Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
08/08/1994 |
Data da última atualização: |
25/06/2025 |
Autoria: |
SKIDMORE, A. K.; RYAN, P. J.; DAWES, W.; SHORT, D.; O'LOUGHLIN, E. |
Título: |
Use of an expert system to map forest soils from a geographical information system. |
Ano de publicação: |
1991 |
Fonte/Imprenta: |
International Journal of Geographical Information Systems, v. 5, n. 4, p. 431-445, 1991. |
Idioma: |
Inglês |
Conteúdo: |
Mapping forest soils using conventional methods is time consuming and expensive. An expert system is described and applied to the mapping of five forest soil-landscape units formed on a single granitoid parent material. Three thematic maps were considered important in influencing the distribution of soils. The first showed the distribution of nine classes of native eucalypt forests, and the second and third were derived from a digital elevation model and represented slope gradient and a soil wetness index combined with topographical position. These layers were input to a raster based geographical information system (GIS) and then geometrically co-registered to a regular 30 m grid. From a knowledge of soil distributions, the relationships between the soil-landscape units and the three data layers were quantified by an experienced soil scientist and used as rules in a rule based expert system. The thematic layers accessed from the GIS provided data for the expert system to infer the forest soil-landscape unit most likely to occur at any given pixel. The soil-landscape map output by the expert system compared favourably with a conventional soil-landscape map generated using interpretation of aerial photographs. |
Palavras-Chave: |
Forest. |
Thesagro: |
Sistema de Informação Geográfica; Solo Florestal. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 01864naa a2200205 a 4500 001 1280038 005 2025-06-25 008 1991 bl uuuu u00u1 u #d 100 1 $aSKIDMORE, A. K. 245 $aUse of an expert system to map forest soils from a geographical information system.$h[electronic resource] 260 $c1991 520 $aMapping forest soils using conventional methods is time consuming and expensive. An expert system is described and applied to the mapping of five forest soil-landscape units formed on a single granitoid parent material. Three thematic maps were considered important in influencing the distribution of soils. The first showed the distribution of nine classes of native eucalypt forests, and the second and third were derived from a digital elevation model and represented slope gradient and a soil wetness index combined with topographical position. These layers were input to a raster based geographical information system (GIS) and then geometrically co-registered to a regular 30 m grid. From a knowledge of soil distributions, the relationships between the soil-landscape units and the three data layers were quantified by an experienced soil scientist and used as rules in a rule based expert system. The thematic layers accessed from the GIS provided data for the expert system to infer the forest soil-landscape unit most likely to occur at any given pixel. The soil-landscape map output by the expert system compared favourably with a conventional soil-landscape map generated using interpretation of aerial photographs. 650 $aSistema de Informação Geográfica 650 $aSolo Florestal 653 $aForest 700 1 $aRYAN, P. J. 700 1 $aDAWES, W. 700 1 $aSHORT, D. 700 1 $aO'LOUGHLIN, E. 773 $tInternational Journal of Geographical Information Systems$gv. 5, n. 4, p. 431-445, 1991.
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Registro original: |
Embrapa Florestas (CNPF) |
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