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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
05/03/1998 |
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Data da última atualização: |
05/03/1998 |
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Autoria: |
NEPSTAD, D. C.; KLINK, C. A.; UHL, C.; VIEIRA, I. C.; LEFEBVRE, P.; PEDLOWSKI, M.; MATRICARDI, E.; NEGREIROS, G.; BROWN, I. F.; AMARAL, E.; HOMMA, A.; WALKER, R. |
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Título: |
Land-use in Amazonia and the cerrado of Brasil. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Ciencia e Cultura, Sao Paulo, v.49, n.1/2, p.73-86, 1997. |
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Idioma: |
Inglês |
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Conteúdo: |
The total area and annual rate of native vegetation clearing is greatest in the Cerrado region followed by the Brazilian states of Para, Mato Grosso, Maranhao and Rondonia. Amazonian forest clearing proceeds most quickly where abundant natural resources (wood or land) are accessible by roads and close to markets. These regions are concentrated along the eastern and southern flanks of Amazonia, particularly in eastern Para, Cuiaba and Rondonia. There are still large discrepancies in estimates of annual deforestation; Landsat (Thematic Mapper-based) mapping of deforestation in the closed-canopy forests of Amazonia has not include non-Brazilian countries and is incomplete for the cerrado biome. Amazonian deforestation was last mapped 1994. Current estimates of Amazonian forest clearing do not include most of the forests that are affected by logging each year, which is an area (about 7,000 km2 yr-1)more than half the size of the area of annual deforestation. Logging changes forest structure and increases forest flammability. The intensity of logging ranges from 1-to 100-species harvest, and averages 20m3 of wood harvested per hectare. Logging may increase dramatically in the coming years. Fire affects large, but difficult to measure, areas of pastureland, logged forests, secondary forests and primary forests. Forest ground fires are particularly difficult to map fom satellite data. Fire is more frequent where forest clearing is taking place, and where seasonal drought is most severe. The destiny of Amazonian forest land cleared for crops and cattle pasture is complex, and highly variables regionally. Areal estimates are needed for managed pasture, degraded pasture, cropland and secondadry forests, for these ecosystems are functionally distinct. Most forest clearing is for pasture establishment, followed by shifting cultivation. Cattle pasture is the logical land-use for both small-scale and large-scale rural Amazonians because cattle are easily sold or traded, and they maintain their value during inflation. Cattle patures help secure land claims and increase land value. In the Cerrado, there has been a shift from extensive cattle grazing of natural savannas to pasture planted with African forage grasses; mechanized soy bean production is the second most extensive land-use. Pastures are the most important land-cover for the LBA (Large-Scale Biosphere - Atmosphere experiment in Amazonia) science campaign. Brazilian Amazonia experiences reduced rainfall during ENSO events. ENSO-related drought is most severe in eastern Amazonia. A basin-wide reduction in rainfall would have its greatest affect on vegetation near the border between savanna and closed-canopy forest in Rondonia, Mato Grosso, Para and Tocantins. The LBA campaign should be conducted in variety of rural landscapes to capture the multiplicity of human effects on native ecosystems, as well as the range of cliamatic and edaphic conditions under which these ecosystems have evolved. It should address the current (ENSO) and predicted variations in climate, and should be designed to recommend those land-uses that best reconcile the maintenance of ecosystem processes with socially equitable economic growth. MenosThe total area and annual rate of native vegetation clearing is greatest in the Cerrado region followed by the Brazilian states of Para, Mato Grosso, Maranhao and Rondonia. Amazonian forest clearing proceeds most quickly where abundant natural resources (wood or land) are accessible by roads and close to markets. These regions are concentrated along the eastern and southern flanks of Amazonia, particularly in eastern Para, Cuiaba and Rondonia. There are still large discrepancies in estimates of annual deforestation; Landsat (Thematic Mapper-based) mapping of deforestation in the closed-canopy forests of Amazonia has not include non-Brazilian countries and is incomplete for the cerrado biome. Amazonian deforestation was last mapped 1994. Current estimates of Amazonian forest clearing do not include most of the forests that are affected by logging each year, which is an area (about 7,000 km2 yr-1)more than half the size of the area of annual deforestation. Logging changes forest structure and increases forest flammability. The intensity of logging ranges from 1-to 100-species harvest, and averages 20m3 of wood harvested per hectare. Logging may increase dramatically in the coming years. Fire affects large, but difficult to measure, areas of pastureland, logged forests, secondary forests and primary forests. Forest ground fires are particularly difficult to map fom satellite data. Fire is more frequent where forest clearing is taking place, and where seasonal drought is most se... Mostrar Tudo |
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Palavras-Chave: |
Brasil; Enviromental impact. |
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Thesagro: |
Cerrado; Impacto Ambiental; Uso da Terra. |
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Thesaurus Nal: |
Amazonia; Brazil; land use. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 04071naa a2200349 a 4500
001 1554072
005 1998-03-05
008 1997 bl --- 0-- u #d
100 1 $aNEPSTAD, D. C.
