Compactação de dois argissolos na colheita florestal de Pinus taeda L.
Autor(a) principal: | |
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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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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 |
_version_ |
1815172341590654976 |