INTENSIVE MANAGEMENT FOR OPTIMIZING THE PRODUCTION OF HIGH-VALUE LOGS OF PINE FORESTS IN SOUTHERN BRAZIL
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência Florestal (Online) |
Texto Completo: | https://periodicos.ufsm.br/cienciaflorestal/article/view/33352 |
Resumo: | The best decision-making is a difficult task in forest management because it involves a large number of market and production variables. We simulated growth and yield of loblolly pine in high-quality sites, aiming to indicate thinning regimes and planting densities that maximize the production of large diameter logs (minor diameter >35 cm), as well as economically evaluating such regimes. We used the software OpTimber-LP for forest optimization problems. Simulations involved four planting densities (1,111; 1,600; 2,000; and 2,500 plants/ha); three thinnings with different weights, frequencies and ages of application; and clear cut at 25 years. Such combinations totalized in 2,916 simulated regimes. We calculated ANPV considering variations in interest rates, besides costs of production and returns resulting from thinnings and from clear cut. The findings indicated great productions of large diameter logs in regimes with low planting densities. Heavy thinnings (60% removal of trees) highlighted by being ideal to almost all thinnings, mainly in regimes with densities of 2,000 and 2,500 plants/ha. This intensity also was ideal to the first thinning, regardless the planting density. The most productive regimes presented large diameter log volumes ranging from 480 to 260 m³/ha, for regimes with 1,111 and 2,500 plants/ha, respectively. ANPV ranged from ~1.300 to ~2.100 R$/ha. As conclusion, less dense regimes provide largest productions in large diameter log, but lowest productions in total volume; as consequence, ANPV was larger in denser regimes, once the revenue obtained from high-value logs did not overcome that one obtained from finer (and consequently cheaper) logs. High-density regimes may produce less timber volume due to only one improper thinning, whereas low-density stands may have production really affected when are subjected to consecutive improper thinnings. |
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INTENSIVE MANAGEMENT FOR OPTIMIZING THE PRODUCTION OF HIGH-VALUE LOGS OF PINE FORESTS IN SOUTHERN BRAZILMANEJO INTENSIVO PARA OTIMIZAÇÃO DA PRODUÇÃO DE TORAS GROSSAS EM POVOAMENTOS DE PINUS NO SUL DO BRASILgrowth and yield simulatoroperational researchthinning regimesplanting density.simulador de crescimento e produçãopesquisa operacionalregimes de desbastedensidade de plantio.The best decision-making is a difficult task in forest management because it involves a large number of market and production variables. We simulated growth and yield of loblolly pine in high-quality sites, aiming to indicate thinning regimes and planting densities that maximize the production of large diameter logs (minor diameter >35 cm), as well as economically evaluating such regimes. We used the software OpTimber-LP for forest optimization problems. Simulations involved four planting densities (1,111; 1,600; 2,000; and 2,500 plants/ha); three thinnings with different weights, frequencies and ages of application; and clear cut at 25 years. Such combinations totalized in 2,916 simulated regimes. We calculated ANPV considering variations in interest rates, besides costs of production and returns resulting from thinnings and from clear cut. The findings indicated great productions of large diameter logs in regimes with low planting densities. Heavy thinnings (60% removal of trees) highlighted by being ideal to almost all thinnings, mainly in regimes with densities of 2,000 and 2,500 plants/ha. This intensity also was ideal to the first thinning, regardless the planting density. The most productive regimes presented large diameter log volumes ranging from 480 to 260 m³/ha, for regimes with 1,111 and 2,500 