Avaliação da remoção de sedimentos pela operação de nivelamento de estradas florestais
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.ipef.br/publicacoes/scientia/nr76/cap10.pdf http://hdl.handle.net/11449/70165 |
Resumo: | The forest roads construction inevitably causes environmental impacts to adjacent ecosystems and streams. Also the routine activities of roads maintenance may similarly cause environmental impacts of about the same magnitude. The material scraped from the roadway by the motor grader is usually distributed along the roadsides, from where it may easily be washed out toward the streams. Therefore, quantifying the amount of sediments removed during road maintenance activities may provide important information of this stream sedimentation potential. For this purpose, three forest roads were divided in 30 m long segments, marked with leveled stakes. A nylon thread was then stretched across the leveled stakes and the distance from the nylon thread to the road surface was measured before and after the mechanical scraping of the road. The average removal of sediments was of 2,13 cm. Considering the mean density of soil 1,6 g cm -3, the average removal of sediments was of 341 t ha -1 of road. Considering still a 3,9 m wide and 150 m long road as an example, the total amount of removed sediments would be around 19,9 t. Road maintenance, therefore, must be well planned in order to avoid or minimize stream sedimentation. |
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Avaliação da remoção de sedimentos pela operação de nivelamento de estradas florestaisEvaluation of the amount of sediment removed by the regrading operation in forests roadsForest roadsMaintenanceRemoved sedimentsBefore and afterMean densityMechanical scrapingNylon threadRoad maintenanceRoad surfacesEnvironmental impactPolyamidesRayonRiversSedimentationSedimentologyRoads and streetsThe forest roads construction inevitably causes environmental impacts to adjacent ecosystems and streams. Also the routine activities of roads maintenance may similarly cause environmental impacts of about the same magnitude. The material scraped from the roadway by the motor grader is usually distributed along the roadsides, from where it may easily be washed out toward the streams. Therefore, quantifying the amount of sediments removed during road maintenance activities may provide important information of this stream sedimentation potential. For this purpose, three forest roads were divided in 30 m long segments, marked with leveled stakes. A nylon thread was then stretched across the leveled stakes and the distance from the nylon thread to the road surface was measured before and after the mechanical scraping of the road. The average removal of sediments was of 2,13 cm. Considering the mean density of soil 1,6 g cm -3, the average removal of sediments was of 341 t ha -1 of road. Considering still a 3,9 m wide and 150 m long road as an example, the total amount of removed sediments would be around 19,9 t. Road maintenance, therefore, must be well planned in order to avoid or minimize stream sedimentation.Departamento de Ciências Florestais Escola Superior de Agricultura Luiz de Queiroz Universidade de São Paulo, Caixa Postal 9, Piracicaba, SP - 13400-970Departamento de Ecologia Instituto de Biociências Universidade Estadual Paulista, Avenida 24A, 1515 - Rio Claro, SP - 13506-900Departamento de Ecologia Instituto de Biociências Universidade Estadual Paulista, Avenida 24A, 1515 - Rio Claro, SP - 13506-900Universidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Fontana, Carolina RodriguesDe Paula Lima, WalterDe Barros Ferraz, Silvio Frosini [UNESP]2014-05-27T11:22:44Z2014-05-27T11:22:44Z2007-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article103-109application/pdfhttp://www.ipef.br/publicacoes/scientia/nr76/cap10.pdfScientia Forestalis/Forest Sciences, n. 76, p. 103-109, 2007.1413-9324http://hdl.handle.net/11449/70165WOS:0002087147000102-s2.0-459490977582-s2.0-45949097758.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporScientia Forestalis/Forest Sciences0.5000,495info:eu-repo/semantics/openAccess2023-12-16T06:22:29Zoai:repositorio.unesp.br:11449/70165Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:30:26.206941Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Avaliação da remoção de sedimentos pela operação de nivelamento de estradas florestais Evaluation of the amount of sediment removed by the regrading operation in forests roads |
title |
Avaliação da remoção de sedimentos pela operação de nivelamento de estradas florestais |
spellingShingle |
Avaliação da remoção de sedimentos pela operação de nivelamento de estradas florestais Fontana, Carolina Rodrigues Forest roads Maintenance Removed sediments Before and after Mean density Mechanical scraping Nylon thread Road maintenance Road surfaces Environmental impact Polyamides Rayon Rivers Sedimentation Sedimentology Roads and streets |
title_short |
Avaliação da remoção de sedimentos pela operação de nivelamento de estradas florestais |
title_full |
Avaliação da remoção de sedimentos pela operação de nivelamento de estradas florestais |
title_fullStr |
Avaliação da remoção de sedimentos pela operação de nivelamento de estradas florestais |
title_full_unstemmed |
Avaliação da remoção de sedimentos pela operação de nivelamento de estradas florestais |
title_sort |
Avaliação da remoção de sedimentos pela operação de nivelamento de estradas florestais |
author |
Fontana, Carolina Rodrigues |
author_facet |
Fontana, Carolina Rodrigues De Paula Lima, Walter De Barros Ferraz, Silvio Frosini [UNESP] |
author_role |
author |
author2 |
De Paula Lima, Walter De Barros Ferraz, Silvio Frosini [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Fontana, Carolina Rodrigues De Paula Lima, Walter De Barros Ferraz, Silvio Frosini [UNESP] |
dc.subject.por.fl_str_mv |
Forest roads Maintenance Removed sediments Before and after Mean density Mechanical scraping Nylon thread Road maintenance Road surfaces Environmental impact Polyamides Rayon Rivers Sedimentation Sedimentology Roads and streets |
topic |
Forest roads Maintenance Removed sediments Before and after Mean density Mechanical scraping Nylon thread Road maintenance Road surfaces Environmental impact Polyamides Rayon Rivers Sedimentation Sedimentology Roads and streets |
description |
The forest roads construction inevitably causes environmental impacts to adjacent ecosystems and streams. Also the routine activities of roads maintenance may similarly cause environmental impacts of about the same magnitude. The material scraped from the roadway by the motor grader is usually distributed along the roadsides, from where it may easily be washed out toward the streams. Therefore, quantifying the amount of sediments removed during road maintenance activities may provide important information of this stream sedimentation potential. For this purpose, three forest roads were divided in 30 m long segments, marked with leveled stakes. A nylon thread was then stretched across the leveled stakes and the distance from the nylon thread to the road surface was measured before and after the mechanical scraping of the road. The average removal of sediments was of 2,13 cm. Considering the mean density of soil 1,6 g cm -3, the average removal of sediments was of 341 t ha -1 of road. Considering still a 3,9 m wide and 150 m long road as an example, the total amount of removed sediments would be around 19,9 t. Road maintenance, therefore, must be well planned in order to avoid or minimize stream sedimentation. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-12-01 2014-05-27T11:22:44Z 2014-05-27T11:22:44Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.ipef.br/publicacoes/scientia/nr76/cap10.pdf Scientia Forestalis/Forest Sciences, n. 76, p. 103-109, 2007. 1413-9324 http://hdl.handle.net/11449/70165 WOS:000208714700010 2-s2.0-45949097758 2-s2.0-45949097758.pdf |
url |
http://www.ipef.br/publicacoes/scientia/nr76/cap10.pdf http://hdl.handle.net/11449/70165 |
identifier_str_mv |
Scientia Forestalis/Forest Sciences, n. 76, p. 103-109, 2007. 1413-9324 WOS:000208714700010 2-s2.0-45949097758 2-s2.0-45949097758.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Scientia Forestalis/Forest Sciences 0.500 0,495 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
103-109 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129211907440640 |