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Registro Completo |
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Biblioteca(s): |
Embrapa Territorial; Embrapa Unidades Centrais. |
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Data corrente: |
22/11/2012 |
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Data da última atualização: |
28/10/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LU, D.; BATISTELLA, M.; LI, G.; MORAN, E.; HETRICK, S.; FREITAS, C. DA C.; SANT'ANNA, S. J. |
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Afiliação: |
DENGSHENG LU, INDIANA UNIVERSITY; MATEUS BATISTELLA, CNPM; GUIYING LI, INDIANA UNIVERSITY; EMILIO MORAN, INDIANA UNIVERSITY; SCOTT HETRICK, INDIANA UNIVERSITY; CORINA DA COSTA FREITAS, INPE; SIDNEI JOÃO SIQUEIRA SANT'ANNA, INPE. |
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Título: |
Land use/cover classification in the Brazilian Amazon using satellite images. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasilia, DF, v. 47, n. 9, p. 1185-1208, set. 2012. |
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Páginas: |
p. 1185-1208. |
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DOI: |
dx.doi.org/10.1590/S0100-204X2012000900004 |
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Idioma: |
Inglês |
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Conteúdo: |
Land use/cover classification is one of the most important applications in remote sensing. However, mapping accurate land use/cover spatial distribution is a challenge, particularly in moist tropical regions, due to the complex biophysical environment and limitations of remote sensing data per se. This paper reviews experiments related to land use/cover classification in the Brazilian Amazon for a decade. Through comprehensive analysis of the classification results, it is concluded that spatial information inherent in remote sensing data plays an essential role in improving land use/cover classification. Incorporation of suitable textural images into multispectral bands and use of segmentation?based method are valuable ways to improve land use/cover classification, especially for high spatial resolution images. Data fusion of multi?resolution images within optical sensor data is vital for visual interpretation, but may not improve classification performance. In contrast, integration of optical and radar data did improve classification performance when the proper data fusion method was used. Of the classification algorithms available, the maximum likelihood classifier is still an important method for providing reasonably good accuracy, but nonparametric algorithms, such as classification tree analysis, has the potential to provide better results. However, they often require more time to achieve parametric optimization. Proper use of hierarchical?based methods is fundamental for developing accurate land use/cover classification, mainly from historical remotely sensed data. MenosLand use/cover classification is one of the most important applications in remote sensing. However, mapping accurate land use/cover spatial distribution is a challenge, particularly in moist tropical regions, due to the complex biophysical environment and limitations of remote sensing data per se. This paper reviews experiments related to land use/cover classification in the Brazilian Amazon for a decade. Through comprehensive analysis of the classification results, it is concluded that spatial information inherent in remote sensing data plays an essential role in improving land use/cover classification. Incorporation of suitable textural images into multispectral bands and use of segmentation?based method are valuable ways to improve land use/cover classification, especially for high spatial resolution images. Data fusion of multi?resolution images within optical sensor data is vital for visual interpretation, but may not improve classification performance. In contrast, integration of optical and radar data did improve classification performance when the proper data fusion method was used. Of the classification algorithms available, the maximum likelihood classifier is still an important method for providing reasonably good accuracy, but nonparametric algorithms, such as classification tree analysis, has the potential to provide better results. However, they often require more time to achieve parametric optimization. Proper use of hierarchical?based methods is fundamental f... Mostrar Tudo |
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Palavras-Chave: |
Classificador não paramétrico; Dado de sensor múltiplo; Data fusion; Fusão de dados; Multiple sensor data; Nonparametric classifiers. |
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Thesagro: |
Textura. |
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Thesaurus Nal: |
Texture. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/70627/1/BatistellaPAB.pdf
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Marc: |
LEADER 02522naa a2200313 a 4500
001 1940299
005 2014-10-28
008 2012 bl uuuu u00u1 u #d
024 7 $adx.doi.org/10.1590/S0100-204X2012000900004$2DOI
100 1 $aLU, D.
245 $aLand use/cover classification in the Brazilian Amazon using satellite images.
260 $c2012
300 $ap. 1185-1208.
520 $aLand use/cover classification is one of the most important applications in remote sensing. However, mapping accurate land use/cover spatial distribution is a challenge, particularly in moist tropical regions, due to the complex biophysical environment and limitations of remote sensing data per se. This paper reviews experiments related to land use/cover classification in the Brazilian Amazon for a decade. Through comprehensive analysis of the classification results, it is concluded that spatial information inherent in remote sensing data plays an essential role in improving land use/cover classification. Incorporation of suitable textural images into multispectral bands and use of segmentation?based method are valuable ways to improve land use/cover classification, especially for high spatial resolution images. Data fusion of multi?resolution images within optical sensor data is vital for visual interpretation, but may not improve classification performance. In contrast, integration of optical and radar data did improve classification performance when the proper data fusion method was used. Of the classification algorithms available, the maximum likelihood classifier is still an important method for providing reasonably good accuracy, but nonparametric algorithms, such as classification tree analysis, has the potential to provide better results. However, they often require more time to achieve parametric optimization. Proper use of hierarchical?based methods is fundamental for developing accurate land use/cover classification, mainly from historical remotely sensed data.
