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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
02/05/2023 |
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Data da última atualização: |
04/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUSA, J. E. S. de; ANDRADE, G. R. P.; ARAUJO FILHO, J. C. de; SANTOS, J. C. B. dos; CORRÊA, M. M.; FERREIRA, T. O.; CAMARGO, P. B. de; ARAÚJO, J. K. S.; SILVA, A. H. N. da; SOUSA, M. G.; SOUZA JÚNIOR, V. S. de. |
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Afiliação: |
JULIET EMILIA SANTOS DE SOUSA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; GABRIEL RAMATIS PUGLIESE ANDRADE, UNIVERSIDADE ESTADUAL DO NORTE FLUMINENSE; JOSE COELHO DE ARAUJO FILHO, CNPS; JEAN CHEYSON BARROS DOS SANTOS, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; MARCELO METRI CORRÊA, UNIVERSIDADE FEDERAL DO AGRESTE DE PERNAMBUCO; TIAGO OSÓRIO FERREIRA, UNIVERSIDADE DE SÃO PAULO; PLÍNIO BARBOSA DE CAMARGO, UNIVERSIDADE DE SÃO PAULO; JANE KELLY SILVA ARAÚJO, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; ARTUR HENRIQUE NASCIMENTO DA SILVA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; MARILYA GABRYELLA SOUSA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; VALDOMIRO SEVERINO DE SOUZA JÚNIOR, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO. |
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Título: |
Weathering and mineral alteration of metamorphic rocks and genesis of Planosols along a rainfall gradient in Borborema Province, Northeast Brazil. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Geoderma Regional, v. 33, e00642, Jun. 2023. |
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DOI: |
https://doi.org/10.1016/j.geodrs.2023.e00642 |
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Idioma: |
Inglês |
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Conteúdo: |
Soils in Northeast Brazil have a correlation with soils in the Northwest Africa, as Planosols are predominant in these regions. However, the weathering and genesis of these soils are little understood, compromising their use and conservation. The present study aimed to investigate weathering and mineralogical changes as well as genesis of Planosols along a pluviometric gradient, considering their formation from gneiss rocks, and analyze climate influence on soil formation. We collected three profiles in different climatic regions of the Brazilian northeastern region and described and classified the samples morphologically. We also performed the physical, chemical, mineralogical, and micromorphological analyses. The results indicated that external material added to soil surface contributed to the formation of surface horizons rich in coarser fractions. Subsurface horizons however were rich in clay (e.g.: P1-2Bn: 433 g kg-1; P2-2B: 427 g kg-1; P3-2Bn1: 429 g kg-1) and were formed from changes of the parent material and the clay formation in situ. Biotite, plagioclases, K-feldspars, and hornblende are the main primary minerals sources for the formation of clay minerals (mainly smectite and kaolinite) from transformation processes and neoformation. Pedoplasmation, monosiallitization, bisiallitization, redoximorphism, and alkalization contributed to the formation of the Planosols studied. Despite incipient soil evolution, the Planosols displayed variation according to the climatic condition. Nevertheless, the incipient mineral alteration favored important soil attributes that could influence agricultural productivity, even in the region with higher precipitation rates. MenosSoils in Northeast Brazil have a correlation with soils in the Northwest Africa, as Planosols are predominant in these regions. However, the weathering and genesis of these soils are little understood, compromising their use and conservation. The present study aimed to investigate weathering and mineralogical changes as well as genesis of Planosols along a pluviometric gradient, considering their formation from gneiss rocks, and analyze climate influence on soil formation. We collected three profiles in different climatic regions of the Brazilian northeastern region and described and classified the samples morphologically. We also performed the physical, chemical, mineralogical, and micromorphological analyses. The results indicated that external material added to soil surface contributed to the formation of surface horizons rich in coarser fractions. Subsurface horizons however were rich in clay (e.g.: P1-2Bn: 433 g kg-1; P2-2B: 427 g kg-1; P3-2Bn1: 429 g kg-1) and were formed from changes of the parent material and the clay formation in situ. Biotite, plagioclases, K-feldspars, and hornblende are the main primary minerals sources for the formation of clay minerals (mainly smectite and kaolinite) from transformation processes and neoformation. Pedoplasmation, monosiallitization, bisiallitization, redoximorphism, and alkalization contributed to the formation of the Planosols studied. Despite incipient soil evolution, the Planosols displayed variation according to the climati... Mostrar Tudo |
