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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
14/02/2014 |
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Data da última atualização: |
11/03/2014 |
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Autoria: |
ARVOR, D.; MEIRELLES, M. S. P.; DUBREUIL, V.; BEGUÈ, A.; SHIMABUKURO, Y. E. |
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Afiliação: |
Damien Arvor; MARGARETH SIMOES P MEIRELLES, CNPS; Vincent Dubreuil; Agnès Bégué; Yosio E. Shimabukuro. |
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Título: |
Analyzing the agricultural transition in Mato Grosso, Brazil, using satellite-derived indices. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Applied Geography, v. 32, p. 702-713, 2011. |
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Idioma: |
Português |
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Conteúdo: |
The Amazonian state of Mato Grosso is the main production area for soybeans in Brazil and contains 31.3% of the national production as of 2009. The rapid evolution of the agricultural systems in this area shows that the region is experiencing a rapid agricultural transition. In this paper, we broke down this transition process into three steps: crop expansion, agricultural intensification and ecological intensification. We used remote sensing products to develop and compute satellite-derived indices describing the main agricultural dynamics during the cropping years from 2000e2001 to 2006e2007. Our results indicated that Mato Grosso is continuing to expand its agricultural sector, with a 43% increase in the net cropped area during the study period. Although this expansion mainly occurred in the cerrado ecoregion until the early 2000s, the forest ecoregion is experiencing expansion at this time.We observed that 65% of the crop expansion in Mato Grosso from 2000 to 2006 occurred in this ecoregion. However, we did not identify this crop expansion as the major driver of deforestation in Mato Grosso because only 12.6% of the cleared areas were directly converted into croplands. Agricultural intensification also evolved rapidly, as the proportion of the net cropped area cultivated with double cropping systems harvesting two successive commercial crops (i.e., soybean and corn or soybean and cotton) increased from 6% to 30% during the study period. Finally, we found that ecological intensification occurred because the region?s farmers planted a noncommercial crop (i.e., millet or sorghum) after the soybean harvest to prevent soil erosion, improve soil quality, break pest cycles, maintain soil moisture and set the conditions for high-quality no-tillage operations. In 2006e2007, 62% of the net cropped area was permanently covered by crops during the entire rainy season. This practice allowed the farmers to diversify their production, as shown by the positive evolution of the Area Diversity Index. Future scholars can use the method proposed in this paper to improve their understanding of the forces driving the agricultural dynamics in Mato Grosso. MenosThe Amazonian state of Mato Grosso is the main production area for soybeans in Brazil and contains 31.3% of the national production as of 2009. The rapid evolution of the agricultural systems in this area shows that the region is experiencing a rapid agricultural transition. In this paper, we broke down this transition process into three steps: crop expansion, agricultural intensification and ecological intensification. We used remote sensing products to develop and compute satellite-derived indices describing the main agricultural dynamics during the cropping years from 2000e2001 to 2006e2007. Our results indicated that Mato Grosso is continuing to expand its agricultural sector, with a 43% increase in the net cropped area during the study period. Although this expansion mainly occurred in the cerrado ecoregion until the early 2000s, the forest ecoregion is experiencing expansion at this time.We observed that 65% of the crop expansion in Mato Grosso from 2000 to 2006 occurred in this ecoregion. However, we did not identify this crop expansion as the major driver of deforestation in Mato Grosso because only 12.6% of the cleared areas were directly converted into croplands. Agricultural intensification also evolved rapidly, as the proportion of the net cropped area cultivated with double cropping systems harvesting two successive commercial crops (i.e., soybean and corn or soybean and cotton) increased from 6% to 30% during the study period. Finally, we found that ecological ... Mostrar Tudo |
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Palavras-Chave: |
Amazon Agricultural intensification; Crop expansion. |
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Thesaurus Nal: |
cropping systems; deforestation; remote sensing. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02858naa a2200229 a 4500
001 1979969
005 2014-03-11
008 2011 bl uuuu u00u1 u #d
100 1 $aARVOR, D.
245 $aAnalyzing the agricultural transition in Mato Grosso, Brazil, using satellite-derived indices.$h[electronic resource]
260 $c2011
520 $aThe Amazonian state of Mato Grosso is the main production area for soybeans in Brazil and contains 31.3% of the national production as of 2009. The rapid evolution of the agricultural systems in this area shows that the region is experiencing a rapid agricultural transition. In this paper, we broke down this transition process into three steps: crop expansion, agricultural intensification and ecological intensification. We used remote sensing products to develop and compute satellite-derived indices describing the main agricultural dynamics during the cropping years from 2000e2001 to 2006e2007. Our results indicated that Mato Grosso is continuing to expand its agricultural sector, with a 43% increase in the net cropped area during the study period. Although this expansion mainly occurred in the cerrado ecoregion until the early 2000s, the forest ecoregion is experiencing expansion at this time.We observed that 65% of the crop expansion in Mato Grosso from 2000 to 2006 occurred in this ecoregion. However, we did not identify this crop expansion as the major driver of deforestation in Mato Grosso because only 12.6% of the cleared areas were directly converted into croplands. Agricultural intensification also evolved rapidly, as the proportion of the net cropped area cultivated with double cropping systems harvesting two successive commercial crops (i.e., soybean and corn or soybean and cotton) increased from 6% to 30% during the study period. Finally, we found that ecological intensification occurred because the region?s farmers planted a noncommercial crop (i.e., millet or sorghum) after the soybean harvest to prevent soil erosion, improve soil quality, break pest cycles, maintain soil moisture and set the conditions for high-quality no-tillage operations. In 2006e2007, 62% of the net cropped area was permanently covered by crops during the entire rainy season. This practice allowed the farmers to diversify their production, as shown by the positive evolution of the Area Diversity Index. Future scholars can use the method proposed in this paper to improve their understanding of the forces driving the agricultural dynamics in Mato Grosso.