650 $aTexture
650 $aTextura
653 $aClassificador não paramétrico
653 $aDado de sensor múltiplo
653 $aData fusion
653 $aFusão de dados
653 $aMultiple sensor data
653 $aNonparametric classifiers
700 1 $aBATISTELLA, M.
700 1 $aLI, G.
700 1 $aMORAN, E.
700 1 $aHETRICK, S.
700 1 $aFREITAS, C. DA C.
700 1 $aSANT'ANNA, S. J.
773 $tPesquisa Agropecuária Brasileira, Brasilia, DF$gv. 47, n. 9, p. 1185-1208, set. 2012.
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Registro original: |
Embrapa Territorial (CNPM) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
01/02/1996 |
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Data da última atualização: |
01/02/1996 |
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Autoria: |
SPEHAR, C. R. |
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Título: |
Impact of strategic genes in soybean on agricultural development in the Brazilian tropical savannahs. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Field Crops Research, Amsterdam, v.41, p.141-146, 1995. |
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Idioma: |
Inglês |
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Conteúdo: |
The cerrados of Brazil are typical of low-latitude tropical savannah areas in which agriculture is limited by low soil fertility and pH and high concentrations of aluminium. Since the 1960s, the traditional extensive cattle ranching has shifted to agriculture with the cultivation of rain-fed rice and, more recently, soybean (Glycine max (L.) Merrill). Introduction of soybean into these areas has depended on selection of cultivars carrying strategic genes determining a few key characteristics, principally late maturity, high aluminium tolerance and calcium-use efficiency. The methods used in developing adapted varieties are reviewed. Identification of the long-juvenile character and selection of genotypes in which this stage is prolonged are identified as keys inthe systematic exploitation of plant yield potential. New screening techniques reveal that these savannah-adapted genotypes also carry genes for high-Al and low-Ca tolerances, which allow deep rooting of plants and, consequently, drought tolerance. The conjugation of these favourable characters is essential to the development of sustainable agriculture in the cerrados. |
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Palavras-Chave: |
Agricultural development; Aluminium; Maturity; Tolerance; Tolerancia. |
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Thesagro: |
Alumínio; Cálcio; Cerrado; Desenvolvimento Agrícola; Fertilidade do Solo; Glycine Max; Maturação; Melhoramento Genético Vegetal; Soja. |
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Thesaurus NAL: |
calcium; plant breeding; soil fertility; soybeans. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02055naa a2200337 a 4500
001 1550819
005 1996-02-01
008 1995 bl --- 0-- u #d
100 1 $aSPEHAR, C. R.
245 $aImpact of strategic genes in soybean on agricultural development in the Brazilian tropical savannahs.
260 $c1995
520 $aThe cerrados of Brazil are typical of low-latitude tropical savannah areas in which agriculture is limited by low soil fertility and pH and high concentrations of aluminium. Since the 1960s, the traditional extensive cattle ranching has shifted to agriculture with the cultivation of rain-fed rice and, more recently, soybean (Glycine max (L.) Merrill). Introduction of soybean into these areas has depended on selection of cultivars carrying strategic genes determining a few key characteristics, principally late maturity, high aluminium tolerance and calcium-use efficiency. The methods used in developing adapted varieties are reviewed. Identification of the long-juvenile character and selection of genotypes in which this stage is prolonged are identified as keys inthe systematic exploitation of plant yield potential. New screening techniques reveal that these savannah-adapted genotypes also carry genes for high-Al and low-Ca tolerances, which allow deep rooting of plants and, consequently, drought tolerance. The conjugation of these favourable characters is essential to the development of sustainable agriculture in the cerrados.
650 $acalcium
650 $aplant breeding
650 $asoil fertility
650 $asoybeans
650 $aAlumínio
650 $aCálcio
650 $aCerrado
650 $aDesenvolvimento Agrícola
650 $aFertilidade do Solo
650 $aGlycine Max
650 $aMaturação
650 $aMelhoramento Genético Vegetal
650 $aSoja
653 $aAgricultural development
653 $aAluminium
653 $aMaturity
653 $aTolerance
653 $aTolerancia
773 $tField Crops Research, Amsterdam$gv.41, p.141-146, 1995.
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