Use and occupation of soil in the city of Cristal/RS

Abstract

The knowledge of the use and occupation of the soil of a municipality is of extreme importance for the municipal and environmental planning, with the help of the geotechnologies one can have more technical security in the decision making regarding the processes to be approved and also in the elaboration of projects for its own public management. In this article the object of research was the municipality of Cristal, a region of mining activities, on the banks of the Camaquã River, which presents a series of irregular occupations. In which the objective was the mapping of the uses and occupations of the soil and the correlation with the natural resources of the municipality. In order to do so, we used the image of the MUX sensor of the CBERS 4 platform in the free MultiSpech programs for classification, analysis and Quantum GIS (QGIS) for the construction of the use map and soil cover of the Municipality of Cristal / RS. As a result of the MaxVer classification we can observe that the results were significant, being 66.14% of the area of ​​the municipality identified for the field / agiculture class, 18.80% for the native vegetation class, 6.18% identified as the Class Exposed soil, 6.03% composed of exotic vegetation and 2.83% as water.