Reflexões metodológicas como subsídio para estudos ambientais baseados em Análise de Multicritérios

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This article represents a reflection as an aid for the environmental studies that use the multi criteria
analyses as a methodological procedure. The article discusses the state of the art of the geoprocessing for
environmental analyses, describing the process of data treatment so that it can compose layers of information
making the characterization and the analyses of environmental issues possible. It focuses on how to deal with
information in matricial files to combine variables. This study presents the analyses of the assembling and
construction phases in SIG. It talks about the multi criteria analyses procedure focusing on the role of Delphi
method as a way to maximize the consensus in order to define the criteria for spatial characterization and the
construction of predicted scenarios regarding some kind of spatial phenomenon. It approaches the application
procedures of the environmental analyses models.