plants/ha, respectively. ANPV ranged from ~1.300 to ~2.100 R$/ha. As conclusion, less dense regimes provide largest productions in large diameter log, but lowest productions in total volume; as consequence, ANPV was larger in denser regimes, once the revenue obtained from high-value logs did not overcome that one obtained from finer (and consequently cheaper) logs. High-density regimes may produce less timber volume due to only one improper thinning, whereas low-density stands may have production really affected when are subjected to consecutive improper thinnings.O elevado número de variáveis da produção florestal dificulta o manejador decidir pela melhor tomada de decisão. Foi simulado o crescimento e produção de Pinus taedaL. em sítios altamente produtivos, com objetivo de indicar regimes de desbaste e densidades de plantio que maximizam a produção de toras grossas (diâmetro da ponta fina >35 cm), bem como avaliá-los economicamente. O software OpTimber-LP para otimização de problemas florestais foi usado. As simulações envolveram quatro densidades de plantio (1.111; 1.600; 2.000; e 2.500 plantas/ha); três desbastes com diferentes pesos, frequências e idades de aplicação; e corte raso aos 25 anos. Essas combinações totalizaram em 2.916 regimes de manejo. VPLA foi calculado com variação de taxas de interesse e considerando custos de produção e retornos provenientes de desbastes e do corte raso. Os resultados indicaram maior produção de toras grossas em regimes com menores densidades de plantio. A intensidade de desbaste de 60% destacou-se por ter sido ideal para quase todos os desbastes, principalmente nas densidades de 2.000 e 2.500 plantas/ha. Essa intensidade também foi ideal para o primeiro desbaste, independente da densidade de plantas. A produção nos melhores regimes variou de 480 e 260 m³/ha, para as densidades de 1.111 e 2.500 plantas/ha, respectivamente. VPLA variou de ~1.300 a ~2.100 R$/ha. Como conclusão, regimes de manejo menos densos propiciaram maior produção de toras grossas, porém menor em volume total; como consequência, o VPLA foi maior para os regimes mais densos, uma vez que a receita obtida pela produção de toras de alto valor não compensou a receita de toras mais finas (que também são mais baratas). Regimes com alta densidade podem fracassar com um único primeiro desbaste errado, enquanto que regimes com menor densidade podem ter produção realmente prejudicada quando são sujeitos a consecutivos desbastes errados.Universidade Federal de Santa Maria2018-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/3335210.5902/1980509833352Ciência Florestal; Vol. 28 No. 3 (2018); 1303-1316Ciência Florestal; v. 28 n. 3 (2018); 1303-13161980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMenghttps://periodicos.ufsm.br/cienciaflorestal/article/view/33352/pdfCopyright (c) 2018 Ciência Florestalinfo:eu-repo/semantics/openAccessDavid, Hassan CamilNetto, Sylvio PéllicoArce, Julio EduardoWoycikievicz, Antônio P. F.Araújo, Emanuel J. G. deMiranda, Rodrigo O. V. de2018-10-08T13:01:16Zoai:ojs.pkp.sfu.ca:article/33352Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2018-10-08T13:01:16Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
INTENSIVE MANAGEMENT FOR OPTIMIZING THE PRODUCTION OF HIGH-VALUE LOGS OF PINE FORESTS IN SOUTHERN BRAZIL MANEJO INTENSIVO PARA OTIMIZAÇÃO DA PRODUÇÃO DE TORAS GROSSAS EM POVOAMENTOS DE PINUS NO SUL DO BRASIL |
title |
INTENSIVE MANAGEMENT FOR OPTIMIZING THE PRODUCTION OF HIGH-VALUE LOGS OF PINE FORESTS IN SOUTHERN BRAZIL |
spellingShingle |
INTENSIVE MANAGEMENT FOR OPTIMIZING THE PRODUCTION OF HIGH-VALUE LOGS OF PINE FORESTS IN SOUTHERN BRAZIL David, Hassan Camil growth and yield simulator operational research thinning regimes planting density. simulador de crescimento e produção pesquisa operacional regimes de desbaste densidade de plantio. |
title_short |
INTENSIVE MANAGEMENT FOR OPTIMIZING THE PRODUCTION OF HIGH-VALUE LOGS OF PINE FORESTS IN SOUTHERN BRAZIL |
