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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
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Data corrente: |
05/01/1996 |
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Data da última atualização: |
05/01/1996 |
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Autoria: |
MONTAGNINI, F.; BUSCHBACHER, R. |
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Título: |
Nitrification rates in two undisturbed tropical rain forests and threeslash-and-burn sites of the Venezuela Amazon. |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
Biotropica, v.21, n.1, p.9-14, 1989. |
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Idioma: |
Inglês |
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Conteúdo: |
Nitrification was measured during the rainy season in two undisturbed tropical rain forests and three slash-and-burn sites in the Amazon region of sothwestern Venezuela. Nitrification was higher in the soils of the slash-and-burn sites than in the undisturbed forests. Rates of nitrate production were 14,9 mg/kg/30 days in a forest on an oxisol. 3,5mg/kg/30 days in a forest on Ultisol, 23,2mg/kg/30 days in a 1,5-yr-old slash-and-burn agricultural site on an oxisol, 12,9 mg/kg/30 days in a 0,5-yr-old slash and-burn agricultural site on ultisol, and 12,1 mg/kg/30 days in a 3,0-yr-old pasture on ultisol. In the undisturbed forests, rates of nitrate production in the root mat averaged 93.5mg/kg/3o days on oxisols and 11,2mg/kg/30 days on ultisols. Nitrificationrates closely followed total nitrogen mineralization rates... |
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Palavras-Chave: |
Oxissolos; Tropical rain forest; Ultisol; Ultissolos. |
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Thesagro: |
Corte; Floresta Tropical Úmida; Mineralização; Nitrificação; Oxisol; Queimada. |
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Thesaurus Nal: |
burning; mineralization; nitrification; slash. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01630naa a2200301 a 4500
001 1075599
005 1996-01-05
008 1989 bl --- 0-- u #d
100 1 $aMONTAGNINI, F.
245 $aNitrification rates in two undisturbed tropical rain forests and threeslash-and-burn sites of the Venezuela Amazon.
260 $c1989
520 $aNitrification was measured during the rainy season in two undisturbed tropical rain forests and three slash-and-burn sites in the Amazon region of sothwestern Venezuela. Nitrification was higher in the soils of the slash-and-burn sites than in the undisturbed forests. Rates of nitrate production were 14,9 mg/kg/30 days in a forest on an oxisol. 3,5mg/kg/30 days in a forest on Ultisol, 23,2mg/kg/30 days in a 1,5-yr-old slash-and-burn agricultural site on an oxisol, 12,9 mg/kg/30 days in a 0,5-yr-old slash and-burn agricultural site on ultisol, and 12,1 mg/kg/30 days in a 3,0-yr-old pasture on ultisol. In the undisturbed forests, rates of nitrate production in the root mat averaged 93.5mg/kg/3o days on oxisols and 11,2mg/kg/30 days on ultisols. Nitrificationrates closely followed total nitrogen mineralization rates...
650 $aburning
650 $amineralization
650 $anitrification
650 $aslash
650 $aCorte
650 $aFloresta Tropical Úmida
650 $aMineralização
650 $aNitrificação
650 $aOxisol
650 $aQueimada
653 $aOxissolos
653 $aTropical rain forest
653 $aUltisol
653 $aUltissolos
700 1 $aBUSCHBACHER, R.
773 $tBiotropica$gv.21, n.1, p.9-14, 1989.
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Registro original: |
Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
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| Registros recuperados : 3 | |
| 2. |  | BUSCHBACHER, R.; UHL, C.; SERRÃO, E. A. S. Forest development following pasture use in the North of Para, Brazil. In: SIMPÓSIO DO TRÓPICO ÚMIDO, 1., 1984, Belém, PA. Resumos. Belém, PA: EMBRAPA-CPATU, 1984. p. 409-410. (EMBRAPA-CPATU. Documentos, 31).| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 3. | | BUSCHBACHER, R.; UHL, C.; SERRÃO, E. A. S. Forest development following pasture use in the North of Para, Brazil. In: SIMPÓSIO DO TRÓPICO ÚMIDO, 1., 1984, Belém, PA. Anais. Belém, PA: EMBRAPA-CPATU, 1986. v. 6, p. 113-120. (EMBRAPA-CPATU. Documentos, 36). v.6 Temas multidisciplinares.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| Registros recuperados : 3 | |
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