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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
25/08/1995 |
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Data da última atualização: |
06/04/2017 |
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Autoria: |
ALLEN, S. E. |
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Título: |
Chemical aspects of heather burning. |
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Ano de publicação: |
1964 |
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Fonte/Imprenta: |
Journal Applied Ecology, v.1, p.347-367, 1964. |
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Idioma: |
Inglês |
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Conteúdo: |
Laboratory experiments shown that when heather has been burnt, mineral nutrients, particularly potassium, are readily dissolved from the residual ash. The rate of solution is reduced if combustion is carried out at a higher temeprature. The potential losses throught downward drainage of rain water are decreased because the soil retains nutrient ions from the percolating solution. This effect is most pronounced in organic and clay soils and less so in sandy soils. Losses of dissolved nutrient are possible where surface drainage occurs over impervious soils, althrought such losses may be reduced on wetter moorlands throught adsorption by Sphagmum. Over half the carbon, nitrogen and sulphur in the heather are driven off with the somoke. Most of this is in gaseous form althrought it includes aqueous and tar-like volatile products. Where any loss from the plant-soil complex does occur as a result of burning it seems that precipipation can restore the mineral nutrient balance within a short period except on porous soils. Replacement of nitrogen by rainfall takes longer but microbial action may be of importance in this respect. |
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Palavras-Chave: |
Aspecto quimico; Chemical aspects; Plant. |
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Thesagro: |
Planta; Queimada; Solo. |
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Thesaurus Nal: |
burning; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01645naa a2200217 a 4500
001 1785837
005 2017-04-06
008 1964 bl --- 0-- u #d
100 1 $aALLEN, S. E.
245 $aChemical aspects of heather burning.
260 $c1964
520 $aLaboratory experiments shown that when heather has been burnt, mineral nutrients, particularly potassium, are readily dissolved from the residual ash. The rate of solution is reduced if combustion is carried out at a higher temeprature. The potential losses throught downward drainage of rain water are decreased because the soil retains nutrient ions from the percolating solution. This effect is most pronounced in organic and clay soils and less so in sandy soils. Losses of dissolved nutrient are possible where surface drainage occurs over impervious soils, althrought such losses may be reduced on wetter moorlands throught adsorption by Sphagmum. Over half the carbon, nitrogen and sulphur in the heather are driven off with the somoke. Most of this is in gaseous form althrought it includes aqueous and tar-like volatile products. Where any loss from the plant-soil complex does occur as a result of burning it seems that precipipation can restore the mineral nutrient balance within a short period except on porous soils. Replacement of nitrogen by rainfall takes longer but microbial action may be of importance in this respect.
650 $aburning
650 $asoil
650 $aPlanta
650 $aQueimada
650 $aSolo
653 $aAspecto quimico
653 $aChemical aspects
653 $aPlant
773 $tJournal Applied Ecology$gv.1, p.347-367, 1964.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| Registros recuperados : 6 | |
| 2. |  | MANETA, M.; TORRES, M.; VOSTI, S. A.; WALLENDER, W. W.; ALLEN, S.; BASSOI, L. H.; BENNETT, L.; HOWITT, R.; RODRIGUES, L. N.; YOUNG, J. Assessing agriculture-water links at basin scale: a hydro-economic model of the São Francisco River basin, Brazil. In: WORLD WATER CONGRESS, 13., 2008, Montpellier. Global changes and water resources: confronting the expanding and diversifying pressures. Halfway House: IWRA, 2008. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Semiárido. |
|    |
| 3. | | MANETA, M.; TORRES, M.; VOSTI, S. A.; WALLENDER, W. W.; ALLEN, S.; BASSOI, L. H.; BENNETT, L.; HOWITT, R.; RODRIGUES, L.; YOUNG, J. Assessing agriculture-water links at basin scale: a hydro-economic model of the São Francisco River basin, Brazil. In: WORLD WATER CONGRESS, 13., 2008, Montpellier. Global changes and water resources: confronting the expanding and diversifying pressures. Halfway House: IWRA, 2008. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Cerrados. |
| |
| 4. | | MANETA, M.; TORRES, M.; VOSTI, S. A.; WALLENDER, W. W.; ALLEN, S.; BASSOI, L. H.; BENNETT, L.; HOWITT, R.; RODRIGUES, L. N.; YOUNG, J. Assessing agriculture-water links at the basin scale: hydrologic and economic models of the São Francisco River Basin, Brazil. Water International, London, v. 34, n. 1, p. 88-103, 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Semiárido. |
| |
| 5. | | MANETA, M.; TORRES, M.; VOSTI, S. A.; WALLENDER, W. W.; ALLEN, S.; BASSOI, L. H.; BENNETT, L.; HOWITT, R.; RODRIGUES, L.; YOUNG, J. Assessing agriculture-water links at the basin scale: hydrologic and economic models of the São Francisco River Basin, Brazil. Water International, v. 34, n. 1, p. 88-103, 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Cerrados. |
| |
| 6. | | MANETA, M.; TORRES, M.; WALLENDER, W.; HOWITT, R.; VOSTI, S.; RODRIGUES, L. N.; BASSOI, L. H.; ALLEN, S.; BENNETT, L.; YOUNG, J. Water management across scales in the São Francisco river basin, Brazil: policy options and poverty consequences. In: CGIAR CHALLENGE PROGRAM ON WATER AND FOOD INTERNATIONAL FORUM ON WATER AND FOOD, 2., 2008, Addis Ababa, Ethiopia. Proceedings... [S.l.:s.n.], 2008. v. 1, p. 150-154.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Cerrados. |
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| Registros recuperados : 6 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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