Abstract

GASPARINI, Kaio Allan Cruz et al. Geoprocessing techniques and remote sensing applied to the identification of land use conflicts in Seropédica, RJ. Floresta Ambient. [online]. 2013, vol.20, n.3, pp.296-306.  Epub Sep 27, 2013. ISSN 2179-8087.  https://doi.org/10.4322/floram.2013.030.

In this study, we evaluated the use and cover of land and compared data with the Permanent Preservation Areas (PPAs) to identify conflicts of land use in the municipality of Seropédica, Rio de Janeiro state, Brazil. We used two CBERS2 satellite scenes and supervised classification by the method of minimum distance. PPAs were defined with the aid of geotecnhology based on the Brazilian environmental legislation (law nº. 12.651/2012) (Brasil, 2012). PPA mapping was performed on a Digital Elevation Model (1:25.000) and planialtimetric mapping (1:10.000) was used for the drainage network. We identified 40.02 km² of PPAs, corresponding to 15.01% of the municipality studied. The Guandu River PPA was the largest (7.23%), while the urban lakes PPA was the smallest (0.04%). No PPAs of slope (<40°) or hill top (slope <25° with altitude <100 m) were identified in the municipality. The following data were found regarding the conflicts of land use: 58.1% exposed soil, 21.7% grassland, 7.8% sand/mining, and 3.9% urban area. Results indicate the efficiency of geotecnhology in municipal management.

Keywords : geoprocessing; Permanent Preservation Areas; Guandu River.

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