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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
22/11/2002 |
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Data da última atualização: |
22/11/2002 |
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Autoria: |
HORVATH, E. H.; FOSNIGHT, E. A.; KLINGEBIEL, A. A.; MOORE, D. G.; STONE, J. E. |
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Título: |
Using a spatial and tabular database to generate statistics from terrain and spectral data for soil surveys. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
In: REYBOLD, W.U.; PETERSEN, G.W. Soil survey techniques. Madison: Soil Science Society of America, 1987. |
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Páginas: |
p.91-98 |
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ISBN: |
0 89118 783 9 |
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Idioma: |
Inglês |
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Conteúdo: |
A methodology has been developed to create a spatial database by referencing digital elevation, Landsat multispectral scanner data, and digitized soil premap delineations of a number of adjacent 7.5-min. quadrangle areas to a 30-m Universal Transverse Mercator projection. Slope and aspect transformations are claculated from elevation data and grouped according to field office specifications. An unsupervised classification is performed on a brightnees and greennes transformation of the 7.5-min quadrangle areas are then plotted and submitted to the field office to be incorporated into the soil premapping stages of a soil survey. A tabular database is created from spatial data by generating descriptive statistics for each data layer within each soil premap deli-neation. The tabular data base is then entered into a data base management system to be accessed by the field office personnel during the soil survey and to be used subsequent resource management decisions. |
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Palavras-Chave: |
Computacao. |
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Thesagro: |
Levantamento; Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01669naa a2200229 a 4500
001 1327784
005 2002-11-22
008 1987 bl uuuu u00u1 u #d
020 $a0 89118 783 9
100 1 $aHORVATH, E. H.
245 $aUsing a spatial and tabular database to generate statistics from terrain and spectral data for soil surveys.
260 $c1987
300 $ap.91-98
520 $aA methodology has been developed to create a spatial database by referencing digital elevation, Landsat multispectral scanner data, and digitized soil premap delineations of a number of adjacent 7.5-min. quadrangle areas to a 30-m Universal Transverse Mercator projection. Slope and aspect transformations are claculated from elevation data and grouped according to field office specifications. An unsupervised classification is performed on a brightnees and greennes transformation of the 7.5-min quadrangle areas are then plotted and submitted to the field office to be incorporated into the soil premapping stages of a soil survey. A tabular database is created from spatial data by generating descriptive statistics for each data layer within each soil premap deli-neation. The tabular data base is then entered into a data base management system to be accessed by the field office personnel during the soil survey and to be used subsequent resource management decisions.
650 $aLevantamento
650 $aSolo
653 $aComputacao
700 1 $aFOSNIGHT, E. A.
700 1 $aKLINGEBIEL, A. A.
700 1 $aMOORE, D. G.
700 1 $aSTONE, J. E.
773 $tIn: REYBOLD, W.U.; PETERSEN, G.W. Soil survey techniques. Madison: Soil Science Society of America, 1987.
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Embrapa Solos (CNPS) |
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