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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrossilvipastoril. Para informações adicionais entre em contato com cpamt.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
25/01/2016 |
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Data da última atualização: |
25/08/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
NASCIMENTO, A. F. do; FURQUIM, S. A. C.; GRAHAM, R. C.; BEIRIGO, R. M.; OLIVEIRA JUNIOR, J. C.; COUTO, E. G.; VIDAL-TORRADO, P. |
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Afiliação: |
ALEXANDRE FERREIRA DO NASCIMENTO, CPAMT; SHEILA A. C. FURQUIM, UNIFESP; ROBERT C. GRAHAM, University of California; RAPHAEL M. BEIRIGO, UFCG; JAIRO C. OLIVEIRA JUNIOR, UFTPR; EDUARDO G. COUTO, UFMT; PABLO VIDAL-TORRADO, USP. |
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Título: |
Pedogenesis in a Pleistocene fluvial system of the Northern Pantanal - Brazil. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Geoderma, v. 255-256, p. 58-72, 2015. |
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ISSN: |
0016-7061 |
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Idioma: |
Inglês |
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Conteúdo: |
Sedimentology and hydrology seem to play a predominant role in soil formation in the Pantanal, since the fluvial systems of this wetland provided Quaternary sediments and shaped the landscape. However, pedogenic processes are active in this region mainly due to the floods that occur during the summer and fall season. The goal of this work was to study the pedogenesis in a representative transect on the São Lourenço fluvial fan, which has an area of about 16,000 km2 and is one of the largest sedimentary compartments of the Northern Pantanal, West Central Brazil. A transect of 125 m was studied in the late Pleistocene sedimentary lobe of the fluvial fan, where four landform elements were identified (paleo-channel, paleo-levee, paleo-floodplain and mound) and described to show the soil horizon boundaries along the landform unit. Samples were collected from trenches, auger holes, and boreholes, and were analyzed for soil description and characterization. Soil analyses carried out were: macro- and micromorphological, physical, chemical, mineralogical, C isotope fractionation, and OSL dating analyses. The set of evidence shows that the studied transect originated from Pleistocene sediments due to the activity of the São Lourenço fluvial fan. The following soil-landform element relationships developed: Quartzipsamments in the paleo-channel; Plinthaquults in the paleo-levee and paleo-floodplain and; Natrustalfs in the mound. Evidences of pedogenic processes in the transect are: a) clay eluviation and illuviation, resulting in formation of the Bt horizon in the soils at the lower part of the transect and mound; b) gleization and plinthization, mainly at the lower part of the transect, resulting in formation of mottles, reduced soil matrix, and nodules (plinthite and petroplinthite); c) bioturbation, responsible for addition of materials at the soil surface, assisting in the formation/maintenance of the mound; and d) the sodium concentration, observed in soils that have higher clay contents, which are highest in the mound has the highest levels. MenosSedimentology and hydrology seem to play a predominant role in soil formation in the Pantanal, since the fluvial systems of this wetland provided Quaternary sediments and shaped the landscape. However, pedogenic processes are active in this region mainly due to the floods that occur during the summer and fall season. The goal of this work was to study the pedogenesis in a representative transect on the São Lourenço fluvial fan, which has an area of about 16,000 km2 and is one of the largest sedimentary compartments of the Northern Pantanal, West Central Brazil. A transect of 125 m was studied in the late Pleistocene sedimentary lobe of the fluvial fan, where four landform elements were identified (paleo-channel, paleo-levee, paleo-floodplain and mound) and described to show the soil horizon boundaries along the landform unit. Samples were collected from trenches, auger holes, and boreholes, and were analyzed for soil description and characterization. Soil analyses carried out were: macro- and micromorphological, physical, chemical, mineralogical, C isotope fractionation, and OSL dating analyses. The set of evidence shows that the studied transect originated from Pleistocene sediments due to the activity of the São Lourenço fluvial fan. The following soil-landform element relationships developed: Quartzipsamments in the paleo-channel; Plinthaquults in the paleo-levee and paleo-floodplain and; Natrustalfs in the mound. Evidences of pedogenic processes in the transect are: a) c... Mostrar Tudo |
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Thesaurus Nal: |
Soil formation; Wetland soils. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02728naa a2200229 a 4500
001 2035062
005 2023-08-25
008 2015 bl uuuu u00u1 u #d
022 $a0016-7061
100 1 $aNASCIMENTO, A. F. do
245 $aPedogenesis in a Pleistocene fluvial system of the Northern Pantanal - Brazil.$h[electronic resource]
260 $c2015
520 $aSedimentology and hydrology seem to play a predominant role in soil formation in the Pantanal, since the fluvial systems of this wetland provided Quaternary sediments and shaped the landscape. However, pedogenic processes are active in this region mainly due to the floods that occur during the summer and fall season. The goal of this work was to study the pedogenesis in a representative transect on the São Lourenço fluvial fan, which has an area of about 16,000 km2 and is one of the largest sedimentary compartments of the Northern Pantanal, West Central Brazil. A transect of 125 m was studied in the late Pleistocene sedimentary lobe of the fluvial fan, where four landform elements were identified (paleo-channel, paleo-levee, paleo-floodplain and mound) and described to show the soil horizon boundaries along the landform unit. Samples were collected from trenches, auger holes, and boreholes, and were analyzed for soil description and characterization. Soil analyses carried out were: macro- and micromorphological, physical, chemical, mineralogical, C isotope fractionation, and OSL dating analyses. The set of evidence shows that the studied transect originated from Pleistocene sediments due to the activity of the São Lourenço fluvial fan. The following soil-landform element relationships developed: Quartzipsamments in the paleo-channel; Plinthaquults in the paleo-levee and paleo-floodplain and; Natrustalfs in the mound. Evidences of pedogenic processes in the transect are: a) clay eluviation and illuviation, resulting in formation of the Bt horizon in the soils at the lower part of the transect and mound; b) gleization and plinthization, mainly at the lower part of the transect, resulting in formation of mottles, reduced soil matrix, and nodules (plinthite and petroplinthite); c) bioturbation, responsible for addition of materials at the soil surface, assisting in the formation/maintenance of the mound; and d) the sodium concentration, observed in soils that have higher clay contents, which are highest in the mound has the highest levels.
650 $aSoil formation
650 $aWetland soils
700 1 $aFURQUIM, S. A. C.
700 1 $aGRAHAM, R. C.
700 1 $aBEIRIGO, R. M.
700 1 $aOLIVEIRA JUNIOR, J. C.
700 1 $aCOUTO, E. G.
700 1 $aVIDAL-TORRADO, P.
773 $tGeoderma$gv. 255-256, p. 58-72, 2015.
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| 11. |  | CEPEDA, M. C.; SOUZA JUNIOR, C. L. de; PANDEY, S.; LEON, L. N. Efeitos gênicos e oscilação genética associados a seleção recorrente intrapopulacional na população de milho SA3. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 8, p. 1585-93, ago. 2000. Título em inglês: Genic and genetic drift effects associated with intrapopulation recurrent selection in the SA3 maize population.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 12. | | PINTO, R. de M. C.; LIMA NETO, F. P.; SOUZA JUNIOR, C. L. de. Estimativa do número apropriado de progênies S1, para a seleção recorrente em milho. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 1, p. 63-73, jan. 2000. Título em inglês: Estimates of the number of S1 progenies for recurrent selection in maize.| Biblioteca(s): Embrapa Unidades Centrais. |
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