title_full |
INTENSIVE MANAGEMENT FOR OPTIMIZING THE PRODUCTION OF HIGH-VALUE LOGS OF PINE FORESTS IN SOUTHERN BRAZIL |
title_fullStr |
INTENSIVE MANAGEMENT FOR OPTIMIZING THE PRODUCTION OF HIGH-VALUE LOGS OF PINE FORESTS IN SOUTHERN BRAZIL |
title_full_unstemmed |
INTENSIVE MANAGEMENT FOR OPTIMIZING THE PRODUCTION OF HIGH-VALUE LOGS OF PINE FORESTS IN SOUTHERN BRAZIL |
title_sort |
INTENSIVE MANAGEMENT FOR OPTIMIZING THE PRODUCTION OF HIGH-VALUE LOGS OF PINE FORESTS IN SOUTHERN BRAZIL |
author |
David, Hassan Camil |
author_facet |
David, Hassan Camil Netto, Sylvio Péllico Arce, Julio Eduardo Woycikievicz, Antônio P. F. Araújo, Emanuel J. G. de Miranda, Rodrigo O. V. de |
author_role |
author |
author2 |
Netto, Sylvio Péllico Arce, Julio Eduardo Woycikievicz, Antônio P. F. Araújo, Emanuel J. G. de Miranda, Rodrigo O. V. de |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
David, Hassan Camil Netto, Sylvio Péllico Arce, Julio Eduardo Woycikievicz, Antônio P. F. Araújo, Emanuel J. G. de Miranda, Rodrigo O. V. de |
dc.subject.por.fl_str_mv |
growth and yield simulator operational research thinning regimes planting density. simulador de crescimento e produção pesquisa operacional regimes de desbaste densidade de plantio. |
topic |
growth and yield simulator operational research thinning regimes planting density. simulador de crescimento e produção pesquisa operacional regimes de desbaste densidade de plantio. |
description |
The best decision-making is a difficult task in forest management because it involves a large number of market and production variables. We simulated growth and yield of loblolly pine in high-quality sites, aiming to indicate thinning regimes and planting densities that maximize the production of large diameter logs (minor diameter >35 cm), as well as economically evaluating such regimes. We used the software OpTimber-LP for forest optimization problems. Simulations involved four planting densities (1,111; 1,600; 2,000; and 2,500 plants/ha); three thinnings with different weights, frequencies and ages of application; and clear cut at 25 years. Such combinations totalized in 2,916 simulated regimes. We calculated ANPV considering variations in interest rates, besides costs of production and returns resulting from thinnings and from clear cut. The findings indicated great productions of large diameter logs in regimes with low planting densities. Heavy thinnings (60% removal of trees) highlighted by being ideal to almost all thinnings, mainly in regimes with densities of 2,000 and 2,500 plants/ha. This intensity also was ideal to the first thinning, regardless the planting density. The most productive regimes presented large diameter log volumes ranging from 480 to 260 m³/ha, for regimes with 1,111 and 2,500 plants/ha, respectively. ANPV ranged from ~1.300 to ~2.100 R$/ha. As conclusion, less dense regimes provide largest productions in large diameter log, but lowest productions in total volume; as consequence, ANPV was larger in denser regimes, once the revenue obtained from high-value logs did not overcome that one obtained from finer (and consequently cheaper) logs. High-density regimes may produce less timber volume due to only one improper thinning, whereas low-density stands may have production really affected when are subjected to consecutive improper thinnings. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-10-01 |
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/33352 10.5902/1980509833352 |
url |
https://periodicos.ufsm.br/cienciaflorestal/article/view/33352 |
identifier_str_mv |
10.5902/1980509833352 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.ufsm.br/cienciaflorestal/article/view/33352/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. 3 (2018); 1303-1316 Ciência Florestal; v. 28 n. 3 (2018); 1303-1316 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_ |
1799944133859606528 |