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| 10. | | SCHUMPETER, J. A. História da análise economica. Rio de Janeiro : USAID, 1964. il. ; 21 cm Conteúdo: v.1-Introdução, objetivo e método. Dos primórdios a primeira situação clássica. v.2-De 1790 a 1870. v.3-De 1870 a 1914 (e posteriormente) Esboço dos progressos modernos| Biblioteca(s): Biblioteca Rui Tendinha. |
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Trad. de Waltensir Dutra;| Biblioteca(s): Biblioteca Rui Tendinha. |
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Registro Completo |
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Biblioteca(s): |
Biblioteca Rui Tendinha. |
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Data corrente: |
27/09/2017 |
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Data da última atualização: |
12/12/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
BRANDINI, C. B.; ROCHA, J. H. T.; GODINHO, T. de O.; WENZEL, A. V. A.; GONÇALVES, J. L. M. |
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Afiliação: |
ESALQ; Tiago de Oliveira Godinho, Incaper. |
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Título: |
Soil C and Al availability in tropical single and mixed-species of Eucalyptus sp. and Acacia mangium plantations. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Geoderma Regional, v. 10, p. 85-92, 2017. |
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Idioma: |
Inglês |
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Conteúdo: |
The Brazilian forestry sector has expanded to the Cerrado biome regions, where the soils are highly acid, with a high exchangeable Al content and a general nutritional deficiency. Nevertheless, the levels of soil organic matter (SOM) under the forest plantings are generally high and may play an important role in the complexation of Al in the soil solution. The objective of this study was to evaluate the effect of the introduction of Acacia mangium in monospecific Eucalyptus spp. plantations on the soil C content and its effect on the soil Al availability. The study was conducted at four experimental sites in São Paulo and Minas Gerais States in Brazil. We evaluated three treatments: monospecific stands (pure) of Acacia mangium and Eucalyptus and a mixed stand (constituted by Acacia mangium and Eucalyptus in 1:1 proportion), with four replicates at each site. The soil total C and the Al content in the soil solution (Als), the exchangeable Al (Ale) and the organically complexed Al (Al-OM) were determined at the soil depths of 0?5 and 5?10 cm. The introduction of Acacia in Eucalyptus plantations (mixed stand) significantly increased the soil C content by approximately 10% only at one of four sites studied, which was probably because the land was used as pasture before the introduction of the forest plantation and the because of high N input in a Eucalyptus plantation. Despite little improvement in the soil C content and consequently in the Al complexed by the soil organic matter, the introduction of Acacia in the Eucalyptus stands increased the Al availability by approximately 13% due to the reduction in the soil pH. MenosThe Brazilian forestry sector has expanded to the Cerrado biome regions, where the soils are highly acid, with a high exchangeable Al content and a general nutritional deficiency. Nevertheless, the levels of soil organic matter (SOM) under the forest plantings are generally high and may play an important role in the complexation of Al in the soil solution. The objective of this study was to evaluate the effect of the introduction of Acacia mangium in monospecific Eucalyptus spp. plantations on the soil C content and its effect on the soil Al availability. The study was conducted at four experimental sites in São Paulo and Minas Gerais States in Brazil. We evaluated three treatments: monospecific stands (pure) of Acacia mangium and Eucalyptus and a mixed stand (constituted by Acacia mangium and Eucalyptus in 1:1 proportion), with four replicates at each site. The soil total C and the Al content in the soil solution (Als), the exchangeable Al (Ale) and the organically complexed Al (Al-OM) were determined at the soil depths of 0?5 and 5?10 cm. The introduction of Acacia in Eucalyptus plantations (mixed stand) significantly increased the soil C content by approximately 10% only at one of four sites studied, which was probably because the land was used as pasture before the introduction of the forest plantation and the because of high N input in a Eucalyptus plantation. Despite little improvement in the soil C content and consequently in the Al complexed by the soil organic matte... Mostrar Tudo |
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Thesaurus NAL: |
Acacia mangium; Al complexation; Al fractionation; Cerrado biome; Eucalyptus; Forests soils; Soil organic matter. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02400naa a2200253 a 4500
001 1016231
005 2017-12-12
008 2017 bl uuuu u00u1 u #d
100 1 $aBRANDINI, C. B.
245 $aSoil C and Al availability in tropical single and mixed-species of Eucalyptus sp. and Acacia mangium plantations.$h[electronic resource]
260 $c2017
520 $aThe Brazilian forestry sector has expanded to the Cerrado biome regions, where the soils are highly acid, with a high exchangeable Al content and a general nutritional deficiency. Nevertheless, the levels of soil organic matter (SOM) under the forest plantings are generally high and may play an important role in the complexation of Al in the soil solution. The objective of this study was to evaluate the effect of the introduction of Acacia mangium in monospecific Eucalyptus spp. plantations on the soil C content and its effect on the soil Al availability. The study was conducted at four experimental sites in São Paulo and Minas Gerais States in Brazil. We evaluated three treatments: monospecific stands (pure) of Acacia mangium and Eucalyptus and a mixed stand (constituted by Acacia mangium and Eucalyptus in 1:1 proportion), with four replicates at each site. The soil total C and the Al content in the soil solution (Als), the exchangeable Al (Ale) and the organically complexed Al (Al-OM) were determined at the soil depths of 0?5 and 5?10 cm. The introduction of Acacia in Eucalyptus plantations (mixed stand) significantly increased the soil C content by approximately 10% only at one of four sites studied, which was probably because the land was used as pasture before the introduction of the forest plantation and the because of high N input in a Eucalyptus plantation. Despite little improvement in the soil C content and consequently in the Al complexed by the soil organic matter, the introduction of Acacia in the Eucalyptus stands increased the Al availability by approximately 13% due to the reduction in the soil pH.
650 $aAcacia mangium
650 $aAl complexation
650 $aAl fractionation
650 $aCerrado biome
650 $aEucalyptus
650 $aForests soils
650 $aSoil organic matter
700 1 $aROCHA, J. H. T.
700 1 $aGODINHO, T. de O.
700 1 $aWENZEL, A. V. A.
700 1 $aGONÇALVES, J. L. M.
773 $tGeoderma Regional$gv. 10, p. 85-92, 2017.
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