Validation of the method used by the SUBER model for the estimation of extracted cork dry weight with more and less than 9 years of growth

Detalhes bibliográficos
Autor(a) principal: Ruiz, Marta Felip
Data de Publicação: 2017
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/14823
Resumo: Mestrado MEDFOR - Mediterranean Forestry and Natural Resources Management / Instituto Superior de Agronomia
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spelling Validation of the method used by the SUBER model for the estimation of extracted cork dry weight with more and less than 9 years of growthcork biomassQuercus suberallometric modelsvalidationbiasprecisionMestrado MEDFOR - Mediterranean Forestry and Natural Resources Management / Instituto Superior de AgronomiaExtraction of cork from montados or cork oak forests is one of the main activities in Portugal. 23% of Portuguese forests are from Quercus suber and Portugal is the main producer of cork in the world. Commonly, every 9 years, but also 10 or more, the cork of the stem and branches with perimeter at breast height greater than 70 cm is removed. Possibly this intervals are not the optimum for the production of cork. Most of the models that exist only predict cork weight for 9 or 10 years of cork age. But a new model developed by Paulo and Tomé (2010) allows the prediction of mature cork biomass with t years of growth, based in one measurement taken at any other age. The model is based on two sub-models; the first one predicts cork biomass with 9 years of age using four alternative models with different variables as inputs; and a second one that estimates cork back weight proportion at 9 years of age. The method has already been validated for 9, 10 and 11 years of cork age, and the objective of this work was doing the validation of the model for that ages and also adding new data of 8 and 13 years of cork age. The evaluation was done by comparing the observed and the estimated values of cork biomass from corks with 8, 9, 10, 11 and 13 years of age. According to previous validation, it was confirmed that the model work better as more input variables are added in the model and it was also found that as the ages of cork biomass move away from 9 years, as well as the extremes of cork thickness classes, the worst is the performance of the modelISAPaulo, Joana AmaralTomé, MargaridaRepositório da Universidade de LisboaRuiz, Marta Felip2018-01-31T15:39:43Z20172017-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.5/14823TID:203086007engRuiz, M.F. - Validation of the method used by the SUBER model for the estimation of extracted cork dry weight with more and less than 9 years of growth. Lisboa: ISA, 2017, 41 p.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:44:50Zoai:www.repository.utl.pt:10400.5/14823Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:00:36.990619Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Validation of the method used by the SUBER model for the estimation of extracted cork dry weight with more and less than 9 years of growth
title Validation of the method used by the SUBER model for the estimation of extracted cork dry weight with more and less than 9 years of growth
spellingShingle Validation of the method used by the SUBER model for the estimation of extracted cork dry weight with more and less than 9 years of growth
Ruiz, Marta Felip
cork biomass
Quercus suber
allometric models
validation
bias
precision
title_short Validation of the method used by the SUBER model for the estimation of extracted cork dry weight with more and less than 9 years of growth
title_full Validation of the method used by the SUBER model for the estimation of extracted cork dry weight with more and less than 9 years of growth
title_fullStr Validation of the method used by the SUBER model for the estimation of extracted cork dry weight with more and less than 9 years of growth
title_full_unstemmed Validation of the method used by the SUBER model for the estimation of extracted cork dry weight with more and less than 9 years of growth
title_sort Validation of the method used by the SUBER model for the estimation of extracted cork dry weight with more and less than 9 years of growth
author Ruiz, Marta Felip
author_facet Ruiz, Marta Felip
author_role author
dc.contributor.none.fl_str_mv Paulo, Joana Amaral
Tomé, Margarida
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Ruiz, Marta Felip
dc.subject.por.fl_str_mv cork biomass
Quercus suber
allometric models
validation
bias
precision
topic cork biomass
Quercus suber
allometric models
validation
bias
precision
description Mestrado MEDFOR - Mediterranean Forestry and Natural Resources Management / Instituto Superior de Agronomia
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-01-01T00:00:00Z
2018-01-31T15:39:43Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/14823
TID:203086007
url http://hdl.handle.net/10400.5/14823
identifier_str_mv TID:203086007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Ruiz, M.F. - Validation of the method used by the SUBER model for the estimation of extracted cork dry weight with more and less than 9 years of growth. Lisboa: ISA, 2017, 41 p.
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 ISA
publisher.none.fl_str_mv ISA
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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