01326nam a2200145 a 450000100080000000500110000800800410001910000200006024501040008026001320018452008110031665000090112765000280113670000160116414843222018-06-06       2006    bl uuuu     u00u1 u    #d1 aVIANA, J. H. M.  aThe use of GIS and additional information to check soil classification maps.h[electronic resource]  aIn: GLOBAL WORKSHOP ON DIGITAL SOIL MAPPING, 2., 2006, Rio de Janeiro. Book of abstracts... Rio de Janeiro: Embrapa Solosc2006  aThe aim of this work was to check the limits of the soil classification map using GlS tools and additional information. The information from the geology map, the digital elevation model, Aster images and the detailed soil classification map was used to establish the criteria for automatic classification, using some classification attributes as local elevation, slope and pixels values in images. The new reclassified soil map was compared to the original, and sampling was performed in points in field where the maps didn't match to access the quality of results. The results showed that this method is a promising tool to obtain better quality in digital soil information and to direct sampling, but the accuracy may be limited by the resolution of the available data, and field validation is necessary.  aSoil  aClassificação do solo1 aAVELLAR, G.