Uso de indicadores hidrológicos para classificação de trechos de estradas florestais quanto ao escoamento superficial

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorDe Barros Ferraz, Silvio Frosini
dc.creatorMarson, Júlio César
dc.creatorFontana, Carolina Rodrigues
dc.creatorDe Paula Lima, Walter
dc.date2014-05-27T11:22:34Z
dc.date2016-10-25T18:24:16Z
dc.date2014-05-27T11:22:34Z
dc.date2016-10-25T18:24:16Z
dc.date2007-09-01
dc.date.accessioned2017-04-06T01:26:21Z
dc.date.available2017-04-06T01:26:21Z
dc.identifierScientia Forestalis/Forest Sciences, n. 75, p. 39-49, 2007.
dc.identifier1413-9324
dc.identifierhttp://hdl.handle.net/11449/69863
dc.identifierhttp://acervodigital.unesp.br/handle/11449/69863
dc.identifierWOS:000208714600004
dc.identifier2-s2.0-36749062928.pdf
dc.identifier2-s2.0-36749062928
dc.identifierhttp://www.ipef.br/publicacoes/scientia/nr75/cap04.pdf
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/891040
dc.descriptionForest roads are frequently pointed as source of environmental problems related to erosion and they also influence harvest cost due to maintenance operations. Roads not well designed are sources of hydrological problems on catchments and the current attention to sustainability of forest exploration projects point out to the need of diagnostics tools for guiding the redesign of the road system. At this study, runoff hydrological indicators for forest road segments were assessed in order to identify critical points of erosion and water concentration on soils. A road network of a forest production area was divided into 252 road segments that were used as observations of four variables: mean terrain slope, main segment slope, LS factor and topographic index. The data analysis was based on descriptive statistics for outliers' identification, principal component analysis and for variability study between variables and between observations, and cluster analysis for similar segments groups' identification. The results allowed classifying roads segments into five mains road types: road on the ridge, on the valley, on the slopes, on the slopes but in a contour line and on the steepest slope. The indicators were able to highlight the most critical segments that differ of others and are potential sources of erosion and water accumulation problems on forest roads. The principal component analysis showed two main variability sources related to terrain topographic characteristics and also road design, showing that indicators represent well those elements. The methodology seems to be appropriated for identification of critical road segments that need to be redesigned and also for road network planning at new forest exploration projects.
dc.languagepor
dc.relationScientia Forestalis/Forest Sciences
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectErosion
dc.subjectGeographic information system
dc.subjectHydrological modeling
dc.subjectForest road
dc.subjectHydrological indicators
dc.subjectRoad network
dc.subjectRunoff assessment
dc.subjectGeographic information systems
dc.subjectHydrology
dc.subjectPrincipal component analysis
dc.subjectRoads and streets
dc.subjectForestry
dc.subjectForests
dc.subjectGIS
dc.subjectRoads
dc.titleUso de indicadores hidrológicos para classificação de trechos de estradas florestais quanto ao escoamento superficial
dc.typeOtro


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