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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: |
07/11/2018 |
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Data da última atualização: |
07/11/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA JUNIOR, J. C.; FURQUIM, S. A. C.; NASCIMENTO, A. F. do; BEIRIGO, R. M.; BARBIERO, L.; VALLES, V.; COUTO, E. G.; VIDAL-TORRADO, P. |
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Afiliação: |
JAIRO C. OLIVEIRA JUNIOR, UFPR; SHEILA A. C. FURQUIM, UNIFESP, DIADEMA; ALEXANDRE FERREIRA DO NASCIMENTO, CPAMT; RAPHAEL M. BEIRIGO, UFPB, AREIA; LAURENT BARBIERO, GÉOSCIENCE ENVIRONNEMENT TOULOUSE, FRANCE; VINCENT VALLES, UNIVERSITÉ D'AVIGNON ET DES PAYS DU VAUCLUSE, AVIGNON; EDUARDO G. COUTO, UFMT, CUIABA; PABLO VIDAL-TORRADO, USP-ESALQ, PIRACICABA. |
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Título: |
Salt-affected soils on elevated landforms of an alluvial megafan, northern Pantanal, Brazil. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Catena, v. 172, p. 819-830, 2019. |
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ISSN: |
0341-8162 |
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DOI: |
https://doi.org/10.1016/j.catena.2018.09.041 |
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Idioma: |
Inglês |
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Conteúdo: |
Salt-affected soils play an important role in the Pantanal wetlands ecosystem, in Brazil, but their occurrence on higher landforms is not well understood. In order to investigate the major processes involved in salt-affected soil formation, a trench was opened in a representative transition between the floodplain and a paleochannel-paleolevee complex not currently reached by floodwater. The trench was 6 meter long and 2 meter deep, and 121 soil samples were collected in a 0.25×0.25m regular grid and submitted for soil (particle-size, pH, exchangeable cations) and solution extract (major cation and anions) analyses. Analytical results were subjected to geostatistical and principal components analyses (PCA). For selected horizons, an undisturbed sample was collected to perform thin sections and micromorphology description. The presence of degraded carbonates in the soils indicated an ancient formation. The regional environmental settings of the alluvial fan and particle size variation along the soil profiles suggested that the sediments of the study site were deposited during the Late Pleistocene and Holocene, in a river channel-levee complex and an abandoned channel by avulsion processes. The depressed topography of the abandoned channel, accompanied by moderately drier climates during early Holocene, likely favored low leaching of salts and higher evapotranspiration, enabling the development of saltaffected soils. Later erosion of the region, which is expected in older lobes of alluvial fans, triggered a relief inversion in the area, preserving the more clayey areas as a slightly higher landform with remaining salt-affected soils. Currently, the seasonal flooding mainly reaches the footslope of this landform, triggering redoximorphic processes, expressed as redox concentrations and depletions, and solodization processes, expressed by lower values of pH, cation exchange capacity (CEC), base saturation and exchangeable sodium percentage (ESP) than at the summit. Thus, the occurrence of salt-affected soils on higher landforms is the reflection of a complex sedimentological history. In this way, the genesis of salt-affected soils on higher landforms, which seems to be poorly understood in many situations worldwide, should be carefully investigated in order to address formation mechanisms, especially in extremely dynamic environments of tropical wetlands. MenosSalt-affected soils play an important role in the Pantanal wetlands ecosystem, in Brazil, but their occurrence on higher landforms is not well understood. In order to investigate the major processes involved in salt-affected soil formation, a trench was opened in a representative transition between the floodplain and a paleochannel-paleolevee complex not currently reached by floodwater. The trench was 6 meter long and 2 meter deep, and 121 soil samples were collected in a 0.25×0.25m regular grid and submitted for soil (particle-size, pH, exchangeable cations) and solution extract (major cation and anions) analyses. Analytical results were subjected to geostatistical and principal components analyses (PCA). For selected horizons, an undisturbed sample was collected to perform thin sections and micromorphology description. The presence of degraded carbonates in the soils indicated an ancient formation. The regional environmental settings of the alluvial fan and particle size variation along the soil profiles suggested that the sediments of the study site were deposited during the Late Pleistocene and Holocene, in a river channel-levee complex and an abandoned channel by avulsion processes. The depressed topography of the abandoned channel, accompanied by moderately drier climates during early Holocene, likely favored low leaching of salts and higher evapotranspiration, enabling the development of saltaffected soils. Later erosion of the region, which is expected in older lobes... Mostrar Tudo |
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Palavras-Chave: |
Evaporative concentration of Waters; Quaternary climatic changes; Relict soil carbonates; Solodization; Tropical wetlands. |
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Thesaurus Nal: |
Sodic soils. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03313naa a2200301 a 4500
001 2098909
005 2018-11-07
008 2019 bl uuuu u00u1 u #d
022 $a0341-8162
024 7 $ahttps://doi.org/10.1016/j.catena.2018.09.041$2DOI
100 1 $aOLIVEIRA JUNIOR, J. C.