245 $aLand-use in Amazonia and the cerrado of Brasil.
260 $c1997
520 $aThe total area and annual rate of native vegetation clearing is greatest in the Cerrado region followed by the Brazilian states of Para, Mato Grosso, Maranhao and Rondonia. Amazonian forest clearing proceeds most quickly where abundant natural resources (wood or land) are accessible by roads and close to markets. These regions are concentrated along the eastern and southern flanks of Amazonia, particularly in eastern Para, Cuiaba and Rondonia. There are still large discrepancies in estimates of annual deforestation; Landsat (Thematic Mapper-based) mapping of deforestation in the closed-canopy forests of Amazonia has not include non-Brazilian countries and is incomplete for the cerrado biome. Amazonian deforestation was last mapped 1994. Current estimates of Amazonian forest clearing do not include most of the forests that are affected by logging each year, which is an area (about 7,000 km2 yr-1)more than half the size of the area of annual deforestation. Logging changes forest structure and increases forest flammability. The intensity of logging ranges from 1-to 100-species harvest, and averages 20m3 of wood harvested per hectare. Logging may increase dramatically in the coming years. Fire affects large, but difficult to measure, areas of pastureland, logged forests, secondary forests and primary forests. Forest ground fires are particularly difficult to map fom satellite data. Fire is more frequent where forest clearing is taking place, and where seasonal drought is most severe. The destiny of Amazonian forest land cleared for crops and cattle pasture is complex, and highly variables regionally. Areal estimates are needed for managed pasture, degraded pasture, cropland and secondadry forests, for these ecosystems are functionally distinct. Most forest clearing is for pasture establishment, followed by shifting cultivation. Cattle pasture is the logical land-use for both small-scale and large-scale rural Amazonians because cattle are easily sold or traded, and they maintain their value during inflation. Cattle patures help secure land claims and increase land value. In the Cerrado, there has been a shift from extensive cattle grazing of natural savannas to pasture planted with African forage grasses; mechanized soy bean production is the second most extensive land-use. Pastures are the most important land-cover for the LBA (Large-Scale Biosphere - Atmosphere experiment in Amazonia) science campaign. Brazilian Amazonia experiences reduced rainfall during ENSO events. ENSO-related drought is most severe in eastern Amazonia. A basin-wide reduction in rainfall would have its greatest affect on vegetation near the border between savanna and closed-canopy forest in Rondonia, Mato Grosso, Para and Tocantins. The LBA campaign should be conducted in variety of rural landscapes to capture the multiplicity of human effects on native ecosystems, as well as the range of cliamatic and edaphic conditions under which these ecosystems have evolved. It should address the current (ENSO) and predicted variations in climate, and should be designed to recommend those land-uses that best reconcile the maintenance of ecosystem processes with socially equitable economic growth.
650 $aAmazonia
650 $aBrazil
650 $aland use
650 $aCerrado
650 $aImpacto Ambiental
650 $aUso da Terra
653 $aBrasil
653 $aEnviromental impact
700 1 $aKLINK, C. A.
700 1 $aUHL, C.
700 1 $aVIEIRA, I. C.
700 1 $aLEFEBVRE, P.
700 1 $aPEDLOWSKI, M.
700 1 $aMATRICARDI, E.
700 1 $aNEGREIROS, G.
700 1 $aBROWN, I. F.
700 1 $aAMARAL, E.
700 1 $aHOMMA, A.
700 1 $aWALKER, R.
773 $tCiencia e Cultura, Sao Paulo$gv.49, n.1/2, p.73-86, 1997.
