COMPACTAÇÃO CAUSADA PELO TRÁFEGO DE FELLER BUNCHER E SKIDDER EM UM NEOSSOLO REGOLÍTICO SOB DISTINTAS UMIDADES
This research evaluated the influence of water content on soil compaction of an Entisol under traffic of forest harvesting machines and developed models to estimate soil compaction. The study was conducted in areas of a forest company, located in the state of Santa Catarina, Brazil. The sampling was...
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Universidade Federal de Santa Maria
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Series: | Ciência Florestal |
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doaj-20fb2c85c45c4313b7e8fe6700de7aef2020-11-25T01:39:00ZporUniversidade Federal de Santa MariaCiência Florestal0103-99541980-50982015-01-01251239248COMPACTAÇÃO CAUSADA PELO TRÁFEGO DE FELLER BUNCHER E SKIDDER EM UM NEOSSOLO REGOLÍTICO SOB DISTINTAS UMIDADESJean Alberto SampietroEduardo da Silva LopesJosé Miguel ReichertThis research evaluated the influence of water content on soil compaction of an Entisol under traffic of forest harvesting machines and developed models to estimate soil compaction. The study was conducted in areas of a forest company, located in the state of Santa Catarina, Brazil. The sampling was performed under various conditions of soil moisture, contemplating three classes: Ug1 (Ug < 0,30 kg kg-1); Ug2 (0,30 ≤ Ug < 0,40 kg kg-1); Ug3 (Ug ≥ 0,40 kg kg-1). The soil bulk density was determined (Ds), total (Pt) and air-filled porosity (PA) and penetration resistance (RP), under the conditions without traffic (WT) and after traffic (AT) of a Feller-buncher (CAT 522) and a Skidder (CAT 545) employed in wood harvesting of Pinus taeda stands. Multiple regression equations were adjusted to estimate the soil penetration resistance, through arithmetic and logarithmic models with pure and mixed variables. The results indicate that in moisture condition above than 0,40 kg kg-1 (Ug3), the traffic promoted increase in Bd and PR of 10 and 24%, respectively, and decrease in αt and αair, in order of 12 and 43%. In low moisture content (Ug < 0,30 kg kg-1), the increase of Bd and PR was 3 and 13%, respectively, and the decrease of αair of 8% and without effect in αt. The stepwise logarithmic model with mixed variables (SLMM) showed the best results for the estimation of soil penetration resistance, but caution must be raised in their employment due to the possible influence of other factors in the estimation and determination of PR.http://www.redalyc.org/articulo.oa?id=53438248023 |
collection |
DOAJ |
language |
Portuguese |
format |
Article |
sources |
DOAJ |
author |
Jean Alberto Sampietro Eduardo da Silva Lopes José Miguel Reichert |
spellingShingle |
Jean Alberto Sampietro Eduardo da Silva Lopes José Miguel Reichert COMPACTAÇÃO CAUSADA PELO TRÁFEGO DE FELLER BUNCHER E SKIDDER EM UM NEOSSOLO REGOLÍTICO SOB DISTINTAS UMIDADES Ciência Florestal |
author_facet |
Jean Alberto Sampietro Eduardo da Silva Lopes José Miguel Reichert |
author_sort |
Jean Alberto Sampietro |
title |
COMPACTAÇÃO CAUSADA PELO TRÁFEGO DE FELLER BUNCHER E SKIDDER EM UM NEOSSOLO REGOLÍTICO SOB DISTINTAS UMIDADES |
title_short |
COMPACTAÇÃO CAUSADA PELO TRÁFEGO DE FELLER BUNCHER E SKIDDER EM UM NEOSSOLO REGOLÍTICO SOB DISTINTAS UMIDADES |
title_full |
COMPACTAÇÃO CAUSADA PELO TRÁFEGO DE FELLER BUNCHER E SKIDDER EM UM NEOSSOLO REGOLÍTICO SOB DISTINTAS UMIDADES |
title_fullStr |
COMPACTAÇÃO CAUSADA PELO TRÁFEGO DE FELLER BUNCHER E SKIDDER EM UM NEOSSOLO REGOLÍTICO SOB DISTINTAS UMIDADES |
title_full_unstemmed |
COMPACTAÇÃO CAUSADA PELO TRÁFEGO DE FELLER BUNCHER E SKIDDER EM UM NEOSSOLO REGOLÍTICO SOB DISTINTAS UMIDADES |
title_sort |
compactação causada pelo tráfego de feller buncher e skidder em um neossolo regolítico sob distintas umidades |
publisher |
Universidade Federal de Santa Maria |
series |
Ciência Florestal |
issn |
0103-9954 1980-5098 |
publishDate |
2015-01-01 |
description |
This research evaluated the influence of water content on soil compaction of an Entisol under traffic of forest harvesting machines and developed models to estimate soil compaction. The study was conducted in areas of a forest company, located in the state of Santa Catarina, Brazil. The sampling was performed under various conditions of soil moisture, contemplating three classes: Ug1 (Ug < 0,30 kg kg-1); Ug2 (0,30 ≤ Ug < 0,40 kg kg-1); Ug3 (Ug ≥ 0,40 kg kg-1). The soil bulk density was determined (Ds), total (Pt) and air-filled porosity (PA) and penetration resistance (RP), under the conditions without traffic (WT) and after traffic (AT) of a Feller-buncher (CAT 522) and a Skidder (CAT 545) employed in wood harvesting of Pinus taeda stands. Multiple regression equations were adjusted to estimate the soil penetration resistance, through arithmetic and logarithmic models with pure and mixed variables. The results indicate that in moisture condition above than 0,40 kg kg-1 (Ug3), the traffic promoted increase in Bd and PR of 10 and 24%, respectively, and decrease in αt and αair, in order of 12 and 43%. In low moisture content (Ug < 0,30 kg kg-1), the increase of Bd and PR was 3 and 13%, respectively, and the decrease of αair of 8% and without effect in αt. The stepwise logarithmic model with mixed variables (SLMM) showed the best results for the estimation of soil penetration resistance, but caution must be raised in their employment due to the possible influence of other factors in the estimation and determination of PR. |
url |
http://www.redalyc.org/articulo.oa?id=53438248023 |
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