Growth and yield models for eucalyptus stands obtained by differential equations
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/36404 |
Resumo: | The main purpose of this study was to assess nonlinear models generated by integrating the basal area growth rate to estimate the growth and yield of forest stands. The database was collected from permanent sample units, in Paraopeba county, in the state of Minas Gerais, Brazil. The stands were represented by Eucalyptus camaldulensis × Eucalyptus urophylla hybrid trees, with 3 × 3 meters of spacing. The data were divided into two groups: fitting and validating databases. Two nonlinear models (Strategy A and Strategy B) were developed using differential equations to estimate the basal area growth and yield of the sample units. The logistic model was fitted to estimate the volumetric yield as a function of age, site index and basal area. The efficiency of the systems generated by logistic model and models obtained by differential equations (Strategy A and Strategy B) was also compared to the efficiency of the system estimated by the Clutter model (Strategy C). The projection models used to estimate basal area obtained by differential equations were compatible with forest growth and yield, and the logistic model with covariates was compatible with volumetric growth and yield. Strategy A and Strategy B generated different thinning and harvesting options for different site indices, which is biologically consistent. |
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Growth and yield models for eucalyptus stands obtained by differential equationsNonlinear modelsCompatible modelsBiological consistencyThe main purpose of this study was to assess nonlinear models generated by integrating the basal area growth rate to estimate the growth and yield of forest stands. The database was collected from permanent sample units, in Paraopeba county, in the state of Minas Gerais, Brazil. The stands were represented by Eucalyptus camaldulensis × Eucalyptus urophylla hybrid trees, with 3 × 3 meters of spacing. The data were divided into two groups: fitting and validating databases. Two nonlinear models (Strategy A and Strategy B) were developed using differential equations to estimate the basal area growth and yield of the sample units. The logistic model was fitted to estimate the volumetric yield as a function of age, site index and basal area. The efficiency of the systems generated by logistic model and models obtained by differential equations (Strategy A and Strategy B) was also compared to the efficiency of the system estimated by the Clutter model (Strategy C). The projection models used to estimate basal area obtained by differential equations were compatible with forest growth and yield, and the logistic model with covariates was compatible with volumetric growth and yield. Strategy A and Strategy B generated different thinning and harvesting options for different site indices, which is biologically consistent.Escola Superior de Agricultura "Luiz de Queiroz"2019-08-23T10:49:21Z2019-08-23T10:49:21Z2017info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfMENDONÇA, A. R. de et al. Growth and yield models for eucalyptus stands obtained by differential equations. Scientia Agricola, Piracicaba, v. 74, n. 5, Sept.Oct. 2017.http://repositorio.ufla.br/jspui/handle/1/36404Scientia Agricolareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessMendonça, Adriano Ribeiro deCalegario, NatalinoSilva, Gilson Fernandes daCarvalho, Samuel de Pádua Chaves eeng2019-08-23T10:49:22Zoai:localhost:1/36404Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2019-08-23T10:49:22Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Growth and yield models for eucalyptus stands obtained by differential equations |
title |
Growth and yield models for eucalyptus stands obtained by differential equations |
spellingShingle |
Growth and yield models for eucalyptus stands obtained by differential equations Mendonça, Adriano Ribeiro de Nonlinear models Compatible models Biological consistency |
title_short |
Growth and yield models for eucalyptus stands obtained by differential equations |
title_full |
Growth and yield models for eucalyptus stands obtained by differential equations |
title_fullStr |
Growth and yield models for eucalyptus stands obtained by differential equations |
title_full_unstemmed |
Growth and yield models for eucalyptus stands obtained by differential equations |
title_sort |
Growth and yield models for eucalyptus stands obtained by differential equations |
author |
Mendonça, Adriano Ribeiro de |
author_facet |
Mendonça, Adriano Ribeiro de Calegario, Natalino Silva, Gilson Fernandes da Carvalho, Samuel de Pádua Chaves e |
author_role |
author |
author2 |
Calegario, Natalino Silva, Gilson Fernandes da Carvalho, Samuel de Pádua Chaves e |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Mendonça, Adriano Ribeiro de Calegario, Natalino Silva, Gilson Fernandes da Carvalho, Samuel de Pádua Chaves e |
dc.subject.por.fl_str_mv |
Nonlinear models Compatible models Biological consistency |
topic |
Nonlinear models Compatible models Biological consistency |
description |
The main purpose of this study was to assess nonlinear models generated by integrating the basal area growth rate to estimate the growth and yield of forest stands. The database was collected from permanent sample units, in Paraopeba county, in the state of Minas Gerais, Brazil. The stands were represented by Eucalyptus camaldulensis × Eucalyptus urophylla hybrid trees, with 3 × 3 meters of spacing. The data were divided into two groups: fitting and validating databases. Two nonlinear models (Strategy A and Strategy B) were developed using differential equations to estimate the basal area growth and yield of the sample units. The logistic model was fitted to estimate the volumetric yield as a function of age, site index and basal area. The efficiency of the systems generated by logistic model and models obtained by differential equations (Strategy A and Strategy B) was also compared to the efficiency of the system estimated by the Clutter model (Strategy C). The projection models used to estimate basal area obtained by differential equations were compatible with forest growth and yield, and the logistic model with covariates was compatible with volumetric growth and yield. Strategy A and Strategy B generated different thinning and harvesting options for different site indices, which is biologically consistent. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017 2019-08-23T10:49:21Z 2019-08-23T10:49:21Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
MENDONÇA, A. R. de et al. Growth and yield models for eucalyptus stands obtained by differential equations. Scientia Agricola, Piracicaba, v. 74, n. 5, Sept.Oct. 2017. http://repositorio.ufla.br/jspui/handle/1/36404 |
identifier_str_mv |
MENDONÇA, A. R. de et al. Growth and yield models for eucalyptus stands obtained by differential equations. Scientia Agricola, Piracicaba, v. 74, n. 5, Sept.Oct. 2017. |
url |
http://repositorio.ufla.br/jspui/handle/1/36404 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
dc.source.none.fl_str_mv |
Scientia Agricola reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
_version_ |
1807835218281758720 |