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This paper aims to investigate the suitability of land use in a watershed by using the multicriteria decision analysis processing in a geographic information system (GIS) - 15.0 Idrisi Andes. The data selection and acquisition was based in a digital map product adopted in a 1:50000 scale; in a soil use watershed map, and in a Landsat 7 ETM + satellite image. The criteria set was based on some restriction to the farm management: permanent preservation areas, main roads, land use, slope and vegetation cover. This conflict was been resolved by applying the multi-criteria analysis using a weighting procedure such as the analytical hierarchy process (AHP) and the linear weighting combination (FTA), in a GIS processing. The results showed that the environmental shows agricultural and environmental characteristics, mainly due to the large extension of land available for agricultural use. KEYWORDS: Environmental planning, analytical hierarchy process, linear weighting combination. DEFINICAO DE AREAS PRIORITARIAS PARA ADEQUACAO DO USO DAS TERRAS POR MEIO DA ANALISE MULTICRITERIAL RESUMO: Esse trabalho objetivou a analise da adequacao do uso de terras de uma microbacia pelo metodo de analise de multicriterios atraves do Sistema de Informacao Geografico (SIG) – Idrisi Andes 15.0, tendo como base cartografica digital em escala 1:50000; o mapa do uso da terra da microbacia e imagens do satelite Landsat 7 ETM+. Os criterios usaram (restricoes para a exploracao agricola): areas de preservacao permanentes, rede de estrada, uso da terra, declividade e cobertura vegetal. Para a analise de multicriterios, os metodos usados foram Processo de Hierarquia Analitico (AHP) e combinacao linear ponderada (ACL), na plataforma de processamentoem SIG. Osresultados permitiram concluir que o ambiente apresenta caracteristicas agricolas e ambientais devido, principalmente, a ampla extensao de terra disponivel para uso agricola. PALAVRAS-CHAVE: Planejamento ambiental, Processo de Hierarquia Analitico, combinacao linear ponderada.

DEFINITION OF PRIORITY AREAS FOR FITNESS USE OF LAND THROUGH THE ANALYSIS MULTICRITERIA