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Registro Completo |
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
09/03/2009 |
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Data da última atualização: |
26/08/2014 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ALVES, D. S.; BATISTELLA, M.; LINHARES, C. A. |
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Afiliação: |
DIOGENES S. ALVES, INPE; MATEUS BATISTELLA, CNPM; CLAUDIA A. LINHARES, INPE. |
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Título: |
An analysis of landscape fragmentation in the Brazilian Amazon based on deforestation data derived from Landsat imagery. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: CONFERÊNCIA CIENTÍFICA INTERNACIONAL AMAZÔNIA EM PERSPECTIVA CIÊNCIA INTEGRADA PARA UM FUTURO SUSTENTÁVEL, 2008. Manaus: Conference Abstracts ... Brasília, DF: LBA, 2008. |
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Páginas: |
1 p. |
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Descrição Física: |
1 - CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
Deforestation in the Brazilian Amazon has produced fragmentation of the largest tropical rain forest in the planet resulting in impacts over biodiversity and the functioning of ecosystems. Most of the deforestation is known to be concentrated near major roads and areas of pioneer colonization, but few studies have quantitatively analyzed patterns and processes of landscape fragmentation associated with this spatial dynamics. In this paper we evaluate the effect of forest clearing based on two landscape metrics - percent cleared and percolation - for areas in the states of Mato Grosso, Pará, and Rondônia where the largest rates of deforestation have been observed. Deforestation data included one data set derived from Landsat MSS imagery for the 1970?s and one based on Landsat TM imagery for 2006. Forest fragments in 2006 within 25-km of areas deforested since 1978 - where a large majority of recent deforestation has been concentrated - were analyzed to assess how landscape fragmentation has evolved following the diffusion of forest clearing within a relatively close neighborhood of the 1978 deforestation. The distribution of deforestation for regular ¼-degree grid cells with different values of percent cleared was estimated as a proxy for the distribution of the equivalent metric based on actual farm limits. The fractions of deforestation for larger categories of percent cleared have increased during the diffusion of forest clearing and a majority of the total 2006 deforestation belonged to areas with less than 50% of forest remnants, taking as reference the Brazilian forest regulations. The diffusion of deforestation has resulted in different patterns of landscape fragmentation based on estimated percolation and we propose an analysis of such patterns based on geographic differences. MenosDeforestation in the Brazilian Amazon has produced fragmentation of the largest tropical rain forest in the planet resulting in impacts over biodiversity and the functioning of ecosystems. Most of the deforestation is known to be concentrated near major roads and areas of pioneer colonization, but few studies have quantitatively analyzed patterns and processes of landscape fragmentation associated with this spatial dynamics. In this paper we evaluate the effect of forest clearing based on two landscape metrics - percent cleared and percolation - for areas in the states of Mato Grosso, Pará, and Rondônia where the largest rates of deforestation have been observed. Deforestation data included one data set derived from Landsat MSS imagery for the 1970?s and one based on Landsat TM imagery for 2006. Forest fragments in 2006 within 25-km of areas deforested since 1978 - where a large majority of recent deforestation has been concentrated - were analyzed to assess how landscape fragmentation has evolved following the diffusion of forest clearing within a relatively close neighborhood of the 1978 deforestation. The distribution of deforestation for regular ¼-degree grid cells with different values of percent cleared was estimated as a proxy for the distribution of the equivalent metric based on actual farm limits. The fractions of deforestation for larger categories of percent cleared have increased during the diffusion of forest clearing and a majority of the total 2006 deforestat... Mostrar Tudo |
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Palavras-Chave: |
Florestas Amazonica; Fragmentação da Floresta. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/107274/1/2315.pdf
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Marc: |
LEADER 02542nam a2200181 a 4500
001 1031677
005 2014-08-26
008 2008 bl uuuu u00u1 u #d
100 1 $aALVES, D. S.
245 $aAn analysis of landscape fragmentation in the Brazilian Amazon based on deforestation data derived from Landsat imagery.$h[electronic resource]
260 $aIn: CONFERÊNCIA CIENTÍFICA INTERNACIONAL AMAZÔNIA EM PERSPECTIVA CIÊNCIA INTEGRADA PARA UM FUTURO SUSTENTÁVEL, 2008. Manaus: Conference Abstracts ... Brasília, DF: LBA$c2008
300 $a1 p.$c1 - CD-ROM.
