Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/919783
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dc.contributor.authorCARVALHO JUNIOR, W. dept_BR
dc.contributor.authorCHAGAS, C. da S.pt_BR
dc.contributor.authorFERNANDES FILHO, E. I.pt_BR
dc.contributor.authorVIEIRA, C. A. O.pt_BR
dc.contributor.authorSCHAEFER, C. E. G.pt_BR
dc.contributor.authorBHERING, S. B.pt_BR
dc.contributor.authorFRANCELINO, M. R.pt_BR
dc.date.accessioned2012-03-21T11:11:11Zpt_BR
dc.date.available2012-03-21T11:11:11Zpt_BR
dc.date.created2012-03-21pt_BR
dc.date.issued2011pt_BR
dc.identifier.citationScientia Agricola, Piracicaba, v. 68, n. 6, p. 691-696, Nov./Dec. 2011.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/919783pt_BR
dc.descriptionGeomorphometric variables are applied in digital soil mapping because of their strong correlation with the disposition and distribution of pedological components of the landscapes. In this research, the relationship between environmental components of tropical hillslope areas in the Rio de Janeiro State, Brazil, artificial neural networks (ANN), and maximum likelihood algorithm (MaxLike) were evaluated with the aid of geoprocessing techniques. ANN and MaxLike were applied to soilscape mapping and the results were compared to the original map. The ANN architectures with seven and five neurons in the hidden layer produced the best classifications when using samples obtained systematically. When random samples were applied, the best neural net architectures were within 22 and 16 neurons in the hidden layer. In conclusion, the ANN can contribute to soilscape surveys, making map delineation faster and less expensive. The digital elevation model (DEM) and its derived attributes can contribute to the understanding of the soil-landscape relationship of tropical hillslope areas; the use of artificial neural networks and MaxLike is feasible for digital soilscape mapping. The systematic sampling method provided a global accuracy of 70 % and 65.9 % for the ANN and the MaxLike, respectively. When the random sampling method was applied, the ANN had a global accuracy of 69.6 %, and the MaxLike had an accuracy of 62.1 %, considering the total study area in relation to the reference map.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectAtributos geomorfométricospt_BR
dc.subjectMapeamento digital do solopt_BR
dc.subjectModelo digital de elevaçãopt_BR
dc.titleDigital soilscape mapping of tropical hillslope areas by neural networks.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2018-02-01T11:11:11Zpt_BR
riaa.ainfo.id919783pt_BR
riaa.ainfo.lastupdate2018-02-01 -02:00:00pt_BR
dc.identifier.doihttps://doi.org/10.1590/S0103-90162011000600014pt_BR
dc.contributor.institutionWALDIR DE CARVALHO JUNIOR, CNPS; CESAR DA SILVA CHAGAS, CNPS; Elpídio Inácio Fernades Filho; Carlos Antônio Oliveira Vieira; Carlos Ernesto Gonçalves Schaefer; SILVIO BARGE BHERING, CNPS; Marcio Rocha Francelino.pt_BR
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