INFLUENCE OF SPACING ON SELF-THINNING OF A MONOCLONAL STAND OF Eucalyptus saligna Smith
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência Florestal (Online) |
DOI: | 10.5902/1980509817468 |
Texto Completo: | https://periodicos.ufsm.br/cienciaflorestal/article/view/17468 |
Resumo: | http://dx.doi.org/10.5902/1980509817468In the present study the effect of initial spacing on relationship between the density of trees per hectare and the average diameter in monoclonal stands of Eucalyptus saligna were investigated. The data used were collected from full stocked stands and highly stored annually, monitored until 18 years old using permanent plots. For that, the density model of trees per hectare by diameter was tested and the self-thinning model of Tang was indicated as the most accurate one and provided great performance statistics, with a coefficient of determination equal to 0.85, lower standard error equal to 0.1026, low coefficient of variation equal to 1.39%, a minimal tendency equal to -0.0534 and high-efficiency equal to 0.3903. The self-thinning occurs in a diameter directly proportional to the initial density of trees per hectare of plantation. As great is the initial spacing greater is the mean diameter in the moment of initiation of self-thinning of the population. The slope of the equation of density and diameter was equal to 1.0124 diverging from the value indicated for forest species in the law of self-thinning. |
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Ciência Florestal (Online) |
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INFLUENCE OF SPACING ON SELF-THINNING OF A MONOCLONAL STAND OF Eucalyptus saligna SmithINFLUÊNCIA DO ESPAÇAMENTO NO AUTODESBASTE DE POVOAMENTOMONOCLONAL DE Eucalyptus saligna Smiththinningdensitydensity models.desbastedensidademodelos de densidade.http://dx.doi.org/10.5902/1980509817468In the present study the effect of initial spacing on relationship between the density of trees per hectare and the average diameter in monoclonal stands of Eucalyptus saligna were investigated. The data used were collected from full stocked stands and highly stored annually, monitored until 18 years old using permanent plots. For that, the density model of trees per hectare by diameter was tested and the self-thinning model of Tang was indicated as the most accurate one and provided great performance statistics, with a coefficient of determination equal to 0.85, lower standard error equal to 0.1026, low coefficient of variation equal to 1.39%, a minimal tendency equal to -0.0534 and high-efficiency equal to 0.3903. The self-thinning occurs in a diameter directly proportional to the initial density of trees per hectare of plantation. As great is the initial spacing greater is the mean diameter in the moment of initiation of self-thinning of the population. The slope of the equation of density and diameter was equal to 1.0124 diverging from the value indicated for forest species in the law of self-thinning.http://dx.doi.org/10.5902/1980509817468No presente trabalho foi estudado o efeito do espaçamento inicial sobre a relação entre a densidade de árvores por hectare e o diâmetro médio em povoamentos monoclonais de Eucalyptus saligna Smith. Os dados foram obtidos em povoamentos de densidade completa e altamente estocados, monitorados anualmente em parcelas permanentes até os 18 anos. Para isto, foram testados os modelos de densidade de árvores por hectare pelo diâmetro médio, indicado o modelo de autodesbaste de Tang como o mais preciso, para gerar as estimativas dos valores de densidade, apresentando um coeficiente de determinação ajustado de 0,85, erro padrão da estimativa baixo igual a 0,1026, coeficiente de variação igual a 1,39 %, uma tendência mínima igual a -0,0534 e eficiência elevada igual a 0,3903. O autodesbaste ocorre numa dimensão de diâmetro médio diretamente proporcional à densidade inicial de árvores por hectare do plantio. Quanto maior o espaçamento inicial, maior é o diâmetro médio no momento do início do autodesbaste na população. O coeficiente angular da equação de densidade pelo diâmetro foi igual a 1,0124, divergente do valor indicado para espécies florestais na lei de autodesbaste. Universidade Federal de Santa Maria2015-03-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/1746810.5902/1980509817468Ciência Florestal; Vol. 25 No. 1 (2015); 119-126Ciência Florestal; v. 25 n. 1 (2015); 119-1261980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/17468/pdfSchneider, Paulo RenatoFinger, Cesar Augusto GuimarãesSchneider, Paulo Sérgio PigattoFleig, Frederico DimasCunha, Thiago Augusto dainfo:eu-repo/semantics/openAccess2017-04-11T17:29:03Zoai:ojs.pkp.sfu.ca:article/17468Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2017-04-11T17:29:03Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
