eschweilera ovata. Gamma function was discarded for all species. The results indicate the non-feasibility of using the same function to describe different species, needing to consider the intrinsic characteristics to each species. |
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Diametric distribution of three species of Lecythidaceae after reduced impact logging in Eastern AmazonDistribuição diamétrica de três espécies de Lecythidaceae após exploração de impacto reduzido na Amazônia OrientalForest explorationTree diameterProbabilistic density functionExploração florestalDiâmetro arbóreoFunção de densidade probabilísticaEschweilera coriacea, Eschweilera ovata and Lecythis idatimon are potentially commercial tropical species, therefore, widely harvested in Eastern Amazon. This research aims to evaluate the performance of three probabilistic density functions in the adjustment of the diametric distribution of three Lecythidaceae species, after one and ten years of the forest harvest, in a managed area, in the municipality of Moju, Pará state. Nine gaps proceeding from the reduced impact logging carried out in 1997 were studied. Around each gap, four 10 x 50 m strips were installed, starting from the edge of the gap into the forest, in the northern, southern, eastern and western directions, in a sampling of 1,8 ha. All individuals with DBH ≥ 5 cm were measured in two measurements (1998 and 2007). Probabilistic density functions Weibull 3P, Gamma and Weber were tested. For selecting the best model, we analyze the Kolmogorov - Smirnov D value (α = 0.05), standard error of the estimate (Syx%), the adjusted determination coefficient (adjusted R²) and the graphical analysis of the frequency curves estimated on the histogram of the observed ones. In both years, the Weibull 3P function presented the best fit and accuracy statistics to describe the diametric distribution of Eschweilera coriacea and Lecythis idatimon, and the Weber model for Eschweilera ovata. Gamma function was discarded for all species. The results indicate the non-feasibility of using the same function to describe different species, needing to consider the intrinsic characteristics to each species.Eschweilera coriacea, Eschweilera ovata e Lecythis idatimon são espécies arbóreas tropicais potencialmente comerciais, portanto, amplamente colhidas na Amazônia Oriental. O objetivo deste trabalho foi avaliar o desempenho de três funções de densidade probabilísticas no ajuste da distribuição diamétrica de três espécies de Lecythidaceae, para o período entre um e dez anos após a colheita florestal, em área manejada, em Moju, Pará. Foram selecionadas nove clareiras provenientes da exploração de impacto reduzido realizada em 1997. Em torno de cada clareira foram instaladas quatro faixas de 10 x 50 m, começando da bordadura da clareira para dentro da floresta, nas direções norte, sul, leste e oeste, perfazendo uma amostragem de 1,8 ha. Foram mensurados todos os indivíduos com DAP ≥ 5 cm em duas medições (1998 e 2007). Foram testadas as funções de densidade probabilísticas Weibull 3P, Gamma e Weber. Para a seleção do melhor modelo, foram avaliados o valor D de Kolmogorov – Smirnov (α = 0,05), erro padrão da estimativa (Syx%), coeficiente de determinação ajustado (R² ajustado) e análise gráfica das curvas de frequências estimadas sobre o histograma das observadas. Em ambos os anos, a função Weibull 3P apresentou as melhores estatísticas de ajuste e maior precisão para descrever a distribuição diamétrica de Eschweilera coriacea e Lecythis idatimon, e o modelo de Weber para Eschweilera ovata. A função Gamma foi descartada para todas as espécies. Os resultados indicam a não viabilidade do uso de uma mesma função para descrever diferentes espécies, necessitando considerar as características intrínsecas de cada espécie.Universidade Federal de Santa Maria2021-03-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdftext/htmlhttps://periodicos.ufsm.br/cienciaflorestal/article/view/3601110.5902/1980509836011Ciência Florestal; Vol. 31 No. 1 (2021); 171-190Ciência Florestal; v. 31 n. 1 (2021); 171-1901980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/36011/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/36011/htmlCopyright (c) 2021 Ciência Florestalinfo:eu-repo/semantics/openAccessCruz, Loarena LealNakajima, Nelson YoshihiroSilva, Renildo Medeiros daHosokawa, Roberto TuyoshiJardim, Fernando Cristóvam da SilvaCorte, Ana Paula Dalla2021-05-20T04:00:53Zoai:ojs.pkp.sfu.ca:article/36011Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2021-05-20T04:00:53Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