650 $acropping systems
650 $adeforestation
650 $aremote sensing
653 $aAmazon Agricultural intensification
653 $aCrop expansion
700 1 $aMEIRELLES, M. S. P.
700 1 $aDUBREUIL, V.
700 1 $aBEGUÈ, A.
700 1 $aSHIMABUKURO, Y. E.
773 $tApplied Geography$gv. 32, p. 702-713, 2011.
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Embrapa Solos (CNPS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
27/02/2002 |
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Data da última atualização: |
27/02/2002 |
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Autoria: |
BELTRÃO, N. E. de M.; CAVALCANTI, M. A.; SOUSA, R. P. de; NÓBREGA, L. B. da. |
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Título: |
Remoção de Botões Florais em Cultivares de Algodoeiro herbáceo. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, V. 25, n.11, p. 1619-1626, nov.1990 |
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Idioma: |
Português |
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Conteúdo: |
Visando verificar os efeitos da remoção periódica de botões florais em duas cultivares de algodoeiro herbáceo (Gossypiwn hirsutum L., r. lafifoliwn Hutch.), a CNPA 3H, de hábito de crescimento indeterminado e ciclo longo, e a CNPA Precoce 1, de ciclo curto e reduzido período de floração/frutificação, um experimento foi conduzido em casa de vegetação no ano de 1986, em Campina Grande, PB. Verificou-se que, independentemente da cultivar, a remogdo dos botões florais logo após o inicio da fase de botoamento, mesmo por somente 15 dias, aumentou significativamente a área foliar por planta e a fitomassa radicular. Com relar,fio A fitomassa total e A altura da planta, os aumentos foram diferentes entre as cultivares, o que evidencia que sem as estruturas de reprodução, por um período igual ou maior que 30 dias, a CNPA 3H apresentou um satisfatório investimento nos seus órgãos vegetativos. No que diz respeito A produção de algodão em caroço, verificou-se redução significativa na primeira colheita, mesmo com apenas 15 dias de remoção dos botões florais, independentemente da cultivar.
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Palavras-Chave: |
algodão em caroço; altura do algodoeiro; fitomassa; Gossypiwn hirsutum r; lafifolium. |
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Thesagro: |
Área Foliar. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01795naa a2200229 a 4500
001 1106553
005 2002-02-27
008 1990 bl uuuu u00u1 u #d
100 1 $aBELTRÃO, N. E. de M.
245 $aRemoção de Botões Florais em Cultivares de Algodoeiro herbáceo.
260 $c1990
520 $aVisando verificar os efeitos da remoção periódica de botões florais em duas cultivares de algodoeiro herbáceo (Gossypiwn hirsutum L., r. lafifoliwn Hutch.), a CNPA 3H, de hábito de crescimento indeterminado e ciclo longo, e a CNPA Precoce 1, de ciclo curto e reduzido período de floração/frutificação, um experimento foi conduzido em casa de vegetação no ano de 1986, em Campina Grande, PB. Verificou-se que, independentemente da cultivar, a remogdo dos botões florais logo após o inicio da fase de botoamento, mesmo por somente 15 dias, aumentou significativamente a área foliar por planta e a fitomassa radicular. Com relar,fio A fitomassa total e A altura da planta, os aumentos foram diferentes entre as cultivares, o que evidencia que sem as estruturas de reprodução, por um período igual ou maior que 30 dias, a CNPA 3H apresentou um satisfatório investimento nos seus órgãos vegetativos. No que diz respeito A produção de algodão em caroço, verificou-se redução significativa na primeira colheita, mesmo com apenas 15 dias de remoção dos botões florais, independentemente da cultivar.
650 $aÁrea Foliar
653 $aalgodão em caroço
653 $aaltura do algodoeiro
653 $afitomassa
653 $aGossypiwn hirsutum r
653 $alafifolium
700 1 $aCAVALCANTI, M. A.
700 1 $aSOUSA, R. P. de
700 1 $aNÓBREGA, L. B. da
773 $tPesquisa Agropecuária Brasileira, Brasília, V. 25$gn.11, p. 1619-1626, nov.1990
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