Individual-tree diameter growth models for mixed Nothofagus second growth forests in southern Chile

Second growth forests of Nothofagus obliqua (roble), N. alpina (raulí), and N. dombeyi (coihue), known locally as RORACO, are among the most important native mixed forests in Chile. To improve the sustainable management of these forests, managers need adequate information and models regarding not on...

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Autores:
Tipo de recurso:
Fecha de publicación:
2017
Institución:
Universidad del Rosario
Repositorio:
Repositorio EdocUR - U. Rosario
Idioma:
eng
OAI Identifier:
oai:repository.urosario.edu.co:10336/19152
Acceso en línea:
http://repository.urosario.edu.co/handle/10336/19152
Palabra clave:
Ecosystems
Error Statistics
Geographical Distribution
Mean Square Error
Cross Validation
Forest Type
Lasso
Tree Competition
Variable Selection
Forestry
Competition (Ecology)
Diameter
Forest Management
Geographical Distribution
Growth Rate
Modeling
Shrub
Silviculture
Sustainability
Chile
Nothofagus
Nothofagus Alpina
Nothofagus Dombeyi
Nothofagus Obliqua
Biología
Ecosistemas
Árboles
Coihue
Rights
License
Abierto (Texto Completo)
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spelling 9d4652ee-e9c6-4e7d-9eb9-e5ffe5a4454b600bb05be6f-02e9-47e2-a353-811a4850ce016005710916003b36cea5-acf7-4123-a5d1-514094881f4360055f16361-57e6-4013-ab98-e52380f6a5ab6002019-02-28T16:41:17Z2019-02-28T16:41:17Z20172017Second growth forests of Nothofagus obliqua (roble), N. alpina (raulí), and N. dombeyi (coihue), known locally as RORACO, are among the most important native mixed forests in Chile. To improve the sustainable management of these forests, managers need adequate information and models regarding not only existing forest conditions, but their future states with varying alternative silvicultural activities. In this study, an individual-tree diameter growth model was developed for the full geographical distribution of the RORACO forest type. This was achieved by fitting a complete model by comparing two variable selection procedures: cross-validation (CV), and least absolute shrinkage and selection operator (LASSO) regression. A small set of predictors successfully explained a large portion of the annual increment in diameter at breast height (DBH) growth, particularly variables associated with competition at both the tree- and stand-level. Goodness-of-fit statistics for this final model showed an empirical coefficient of correlation (R2emp) of 0.56, relative root mean square error of 44.49% and relative bias of -1.96% for annual DBH growth predictions, and R2emp of 0.98 and 0.97 for DBH projection at 6 and 12 years, respectively. This model constitutes a simple and useful tool to support management plans for these forest ecosystems. © 2017 by the authors.application/pdf10.3390/f81205061999-4907http://repository.urosario.edu.co/handle/10336/19152engForestsVol. 8Forests, ISSN:1999-4907, Vol. 8 (2017)https://www.mdpi.com/1999-4907/8/12/506Abierto (Texto Completo)http://purl.org/coar/access_right/c_abf2Donoso, C., Variación natural en especies de Nothofagus en Chile (1987) Bosque, 8, pp. 85-97. , http://mingaonline.uach.cl/pdf/bosque/v8n2/art03.pdf, (accessed on 15 July 2017)instname:Universidad del Rosarioreponame:Repositorio Institucional EdocUREcosystemsError StatisticsGeographical DistributionMean Square ErrorCross ValidationForest TypeLassoTree CompetitionVariable SelectionForestryCompetition (Ecology)DiameterForest ManagementGeographical DistributionGrowth RateModelingShrubSilvicultureSustainabilityChileNothofagusNothofagus AlpinaNothofagus DombeyiNothofagus ObliquaBiología574600EcosistemasÁrbolesCoihueIndividual-tree diameter growth models for mixed Nothofagus second growth forests in southern ChilearticleArtículohttp://purl.org/coar/version/c_970fb48d4fbd8a85http://purl.org/coar/resource_type/c_6501Moreno, Paulo C.Palmas, SebastianEscobedo, Francisco JCropper, Wendell P.Gezan, Salvador A.Moreno, Paulo C.Palmas, SebastianEscobedo, Francisco J.Cropper, Wendell P.Gezan, Salvador A.ORIGINAL118.pdfapplication/pdf2346971https://repository.urosario.edu.co/bitstreams/9cf7794f-3e19-47cc-9718-a1e996914ce9/download9f821cb38b40d620de76d3181dc43d5bMD51TEXT118.pdf.txt118.pdf.txtExtracted texttext/plain74597https://repository.urosario.edu.co/bitstreams/d602c7e3-4111-464a-a134-abdbf0aac806/download009aef59c91e856129b0b1d09f49b966MD52THUMBNAIL118.pdf.jpg118.pdf.jpgGenerated Thumbnailimage/jpeg5003https://repository.urosario.edu.co/bitstreams/984ea04b-d92c-4b5c-8aa9-202d26f8186a/download29ce798bd3a65a2cd15889ad65b1ce17MD5310336/19152oai:repository.urosario.edu.co:10336/191522019-09-19 07:37:54.609585https://repository.urosario.edu.coRepositorio institucional EdocURedocur@urosario.edu.co
dc.title.spa.fl_str_mv Individual-tree diameter growth models for mixed Nothofagus second growth forests in southern Chile
