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Registro Completo |
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Biblioteca(s): |
Embrapa Agroindústria Tropical; Embrapa Meio Norte / UEP-Parnaíba; Embrapa Tabuleiros Costeiros. |
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Data corrente: |
08/10/1997 |
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Data da última atualização: |
12/01/2005 |
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Autoria: |
OLIVEIRA, L. B. de. |
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Título: |
O Estudo fisico do solo e a aplicacao racional de tecnicas conservacionistas |
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Ano de publicação: |
1967 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, v. 2, p. 281-285, 1967. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
O autor apresenta a caracterizacao analitica de camadas adensadas exitentes, em solos de "Tabuleiros" da regiao Norte (litoral) do Estado de Pernambuco, solos estes desenvolvidos sobre o material originado da Serie Barreiras. Foram estudados cinco perfis de solo, snedo dois localizados nas Estacoes Experimentais do Curado (Recife) e Itaperema (Goiania) do Instituto de Pesquisas e Experimentacao Agropecuarias do Nordeste, um no Engenho Mussurepe (Paudalho) e dois no Engenho D'agua (Igaracu). Os estudos foram conduzidos em amostras de solo coletadas com estrutura indeformada, na camada superficial e naquelas que apresentavam adensamento, como auxilio do extrator de solos de Uhland (1949). A caracterizacao analitica foi feita das determinacoes do coeficientede permeabilidade, da porosidade total e da macro e micro porosidade. O autor conclui por recomendar especial atencao dos responsaveis pelo manuseio desses solos, quanto a necessidade de destruir essas camadas adensadas, por meio de subsolagem, o que proporciona maior acumulo de agua no perfil do solo, maior penetracao das raizes em profundidade, menores possibilidades de erosao pelo "run-off" e lixiviacao, e consequentemente, melhores condicoes para um aumento da produtividade desses solos. |
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Palavras-Chave: |
Coastal tabbelands; Compactacao; Compactation; Degradacao; Goiana; Itapireme; Management; Pernambuco; Physical property; Propiedade fisica; Recife; Soils; Solos; Tablelands; Tabuleiros; Tabuleiros Costeiros. |
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Thesagro: |
Conservação; Manejo; Solo. |
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Thesaurus Nal: |
degradation; soil; soil conservation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02228naa a2200385 a 4500
001 1424539
005 2005-01-12
008 1967 bl --- 0-- u #d
100 1 $aOLIVEIRA, L. B. de
245 $aO Estudo fisico do solo e a aplicacao racional de tecnicas conservacionistas
260 $c1967
520 $aO autor apresenta a caracterizacao analitica de camadas adensadas exitentes, em solos de "Tabuleiros" da regiao Norte (litoral) do Estado de Pernambuco, solos estes desenvolvidos sobre o material originado da Serie Barreiras. Foram estudados cinco perfis de solo, snedo dois localizados nas Estacoes Experimentais do Curado (Recife) e Itaperema (Goiania) do Instituto de Pesquisas e Experimentacao Agropecuarias do Nordeste, um no Engenho Mussurepe (Paudalho) e dois no Engenho D'agua (Igaracu). Os estudos foram conduzidos em amostras de solo coletadas com estrutura indeformada, na camada superficial e naquelas que apresentavam adensamento, como auxilio do extrator de solos de Uhland (1949). A caracterizacao analitica foi feita das determinacoes do coeficientede permeabilidade, da porosidade total e da macro e micro porosidade. O autor conclui por recomendar especial atencao dos responsaveis pelo manuseio desses solos, quanto a necessidade de destruir essas camadas adensadas, por meio de subsolagem, o que proporciona maior acumulo de agua no perfil do solo, maior penetracao das raizes em profundidade, menores possibilidades de erosao pelo "run-off" e lixiviacao, e consequentemente, melhores condicoes para um aumento da produtividade desses solos.
