Compactação de dois argissolos na colheita florestal de Pinus taeda L.

Detalhes bibliográficos
Autor(a) principal: Cechin, Nirlene Fernandes
Data de Publicação: 2007
Tipo de documento: Tese
Idioma: por
Título da fonte: Manancial - Repositório Digital da UFSM
dARK ID: ark:/26339/001300000gvwm
Texto Completo: http://repositorio.ufsm.br/handle/1/3714
Resumo: The knowledge of soil damage due forest harvest is important for adequate management of soil physical conditions, to increase wood yield and decrease soil degradation. This study evaluates the influence of different operations of forest harvest on the soil physical properties of a typical Hapludalf and an abrupt Hapludalf. The research was realized in areas under 17 years old commercial forest of Pinus taeda. The soil physical properties were evaluated before and after the forest harvest. The treatments, constituted by the different operations of Pinus harvest were as following: before the harvest; after trees cut; after wood dragging with one pass of the skidder; after wood dragging with three passes of the skidder and after removing the wood from storing place (piles). Undisturbed soil samples were taken from layers of 0.00-0.05; 0.05-0.10; 0.10-0.20; 0.20-0.30 and 0.30-0.40m to determine bulk density, microporosity, macroporosity, total porosity, gravimetric soil moisture and saturated hydraulic conductivity. Soil resistance to penetration was evaluated either. To evaluate compressive behavior of soil, undisturbed soil samples were taken from layers of 0.025-0.05m and 0.10-0.125m to determine the bulk density before and after the uniaxial compression test; soil deformation after the test; gravimetric moisture and degree of saturation of soil before the test. The precompression stress and compression index were obtained from compression curves. The soil bulk density of the typic Hapludalf presented biggest reduction after three passes of the skidder, due the superposition of the tractor passes and its pressure during wood dragging. The soil resistance to penetration had the biggest values, indicating the biggest degradation due to the forest harvest. After three steps of the skidder the compaction took place with bigger intensity in the soil surface and that had a uniform distribution in the layers of the soil profile. Before the harvest, after the forest cut, after one step of the skidder and after the wood retreat from shipyard the compaction took place more in the vertical direction. Considering the larger deformations and compression index, the soil should be trafficked with degree of saturation of 65 to 69% to avoid larger deformations and reduce susceptibility of soil to compaction. In the abrupt Hapludalf the soil compaction was smaller. Such a fact was indicated by smaller soil resistance to the mechanical penetration, which indicates a less degree of compaction. The soil saturated hydraulic conductivity was the parameter that better expressed the compaction of the Alfisols.
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spelling Compactação de dois argissolos na colheita florestal de Pinus taeda L.Compaction of two alfisols in the forest harvest of Pinus taeda L.CompactaçãoGrau de saturaçãoCompressibilidadeResistência à penetraçãoCompactionDegree of saturationCompressibilitySoil penetration resistanceCNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTALThe knowledge of soil damage due forest harvest is important for adequate management of soil physical conditions, to increase wood yield and decrease soil degradation. This study evaluates the influence of different operations of forest harvest on the soil physical properties of a typical Hapludalf and an abrupt Hapludalf. The research was realized in areas under 17 years old commercial forest of Pinus taeda. The soil physical properties were evaluated before and after the forest harvest. The treatments, constituted by the different operations of Pinus harvest were as following: before the harvest; after trees cut; after wood dragging with one pass of the skidder; after wood dragging with three passes of the skidder and after removing the wood from storing place (piles). Undisturbed soil samples were taken from layers of 0.00-0.05; 0.05-0.10; 0.10-0.20; 0.20-0.30 and 0.30-0.40m to determine bulk density, microporosity, macroporosity, total porosity, gravimetric soil moisture and saturated hydraulic conductivity. Soil resistance to penetration was evaluated either. To evaluate compressive behavior of soil, undisturbed soil samples were taken from layers of 0.025-0.05m and 0.10-0.125m to determine the bulk density before and after the uniaxial compression test; soil deformation after the test; gravimetric moisture and degree of saturation of soil before the test. The precompression stress and compression index were obtained from compression curves. The soil bulk density of the typic Hapludalf presented biggest reduction after three passes of the skidder, due the superposition of the tractor passes and its pressure during wood dragging. The soil resistance to penetration had the biggest values, indicating the biggest degradation due to the forest harvest. After three steps of the skidder the compaction took place