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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
29/01/1996 |
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Data da última atualização: |
07/11/2022 |
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Autoria: |
ANDRADE-LIMA, D. de. |
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Título: |
Panoramas de uma viagem de estudos. |
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Ano de publicação: |
1947 |
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Fonte/Imprenta: |
Boletim da Secretaria da Agricultura, Indústria e Comercio, v. 14, n. 2, p. 367-372, 1947. |
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Idioma: |
Português |
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Conteúdo: |
Viagem de estudo realizada pelo interior do Brasil, onde foi percorrida uma pequena parte de Alagoas, Permanbuco, de Recife a Petrolina, o Sertao Sao Franciscano da Bahia. |
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Palavras-Chave: |
Carnaubeira; Recursos naturais; Vale do Sao Francisco. |
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Thesagro: |
Solo; Vegetação. |
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Thesaurus Nal: |
Soil; Vegetation. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 00724naa a2200205 a 4500
001 1126362
005 2022-11-07
008 1947 bl uuuu u00u1 u #d
100 1 $aANDRADE-LIMA, D. de
245 $aPanoramas de uma viagem de estudos.
260 $c1947
520 $aViagem de estudo realizada pelo interior do Brasil, onde foi percorrida uma pequena parte de Alagoas, Permanbuco, de Recife a Petrolina, o Sertao Sao Franciscano da Bahia.
650 $aSoil
650 $aVegetation
650 $aSolo
650 $aVegetação
653 $aCarnaubeira
653 $aRecursos naturais
653 $aVale do Sao Francisco
773 $tBoletim da Secretaria da Agricultura, Indústria e Comercio$gv. 14, n. 2, p. 367-372, 1947.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
16/09/2014 |
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Data da última atualização: |
16/09/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
LU, D.; BATISTELLA, M.; MORAN, E.; MAUSEL, P. |
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Afiliação: |
DENSHENG LU, INDIANA UNIVERSITY; MATEUS BATISTELLA, CNPM; EMILIO MORAN, INDIANA UNIVERSITY; P. MAUSEL, INDIANA STATE UNIVERSITY. |
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Título: |
Application of spectral mixture analysis to Amazonian land-use and land-cover classification. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
International Journal of Remote Sensing, v. 25, n. 23, p. 5345-5358, 2004. |
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Idioma: |
Português |
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Conteúdo: |
Abundant vegetation species and associated complex forest stand structures in moist tropical regions often create difficulties in accurately classifying land-use and land-cover (LULC) features. This paper examines the value of spectral mixture analysis (SMA) using Landsat Thematic Mapper (TM) data for improving LULC classification accuracy in a moist tropical area in Rondbnia, Brazil. Different routines, such as constrained and unconstrained least-squares solutions, different numbers of endmembers, and minimum noise fraction transformation, were examined while implementing the SMA approach. A maximum likelihood classifier was also used to classify fraction images into seven LULC classes: mature forest, intermediate secondary succession, initial secondary succession, pasture, agricultural land, water, and bare land. The results of this study indicate that reducing correlation between image bands and using four endmembers improve classification accuracy. The overall classification accuracy was 86.6% for the seven LULC classes using the best SMA processing routine, which represents very good results for such a' complex environment. The overall classification accuracy using a maximum likelihood approach was 81.4%. Another finding is that use of constrained or unconstrained solutions for unmixing the atmospherically corrected or raw Landsat TM images does not have significant influence on LULC classification performances when image endmembers are used in a SMA approach. |
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Palavras-Chave: |
Landsat Thematic Mapper; Vegetation species. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/108491/1/4027.pdf
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Marc: |
LEADER 02032naa a2200181 a 4500
001 1995070
005 2014-09-16
008 2004 bl uuuu u00u1 u #d
100 1 $aLU, D.
245 $aApplication of spectral mixture analysis to Amazonian land-use and land-cover classification.
260 $c2004
520 $aAbundant vegetation species and associated complex forest stand structures in moist tropical regions often create difficulties in accurately classifying land-use and land-cover (LULC) features. This paper examines the value of spectral mixture analysis (SMA) using Landsat Thematic Mapper (TM) data for improving LULC classification accuracy in a moist tropical area in Rondbnia, Brazil. Different routines, such as constrained and unconstrained least-squares solutions, different numbers of endmembers, and minimum noise fraction transformation, were examined while implementing the SMA approach. A maximum likelihood classifier was also used to classify fraction images into seven LULC classes: mature forest, intermediate secondary succession, initial secondary succession, pasture, agricultural land, water, and bare land. The results of this study indicate that reducing correlation between image bands and using four endmembers improve classification accuracy. The overall classification accuracy was 86.6% for the seven LULC classes using the best SMA processing routine, which represents very good results for such a' complex environment. The overall classification accuracy using a maximum likelihood approach was 81.4%. Another finding is that use of constrained or unconstrained solutions for unmixing the atmospherically corrected or raw Landsat TM images does not have significant influence on LULC classification performances when image endmembers are used in a SMA approach.
653 $aLandsat Thematic Mapper
653 $aVegetation species
700 1 $aBATISTELLA, M.
700 1 $aMORAN, E.
700 1 $aMAUSEL, P.
773 $tInternational Journal of Remote Sensing$gv. 25, n. 23, p. 5345-5358, 2004.
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Embrapa Territorial (CNPM) |
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