Diametric distribution of three species of Lecythidaceae after reduced impact logging in Eastern Amazon Distribuição diamétrica de três espécies de Lecythidaceae após exploração de impacto reduzido na Amazônia Oriental |
title |
Diametric distribution of three species of Lecythidaceae after reduced impact logging in Eastern Amazon |
spellingShingle |
Diametric distribution of three species of Lecythidaceae after reduced impact logging in Eastern Amazon Cruz, Loarena Leal Forest exploration Tree diameter Probabilistic density function Exploração florestal Diâmetro arbóreo Função de densidade probabilística |
title_short |
Diametric distribution of three species of Lecythidaceae after reduced impact logging in Eastern Amazon |
title_full |
Diametric distribution of three species of Lecythidaceae after reduced impact logging in Eastern Amazon |
title_fullStr |
Diametric distribution of three species of Lecythidaceae after reduced impact logging in Eastern Amazon |
title_full_unstemmed |
Diametric distribution of three species of Lecythidaceae after reduced impact logging in Eastern Amazon |
title_sort |
Diametric distribution of three species of Lecythidaceae after reduced impact logging in Eastern Amazon |
author |
Cruz, Loarena Leal |
author_facet |
Cruz, Loarena Leal Nakajima, Nelson Yoshihiro Silva, Renildo Medeiros da Hosokawa, Roberto Tuyoshi Jardim, Fernando Cristóvam da Silva Corte, Ana Paula Dalla |
author_role |
author |
author2 |
Nakajima, Nelson Yoshihiro Silva, Renildo Medeiros da Hosokawa, Roberto Tuyoshi Jardim, Fernando Cristóvam da Silva Corte, Ana Paula Dalla |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Cruz, Loarena Leal Nakajima, Nelson Yoshihiro Silva, Renildo Medeiros da Hosokawa, Roberto Tuyoshi Jardim, Fernando Cristóvam da Silva Corte, Ana Paula Dalla |
dc.subject.por.fl_str_mv |
Forest exploration Tree diameter Probabilistic density function Exploração florestal Diâmetro arbóreo Função de densidade probabilística |
topic |
Forest exploration Tree diameter Probabilistic density function Exploração florestal Diâmetro arbóreo Função de densidade probabilística |
description |
Eschweilera coriacea, Eschweilera ovata and Lecythis idatimon are potentially commercial tropical species, therefore, widely harvested in Eastern Amazon. This research aims to evaluate the performance of three probabilistic density functions in the adjustment of the diametric distribution of three Lecythidaceae species, after one and ten years of the forest harvest, in a managed area, in the municipality of Moju, Pará state. Nine gaps proceeding from the reduced impact logging carried out in 1997 were studied. Around each gap, four 10 x 50 m strips were installed, starting from the edge of the gap into the forest, in the northern, southern, eastern and western directions, in a sampling of 1,8 ha. All individuals with DBH ≥ 5 cm were measured in two measurements (1998 and 2007). Probabilistic density functions Weibull 3P, Gamma and Weber were tested. For selecting the best model, we analyze the Kolmogorov - Smirnov D value (α = 0.05), standard error of the estimate (Syx%), the adjusted determination coefficient (adjusted R²) and the graphical analysis of the frequency curves estimated on the histogram of the observed ones. In both years, the Weibull 3P function presented the best fit and accuracy statistics to describe the diametric distribution of Eschweilera coriacea and Lecythis idatimon, and the Weber model for Eschweilera ovata. Gamma function was discarded for all species. The results indicate the non-feasibility of using the same function to describe different species, needing to consider the intrinsic characteristics to each species. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-03-15 |
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/36011 10.5902/1980509836011 |
url |
https://periodicos.ufsm.br/cienciaflorestal/article/view/36011 |
identifier_str_mv |
10.5902/1980509836011 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsm.br/cienciaflorestal/article/view/36011/pdf https://periodicos.ufsm.br/cienciaflorestal/article/view/36011/html |
dc.rights.driver.fl_str_mv |
Copyright (c) 2021 Ciência Florestal info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2021 Ciência Florestal |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf text/html |
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. 31 No. 1 (2021); 171-190 Ciência Florestal; v. 31 n. 1 (2021); 171-190 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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1799944134634504192 |