with bigger intensity in the soil surface and that had a uniform distribution in the layers of the soil profile. Before the harvest, after the forest cut, after one step of the skidder and after the wood retreat from shipyard the compaction took place more in the vertical direction. Considering the larger deformations and compression index, the soil should be trafficked with degree of saturation of 65 to 69% to avoid larger deformations and reduce susceptibility of soil to compaction. In the abrupt Hapludalf the soil compaction was smaller. Such a fact was indicated by smaller soil resistance to the mechanical penetration, which indicates a less degree of compaction. The soil saturated hydraulic conductivity was the parameter that better expressed the compaction of the Alfisols.Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorO conhecimento dos procedimentos envolvidos na colheita florestal, bem como os danos provocados pelo sistema de colheita é importante para se realizar um manejo adequado no solo, melhorar a produção de madeira e reduzir a degradação do solo. O objetivo deste estudo foi avaliar a influência das diferentes operações da colheita florestal nas propriedades físicas de um Argissolo Vermelho Distrófico típico e um Argissolo Vermelho Distrófico abrúptico, considerando que o tráfego das máquinas, geralmente, resulta em impactos no ecossistema, de forma a influenciar a compactação do solo e a produtividade da floresta. A pesquisa foi realizada em áreas sob floresta comercial de Pinus taeda, com 17 anos de idade. Os tratamentos, constituídos pelas diferentes etapas da colheita florestal foram: antes da colheita florestal; após o corte das árvores; após o arraste com uma passada do skidder; após o arraste com três passadas do skidder e após a retirada da madeira do estaleiro. Amostras de solo com estrutura preservada foram coletadas nas camadas de 0,00-0,05; 0,05-0,10; 0,10-0,20; 0,20-0,30 e 0,30-0,40m para determinação da densidade, da microporosidade, da macroporosidade, da porosidade total, da umidade gravimétrica e da condutividade hidráulica do solo saturado. A resistência do solo à penetração foi avaliada até 0,50m de profundidade. No estudo do comportamento compressivo do solo, foram coletadas amostras com estrutura preservada nas camadas de 0,025-0,05m e de 0,10-0,125m, determinando-se a densidade do solo antes e ao final do teste de compressão uniaxial, a deformação ao final do teste, a umidade gravimétrica e grau de saturação antes do teste de compressão e a pressão de preconsolidação e índice de compressão. Os resultados obtidos indicam que no PVd típico, a densidade do solo apresentou maior redução após três passadas do skidder, fato relacionado à sobreposição das passadas e a pressão exercida pela máquina sobre o solo na atividade de arraste da madeira. O solo apresentou os maiores valores de resistência à penetração mecânica, indicando a maior degradação devido à colheita florestal. Após três passadas do skidder a compactação ocorreu com maior intensidade na superfície do solo e essa apresentou uma distribuição uniforme nas camadas do perfil. Antes da colheita, após o corte florestal, após uma passada do skidder e após a retirada da madeira do estaleiro a compactação ocorreu mais no sentido vertical. Considerando a deformação do solo e o índice de compressão, o solo deve ser trafegado com grau de saturação de 65 a 69%, para evitar maiores deformações e reduzir a suscetibilidade à compactação. No Argissolo Vermelho Distrófico abrúptico a compactação do solo ocorreu em menor intensidade. Tal fato foi comprovado pela menor resistência do solo à penetração mecânica, relacionada a uma menor compactação do solo. A condutividade hidráulica do solo foi o parâmetro que melhor expressou a compactação dos Argissolos.Universidade Federal de Santa MariaBRRecursos Florestais e Engenharia FlorestalUFSMPrograma de Pós-Graduação em Engenharia FlorestalReinert, Dalvan Joséhttp://lattes.cnpq.br/0341150684713995Lima, Cláudia Liane Rodrigues dehttp://lattes.cnpq.br/2551244866523249Reichert, José Miguelhttp://lattes.cnpq.br/0910765178697312Fleig, Frederico Dimashttp://lattes.cnpq.br/4578837964834013Haselein, Clovis Robertohttp://lattes.cnpq.br/5522749609471065Cechin, Nirlene Fernandes2008-04-152008-04-152007-07-31info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfapplication/pdfCECHIN, Nirlene Fernandes. Compaction of two alfisols in the forest harvest of Pinus taeda L.. 2007. 136 f. Tese (Doutorado em Recursos Florestais e Engenharia Florestal) - Universidade Federal de Santa Maria, Santa Maria, 2007.http://repositorio.ufsm.br/handle/1/3714ark:/26339/001300000gvwmporinfo:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM2023-01-04T16:52:29Zoai:repositorio.ufsm.br:1/3714Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2023-01-04T16:52:29Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false
dc.title.none.fl_str_mv Compactação de dois argissolos na colheita florestal de Pinus taeda L.
Compaction of two alfisols in the forest harvest of Pinus taeda L.
title Compactação de dois argissolos na colheita florestal de Pinus taeda L.
spellingShingle Compactação de dois argissolos na colheita florestal de Pinus taeda L.
