Data/hora: 13/06/2024 12:31:05

Biblioteca(s): | Embrapa Solos.
Data corrente: | 22/11/2002
Data da última atualização: | 22/11/2002
Autoria: | HORVATH, E. H.; FOSNIGHT, E. A.; KLINGEBIEL, A. A.; MOORE, D. G.; STONE, J. E.
Título: | Using a spatial and tabular database to generate statistics from terrain and spectral data for soil surveys.
Ano de publicação: | 1987
Fonte/Imprenta: | In: REYBOLD, W.U.; PETERSEN, G.W. Soil survey techniques. Madison: Soil Science Society of America, 1987.
Páginas: | p.91-98
ISBN: | 0 89118 783 9
Idioma: | Inglês
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.
Palavras-Chave: | Computacao.
Thesagro: | Levantamento; Solo.
Categoria do assunto: | --
Registro original: | Embrapa Solos (CNPS)
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