ENVIRONMENTAL IMPACTS EVALUATION OF USE AND OCCUPATION OF LAND IN THE PERMANENT PRESERVATION AREA - PPA OF TWO URBAN LAGOONS

Abstract

This research has like main objective the Environmental Impact Evaluation of the use and occupation of the land in Permanent Preservation Areas – PPA of two urban lagoons, through the preparation and analysis of thematic maps created using Geographic Information System - GIS. The preparation of the maps was performed using ArcGIS software, version 9.3. The PPA’s polygons were defined according to the Forest Code, Resolution No. 303/2002 of CONAMA and the Municipal Decree No. 12,450/2008 and the occupations were classified and mapped according to CONAMA Resolution No. 369/2006, in 2004 and 2010. Subsequently a qualitative and quantitative assay of maps and data generated was performed. It was evaluated that the two lagoons used in the study: Opaia and Porangabussu have suffered environmental impacts due to the activities and occupations present in their areas. It was found that the city legislation does not meet the deliberations of Federal legislation concerning the delimitation of preservation areas, been less restrictive. It was concluded that the use of GIS subsidizes satisfactorily the assessment and diagnosis of the use and occupation of water ecosystems, allowing a qualitative and quantitative analysis.

Key-Words: Permanent Preservation Areas, Urban Lagoons, Environmental Impacts, GIS.