INFLUENCE OF SPACING ON SELF-THINNING OF A MONOCLONAL STAND OF Eucalyptus saligna Smith INFLUÊNCIA DO ESPAÇAMENTO NO AUTODESBASTE DE POVOAMENTOMONOCLONAL DE Eucalyptus saligna Smith |
title |
INFLUENCE OF SPACING ON SELF-THINNING OF A MONOCLONAL STAND OF Eucalyptus saligna Smith |
spellingShingle |
INFLUENCE OF SPACING ON SELF-THINNING OF A MONOCLONAL STAND OF Eucalyptus saligna Smith INFLUENCE OF SPACING ON SELF-THINNING OF A MONOCLONAL STAND OF Eucalyptus saligna Smith Schneider, Paulo Renato thinning density density models. desbaste densidade modelos de densidade. Schneider, Paulo Renato thinning density density models. desbaste densidade modelos de densidade. |
title_short |
INFLUENCE OF SPACING ON SELF-THINNING OF A MONOCLONAL STAND OF Eucalyptus saligna Smith |
title_full |
INFLUENCE OF SPACING ON SELF-THINNING OF A MONOCLONAL STAND OF Eucalyptus saligna Smith |
title_fullStr |
INFLUENCE OF SPACING ON SELF-THINNING OF A MONOCLONAL STAND OF Eucalyptus saligna Smith INFLUENCE OF SPACING ON SELF-THINNING OF A MONOCLONAL STAND OF Eucalyptus saligna Smith |
title_full_unstemmed |
INFLUENCE OF SPACING ON SELF-THINNING OF A MONOCLONAL STAND OF Eucalyptus saligna Smith INFLUENCE OF SPACING ON SELF-THINNING OF A MONOCLONAL STAND OF Eucalyptus saligna Smith |
title_sort |
INFLUENCE OF SPACING ON SELF-THINNING OF A MONOCLONAL STAND OF Eucalyptus saligna Smith |
author |
Schneider, Paulo Renato |
author_facet |
Schneider, Paulo Renato Schneider, Paulo Renato Finger, Cesar Augusto Guimarães Schneider, Paulo Sérgio Pigatto Fleig, Frederico Dimas Cunha, Thiago Augusto da Finger, Cesar Augusto Guimarães Schneider, Paulo Sérgio Pigatto Fleig, Frederico Dimas Cunha, Thiago Augusto da |
author_role |
author |
author2 |
Finger, Cesar Augusto Guimarães Schneider, Paulo Sérgio Pigatto Fleig, Frederico Dimas Cunha, Thiago Augusto da |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Schneider, Paulo Renato Finger, Cesar Augusto Guimarães Schneider, Paulo Sérgio Pigatto Fleig, Frederico Dimas Cunha, Thiago Augusto da |
dc.subject.por.fl_str_mv |
thinning density density models. desbaste densidade modelos de densidade. |
topic |
thinning density density models. desbaste densidade modelos de densidade. |
description |
http://dx.doi.org/10.5902/1980509817468In the present study the effect of initial spacing on relationship between the density of trees per hectare and the average diameter in monoclonal stands of Eucalyptus saligna were investigated. The data used were collected from full stocked stands and highly stored annually, monitored until 18 years old using permanent plots. For that, the density model of trees per hectare by diameter was tested and the self-thinning model of Tang was indicated as the most accurate one and provided great performance statistics, with a coefficient of determination equal to 0.85, lower standard error equal to 0.1026, low coefficient of variation equal to 1.39%, a minimal tendency equal to -0.0534 and high-efficiency equal to 0.3903. The self-thinning occurs in a diameter directly proportional to the initial density of trees per hectare of plantation. As great is the initial spacing greater is the mean diameter in the moment of initiation of self-thinning of the population. The slope of the equation of density and diameter was equal to 1.0124 diverging from the value indicated for forest species in the law of self-thinning. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-03-29 |
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/17468 10.5902/1980509817468 |
url |
https://periodicos.ufsm.br/cienciaflorestal/article/view/17468 |
identifier_str_mv |
10.5902/1980509817468 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsm.br/cienciaflorestal/article/view/17468/pdf |
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. 25 No. 1 (2015); 119-126 Ciência Florestal; v. 25 n. 1 (2015); 119-126 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 |
_version_ |
1822181495744233472 |
dc.identifier.doi.none.fl_str_mv |
10.5902/1980509817468 |