title Individual-tree diameter growth models for mixed Nothofagus second growth forests in southern Chile
spellingShingle Individual-tree diameter growth models for mixed Nothofagus second growth forests in southern Chile
Ecosystems
Error Statistics
Geographical Distribution
Mean Square Error
Cross Validation
Forest Type
Lasso
Tree Competition
Variable Selection
Forestry
Competition (Ecology)
Diameter
Forest Management
Geographical Distribution
Growth Rate
Modeling
Shrub
Silviculture
Sustainability
Chile
Nothofagus
Nothofagus Alpina
Nothofagus Dombeyi
Nothofagus Obliqua
Biología
Ecosistemas
Árboles
Coihue
title_short Individual-tree diameter growth models for mixed Nothofagus second growth forests in southern Chile
title_full Individual-tree diameter growth models for mixed Nothofagus second growth forests in southern Chile
title_fullStr Individual-tree diameter growth models for mixed Nothofagus second growth forests in southern Chile
title_full_unstemmed Individual-tree diameter growth models for mixed Nothofagus second growth forests in southern Chile
title_sort Individual-tree diameter growth models for mixed Nothofagus second growth forests in southern Chile
dc.subject.spa.fl_str_mv Ecosystems
Error Statistics
Geographical Distribution
Mean Square Error
Cross Validation
Forest Type
Lasso
Tree Competition
Variable Selection
Forestry
Competition (Ecology)
Diameter
Forest Management
Geographical Distribution
Growth Rate
Modeling
Shrub
Silviculture
Sustainability
Chile
Nothofagus
Nothofagus Alpina
Nothofagus Dombeyi
Nothofagus Obliqua
topic Ecosystems
Error Statistics
Geographical Distribution
Mean Square Error
Cross Validation
Forest Type
Lasso
Tree Competition
Variable Selection
Forestry
Competition (Ecology)
Diameter
Forest Management
Geographical Distribution
Growth Rate
Modeling
Shrub
Silviculture
Sustainability
Chile
Nothofagus
Nothofagus Alpina
Nothofagus Dombeyi
Nothofagus Obliqua
Biología
Ecosistemas
Árboles
Coihue
dc.subject.ddc.spa.fl_str_mv Biología
dc.subject.lemb.spa.fl_str_mv Ecosistemas
Árboles
Coihue
description Second growth forests of Nothofagus obliqua (roble), N. alpina (raulí), and N. dombeyi (coihue), known locally as RORACO, are among the most important native mixed forests in Chile. To improve the sustainable management of these forests, managers need adequate information and models regarding not only existing forest conditions, but their future states with varying alternative silvicultural activities. In this study, an individual-tree diameter growth model was developed for the full geographical distribution of the RORACO forest type. This was achieved by fitting a complete model by comparing two variable selection procedures: cross-validation (CV), and least absolute shrinkage and selection operator (LASSO) regression. A small set of predictors successfully explained a large portion of the annual increment in diameter at breast height (DBH) growth, particularly variables associated with competition at both the tree- and stand-level. Goodness-of-fit statistics for this final model showed an empirical coefficient of correlation (R2emp) of 0.56, relative root mean square error of 44.49% and relative bias of -1.96% for annual DBH growth predictions, and R2emp of 0.98 and 0.97 for DBH projection at 6 and 12 years, respectively. This model constitutes a simple and useful tool to support management plans for these forest ecosystems. © 2017 by the authors.
publishDate 2017
dc.date.created.none.fl_str_mv 2017
dc.date.issued.none.fl_str_mv 2017
dc.date.accessioned.none.fl_str_mv 2019-02-28T16:41:17Z
dc.date.available.none.fl_str_mv 2019-02-28T16:41:17Z
dc.type.eng.fl_str_mv article
dc.type.coarversion.fl_str_mv http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.coar.fl_str_mv http://purl.org/coar/resource_type/c_6501
dc.type.spa.spa.fl_str_mv Artículo
dc.identifier.doi.none.fl_str_mv 10.3390/f8120506
dc.identifier.issn.none.fl_str_mv 1999-4907
dc.identifier.uri.none.fl_str_mv http://repository.urosario.edu.co/handle/10336/19152
identifier_str_mv 10.3390/f8120506
1999-4907
url http://repository.urosario.edu.co/handle/10336/19152
dc.language.iso.spa.fl_str_mv eng
language eng
dc.relation.citationTitle.none.fl_str_mv Forests
dc.relation.citationVolume.none.fl_str_mv Vol. 8
dc.relation.ispartof.spa.fl_str_mv Forests, ISSN:1999-4907, Vol. 8 (2017)
dc.relation.uri.spa.fl_str_mv https://www.mdpi.com/1999-4907/8/12/506
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.acceso.spa.fl_str_mv Abierto (Texto Completo)
rights_invalid_str_mv Abierto (Texto Completo)
http://purl.org/coar/access_right/c_abf2
dc.format.mimetype.none.fl_str_mv application/pdf
institution Universidad del Rosario
dc.source.bibliographicCitation.spa.fl_str_mv Donoso, C., Variación natural en especies de Nothofagus en Chile (1987) Bosque, 8, pp. 85-97. , http://mingaonline.uach.cl/pdf/bosque/v8n2/art03.pdf, (accessed on 15 July 2017)
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