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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Amazônia Ocidental; Embrapa Pantanal. |
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Data corrente: |
03/04/1995 |
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Data da última atualização: |
04/04/2017 |
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Autoria: |
EDEN, M. J.; FURLEY, P. A.; McGREGOR, D. F. M.; MILLIKEN, W.; RATTER, J. A. |
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Título: |
Effect of forest clearance and burning on soil properties in northern Roraima, Brazil. |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Forest Ecology and Management, v.38, n.3/4, p.283-290, 1991. |
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Idioma: |
Inglês |
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Conteúdo: |
Clearance of evergreen seasonal forest for cattle pasture is examined in an area of northern Roraima. Coloniao (Panicum maximum Jacq.) and kikuyu grass (Brachiaria humidicola (Rendle) Scweik) are commonly established on cleared forest land. Current rates of clearance are rather low as also is grazing intensity (1-2 animals ha-1), but soil physical and chemical changes are occurring. Thus, topsoil bulk density increase over time in new pasture. Also, available nutrients decline from the enhaced levels that prevail after initial clearance and burning. In particular, available P is low in the acid soils and, as elsewhere in Amonia, probably limiting to pasture growth. For local ranchers, the best source of nutrients is the standing forest, so every incentive exist to continue forest destruction for new pasture. |
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Palavras-Chave: |
Clareira; Clearing; Efeito; Effect; Fire; Forest; Properties; Propriedade; Roraima (Brazil). |
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Thesagro: |
Floresta; Fogo; Pastagem; Queimada; Solo. |
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Thesaurus Nal: |
Brazil; burning; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01724naa a2200373 a 4500
001 1784039
005 2017-04-04
008 1991 bl --- 0-- u #d
100 1 $aEDEN, M. J.
245 $aEffect of forest clearance and burning on soil properties in northern Roraima, Brazil.
260 $c1991
520 $aClearance of evergreen seasonal forest for cattle pasture is examined in an area of northern Roraima. Coloniao (Panicum maximum Jacq.) and kikuyu grass (Brachiaria humidicola (Rendle) Scweik) are commonly established on cleared forest land. Current rates of clearance are rather low as also is grazing intensity (1-2 animals ha-1), but soil physical and chemical changes are occurring. Thus, topsoil bulk density increase over time in new pasture. Also, available nutrients decline from the enhaced levels that prevail after initial clearance and burning. In particular, available P is low in the acid soils and, as elsewhere in Amonia, probably limiting to pasture growth. For local ranchers, the best source of nutrients is the standing forest, so every incentive exist to continue forest destruction for new pasture.
650 $aBrazil
650 $aburning
650 $asoil
650 $aFloresta
650 $aFogo
650 $aPastagem
650 $aQueimada
650 $aSolo
653 $aClareira
653 $aClearing
653 $aEfeito
653 $aEffect
653 $aFire
653 $aForest
653 $aProperties
653 $aPropriedade
653 $aRoraima (Brazil)
700 1 $aFURLEY, P. A.
700 1 $aMcGREGOR, D. F. M.
700 1 $aMILLIKEN, W.
700 1 $aRATTER, J. A.
773 $tForest Ecology and Management$gv.38, n.3/4, p.283-290, 1991.
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Registro original: |
Embrapa Pantanal (CPAP) |
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