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Registro Completo |
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
17/02/2017 |
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Data da última atualização: |
13/07/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MORTON, D. C.; NOOJIPADY, P.; MACEDO, M. M.; GIBBS, H.; VICTORIA, D. de C.; BOLFE, E. L. |
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Afiliação: |
Douglas C. Morton, NASA Goddard Space Flight Center; Praveen Noojipady, NASA Goddard Space Flight Center; Marcia M. Macedo, Woods Hole Research Center; Holly Gibbs, University of Wisconsin; DANIEL DE CASTRO VICTORIA, CNPM; EDSON LUIS BOLFE, SIM. |
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Título: |
Reevaluating suitability estimates based on dynamics of cropland expansion in the Brazilian Amazon |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Global Environmental Change, v. 37, p. 92 - 101, 2016. |
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DOI: |
http://dx.doi.org/10.1016/j.gloenvcha.2016.02.001 |
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Idioma: |
Inglês |
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Conteúdo: |
Agricultural suitability maps are a key input for land use zoning and projections of cropland expansion. Suitability assessments typically consider edaphic conditions, climate, crop characteristics, and sometimes incorporate accessibility to transportation and market infrastructure. However, correct weighting among these disparate factors is challenging, given rapid development of new crop varieties, irrigation, and road networks, as well as changing global demand for agricultural commodities. Here, we compared three independent assessments of cropland suitability to spatial and temporal dynamics of agricultural expansion in the Brazilian state of Mato Grosso during 2001?2012. We found that areas of recent cropland expansion identified using satellite data were generally designated as low to moderate suitability for rainfed crop production. Our analysis highlighted the abrupt nature of suitability boundaries, rather than smooth gradients of agricultural potential, with little additional cropland expansion beyond the extent of the flattest areas (0?2% slope). Satellite-based estimates of the interannual variability in the use of existing crop areas also provided an alternate means to assess suitability. On average, cropland areas in the Cerrado biome had higher utilization (84%) than croplands in the Amazon region of northern Mato Grosso (74%). Areas of more recent expansion had lower utilization than croplands established before 2002, providing empirical evidence for lower suitability or alternative management strategies (e.g., pasture?soya rotations) for lands undergoing more recent land use transitions. This unplanted reserve constitutes a large area of potentially available cropland (PAC) without further expansion, within the management limits imposed for pest management and fallow cycles. Using two key constraints on future cropland expansion, slope and restrictions on further deforestation of Amazon or Cerrado vegetation, we found little available flat land for further legal expansion of crop production in Mato Grosso. Dynamics of cropland expansion from more than a decade of satellite observations indicated narrow ranges of suitability criteria, restricting PAC under current policy conditions, and emphasizing the advantages of field-scale information to assess suitability and utilization. MenosAgricultural suitability maps are a key input for land use zoning and projections of cropland expansion. Suitability assessments typically consider edaphic conditions, climate, crop characteristics, and sometimes incorporate accessibility to transportation and market infrastructure. However, correct weighting among these disparate factors is challenging, given rapid development of new crop varieties, irrigation, and road networks, as well as changing global demand for agricultural commodities. Here, we compared three independent assessments of cropland suitability to spatial and temporal dynamics of agricultural expansion in the Brazilian state of Mato Grosso during 2001?2012. We found that areas of recent cropland expansion identified using satellite data were generally designated as low to moderate suitability for rainfed crop production. Our analysis highlighted the abrupt nature of suitability boundaries, rather than smooth gradients of agricultural potential, with little additional cropland expansion beyond the extent of the flattest areas (0?2% slope). Satellite-based estimates of the interannual variability in the use of existing crop areas also provided an alternate means to assess suitability. On average, cropland areas in the Cerrado biome had higher utilization (84%) than croplands in the Amazon region of northern Mato Grosso (74%). Areas of more recent expansion had lower utilization than croplands established before 2002, providing empirical evidence for lower s... Mostrar Tudo |
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Palavras-Chave: |
Amazon; Soya. |
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Thesaurus Nal: |
zoning. |
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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/156065/1/4802.pdf
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Marc: |
LEADER 03022naa a2200229 a 4500
001 2064681
005 2017-07-13
008 2016 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.gloenvcha.2016.02.001$2DOI
100 1 $aMORTON, D. C.
