Dynamics of the diameter distribution of Pinus taeda stands, in the region of Caçador, SC, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2011 |
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/190 |
Resumo: | The objective of this work was to fit the probability density functions Normal and SB, to describe the changes, with age, in the diameter distribution of loblolly pine (Pinus taeda) stands, in the region of Caçador, Santa Catarina State, Brazil. The data came from permanent and temporary plots, with ages ranging from 5 to 11,9, grouped in age classes with intervals of 1 year. The probability density functions were fitted and, the Kolmogorov-Smirnov test and the parameters of skewness and kurtosis were calculated. Basing on Kolmogorov-Smirnov test it was verified that, for ages from 5 to 7.9 years old, the Normal and SB functions didn’t show satisfactory adherence. The SB and Normal functions showed better adherence to the ages from 8 to 9.9 and from 10 to 11.9 years old, respectively. Using the Normal probability density functions to analyze the dynamics of the diameter distribution, it was found that there was a shift of the diameter distribution curves to the right, a “flatness” and an “wideness” of these curves, over the years. The skewness was negative for all ages, except for the age from 8 to 8.9 years old. The kurtosis was leptokurtic for all ages, except for age from 8 to 8.9 years old, which was platykurtic. |
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Dynamics of the diameter distribution of Pinus taeda stands, in the region of Caçador, SC, BrazilDinâmica da distribuição diamétrica de povoamentos de Pinus taeda, na região de Caçador, SCEstrutura horizontalFunção de densidade probabilísticaTeste de aderência de Kolmogorov-SmirnovHorizontal structureProbability density functionKolmogorov-Smirnov adherence testThe objective of this work was to fit the probability density functions Normal and SB, to describe the changes, with age, in the diameter distribution of loblolly pine (Pinus taeda) stands, in the region of Caçador, Santa Catarina State, Brazil. The data came from permanent and temporary plots, with ages ranging from 5 to 11,9, grouped in age classes with intervals of 1 year. The probability density functions were fitted and, the Kolmogorov-Smirnov test and the parameters of skewness and kurtosis were calculated. Basing on Kolmogorov-Smirnov test it was verified that, for ages from 5 to 7.9 years old, the Normal and SB functions didn’t show satisfactory adherence. The SB and Normal functions showed better adherence to the ages from 8 to 9.9 and from 10 to 11.9 years old, respectively. Using the Normal probability density functions to analyze the dynamics of the diameter distribution, it was found that there was a shift of the diameter distribution curves to the right, a “flatness” and an “wideness” of these curves, over the years. The skewness was negative for all ages, except for the age from 8 to 8.9 years old. The kurtosis was leptokurtic for all ages, except for age from 8 to 8.9 years old, which was platykurtic.O objetivo deste trabalho foi ajustar as funções de densidade probabilísticas (fdp’s) Normal e SB de Johnson, para descrever as mudanças, com a idade, na estrutura diamétrica de povoamentos de Pinus taeda L., na região de Caçador, SC. Os dados utilizados foram provenientes de parcelas temporárias e permanentes, com idades variando de 5 a 11,9 anos, agrupadas em classes com intervalos de 1 ano. Foram ajustadas as fdp’s e obtidas as estimativas dos parâmetros de assimetria e curtose. Por meio do teste de Kolmogorov-Smirnov, verificou-se que, para as idades de 5 a 7,9 anos, as fdp’s Normal e SB de Johnson não apresentaram aderência satisfatória. As fdp’s SB de Johnson e Normal apresentaram melhor aderência para as idades de 8 a 9,9 e 10 a 11,9 anos, respectivamente. Utilizando a fdp Normal para analisar a dinâmica da distribuição diamétrica, verificou-se um deslocamento das curvas de distribuição diamétrica para a direita, um “achatamento” e um “alargamento” destas curvas ao longo dos anos. A assimetria foi negativa para todas as idades, exceto para as idades de 8 a 8,9 anos. A curtose foi leptocúrtica para todas as idades, e platicúrtica para as idades de 8 a 8,9 anos.Embrapa Florestas2011-09-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/19010.4336/2011.pfb.31.67.183Pesquisa Florestal Brasileira; v. 31 n. 67 (2011): jul./set.; 183Pesquisa Florestal Brasileira; Vol. 31 No. 67 (2011): jul./set.; 1831983-26051809-3647reponame:Pesquisa