245 $aSalt-affected soils on elevated landforms of an alluvial megafan, northern Pantanal, Brazil.$h[electronic resource]
260 $c2019
520 $aSalt-affected soils play an important role in the Pantanal wetlands ecosystem, in Brazil, but their occurrence on higher landforms is not well understood. In order to investigate the major processes involved in salt-affected soil formation, a trench was opened in a representative transition between the floodplain and a paleochannel-paleolevee complex not currently reached by floodwater. The trench was 6 meter long and 2 meter deep, and 121 soil samples were collected in a 0.25×0.25m regular grid and submitted for soil (particle-size, pH, exchangeable cations) and solution extract (major cation and anions) analyses. Analytical results were subjected to geostatistical and principal components analyses (PCA). For selected horizons, an undisturbed sample was collected to perform thin sections and micromorphology description. The presence of degraded carbonates in the soils indicated an ancient formation. The regional environmental settings of the alluvial fan and particle size variation along the soil profiles suggested that the sediments of the study site were deposited during the Late Pleistocene and Holocene, in a river channel-levee complex and an abandoned channel by avulsion processes. The depressed topography of the abandoned channel, accompanied by moderately drier climates during early Holocene, likely favored low leaching of salts and higher evapotranspiration, enabling the development of saltaffected soils. Later erosion of the region, which is expected in older lobes of alluvial fans, triggered a relief inversion in the area, preserving the more clayey areas as a slightly higher landform with remaining salt-affected soils. Currently, the seasonal flooding mainly reaches the footslope of this landform, triggering redoximorphic processes, expressed as redox concentrations and depletions, and solodization processes, expressed by lower values of pH, cation exchange capacity (CEC), base saturation and exchangeable sodium percentage (ESP) than at the summit. Thus, the occurrence of salt-affected soils on higher landforms is the reflection of a complex sedimentological history. In this way, the genesis of salt-affected soils on higher landforms, which seems to be poorly understood in many situations worldwide, should be carefully investigated in order to address formation mechanisms, especially in extremely dynamic environments of tropical wetlands.
650 $aSodic soils
653 $aEvaporative concentration of Waters
653 $aQuaternary climatic changes
653 $aRelict soil carbonates
653 $aSolodization
653 $aTropical wetlands
700 1 $aFURQUIM, S. A. C.
700 1 $aNASCIMENTO, A. F. do
700 1 $aBEIRIGO, R. M.
700 1 $aBARBIERO, L.
700 1 $aVALLES, V.
700 1 $aCOUTO, E. G.
700 1 $aVIDAL-TORRADO, P.
773 $tCatena$gv. 172, p. 819-830, 2019.
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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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| Registros recuperados : 184 | |
| 10. |  | SOUZA, G. K. B.; CRUZ NETO, R.; SOUZA, E. H. de; SOUZA, F. V. D. Manutenção, Enriquecimento e Herborização do Banco de Germoplasma de Bromélias. In: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA, 9., 2015: Cruz das Almas, BA. Pesquisa: para quê? para quem? : resumos. Brasília, DF : Embrapa, 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 11. | | SOARES, T. L.; SOUZA, E. H. de; ROSSI, M. L.; SOUZA, F. V. D. Morfologia e viabilidade de grãos de pólen de acessos silvestres de abacaxi. Ciência Rural, Santa Maria, v. 41, n. 10, p. 1744-1749, out, 2011. 0103-8478| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 12. | | SOUZA, E. H. de; AONA, L. Y. S.; SOUZA, F. V. D.; LEME, E. M. C. Lymania involucrata (Bromeliaceae: Bromelioideae), a new ornamental species from Bahia, Brazil. Phytotaxa, v. 489, n.2, p. 209-215, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 13. | | GUERREIRO, M. S. S.; CARDOSO, C. E. L.; SOUZA, E. H. de; SOUZA, F. V. D. Mercado do abacaxi ornamental: atributos importantes. In: CONGRESSO BRASILEIRO DE FLORICULTURA E PLANTAS ORNAMENTAIS, 17.; CONGRESSO BRASILEIRO DE CULTURA DE TECIDOS DE PLANTAS, 4.; 2009, Aracaju. Ciência, inovação e sustentabilidade: [anais...]. Aracaju: Embrapa Tabuleiros Costeiros; Cruz das Almas: Embrapa Mandioca e Fruticultura Tropical, 2009. 1 CD-ROM. (Embrapa Tabuleiros Costeiros. Documentos, 150). Organizadores: Ana da Silva Lédo; Fernanda Vidigal D. Souza; Vivian Loges; Everton Hilo de Souza; Ana Cecília R. de Castro.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 15. | | DIAS, L. E. da C.; LIMA, O. S.; SOUZA, E. H. de; SOUZA, F. V. D. Ensaios de DHE (Distinguibilidade, Homogeneidade e Estabilidade) para fins de registro e proteção de cultivares de híbridos de abacaxi ornamental. In: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA, 10., 2016: Cruz das Almas, BA. Traduzindo ciência para o mundo : resumos. Brasília, DF : Embrapa, 2016.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 17. | | MACHADO, C. de F.; SOUZA, F. V. D.; CABRAL, J. R. S.; SOUZA, E. H. de. Estado da arte do Banco Ativo de Germoplasma de abacaxi da Embrapa Mandioca e Fruticultura Tropical. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 5., 2009, Guarapari, ES. O melhoramento e os novos cenários da agricultura: anais. Vitória: SBMP: Incaper, 2009. 1 CD-ROM. (Incaper. Documentos, 11). 4 p. pdf 2012.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 19. | | SOUZA, F. V. D.; ROSA, S. S.; SOUZA, E. H. de; SOUZA, A. da S. Coleta de Bromeliaceae com potencial ornamental. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS; WORKSHOP EM BIOPROSPECÇÃO E CONSERVAÇÃO DE PLANTAS NATIVAS DO SEMI-ÁRIDO, 3.; WORKSHOP INTERNACIONAL SOBRE BIOENERGIA E MEIO AMBIENTE, 2010, Salvador. Bancos de germoplasma: descobrir a riqueza, garantir o futuro: anais. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2010. 1 CD-ROM (Embrapa Recursos Genéticos e Biotecnologia. Documentos, 304). PDF 232.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| Registros recuperados : 184 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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