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Provedor de dados:  Rev. Bras. Ciênc. Solo
País:  Brazil
Título:  Assessment of the soil compaction of two ultisols caused by logging operations
Autores:  Dias Junior,Moacir de Souza
Silva,Sérgio Ricardo
Santos,Nadívio Souza dos
Araujo-Junior,Cezar Francisco
Data:  2008-12-01
Ano:  2008
Palavras-chave:  Rut depth
Soil compaction
Preconsolidation pressure
Harvest operations
Resumo:  The impact of wood loads on bulk density and preconsolidation pressure and of harvester and forwarder traffic on rut depth, bulk density and preconsolidation pressure of two Ultisols were examined in this study. Our objective was to quantify the threshold beyond which significant soil compaction and rutting would occur. This study was carried out in the county of Eunápolis, state of Bahia, Brazil, (16 º 23 ' 17 '' S and 39 º 10 ' 06 '' W; altitude 80 m asl) in two Ultisols (PAd2 and PAd3) with different texture classes, in experimental areas with eucalypt plantation. The study involved measurements at the wood load site and machine driving at specific locations in the forest during logging operations. The treatments consisted of one harvester pass and, 8, 16 and 40 passes of a fully loaded forwarder. Thresholds were established based on the rut depth and percentage of preconsolidation pressure values in the region of additional soil compaction defined in the bearing capacity model. The percentage of soil samples with values of preconsolidation pressure in the region of additional soil compaction indicated a greater susceptibility of PAd3 than of PAd2 to soil compaction. The threshold levels established here based on preconsolidation pressure and rut depth indicated that no more than eight forwarder passes should be allowed in loading operations in order to minimize soil compaction.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Sociedade Brasileira de Ciência do Solo
Relação:  10.1590/S0100-06832008000600004
Formato:  text/html
Fonte:  Revista Brasileira de Ciência do Solo v.32 n.6 2008
Direitos:  info:eu-repo/semantics/openAccess

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