245 $aReevaluating suitability estimates based on dynamics of cropland expansion in the Brazilian Amazon$h[electronic resource]
260 $c2016
520 $aAgricultural suitability maps are a key input for land use zoning and projections of cropland expansion. Suitability assessments typically consider edaphic conditions, climate, crop characteristics, and sometimes incorporate accessibility to transportation and market infrastructure. However, correct weighting among these disparate factors is challenging, given rapid development of new crop varieties, irrigation, and road networks, as well as changing global demand for agricultural commodities. Here, we compared three independent assessments of cropland suitability to spatial and temporal dynamics of agricultural expansion in the Brazilian state of Mato Grosso during 2001?2012. We found that areas of recent cropland expansion identified using satellite data were generally designated as low to moderate suitability for rainfed crop production. Our analysis highlighted the abrupt nature of suitability boundaries, rather than smooth gradients of agricultural potential, with little additional cropland expansion beyond the extent of the flattest areas (0?2% slope). Satellite-based estimates of the interannual variability in the use of existing crop areas also provided an alternate means to assess suitability. On average, cropland areas in the Cerrado biome had higher utilization (84%) than croplands in the Amazon region of northern Mato Grosso (74%). Areas of more recent expansion had lower utilization than croplands established before 2002, providing empirical evidence for lower suitability or alternative management strategies (e.g., pasture?soya rotations) for lands undergoing more recent land use transitions. This unplanted reserve constitutes a large area of potentially available cropland (PAC) without further expansion, within the management limits imposed for pest management and fallow cycles. Using two key constraints on future cropland expansion, slope and restrictions on further deforestation of Amazon or Cerrado vegetation, we found little available flat land for further legal expansion of crop production in Mato Grosso. Dynamics of cropland expansion from more than a decade of satellite observations indicated narrow ranges of suitability criteria, restricting PAC under current policy conditions, and emphasizing the advantages of field-scale information to assess suitability and utilization.
650 $azoning
653 $aAmazon
653 $aSoya
700 1 $aNOOJIPADY, P.
700 1 $aMACEDO, M. M.
700 1 $aGIBBS, H.
700 1 $aVICTORIA, D. de C.
700 1 $aBOLFE, E. L.
773 $tGlobal Environmental Change$gv. 37, p. 92 - 101, 2016.
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Registro original: |
Embrapa Territorial (CNPM) |
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| Registros recuperados : 176 | |
| 1. |  | PITTA, G. V. E. Acidez do solo. In: EMPRESA BRASILEIRA DE PESQUISA AGROPECUARIA. Centro Nacional de Pesquisa de Milho e Sorgo. Solos da região Centro Sul: potencialidades e limitações para as culturas de milho e sorgo. Sete Lagoas, 1978. p. 70-84.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 3. | | PITTA, G. V. E. Situação da cultura do sorgo no Brasil. In: EMBRAPA. Centro de Nacional de Pesquisa de Milho e Sorgo. Relatório técnico anual do Centro Nacional de Pesquisa de Milho e Sorgo 1985-1987. Sete Lagoas, 1991. p. 101-102.| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 5. | | PITTA, G. V. E. Fenômeno de troca de cations e anions no solo. In: EMPRESA BRASILEIRA DE PESQUISA AGROPECUARIA. Centro Nacional de Pesquisa de Milho e Sorgo. Sete Lagoas, MG. Solos na região Centro Sul: potencialidades e limitações para as culturas de milho e sorgo. Sete Lagoas, 1978. p. 21-25.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 176 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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