Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
17/01/2003 |
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Data da última atualização: |
14/11/2018 |
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Autoria: |
DEMATTÊ, J. A. M. |
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Afiliação: |
José Alexandre M. Demattê, Escola Superior de Agricultura Luiz de Queiroz - Esalq/Departamento de Solos e Nutrição de Plantas. |
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Título: |
Characterization and discrimination of soils by their reflected electromagnetic energy. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 37, n. 10, p. 1445-1458, out. 2002 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Caracterização e discriminação de solos pela sua energia eletromagnética refletida. |
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Conteúdo: |
The objective of this work was to verify if reflected energy of soils can characterize and discriminate them. A spectroradiometer (Spectral reflectance between: 400-2,500 nm) was utilized in laboratory. The soils evaluated are located in Bauru region, SP, Brazil, and are classified as Typic Argiudoll (TR), Typic Eutrorthox (LR), Typic Argiudoll (PE), Typic Haplortox (LE), Typic Paleudalf (PV) and Typic Quartzipsamment (AQ). They were characterized by their spectral reflectance as for descriptive conventional methods (Brazilian and International) according to the types of spectral curves. A method for the spectral descriptive evaluation of soils was established. It was possible to characterize and discriminate the soils by their spectral reflectance, with exception for LR and TR. The spectral differences were better identified by the general shape of spectral curves, by the intensity of band absorption and angle tendencies. These characteristics were mainly influenced by organic matter, iron, granulometry and mineralogy constituents. A reduction of iron and clay contents, which influenced higher reflectance intensity and shape variations, occurred on the soils LR/TR, PE, LE, PV and AQ, on that sequence. Soils of the same group with different clay textures could be discriminated. The conventional descriptive evaluation of spectral curves was less efficient on discriminating soils. Simulated orbital data discriminated soils mainly by bands 5 and 7. |
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Palavras-Chave: |
absortividade; espectrofotometria de infravermelho; infrared spectrophotometry; refletância. |
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Thesagro: |
Sensoriamento Remoto. |
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Thesaurus NAL: |
absorbance; reflectance; remote sensing. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/24065/1/1445.pdf
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Marc: |
LEADER 02277naa a2200229 a 4500
001 1108786
005 2018-11-14
008 2002 bl uuuu u00u1 u #d
100 1 $aDEMATTÊ, J. A. M.
245 $aCharacterization and discrimination of soils by their reflected electromagnetic energy.
260 $c2002
500 $aTítulo em português: Caracterização e discriminação de solos pela sua energia eletromagnética refletida.
520 $aThe objective of this work was to verify if reflected energy of soils can characterize and discriminate them. A spectroradiometer (Spectral reflectance between: 400-2,500 nm) was utilized in laboratory. The soils evaluated are located in Bauru region, SP, Brazil, and are classified as Typic Argiudoll (TR), Typic Eutrorthox (LR), Typic Argiudoll (PE), Typic Haplortox (LE), Typic Paleudalf (PV) and Typic Quartzipsamment (AQ). They were characterized by their spectral reflectance as for descriptive conventional methods (Brazilian and International) according to the types of spectral curves. A method for the spectral descriptive evaluation of soils was established. It was possible to characterize and discriminate the soils by their spectral reflectance, with exception for LR and TR. The spectral differences were better identified by the general shape of spectral curves, by the intensity of band absorption and angle tendencies. These characteristics were mainly influenced by organic matter, iron, granulometry and mineralogy constituents. A reduction of iron and clay contents, which influenced higher reflectance intensity and shape variations, occurred on the soils LR/TR, PE, LE, PV and AQ, on that sequence. Soils of the same group with different clay textures could be discriminated. The conventional descriptive evaluation of spectral curves was less efficient on discriminating soils. Simulated orbital data discriminated soils mainly by bands 5 and 7.
650 $aabsorbance
650 $areflectance
650 $aremote sensing
650 $aSensoriamento Remoto
653 $aabsortividade
653 $aespectrofotometria de infravermelho
653 $ainfrared spectrophotometry
653 $arefletância
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 37, n. 10, p. 1445-1458, out. 2002
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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