USE OF REMOTE SENSING AND DATA FROM THE MAPBIOMAS PROJECT TO ANALYZE DEFORESTATION IN THE CITY OF RIO LARGO/AL

Abstract

INTRODUCTION The contestation related to environmental issues has been highlighted in recent years in the relevance of the certification of environmental crises experienced on a global scale, resulting from the exploitation of the ecosystem. OBJECTIVE This paper applied geoprocessing technics to analyze areas of the Atlantic Forest region, using INCRA map, along with old aerial photos and Mapbiomas data. The study area is located in Rio Largo / AL, METHODOLOGY and the materials used were Photoshop, QGIS, Google Earth Engine and Libreofice. RESULT It was observed that in 1970 Rio Largo had a forest area of ​​9158.70 ha, 3548.18 ha in 1985, 3481.66 ha in 2000 and 3686.28 ha in 2018. The most critical period was between 1970 and 1985, in which decreased 61.26% of the forest area, as well as its importance and positive environmental influence for the city of Rio Largo / AL. To assess the environmental impact of the removal of the Atlantic Forest from Rio Largo, we calculated the extensions of the hydrographic network of the municipality that was unprotected, ie without Permanent Protection Area (APP). Between 1970 and 1985, 20.83 km of unprotected river network was observed, a decrease to 4.08 km (1985-2000) and an increase to 4.86 km between 2000 and 2018. CONCLUSION Geoprocessing and remote sensing data make it possible analysis of the environmental impact of the removal of forests. New works developed may expand the georeferenced database.