Propriedades físicas e mecânicas de latossolos em diferentes manejos florestais

Silva, Arystides Resende; Dias, Moacir de Souza; Leite, Fernando Palha

doi:10.1590/s1413-70542010000600019

Cited by 5 publications

(7 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the B horizon, the number of compacted samples also decreased when the soil was covered with plant residues during traffic. Also the increase in bulk density was higher when soil was trafficked bare in comparison to the soil trafficked with residue cover (Table 5), as expected and in accordance with several other studies (Martins et al, 2013;Leite, 2010).…”

Section: Soil Compaction Caused By Harvester's Trafficsupporting

confidence: 92%

“…In forestry production, wood harvest in extensive areas demands the use of increasingly larger and heavier farm machinery Leite, 2010;Suzuki et al, 2014), which can exert elevated pressures upon the soil Vossbrink;Becker, 2004;Martins et al, 2013). This sort of farm machinery may cause changes in soil physical and mechanical properties, resulting in soil compaction and soil structure degradation (Dias Junior et al, 2005;Dias Junior et al, 2008;Ampoorter et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…It has been used as an indicator of the soil mechanical strength and load bearing capacity to estimate more accurately the risk of soil compaction in various studies regarding forest harvest operations (Dias Junior et al, 2008Martins et al, 2013;Leite, 2010). Soil precompression stress and hence soil load bearing capacity decrease exponentially with increase in soil moisture (Lima et al, 2006;Mosaddeghi et al, 2006;Dias Junior et al, 2007;Ajayi et al, 2013); making these soil properties specially relevant in management strategies aiming to minimize the risk of additional soil compaction caused by traffic with farm machinery (Dias Junior et al, 2005;Pais et al, 2013;Severiano et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Several factors affect soil compaction in eucalypt forests, such as soil type and soil horizon/layer ; climatic season and, also related, soil moisture (Dias Junior et al, 2005); machinery kind , 2005Lopes et al, 2015); traffic intensity (Dias Junior et al, 2008;Martins et al, 2013;Pezzoni Filho et al, 2014); machinery load Leite, 2011); and soil cover Leite, 2007Leite, , 2010Szymczak et al, 2014). It is, therefore, fundamental to understand how machinery traffic during harvest and logging operations in forestry production affects soil load bearing capacity and the occurrence of soil compaction, especially when mechanized operations are performed on excessively moist conditions (Dias Junior et al, 2005;Kamimura et al, 2012;Vischi Filho et al, 2015), aiming to adapt management practices in order to preserve soil structure and forests yield potential.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Soil compaction caused by harvest and logging operations in eucalyptus forests in coarse-textured soils from northeastern Brazil

et al. 2017

Self Cite

View full text Add to dashboard Cite

Planted forests occupy more than 6.5 million ha in Brazil, where harvest and logging operations are performed with increasingly heavier machinery, increasing the risk of soil compaction. Soil compaction can be avoided if soil load bearing capacity is not exceeded, what makes it important to assess both the soil strength and the impact of different operations. The aim of this study was to evaluate the load bearing capacity of some coarse textured soils (two Hapludult and one Haplorthod) in two soil horizons (BA and B), from northeastern Brazil; and to assess the impact of harvest and logging operations performed with harvester and forwarder. Although the Haplorthod presented higher load bearing capacity in both the BA horizon (for the whole moisture range) and the B horizon (for higher water contents), it suffered the greatest soil compaction. Traffic with the harvester resulted in soil compaction in both the BA and the B horizons, but the increase in bulk density was higher on the later, reaching 18.7% in the Haplorthod. The forwarder traffic intensity and the presence of plant residue cover significantly affected the occurrence of soil compaction. In the BA horizon, the increase in soil bulk density for different forwarder traffic intensities was 3 passes ~ 6 passes < 12 passes ~ 16 passes. The increase in bulk density was higher in the Haplorthod, reaching 32% after 16 forwarder passes over bare soil. Significant linear regressions were obtained from the number of forwarder passes and the increase in bulk density. Index terms:Harvester; forwarder; precompression stress; soil load bearing capacity. RESUMOAs florestas plantadas ocupam mais de 6,5 milhões de ha no Brasil, nas quais as operações de colheita e baldeio são realizadas com maquinário cada vez mais robusto, o que aumenta o risco de compactação do solo. A compactação do solo pode ser evitada se a sua capacidade de suporte de carga não for excedida, o que torna importante a avaliação tanto da resistência mecânica do solo quanto o impacto de diferentes operações. O objetivo deste estudo foi avaliar a capacidade de suporte de carga de solos de textura grosseira (dois Hapludult e um Haplorthod) em dois horizontes (BA e B) do Nordeste do Brasil; além de avaliar o impacto das operações de colheita e baldeio de madeira realizadas com harvester e forwarder. Apesar de o Haplorthod ter apresentado a maior capacidade de suporte de carga no horizonte BA (para toda a faixa de umidade) e no horizonte B (para maiores umidades) ele foi a classe de solo que apresentou maior compactação. O tráfego com o harvester resultou em compactação tanto no horizonte BA quanto no B, mas o aumento da densidade do solo foi maior no último, chegando a 18,7% no Haplorthod. A intensidade de tráfego do forwarder e a presença de resíduos de plantas na superfície do solo afetaram significativamente a ocorrência de compactação do solo. No horizonte BA, o aumento da densidade do solo em decorrência da intensidade de tráfego do forwarder foi de 3 passadas ~ 6 passadas < 12 passadas ~ 1...

show abstract

Section: Soil Compaction Caused By Harvester's Trafficsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Soil compaction caused by harvest and logging operations in eucalyptus forests in coarse-textured soils from northeastern Brazil

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…No entanto, segundo Seixas e Souza (2007), 80 % do incremento da compactação de um solo ocorreram após as cinco primeiras passadas de um forwarder. Estudando o efeito do número de passadas de um forwarder nas regiões de Belo Oriente e São João Evangelista, Silva et al (2010) …”

unclassified