Causes of morphological discontinuities in soils of Depressão Central, Rio Grande do Sul State, Brazil

Detalhes bibliográficos
Autor(a) principal: Michelon,Cristiane Regina
Data de Publicação: 2010
Outros Autores: Azevedo,Antonio Carlos de, Pedron,Fabrício de Araújo, Dalmolin,Ricardo Simão Diniz, Stürmmer,Sidinei Klochnner, Gonçalves,Juliana, Jesus,Sérgio Luis de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000300010
Resumo: Morphological, particularly textural, discontinuities between horizons increase soil erodibility in Depressão Central, Rio Grande do Sul State (Brazil). Characterization of such discontinuities would help to understand landscape evolution and to model near-surface hydrology. The objective of this research was to explore the relationship between morphological discontinuity and deposition of transported materials during pedogenesis. Transported material was meant to be mineral particles found in the soil profile, transported probably by water or gravity, that were not present neither in the parent material nor derived from it. Five soils of this region (two Alfisols, two Ultisols and one Mollisol) were sampled and morphological, sand grain size statistics, chemical and mineralogical analyses were used to search for evidences of deposition of transported materials. Two soils had abrupt textural change but no evidence of deposition of transported materials, two soils had less contrasting morphology and some characteristics that are possibly related to deposition, and one soil had no morphological discontinuity, but had deposition of material enriched in magnetite-maghemite in the sand fraction of the A horizon. Therefore, there were no relationship between morphological discontinuity and deposition of transported materials for these profiles in the Depressão Central.
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spelling Causes of morphological discontinuities in soils of Depressão Central, Rio Grande do Sul State, Brazilsoil morphologysubtropical soilssoil discontinuityMorphological, particularly textural, discontinuities between horizons increase soil erodibility in Depressão Central, Rio Grande do Sul State (Brazil). Characterization of such discontinuities would help to understand landscape evolution and to model near-surface hydrology. The objective of this research was to explore the relationship between morphological discontinuity and deposition of transported materials during pedogenesis. Transported material was meant to be mineral particles found in the soil profile, transported probably by water or gravity, that were not present neither in the parent material nor derived from it. Five soils of this region (two Alfisols, two Ultisols and one Mollisol) were sampled and morphological, sand grain size statistics, chemical and mineralogical analyses were used to search for evidences of deposition of transported materials. Two soils had abrupt textural change but no evidence of deposition of transported materials, two soils had less contrasting morphology and some characteristics that are possibly related to deposition, and one soil had no morphological discontinuity, but had deposition of material enriched in magnetite-maghemite in the sand fraction of the A horizon. Therefore, there were no relationship between morphological discontinuity and deposition of transported materials for these profiles in the Depressão Central.Escola Superior de Agricultura "Luiz de Queiroz"2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000300010Scientia Agricola v.67 n.3 2010reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162010000300010info:eu-repo/semantics/openAccessMichelon,Cristiane ReginaAzevedo,Antonio Carlos dePedron,Fabrício de AraújoDalmolin,Ricardo Simão DinizStürmmer,Sidinei KlochnnerGonçalves,JulianaJesus,Sérgio Luis deeng2010-06-14T00:00:00Zoai:scielo:S0103-90162010000300010Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2010-06-14T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Causes of morphological discontinuities in soils of Depressão Central, Rio Grande do Sul State, Brazil
title Causes of morphological discontinuities in soils of Depressão Central, Rio Grande do Sul State, Brazil
spellingShingle Causes of morphological discontinuities in soils of Depressão Central, Rio Grande do Sul State, Brazil
Michelon,Cristiane Regina
soil morphology
subtropical soils
soil discontinuity
title_short Causes of morphological discontinuities in soils of Depressão Central, Rio Grande do Sul State, Brazil
title_full Causes of morphological discontinuities in soils of Depressão Central, Rio Grande do Sul State, Brazil
title_fullStr Causes of morphological discontinuities in soils of Depressão Central, Rio Grande do Sul State, Brazil
title_full_unstemmed Causes of morphological discontinuities in soils of Depressão Central, Rio Grande do Sul State, Brazil
title_sort Causes of morphological discontinuities in soils of Depressão Central, Rio Grande do Sul State, Brazil
author Michelon,Cristiane Regina
author_facet Michelon,Cristiane Regina
Azevedo,Antonio Carlos de
Pedron,Fabrício de Araújo
Dalmolin,Ricardo Simão Diniz
Stürmmer,Sidinei Klochnner
Gonçalves,Juliana
Jesus,Sérgio Luis de
author_role author
author2 Azevedo,Antonio Carlos de
Pedron,Fabrício de Araújo
Dalmolin,Ricardo Simão Diniz
Stürmmer,Sidinei Klochnner
Gonçalves,Juliana
Jesus,Sérgio Luis de
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Michelon,Cristiane Regina
Azevedo,Antonio Carlos de
Pedron,Fabrício de Araújo
Dalmolin,Ricardo Simão Diniz
Stürmmer,Sidinei Klochnner
Gonçalves,Juliana
Jesus,Sérgio Luis de
dc.subject.por.fl_str_mv soil morphology
subtropical soils
soil discontinuity
topic soil morphology
subtropical soils
soil discontinuity
description Morphological, particularly textural, discontinuities between horizons increase soil erodibility in Depressão Central, Rio Grande do Sul State (Brazil). Characterization of such discontinuities would help to understand landscape evolution and to model near-surface hydrology. The objective of this research was to explore the relationship between morphological discontinuity and deposition of transported materials during pedogenesis. Transported material was meant to be mineral particles found in the soil profile, transported probably by water or gravity, that were not present neither in the parent material nor derived from it. Five soils of this region (two Alfisols, two Ultisols and one Mollisol) were sampled and morphological, sand grain size statistics, chemical and mineralogical analyses were used to search for evidences of deposition of transported materials. Two soils had abrupt textural change but no evidence of deposition of transported materials, two soils had less contrasting morphology and some characteristics that are possibly related to deposition, and one soil had no morphological discontinuity, but had deposition of material enriched in magnetite-maghemite in the sand fraction of the A horizon. Therefore, there were no relationship between morphological discontinuity and deposition of transported materials for these profiles in the Depressão Central.
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000300010
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000300010
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-90162010000300010
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Escola Superior de Agricultura "Luiz de Queiroz"
publisher.none.fl_str_mv Escola Superior de Agricultura "Luiz de Queiroz"
dc.source.none.fl_str_mv Scientia Agricola v.67 n.3 2010
reponame:Scientia Agrícola (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Scientia Agrícola (Online)
collection Scientia Agrícola (Online)
repository.name.fl_str_mv Scientia Agrícola (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv scientia@usp.br||alleoni@usp.br
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