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Palavras-Chave: |
Colluviation; Interstratifications. |
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Thesaurus Nal: |
Clay minerals; Sodic soils. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02669naa a2200301 a 4500
001 2153467
005 2023-12-04
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.geodrs.2023.e00642$2DOI
100 1 $aSOUSA, J. E. S. de
245 $aWeathering and mineral alteration of metamorphic rocks and genesis of Planosols along a rainfall gradient in Borborema Province, Northeast Brazil.$h[electronic resource]
260 $c2023
520 $aSoils in Northeast Brazil have a correlation with soils in the Northwest Africa, as Planosols are predominant in these regions. However, the weathering and genesis of these soils are little understood, compromising their use and conservation. The present study aimed to investigate weathering and mineralogical changes as well as genesis of Planosols along a pluviometric gradient, considering their formation from gneiss rocks, and analyze climate influence on soil formation. We collected three profiles in different climatic regions of the Brazilian northeastern region and described and classified the samples morphologically. We also performed the physical, chemical, mineralogical, and micromorphological analyses. The results indicated that external material added to soil surface contributed to the formation of surface horizons rich in coarser fractions. Subsurface horizons however were rich in clay (e.g.: P1-2Bn: 433 g kg-1; P2-2B: 427 g kg-1; P3-2Bn1: 429 g kg-1) and were formed from changes of the parent material and the clay formation in situ. Biotite, plagioclases, K-feldspars, and hornblende are the main primary minerals sources for the formation of clay minerals (mainly smectite and kaolinite) from transformation processes and neoformation. Pedoplasmation, monosiallitization, bisiallitization, redoximorphism, and alkalization contributed to the formation of the Planosols studied. Despite incipient soil evolution, the Planosols displayed variation according to the climatic condition. Nevertheless, the incipient mineral alteration favored important soil attributes that could influence agricultural productivity, even in the region with higher precipitation rates.
650 $aClay minerals
650 $aSodic soils
653 $aColluviation
653 $aInterstratifications
700 1 $aANDRADE, G. R. P.
700 1 $aARAUJO FILHO, J. C. de
700 1 $aSANTOS, J. C. B. dos
700 1 $aCORRÊA, M. M.
700 1 $aFERREIRA, T. O.
700 1 $aCAMARGO, P. B. de
700 1 $aARAÚJO, J. K. S.
700 1 $aSILVA, A. H. N. da
700 1 $aSOUSA, M. G.
700 1 $aSOUZA JÚNIOR, V. S. de
773 $tGeoderma Regional$gv. 33, e00642, Jun. 2023.
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Registro original: |
Embrapa Solos (CNPS) |
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Classificação |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
11/02/2010 |
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Data da última atualização: |
20/09/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SOUZA, M. O. de; SOUZA, G. da S. e; STAUB, R. B. |
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Afiliação: |
MIRIAN OLIVEIRA DE SOUZA, SGE; GERALDO DA SILVA E SOUZA, SGE; ROBERTA BLASS STAUB, BANCO CENTRAL. |
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Título: |
Influência de variáveis contextuais em medidas não-paramétricas de eficiência: uma aplicação com métodos de reamostragem. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Pesquisa Operacional, v. 29, n. 2, p. 289-302, mai./ago. 2009. |
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Idioma: |
Português |
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Palavras-Chave: |
Bootstrap; DEA; Estimação em dois estágios. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/25296/1/Influenciadevariaveis.pdf
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Marc: |
LEADER 00578naa a2200169 a 4500
001 1657680
005 2011-09-20
008 2009 bl uuuu u00u1 u #d
100 1 $aSOUZA, M. O. de
245 $aInfluência de variáveis contextuais em medidas não-paramétricas de eficiência$buma aplicação com métodos de reamostragem.$h[electronic resource]
260 $c2009
653 $aBootstrap
653 $aDEA
653 $aEstimação em dois estágios
700 1 $aSOUZA, G. da S. e
700 1 $aSTAUB, R. B.
773 $tPesquisa Operacional$gv. 29, n. 2, p. 289-302, mai./ago. 2009.
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