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A identificacao e mapeamento dos solos servem como subsidio para planejamentos agricolas, levantamentos do uso da terra, estudos de terras para irrigacao, estudos de preservacao, analise e recuperacao ambientais, predicao de desastres naturais como o monitoramento de processos erosivos, dentre outros. Nesse sentido, os levantamentos e avaliacoes de solo, para fins agricolas ou nao, ganham importância, pois atraves deles e possivel conhecer as propriedades desse recurso natural, permitindo sua utilizacao de forma consciente e adequada. O uso de sistemas de informacoes geograficas tem introduzido novos metodos para o levantamento e mapeamento de solos, por meio de modelagens, a partir da utilizacao de mapas tematicos basicos e modelos numericos de terreno ou modelos digitais de elevacao, que possibilitam, principalmente, a compreensao das relacoes entre a paisagem e as classes de solo. Assim, o objetivo deste trabalho foi a realizacao do levantamento e mapeamento dos solos do municipio de Inconfidentes - MG, utilizando tecnicas de geoprocessamento, e a classificacao pedologica ate o quarto nivel categorico atraves da generalizacao, a partir da descricao morfologica e determinacoes analiticas de perfis de solos representativos. Foi realizada a caracterizacao da area de estudos, a aquisicao e tratamento de dados cartograficos. A descricao morfologica dos perfis foi realizada em pontos previamente definidos, representativos das distintas classes de solo do municipio. As analises fisico-quimicas foram realizadas em todas as amostras dos horizontes dos perfis de solos coletados em campo. A generalizacao do levantamento de solos foi elaborada atraves do processamento dos dados cartograficos e obtidos em campo, com a utilizacao do software ArGIS 9.3. O mapeamento pedologico do municipio foi entao o resultado da integracao e correlacao dos dados altimetricos, da declividade, da rede de drenagem, do canal fluvial, do relevo e da litologia, associados com a caracterizacao feita em campo e as determinacoes analiticas. Como resultado, foi possivel mapear as areas de ocorrencia de Latossolos, Gleissolos e Cambissolos, as tres ordens de solos mais representativos do municipio, classificando-os ate o quarto nivel categorico. O uso das ferramentas de geotecnologia se mostrou muito util para a caracterizacao das classes pedologicas e posterior generalizacao, uma vez que atraves delas foi possivel inferir as condicoes ambientais de formacao dos solos e integra-los com dados de campo e analises laboratoriais. ABSTRACT The identification and mapping of soils serve as subsidy for agricultural planning, land use surveys, land studies for irrigation, preservation studies, environmental analysis and recovery, prediction of natural disasters such as monitoring erosion, among others. In this sense, soil surveys and assessments, for agricultural purposes or not, become important because through them you can know the properties of this natural resource, allowing its use consciously and appropriately. The use of geographic information systems has introduced new methods to survey and soil mapping, through modeling, from the use of basic thematic maps and numerical terrain models and digital elevation models, which enable, especially, understanding the relationship between the landscape and the soil classes. The objective of this work was the completion of the survey and mapping of soils of city of Inconfidentes - MG, using geoprocessing techniques, and the pedological classification until the fourth categorical level by generalising from the morphological description and analytical profiles determinations representative soil. It was carried out to characterize their field of study, the acquisition and processing of cartographic data. The morphological description of the profiles was held in fixed locations, representative of the different soil classes of the municipality. The physicochemical analyzes were performed on all samples from the horizons of soil profiles collected in the field. Widespread soil survey was prepared by processing the cartographic data obtained in the field and, with the use of ArGIS 9.3 software. The pedological mapping of the municipality was then the result of the integration and correlation of altimetry data, the slope, the drainage network, the river channel, relief and lithology associated with the characterization made in the field and the analytical determinations. As a result, it was possible to map the areas of occurrence of Ferrasols, Cambisols and Gleysols, the three most representative soils of the municipality orders, sorting them until the fourth categorical level. The use of geotechnology tools proved very useful for the characterization of soil classes and subsequent generalization, since through them it was possible to infer the environmental conditions of soil formation and integrate them with field data and laboratory analysis. Keywords: Cambisols, Gleysols, Ferrasols, classification, hillslope.

Geoprocessamento Aplicado ao Levantamento de Solos no Município de Inconfidentes-MG (GIS Applied to the Soil Survey in the City of Inconfidentes-MG)