The São Gonçalo/Baixada de Sousa region is one of the main agricultural centers of the State of Paraíba. The inadequate management of the lands and irrigation has been responsible for the reduction of the agriculture income and for the soil degradation by salt. In the mitigation of the agricultural vulnerabilities, geoprocessing is consolidated as a powerful tool in the study and monitoring of the environment, aiming at sustainable development with risk reduction of disasters. The objective of this work was the use of TM/Landsat-5 images (visual analysis and digital processing), superficial measures of temperatures and a GIS in the identification and mapping of salt affected soils. The results showed that along the last years the area of soil degradation by salt had increased and today approximately 39.48% of the studied area presents salt affected soils.
salinity; remote sensing; thermometry; GIS
