HARVESTER PRODUCTIVITY IN THINNING PINE PLANTATIONS IN NORTHEASTERN ARGENTINA
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | spa |
Título da fonte: | Ciência Florestal (Online) |
Texto Completo: | https://periodicos.ufsm.br/cienciaflorestal/article/view/35128 |
Resumo: | The productivity of second and third thinning operations in Pinus taeda and Pinus elliottii var. elliottii xPinus caribaea var. hondurensis performed by wheeled harvesters in northeastern Argentina was analyzed.Trees harvested in the second thinning had an average volume of 0.43 m³ for a 12 years old Pinus taedastand and 0.36 m³ for a 10 years hybrid pine stand, while in the third thinning the tree volume was 0.71 m³ for a 13 years old Pinus taeda and 0.75 m³ for 15 years old hybrid pine stand. Partial time models for each activity in the cycle were developed, and the influence of the thinning type, harvested species, number of products bucking, volume of trees, and feller forms were determined for each cycle activity. The adjusted models were integrated into a model of effective productivity achieving a R2 Aj of 0.61. The tree volume was significant to explain the time consumption of all evaluated activities, being especially crucial in felling, delimbing, and bucking the trees. The thinning type affected location time, while the species affected delimbing and bucking time. When producing up to three assorted products, it was required more time for delimbing and bucking. There was an increase in the number of products when third thinning was performed on hybrid pine with respect to Pinus taeda. |
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HARVESTER PRODUCTIVITY IN THINNING PINE PLANTATIONS IN NORTHEASTERN ARGENTINAPRODUCTIVIDAD DE UN HARVESTER EN RALEOS DE PLANTACIONES DE PINOS EN EL NORESTE ARGENTINOWheeled harvesterPinus taedaHybrid pine.Harvester de ruedasPinus taedaPino híbrido.The productivity of second and third thinning operations in Pinus taeda and Pinus elliottii var. elliottii xPinus caribaea var. hondurensis performed by wheeled harvesters in northeastern Argentina was analyzed.Trees harvested in the second thinning had an average volume of 0.43 m³ for a 12 years old Pinus taedastand and 0.36 m³ for a 10 years hybrid pine stand, while in the third thinning the tree volume was 0.71 m³ for a 13 years old Pinus taeda and 0.75 m³ for 15 years old hybrid pine stand. Partial time models for each activity in the cycle were developed, and the influence of the thinning type, harvested species, number of products bucking, volume of trees, and feller forms were determined for each cycle activity. The adjusted models were integrated into a model of effective productivity achieving a R2 Aj of 0.61. The tree volume was significant to explain the time consumption of all evaluated activities, being especially crucial in felling, delimbing, and bucking the trees. The thinning type affected location time, while the species affected delimbing and bucking time. When producing up to three assorted products, it was required more time for delimbing and bucking. There was an increase in the number of products when third thinning was performed on hybrid pine with respect to Pinus taeda.Se analizó la productividad de segundos y terceros raleos en plantaciones de Pinus taeda y Pinus elliottii var. elliottii x Pinus caribaea var. hondurensis realizados con harvesters de ruedas en el Noreste Argentino. Los árboles cosechados en los segundos raleos presentaron un volumen medio de 0,43 m³ para Pinus taeda de 12 años y 0,36 m³ para pino hibrido de 10 años, mientras que en los terceros raleos este valor fue de 0,71 m³ para Pinus taeda de 13 años y 0,75 m³ para pino hibrido de 15 años respectivamente. Se desarrollaron modelos de tiempos parciales para cada una de las actividades que componen el ciclo operacional y se determinó la influencia del tipo de raleo, especie cosechada, número de productos elaborados, volumen de los árboles y forma de volteo, sobre el tiempo insumido por cada actividad. Los modelos ajustados fueron integrados en un modelo de productividad efectiva consiguiéndose un coeficiente de determinación ajustado R2 Aj de 0,61. El volumen de los árboles resultó significativo para explicar la duración de todas las actividades evaluadas, siendo especialmente determinante en el volteo de los árboles, su desrame y trozado. El tipo de raleo afectó al tiempo de ubicación, mientras que la especie afectó al tiempo de desrame y trozado. La elaboración de hasta tres productos diferentes