520 $aDeforestation in the Brazilian Amazon has produced fragmentation of the largest tropical rain forest in the planet resulting in impacts over biodiversity and the functioning of ecosystems. Most of the deforestation is known to be concentrated near major roads and areas of pioneer colonization, but few studies have quantitatively analyzed patterns and processes of landscape fragmentation associated with this spatial dynamics. In this paper we evaluate the effect of forest clearing based on two landscape metrics - percent cleared and percolation - for areas in the states of Mato Grosso, Pará, and Rondônia where the largest rates of deforestation have been observed. Deforestation data included one data set derived from Landsat MSS imagery for the 1970?s and one based on Landsat TM imagery for 2006. Forest fragments in 2006 within 25-km of areas deforested since 1978 - where a large majority of recent deforestation has been concentrated - were analyzed to assess how landscape fragmentation has evolved following the diffusion of forest clearing within a relatively close neighborhood of the 1978 deforestation. The distribution of deforestation for regular ¼-degree grid cells with different values of percent cleared was estimated as a proxy for the distribution of the equivalent metric based on actual farm limits. The fractions of deforestation for larger categories of percent cleared have increased during the diffusion of forest clearing and a majority of the total 2006 deforestation belonged to areas with less than 50% of forest remnants, taking as reference the Brazilian forest regulations. The diffusion of deforestation has resulted in different patterns of landscape fragmentation based on estimated percolation and we propose an analysis of such patterns based on geographic differences.
650 $aAmazonia
653 $aFlorestas Amazonica
653 $aFragmentação da Floresta
700 1 $aBATISTELLA, M.
700 1 $aLINHARES, C. A.
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Registro original: |
Embrapa Territorial (CNPM) |
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| Registros recuperados : 12 | |
| 4. |  | ALVES, D. S.; MORTON, D. C.; BATISTELLA, M.; ROBERTS, D. A.; SOUZA JR, C. The changing rates and patterns of deforestation and land use in Brazilian Amazonia. In: KELLER, M.; BUSTAMANTE, M.; GASH, J.; DIAS, P. S. (Ed.). Amazonia and global change. Washington: American Geophysical Union, 2009. p. 11-24. (Geophysical Monograph, 186)| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Territorial. |
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| 8. | | BATISTELLA, M.; ALVES, D. S.; MORAN, E. F.; SOUZA, Jr. C.; WALKER, R.; WALSH, S. J. People and environment in Amazonia: the LBA experience and other perspectives. change. In: KELLER, M.; BUSTAMANTE, M.; GASH, J.; DIAS, P. S. (Ed.). Amazonia and global Washington: American Geophysical Union, 2009. p. 1-10 (Geophysical Monograph, 186)| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Territorial. |
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| 9. | | SPINELLI, V. M.; MORAES, M. S.; ALVES, D. S. B.; ROCHA, R. B.; RAMALHO, A. R.; TEIXEIRA, A. L. Contribution of agronomic traits to the coffee yield of Coffea canephora Pierre ex A. Froehner in the western Amazon region. Coffee Science, Lavras, v. 13, n. 3, p. 333-340, jul./sep. 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Rondônia. |
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| 10. | | FRANCA NETO, J. B.; HENNING, A. A.; COSTA, N. P.; ALVES, D. S.; COLAGIOVANNI, J. A. F. Efeito da aplicacao de fungicida foliar sobre o rendimento e qualidade da semente de soja, no municipio de Cassilandia, MS. In: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR). Resultados de pesquisa de soja 1984/85. Londrina, 1985. p.399-406. (EMBRAPA-CNPSo. Documentos, 15).| Biblioteca(s): Embrapa Soja. |
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| 11. | | FERNANDES, L. A.; ALVES, D. S.; RAMOS, S. J.; OLIVEIRA, F. A. de; COSTA, C. A. da; MARTINS, E. R. Nutrição mineral de plantas de maxixe-do-reino. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 40, n. 7, p. 719-722, jul. 2005 Notas Científicas.
Título em inglês: Mineral nutrition of Cyclanthera pedata.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 12. | | FRANCA NETO, J. de B.; HENNING, A. A.; COSTA, N. P. da; ALVES, D. S.; COLAGIOVANNI, J. A. F.; KRZYZANOWSKI, F. C. Efeito da aplicaco de fungicidas foliares sobre a qualidade de sementes de soja no municipio de Cassilandia, MS. In: CONGRESSO BRASILEIRO DE SEMENTES, 5., 1987, Gramado. Resumos dos trabalhos tecnicos. Brasilia: ABRATES, 1987. p.186.| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 12 | |
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