| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrossilvipastoril. Para informações adicionais entre em contato com cpamt.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agrossilvipastoril. |
|
Data corrente: |
07/11/2018 |
|
Data da última atualização: |
07/11/2018 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
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. |
|
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. |
|
Título: |
Salt-affected soils on elevated landforms of an alluvial megafan, northern Pantanal, Brazil. |
|
Ano de publicação: |
2019 |
|
Fonte/Imprenta: |
Catena, v. 172, p. 819-830, 2019. |
|
ISSN: |
0341-8162 |
|
DOI: |
https://doi.org/10.1016/j.catena.2018.09.041 |
|
Idioma: |
Inglês |
|
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 |
|
Palavras-Chave: |
Evaporative concentration of Waters; Quaternary climatic changes; Relict soil carbonates; Solodization; Tropical wetlands. |
|
Thesaurus Nal: |
Sodic soils. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
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.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 82 | |
| 8. |  | DANTAS, B. F.; ARAGÃO, C. A.; CATANEO, A. C.; CAVARIANI, C.; NAKAGAWA, J.; RODRIGUES, J. D. Atividade amilolítica e germinação de sementes de milho submetidas à deficiência de oxigênio. In: CONGRESSO BRASILEIRO DE FISIOLOGIA VEGETAL, 8., 2001, Ilheus. Anais... Ilheus: SBFV, 2001. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
|    |
| 9. | | ARAGÃO, C. A.; DANTAS, B. F.; ALVES, E.; CATANEO, A. C.; CAVARIANI, C.; NAKAGAWA, J. Atividade amilolítica e qualidade fisiológica de sementes armazenadas de milho superdoce tratadas com ácido giberélico. In: CONGRESSO NACIONAL DE MILHO E SORGO, 24., 2002, Florianópolis. Resumos expandidos... Sete Lagoas: ABS; Embrapa Milho e Sorgo; Epagri, 2002. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
| |
| 10. | | ARAGÃO, C. A.; DANTAS, B. F.; ALVES, E.; CATANEO, A. C.; CAVARIANI, C.; NAKAGAWA, J. Atividade amilolítica e qualidade fisiológica de sementes armazenadas de milho super doce tratadas com ácido giberélico. Revista Brasileira de Sementes, v. 25, n. 1, p. 43-48, 2003.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - A |
| Biblioteca(s): Embrapa Semiárido. |
| |
| 11. | | DANTAS, B. F.; ARAGÃO, C. A.; CATANEO, A. C.; CAVARIANI, C.; NAKAGAWA, J.; RODRIGUES, J. D. Atividade amilolítica de sementes das cultivares de milho Saracura (BRS4154) e CATI AL34 submetidas ao alagamento. In: CONGRESSO NACIONAL DE MILHO E SORGO, 24., 2002, Florianópolis. Resumos... Sete Lagoas: ABS; Embrapa Milho e Sorgo; Epagri, 2002. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
| |
| 12. | | RAMOS, A. R. P.; DIAS, R. de C. S.; MENDES, A. M. S.; ARAGÃO, C. A. Associação de diferentes soluções nutritivas com o substrato pó de coco para produção de mudas de meloeiro. Horticultura Brasileira, Brasília, DF, v. 26, n. 2, p. S2522-S2528, 2008. 1 CD-ROM. Suplemento. Edição dos Resumos do 48. Congresso Brasileiro de Olericultura, Maringá, jul. 2008.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Semiárido. |
| |
| 16. | | RAMOS, A. R. P.; DIAS, R. de C. S.; ARAGÃO, C. A. Avaliação de produtividade de melancia de frutos pequenos no submédio do São Francisco, em função da densidade de plantio. Horticultura Brasileira, Brasília, DF, v. 27, n. 2, p. S2189-S2195, ago. 2009. 1 CD-ROM. Suplemento. Edição dos Trabalhos do 49 Congresso Brasileiro de Olericultura, Águas de Lindóia, ago. 2009.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Semiárido. |
| |
| 17. | | AIRES, E. S.; ARAGÃO, C. A.; DANTAS, B. F.; RODRIGUES, J. D.; ONO, E. O. Light intensity modulates the accumulation of carbohydrates, antioxidant enzymes and production of iceberg lettuce under tropical conditions. Horticulturae, v. 7, n. 12, 553, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 5 |
| Biblioteca(s): Embrapa Semiárido. |
|  |
| 19. | | DANTAS, B. F.; FERNANDES, J. G.; RIBEIRO, L. S.; ARAGÃO, C. A. Crescimento inicial de plântulas de melancia após armazenamento e tratamentos de superação de dormência das sementes. Horticultura Brasileira, Brasília, DF, v. 21, n. 2, 2003. 1 CD-ROM. Suplemento. Edição de Resumos expandidos e palestras do 43. Congresso Brasileiro de Olericultura, Recife, jul. 2003.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
| |
| 20. | | MATIAS, J. R.; SILVA, T. C. F. dos S.; ARAGÃO, C. A.; DANTAS, B. F. Estresse salino e hídrico na germinação de sementes de pepino. Horticultura Brasileira, v. 30, n. 2, p. S7765-S7771, jul. 2012. 1 CD-ROM. Suplemento. Edição dos Anais do 52 Congresso Brasileiro de Olericultura, Salvador, jul. 2012.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
| |
| Registros recuperados : 82 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
