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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
16/07/1999 |
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Data da última atualização: |
16/07/1999 |
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Autoria: |
ZECH, W.; AMELUNG, W.; NEUFELDT, H. |
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Título: |
Organic matter in termite mounds of the Brazilian cerrados. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
In: THOMAS, R.; AYARZA, M.A., ed. Sustainable land management for the oxisols of the Latin American savannas: dynamics of soil organic matter and indicators of soil quality. Cali: CIAT, 1999. |
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Páginas: |
p.198-202. |
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Idioma: |
Inglês |
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Conteúdo: |
This study assessed differences between soil organic matter (SOM) in termite mounds and that of surrounding clayey and loamy Oxisols in the Brazilian savannas, also known as the Cerrados. Samples were fractionated into clay (<2 um), silt (2-50 um), and sand (50-250 um), and the fractions' SOM was characterized according to C, N, lignin, and carbohydrates. In the mounds, soil organic carbon (SOC) is enriched by a factor of 3.5 and 11.5 in the clayey and loamy Oxisols, respectively. Especially in the sand fraction, the SOC accumulated as particulate SOM. However, in all size fractions, we found higher lignin contents, lower ratios of acids to aldehydes of lignin-derived phenols, and lower ratios of microbial to plant-derived monosugars than in the fractions of the surrounding soil. These findings suggest that the SOM of the mounds is less decomposed. |
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Thesagro: |
Carboidrato; Cerrado; Cupim; Matéria Orgânica; Oxisol; Solo; Termitidae. |
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Thesaurus Nal: |
carbohydrates; Ferralsols; organic matter; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01704naa a2200289 a 4500
001 1545412
005 1999-07-16
008 1999 bl uuuu u00u1 u #d
100 1 $aZECH, W.
245 $aOrganic matter in termite mounds of the Brazilian cerrados.
260 $c1999
300 $ap.198-202.
520 $aThis study assessed differences between soil organic matter (SOM) in termite mounds and that of surrounding clayey and loamy Oxisols in the Brazilian savannas, also known as the Cerrados. Samples were fractionated into clay (<2 um), silt (2-50 um), and sand (50-250 um), and the fractions' SOM was characterized according to C, N, lignin, and carbohydrates. In the mounds, soil organic carbon (SOC) is enriched by a factor of 3.5 and 11.5 in the clayey and loamy Oxisols, respectively. Especially in the sand fraction, the SOC accumulated as particulate SOM. However, in all size fractions, we found higher lignin contents, lower ratios of acids to aldehydes of lignin-derived phenols, and lower ratios of microbial to plant-derived monosugars than in the fractions of the surrounding soil. These findings suggest that the SOM of the mounds is less decomposed.
650 $acarbohydrates
650 $aFerralsols
650 $aorganic matter
650 $asoil
650 $aCarboidrato
650 $aCerrado
650 $aCupim
650 $aMatéria Orgânica
650 $aOxisol
650 $aSolo
650 $aTermitidae
700 1 $aAMELUNG, W.
700 1 $aNEUFELDT, H.
773 $tIn: THOMAS, R.; AYARZA, M.A., ed. Sustainable land management for the oxisols of the Latin American savannas: dynamics of soil organic matter and indicators of soil quality. Cali: CIAT, 1999.
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Registro original: |
Embrapa Cerrados (CPAC) |
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| Registros recuperados : 86 | |
| 4. |  | STEINER, C.; GARCIA, M.; ZECH, W. Effects of charcoal as slow release nutrient carrier on N-P-K dynamics and soil microbial population: pot experiments with Ferralsol substrate. In: WOODS, W. I.; TEIXEIRA, W. G.; LEHMANN, J.; STEINER, C.; WINKLERPRINS, A.; REBELLATO, L. (Ed.). Amazonian dark earths: Wim Sombroek's vision. Berlin: Springer, 2009. p. 325-338.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
|    |
| 5. | | STEINER, C.; TEIXEIRA, W. G.; ZECH, W. The effect of charcoal in banana (Musa sp.) planting holes - an on-farm study in Central Amazonia, Brazil. In: WOODS, W. I.; TEIXEIRA, W. G.; LEHMANN, J.; STEINER, C.; WINKLERPRINS, A.; REBELLATO, L. (Ed.). Amazonian dark earths: Wim Sombroek's vision. Berlin: Springer, 2009. p. 423-432.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| 10. | | LEHMANN, J.; CRAVO, M.; ZECH, W. Single tree effects on soil organic matter. In: SHIFT PROJECT ENV 45 (Manaus-AM). Water and nutrient fluxes as indicators for the stability of different land use systems on the terra firme near Manaus. Manaus: EMBRAPA-CPAA : BMBF, 1997. p. 58-66.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
|  |
| 17. | | STEINER, C.; TEIXEIRA, W. G.; WOODS, W. I.; ZECH, W. Indigenous knowledge about Terra Preta formation. In: WOODS, W. I.; TEIXEIRA, W. G.; LEHMANN, J.; STEINER, C.; WINKLERPRINS, A.; REBELLATO, L. (Ed.). Amazonian dark earths: Wim Sombroek's vision. Berlin: Springer, 2009. p. 193-204.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| Registros recuperados : 86 | |
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