Florestal Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/190/218Copyright (c) 2011 Saulo Jorge Téo, Samara Pozzan da Rocha, Aline Cristina Bortoncello, Rafaela Antunes Paz, Reinaldo Hoinacki da Costahttps://creativecommons.org/licenses/by-nc-nd/4.0info:eu-repo/semantics/openAccessTéo, Saulo JorgeRocha, Samara Pozzan daBortoncello, Aline CristinaPaz, Rafaela AntunesCosta, Reinaldo Hoinacki da2017-04-28T13:06:26Zoai:pfb.cnpf.embrapa.br/pfb:article/190Revistahttps://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:2017-04-28T13:06:26Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Dynamics of the diameter distribution of Pinus taeda stands, in the region of Caçador, SC, Brazil Dinâmica da distribuição diamétrica de povoamentos de Pinus taeda, na região de Caçador, SC |
title |
Dynamics of the diameter distribution of Pinus taeda stands, in the region of Caçador, SC, Brazil |
spellingShingle |
Dynamics of the diameter distribution of Pinus taeda stands, in the region of Caçador, SC, Brazil Téo, Saulo Jorge Estrutura horizontal Função de densidade probabilística Teste de aderência de Kolmogorov-Smirnov Horizontal structure Probability density function Kolmogorov-Smirnov adherence test |
title_short |
Dynamics of the diameter distribution of Pinus taeda stands, in the region of Caçador, SC, Brazil |
title_full |
Dynamics of the diameter distribution of Pinus taeda stands, in the region of Caçador, SC, Brazil |
title_fullStr |
Dynamics of the diameter distribution of Pinus taeda stands, in the region of Caçador, SC, Brazil |
title_full_unstemmed |
Dynamics of the diameter distribution of Pinus taeda stands, in the region of Caçador, SC, Brazil |
title_sort |
Dynamics of the diameter distribution of Pinus taeda stands, in the region of Caçador, SC, Brazil |
author |
Téo, Saulo Jorge |
author_facet |
Téo, Saulo Jorge Rocha, Samara Pozzan da Bortoncello, Aline Cristina Paz, Rafaela Antunes Costa, Reinaldo Hoinacki da |
author_role |
author |
author2 |
Rocha, Samara Pozzan da Bortoncello, Aline Cristina Paz, Rafaela Antunes Costa, Reinaldo Hoinacki da |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Téo, Saulo Jorge Rocha, Samara Pozzan da Bortoncello, Aline Cristina Paz, Rafaela Antunes Costa, Reinaldo Hoinacki da |
dc.subject.por.fl_str_mv |
Estrutura horizontal Função de densidade probabilística Teste de aderência de Kolmogorov-Smirnov Horizontal structure Probability density function Kolmogorov-Smirnov adherence test |
topic |
Estrutura horizontal Função de densidade probabilística Teste de aderência de Kolmogorov-Smirnov Horizontal structure Probability density function Kolmogorov-Smirnov adherence test |
description |
The objective of this work was to fit the probability density functions Normal and SB, to describe the changes, with age, in the diameter distribution of loblolly pine (Pinus taeda) stands, in the region of Caçador, Santa Catarina State, Brazil. The data came from permanent and temporary plots, with ages ranging from 5 to 11,9, grouped in age classes with intervals of 1 year. The probability density functions were fitted and, the Kolmogorov-Smirnov test and the parameters of skewness and kurtosis were calculated. Basing on Kolmogorov-Smirnov test it was verified that, for ages from 5 to 7.9 years old, the Normal and SB functions didn’t show satisfactory adherence. The SB and Normal functions showed better adherence to the ages from 8 to 9.9 and from 10 to 11.9 years old, respectively. Using the Normal probability density functions to analyze the dynamics of the diameter distribution, it was found that there was a shift of the diameter distribution curves to the right, a “flatness” and an “wideness” of these curves, over the years. The skewness was negative for all ages, except for the age from 8 to 8.9 years old. The kurtosis was leptokurtic for all ages, except for age from 8 to 8.9 years old, which was platykurtic. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-09-15 |
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://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/190 10.4336/2011.pfb.31.67.183 |
url |
https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/190 |
identifier_str_mv |
10.4336/2011.pfb.31.67.183 |
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/190/218 |
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. 31 n. 67 (2011): jul./set.; 183 Pesquisa Florestal Brasileira; Vol. 31 No. 67 (2011): jul./set.; 183 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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1783370932555874304 |