requirió un mayor tiempo destinado al desrame y trozado. Ocurrió un aumento de la cantidad de productos cuando se realizaron terceros raleos sobre pino hibrido, respecto Pinus taeda.Universidade Federal de Santa Maria2018-12-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/3512810.5902/1980509835128Ciência Florestal; Vol. 28 No. 4 (2018); 1627-1639Ciência Florestal; v. 28 n. 4 (2018); 1627-16391980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMspahttps://periodicos.ufsm.br/cienciaflorestal/article/view/35128/pdfCopyright (c) 2018 Ciência Florestalinfo:eu-repo/semantics/openAccessHildt, EduardoDonagh, Patricio Miguel MacSomma, Francisco FerrandoAlegranza, DiegoDurán, Daniel2018-12-16T20:33:04Zoai:ojs.pkp.sfu.ca:article/35128Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2018-12-16T20:33:04Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
HARVESTER PRODUCTIVITY IN THINNING PINE PLANTATIONS IN NORTHEASTERN ARGENTINA PRODUCTIVIDAD DE UN HARVESTER EN RALEOS DE PLANTACIONES DE PINOS EN EL NORESTE ARGENTINO |
title |
HARVESTER PRODUCTIVITY IN THINNING PINE PLANTATIONS IN NORTHEASTERN ARGENTINA |
spellingShingle |
HARVESTER PRODUCTIVITY IN THINNING PINE PLANTATIONS IN NORTHEASTERN ARGENTINA Hildt, Eduardo Wheeled harvester Pinus taeda Hybrid pine. Harvester de ruedas Pinus taeda Pino híbrido. |
title_short |
HARVESTER PRODUCTIVITY IN THINNING PINE PLANTATIONS IN NORTHEASTERN ARGENTINA |
title_full |
HARVESTER PRODUCTIVITY IN THINNING PINE PLANTATIONS IN NORTHEASTERN ARGENTINA |
title_fullStr |
HARVESTER PRODUCTIVITY IN THINNING PINE PLANTATIONS IN NORTHEASTERN ARGENTINA |
title_full_unstemmed |
HARVESTER PRODUCTIVITY IN THINNING PINE PLANTATIONS IN NORTHEASTERN ARGENTINA |
title_sort |
HARVESTER PRODUCTIVITY IN THINNING PINE PLANTATIONS IN NORTHEASTERN ARGENTINA |
author |
Hildt, Eduardo |
author_facet |
Hildt, Eduardo Donagh, Patricio Miguel Mac Somma, Francisco Ferrando Alegranza, Diego Durán, Daniel |
author_role |
author |
author2 |
Donagh, Patricio Miguel Mac Somma, Francisco Ferrando Alegranza, Diego Durán, Daniel |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Hildt, Eduardo Donagh, Patricio Miguel Mac Somma, Francisco Ferrando Alegranza, Diego Durán, Daniel |
dc.subject.por.fl_str_mv |
Wheeled harvester Pinus taeda Hybrid pine. Harvester de ruedas Pinus taeda Pino híbrido. |
topic |
Wheeled harvester Pinus taeda Hybrid pine. Harvester de ruedas Pinus taeda Pino híbrido. |
description |
The productivity of second and third thinning operations in Pinus taeda and Pinus elliottii var. elliottii xPinus caribaea var. hondurensis performed by wheeled harvesters in northeastern Argentina was analyzed.Trees harvested in the second thinning had an average volume of 0.43 m³ for a 12 years old Pinus taedastand and 0.36 m³ for a 10 years hybrid pine stand, while in the third thinning the tree volume was 0.71 m³ for a 13 years old Pinus taeda and 0.75 m³ for 15 years old hybrid pine stand. Partial time models for each activity in the cycle were developed, and the influence of the thinning type, harvested species, number of products bucking, volume of trees, and feller forms were determined for each cycle activity. The adjusted models were integrated into a model of effective productivity achieving a R2 Aj of 0.61. The tree volume was significant to explain the time consumption of all evaluated activities, being especially crucial in felling, delimbing, and bucking the trees. The thinning type affected location time, while the species affected delimbing and bucking time. When producing up to three assorted products, it was required more time for delimbing and bucking. There was an increase in the number of products when third thinning was performed on hybrid pine with respect to Pinus taeda. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-16 |
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/35128 10.5902/1980509835128 |
url |
https://periodicos.ufsm.br/cienciaflorestal/article/view/35128 |
identifier_str_mv |
10.5902/1980509835128 |
dc.language.iso.fl_str_mv |
spa |
language |
spa |
dc.relation.none.fl_str_mv |
https://periodicos.ufsm.br/cienciaflorestal/article/view/35128/pdf |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Ciência Florestal info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Ciência Florestal |
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. 28 No. 4 (2018); 1627-1639 Ciência Florestal; v. 28 n. 4 (2018); 1627-1639 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_ |
1799944134549569536 |