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Registro original: |
Embrapa Cerrados (CPAC) |
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| Registros recuperados : 30 | |
| 9. |  | VIEIRA, A. D. S.; SILVA, L. M. F.; AGUIAR, L. F.; MONTE, A. I. S.; SANTOS, K. M. O. dos. Determinação de Staphylococcus aureus em queijos tipo coalho não maturados comercializados na cidade de Sobral, CE. In: ENCONTRO NACIONAL, 16.; CONGRESSO LATINO-AMERICANO DE ANALISTAS DE ALIMENTOS, 2., 2009, Belo Horizonte. Alimento seguro: desafios da intersetorialidade. São Paulo: SBAAL, 2009. 1 CD-ROM. ENNAL.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 12. | | VIEIRA, A. D. S.; SANTOS, K. M. O. dos; PAIVA, D. O.; BOMFIM, M. A. D.; SILVA, L. M. F. Elaboração de queijo de coalho probiótico com leite de cabras em dieta para aumento do teor de ácido linoléico conjugado. In: CONGRESSO DE PESQUISA E INOVAÇÃO DA REDE NORTE NORDESTE DE EDUCAÇÃO TECNOLÓGICA, 4., 2009, Belém, PA. Anais... Belém: Instituto Federal do Pará, 2009. 8 f. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 13. | | BARCELOS, S. C. de; MORAES, G. M. D.; SILVA, L. M. F. da; SALLES, H. O.; EGITO, A. S. do. Utilização de extrato aquoso das sementes de gergelim como substrato para o crescimento de bactérias lácteas probióticas. In: CONGRESSO BRASILEIRO DE MAMONA, 6.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 3., 2014, Fortaleza. Energia e segurança alimentar na agricultura familiar: anais. Campina Grande, PB: Embrapa Algodão, 2014. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 14. | | MORAES, G. D. de; DUARTE, T. F.; SILVA, L. M. F. da; SALLES, H. O.; EGITO, A. S. do; SANTOS, K. M. O. dos. Atividade proteolítica de cepas de Lactobacillus mucosae isoladas de leite de cabra. In: SIMPÓSIO LATINO-AMERICANO DE BIOTECNOLOGIA DO NORDESTE, 1., 2013, Parnaíba. [Resumos...]. Parnaíba: UFPI; BIOTEC; CONICET, 2013. Poster P16.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 15. | | FERNANDES, D. R.; COSTA, V. M. D.; SILVA, L. M. F. da; LIMA, A. R.; PINHEIRO, R. R.; SOUZA, V. de. Comparação entre o método de contagem eletrônica e contagem microscópica na enumeração de células somáticas presentes em leite de cabra. In: CONGRESSO BRASILEIRO DE QUALIDADE DO LEITE, 6., 2015, Curitiba. Anais... Curitiba: CBQL, 2015. Resumo 43. p. 85-86.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 16. | | VIEIRA, A. D. S.; BURITI, F. C. A.; SILVA, L. M. F. da; EGITO, A. S. do; SANTOS, K. M. O. dos. Características físico-químicas e avaliação sensorial de queijo minas frescal caprino potencialmente probiótico. In: SIMPÓSIO INTERNACIONAL SOBRE CAPRINOS E OVINOS DE CORTE, 4.; FEIRA NACIONAL DO AGRONEGÓCIO DA CAPRINO-OVINOCULTURA DE CORTE, 3., 2009, João Pessoa. Anais... João Pessoa: EMEPA-PB, 2009. 3 f. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 17. | | VIEIRA, A. D. S.; SILVA, L. M. F. da; MARTINEZ, R. C. R.; SAAD, S. M. I.; SANTOS, K. M. O. dos. Effect of goat fresh cheese addition on the technological characteristics of guava goat milk ice cream. In: WORLD CONGRESS OF FOOD SCIENCE AND TECHNOLOGY, 16.; LATIN AMERICAN SEMINAR OF FOOD SCIENCE AND TECHNOLOGY, 17., 2012, Foz do Iguaçu. Addressing global food security and wellness through food science and technology: abstracts. Foz do Iguaçu: ALACCTA, 2012. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 18. | | EGITO, A. S. do; SILVA, L. M. F. da; MARTINEZ, R. C. R.; SAAD, S. M. I.; SANTOS, K. M. O. dos. Effect of goat milk and fresh cheese matrix on the survival of Bifidobacterium animalis subsp. lactis Bb-12 to simulated gastrointestinal. In: WORLD CONGRESS OF FOOD SCIENCE AND TECHNOLOGY, 16.; LATIN AMERICAN SEMINAR OF FOOD SCIENCE AND TECHNOLOGY, 17., 2012, Foz do Iguaçu. Addressing global food security and wellness through food science and technology: abstracts. Foz do Iguaçu: ALACCTA, 2012. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 19. | | FERNANDES, D. R.; COSTA, V. M. D.; SILVA, L. M. F. da; SANTOS, J. M. L. dos; PINHEIRO, R. R.; MONTEIRO, J. P.; SOUZA, V. de. Identificação de Staphylococuus aureus utilizando a técnica de PCR em tempo-real em casos de mastite subclínica caprina. In: CONGRESSO BRASILEIRO DE QUALIDADE DO LEITE, 6., 2015, Curitiba. Anais... Curitiba: CBQL, 2015. Resumo 42. p. 83-84.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| Registros recuperados : 30 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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