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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
22/11/2002 |
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Data da última atualização: |
22/11/2002 |
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Autoria: |
SALDARRIAGA, J. G.; UHL, C. |
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Título: |
Recovery of forest vegetation following slash-and-burn agriculture in the Upper Rio Negro |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
In: GOMEZ-POMPA, A.; WHITMORE, T.C.; HADLEY, M. Rain forest regeneration and management. Paris: UNESCO/Parthenon Publishing, 1991. (Man and the biophere series, v.6). |
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Páginas: |
p.303-312 |
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Idioma: |
Inglês |
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Conteúdo: |
Changes in species composition, forest structure and biomass have been studied at 24 tropical forest sites along the Upper Rio Negro region of Colombia and Venezuela. Stands were selected from the tierra firme forests (non-flooded) to represent a chronosequence of succession following slash-and-burn agricultural practices. After abandonment, the number of species increases from early successional to mature forests. The speciescomposition of the mature forests depends on a small fraction of primary species that survive from early stages of succession and on the introduction of many primary species at later stages of succession. Small areas disturbed by slash-and-burn agriculture recover their original species composition, but the time required varies, dependingon the intensity and frequency of disturbance in the area. On a large scale, the forest is a mosaic of different aged patches and structural characteristics, with high variability among stands, depending on soils, micro-relief, species composition, and disturbance dynamics. Approximately 140-200 years is required for an abandoned farm to attain the biomass values comparable to those of a mature forest. Recovery is thus five to seven times longer in the Upper Rio Negro than in other tropical areas in South America. |
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Thesagro: |
Conservação; Ecologia; Floresta Tropical; Manejo; Silvicultura. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01964naa a2200205 a 4500
001 1327859
005 2002-11-22
008 1991 bl uuuu u00u1 u #d
100 1 $aSALDARRIAGA, J. G.
245 $aRecovery of forest vegetation following slash-and-burn agriculture in the Upper Rio Negro
260 $c1991
300 $ap.303-312
520 $aChanges in species composition, forest structure and biomass have been studied at 24 tropical forest sites along the Upper Rio Negro region of Colombia and Venezuela. Stands were selected from the tierra firme forests (non-flooded) to represent a chronosequence of succession following slash-and-burn agricultural practices. After abandonment, the number of species increases from early successional to mature forests. The speciescomposition of the mature forests depends on a small fraction of primary species that survive from early stages of succession and on the introduction of many primary species at later stages of succession. Small areas disturbed by slash-and-burn agriculture recover their original species composition, but the time required varies, dependingon the intensity and frequency of disturbance in the area. On a large scale, the forest is a mosaic of different aged patches and structural characteristics, with high variability among stands, depending on soils, micro-relief, species composition, and disturbance dynamics. Approximately 140-200 years is required for an abandoned farm to attain the biomass values comparable to those of a mature forest. Recovery is thus five to seven times longer in the Upper Rio Negro than in other tropical areas in South America.
650 $aConservação
650 $aEcologia
650 $aFloresta Tropical
650 $aManejo
650 $aSilvicultura
700 1 $aUHL, C.
773 $tIn: GOMEZ-POMPA, A.; WHITMORE, T.C.; HADLEY, M. Rain forest regeneration and management. Paris: UNESCO/Parthenon Publishing, 1991. (Man and the biophere series$gv.6).
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| 3. |  | BRINATTI, A. M.; MASCARENHAS, Y. P.; PEREIRA, V. P.; PARTITI, C. S. de M.; MACEDO, A. Mineralogical characterization of a highly-weathered soil by the rietveld method. Scientia Agricola, Piracicaba, v. 67, n. 4, p. 454-464, 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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