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| Skorupa,Alba Lucia Araujo; Tassinari,Diego; Silva,Sérgio Henrique Godinho; Poggere,Giovana Clarice; Zinn,Yuri Lopes; Curi,Nilton. |
| ABSTRACT Soil internal drainage plays a major role in soil genesis, and it is mostly dependent on topography. However, the existence of sedimentary and meta-sedimentary rock strata with variable dip angle allows for strong differences in internal drainage for identical topographies, which result in a marked differentiation in the properties of overlain soils. This work aimed to investigate the micromorphology of soils formed from different dip angles of rock strata and their relationships to internal drainage, in Minas Gerais, Brazil. Over horizontal strata, a Xanthic Acrudox lacking hematite and with blocky structure has developed. Over strata with 45° dip angle, strong drainage has resulted in intense desilication, forming a Rhodic Acrudox having... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil genesis; Xanthization; Rubefication; Plinthite; Saprolith. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000400443 |
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| Martins,Paula Cristina Caruana; Dias Junior,Moacir de Souza; Ajayi,Ayodele Ebenezer; Takahashi,Ernesto Norio; Tassinari,Diego. |
| ABSTRACT Traffic of farm machinery during harvest and logging operations has been identified as the main source of soil structure degradation in forestry activity. Soil susceptibility to compaction and the amount of compaction caused by each forest harvest operation differs according to a number of factors (such as soil strength, soil texture, kind of equipment, traffic intensity, among many others), what requires the adequate assessment of soil compaction under different traffic conditions. The objectives of this study were to determine the susceptibility to compaction of five soil classes with different textures under eucalyptus forests based on their load bearing capacity models; and to determine, from these models and the precompression stresses... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Harvester; Forwarder; Feller buncher; Clambunk; Precompression stress.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000100058 |
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| Andrade,Maria Luiza de Carvalho; Tassinari,Diego; Dias Junior,Moacir de Souza; Martins,Ricardo Previdente; Rocha,Wellington Willian; Souza,Zélio Resende de. |
| ABSTRACT 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Harvester; Forwarder; Precompression stress; Soil load bearing capacity.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200191 |
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