650 $adegradation
650 $asoil
650 $asoil conservation
650 $aConservação
650 $aManejo
650 $aSolo
653 $aCoastal tabbelands
653 $aCompactacao
653 $aCompactation
653 $aDegradacao
653 $aGoiana
653 $aItapireme
653 $aManagement
653 $aPernambuco
653 $aPhysical property
653 $aPropiedade fisica
653 $aRecife
653 $aSoils
653 $aSolos
653 $aTablelands
653 $aTabuleiros
653 $aTabuleiros Costeiros
773 $tPesquisa Agropecuaria Brasileira$gv. 2, p. 281-285, 1967.
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Registro original: |
Embrapa Agroindústria Tropical (CNPAT) |
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Classificação |
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Registro |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental; Embrapa Amazônia Oriental; Embrapa Rondônia; Embrapa Roraima. |
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Data corrente: |
17/03/2022 |
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Data da última atualização: |
04/07/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SILVA JÚNIOR, E. C. da; WADT, L. H. de O.; SILVA, K. E. da; LIMA, R. M. B. de; BATISTA, K. D.; GUEDES, M. C.; OLIVEIRA JUNIOR, R. C. de; REIS, A. R. dos; LOPES, G.; BROADLEY, M. R.; YOUNG, S. D.; GUILHERME, L. R. G. |
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Afiliação: |
LUCIA HELENA DE OLIVEIRA WADT, CPAF-RO; KATIA EMIDIO DA SILVA, CPAA; KARINE DIAS BATISTA, CPAF-RR; MARCELINO CARNEIRO GUEDES, CPAF-AP; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU. |
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Título: |
Geochemistry of selenium, barium, and iodine in representative soils of the Brazilian Amazon rainforest. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Science of The Total Environment, v. 828, 154426, July 2022. |
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DOI: |
https://doi.org/10.1016/j.scitotenv.2022.154426 |
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Idioma: |
Inglês |
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Conteúdo: |
The Amazon rainforest is a heterogeneous ecosystem and its soils exhibit geographically variable concentrations of trace elements. In this region, anthropic activities - e.g., agriculture and mining - are numerous and varied, and even natural areas are at risk of contamination by trace elements, either of geogenic or anthropogenic origin. A reliable dataset of benchmark values for selenium (Se), barium (Ba), and iodine (I) concentrations in soils is needed for use as a reference in research and public policies in the region. In this study, 9 selected sites in the Brazilian Amazon rainforest within areas represented by Oxisols and Ultisols were assessed for relevant soil physicochemical characteristics, along with the concentrations of total Se (SeTot), total Ba (BaTot), and sequentially-extracted soluble Se (SeSol) and adsorbed Se (SeAd) in 3 different soil layers (0?20, 20?40, and 40?60 cm). In addition, organically bound-Se (SeOrg) and total I (ITot) concentrations in the surface layer (0?20 cm) were measured. Soil Se concentrations (SeTot) were considered safe and are likely a result of contributions of sedimentary deposits from the Andes. Available Se (SeSol + SeAd) accounted for 4.5% of SeTot, on average, while SeOrg in the topsoil accounted for more than 50% of SeTot. Barium in the western Amazon (state of Acre) and central Amazon (Anori, state of Amazonas) exceeded national prevention levels (PVs). Furthermore, the average ITot in the studied topsoils (5.4 mg kg−1) surpassed the worldwide mean. Notwithstanding, the close relationship found between the total content of the elements (Se, Ba, and I) and soil texture (clay, silt, and sand) suggests their geogenic source. Finally, our data regarding SeTot, BaTot, and ITot can be used to derive regional quality reference values for Amazon soils and also for updating prevention (PV) and investigation (IV) values established for selected elements by the Brazilian legislation. MenosThe Amazon rainforest is a heterogeneous ecosystem and its soils exhibit geographically variable concentrations of trace elements. In this region, anthropic activities - e.g., agriculture and mining - are numerous and varied, and even natural areas are at risk of contamination by trace elements, either of geogenic or anthropogenic origin. A reliable dataset of benchmark values for selenium (Se), barium (Ba), and iodine (I) concentrations in soils