Cechin, Nirlene Fernandes
Compactação
Grau de saturação
Compressibilidade
Resistência à penetração
Compaction
Degree of saturation
Compressibility
Soil penetration resistance
CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL
title_short Compactação de dois argissolos na colheita florestal de Pinus taeda L.
title_full Compactação de dois argissolos na colheita florestal de Pinus taeda L.
title_fullStr Compactação de dois argissolos na colheita florestal de Pinus taeda L.
title_full_unstemmed Compactação de dois argissolos na colheita florestal de Pinus taeda L.
title_sort Compactação de dois argissolos na colheita florestal de Pinus taeda L.
author Cechin, Nirlene Fernandes
author_facet Cechin, Nirlene Fernandes
author_role author
dc.contributor.none.fl_str_mv Reinert, Dalvan José
http://lattes.cnpq.br/0341150684713995
Lima, Cláudia Liane Rodrigues de
http://lattes.cnpq.br/2551244866523249
Reichert, José Miguel
http://lattes.cnpq.br/0910765178697312
Fleig, Frederico Dimas
http://lattes.cnpq.br/4578837964834013
Haselein, Clovis Roberto
http://lattes.cnpq.br/5522749609471065
dc.contributor.author.fl_str_mv Cechin, Nirlene Fernandes
dc.subject.por.fl_str_mv Compactação
Grau de saturação
Compressibilidade
Resistência à penetração
Compaction
Degree of saturation
Compressibility
Soil penetration resistance
CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL
topic Compactação
Grau de saturação
Compressibilidade
Resistência à penetração
Compaction
Degree of saturation
Compressibility
Soil penetration resistance
CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL
description The knowledge of soil damage due forest harvest is important for adequate management of soil physical conditions, to increase wood yield and decrease soil degradation. This study evaluates the influence of different operations of forest harvest on the soil physical properties of a typical Hapludalf and an abrupt Hapludalf. The research was realized in areas under 17 years old commercial forest of Pinus taeda. The soil physical properties were evaluated before and after the forest harvest. The treatments, constituted by the different operations of Pinus harvest were as following: before the harvest; after trees cut; after wood dragging with one pass of the skidder; after wood dragging with three passes of the skidder and after removing the wood from storing place (piles). Undisturbed soil samples were taken from layers of 0.00-0.05; 0.05-0.10; 0.10-0.20; 0.20-0.30 and 0.30-0.40m to determine bulk density, microporosity, macroporosity, total porosity, gravimetric soil moisture and saturated hydraulic conductivity. Soil resistance to penetration was evaluated either. To evaluate compressive behavior of soil, undisturbed soil samples were taken from layers of 0.025-0.05m and 0.10-0.125m to determine the bulk density before and after the uniaxial compression test; soil deformation after the test; gravimetric moisture and degree of saturation of soil before the test. The precompression stress and compression index were obtained from compression curves. The soil bulk density of the typic Hapludalf presented biggest reduction after three passes of the skidder, due the superposition of the tractor passes and its pressure during wood dragging. The soil resistance to penetration had the biggest values, indicating the biggest degradation due to the forest harvest. After three steps of the skidder the compaction took place with bigger intensity in the soil surface and that had a uniform distribution in the layers of the soil profile. Before the harvest, after the forest cut, after one step of the skidder and after the wood retreat from shipyard the compaction took place more in the vertical direction. Considering the larger deformations and compression index, the soil should be trafficked with degree of saturation of 65 to 69% to avoid larger deformations and reduce susceptibility of soil to compaction. In the abrupt Hapludalf the soil compaction was smaller. Such a fact was indicated by smaller soil resistance to the mechanical penetration, which indicates a less degree of compaction. The soil saturated hydraulic conductivity was the parameter that better expressed the compaction of the Alfisols.
publishDate 2007
dc.date.none.fl_str_mv 2007-07-31
2008-04-15
2008-04-15
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv CECHIN, Nirlene Fernandes. Compaction of two alfisols in the forest harvest of Pinus taeda L.. 2007. 136 f. Tese (Doutorado em Recursos Florestais e Engenharia Florestal) - Universidade Federal de Santa Maria, Santa Maria, 2007.
http://repositorio.ufsm.br/handle/1/3714
dc.identifier.dark.fl_str_mv ark:/26339/001300000gvwm
identifier_str_mv CECHIN, Nirlene Fernandes. Compaction of two alfisols in the forest harvest of Pinus taeda L.. 2007. 136 f. Tese (Doutorado em Recursos Florestais e Engenharia Florestal) - Universidade Federal de Santa Maria, Santa Maria, 2007.
ark:/26339/001300000gvwm
url http://repositorio.ufsm.br/handle/1/3714
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
BR
Recursos Florestais e Engenharia Florestal
UFSM
Programa de Pós-Graduação em Engenharia Florestal
publisher.none.fl_str_mv Universidade Federal de Santa Maria
BR
Recursos Florestais e Engenharia Florestal
UFSM
Programa de Pós-Graduação em Engenharia Florestal
dc.source.none.fl_str_mv reponame:Manancial - Repositório Digital da UFSM
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Manancial - Repositório Digital da UFSM
collection Manancial - Repositório Digital da UFSM
repository.name.fl_str_mv Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)
repository.mail.fl_str_mv atendimento.sib@ufsm.br||tedebc@gmail.com
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