is needed for use as a reference in research and public policies in the region. In this study, 9 selected sites in the Brazilian Amazon rainforest within areas represented by Oxisols and Ultisols were assessed for relevant soil physicochemical characteristics, along with the concentrations of total Se (SeTot), total Ba (BaTot), and sequentially-extracted soluble Se (SeSol) and adsorbed Se (SeAd) in 3 different soil layers (0?20, 20?40, and 40?60 cm). In addition, organically bound-Se (SeOrg) and total I (ITot) concentrations in the surface layer (0?20 cm) were measured. Soil Se concentrations (SeTot) were considered safe and are likely a result of contributions of sedimentary deposits from the Andes. Available Se (SeSol + SeAd) accounted for 4.5% of SeTot, on average, while SeOrg in the topsoil accounted for more than 50% of SeTot. Barium in the western Amazon (state of Acre) and central Amazon (Anori, state of Amazonas) exceeded national prevention levels (PVs). Furthermore, the average ITot in the studied topsoils (5.4 mg kg−... Mostrar Tudo |
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Palavras-Chave: |
Amazon soils; Availability; Geogenic; Quality reference values; Total concentration. |
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Thesagro: |
Solo. |
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Thesaurus NAL: |
Trace elements. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/232614/1/1-s2.0-S0048969722015194-main.pdf
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Marc: |
LEADER 03024naa a2200349 a 4500
001 2140996
005 2022-07-04
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.scitotenv.2022.154426$2DOI
100 1 $aSILVA JÚNIOR, E. C. da
245 $aGeochemistry of selenium, barium, and iodine in representative soils of the Brazilian Amazon rainforest.$h[electronic resource]
260 $c2022
520 $aThe Amazon rainforest is a heterogeneous ecosystem and its soils exhibit geographically variable concentrations of trace elements. In this region, anthropic activities - e.g., agriculture and mining - are numerous and varied, and even natural areas are at risk of contamination by trace elements, either of geogenic or anthropogenic origin. A reliable dataset of benchmark values for selenium (Se), barium (Ba), and iodine (I) concentrations in soils is needed for use as a reference in research and public policies in the region. In this study, 9 selected sites in the Brazilian Amazon rainforest within areas represented by Oxisols and Ultisols were assessed for relevant soil physicochemical characteristics, along with the concentrations of total Se (SeTot), total Ba (BaTot), and sequentially-extracted soluble Se (SeSol) and adsorbed Se (SeAd) in 3 different soil layers (0?20, 20?40, and 40?60 cm). In addition, organically bound-Se (SeOrg) and total I (ITot) concentrations in the surface layer (0?20 cm) were measured. Soil Se concentrations (SeTot) were considered safe and are likely a result of contributions of sedimentary deposits from the Andes. Available Se (SeSol + SeAd) accounted for 4.5% of SeTot, on average, while SeOrg in the topsoil accounted for more than 50% of SeTot. Barium in the western Amazon (state of Acre) and central Amazon (Anori, state of Amazonas) exceeded national prevention levels (PVs). Furthermore, the average ITot in the studied topsoils (5.4 mg kg−1) surpassed the worldwide mean. Notwithstanding, the close relationship found between the total content of the elements (Se, Ba, and I) and soil texture (clay, silt, and sand) suggests their geogenic source. Finally, our data regarding SeTot, BaTot, and ITot can be used to derive regional quality reference values for Amazon soils and also for updating prevention (PV) and investigation (IV) values established for selected elements by the Brazilian legislation.
650 $aTrace elements
650 $aSolo
653 $aAmazon soils
653 $aAvailability
653 $aGeogenic
653 $aQuality reference values
653 $aTotal concentration
700 1 $aWADT, L. H. de O.
700 1 $aSILVA, K. E. da
700 1 $aLIMA, R. M. B. de
700 1 $aBATISTA, K. D.
700 1 $aGUEDES, M. C.
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aREIS, A. R. dos
700 1 $aLOPES, G.
700 1 $aBROADLEY, M. R.
700 1 $aYOUNG, S. D.
700 1 $aGUILHERME, L. R. G.
773 $tScience of The Total Environment$gv. 828, 154426, July 2022.
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Registro original: |
Embrapa Rondônia (CPAF-RO) |
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