CONFLICT OF LAND USE IN PERMANENT PRESERVATION AREAS OF THE PAJEU RIVER BASIN-PE, BRAZIL

Carlos Tiago A. Rodrigues

Abstract


According to the Brazilian forest code, Permanent Preservation Areas (APP) should be protected and covered by native vegetation. However, most river basins found in these areas have been altered. The objective of the present study was to map the PPAs and identify conflicts of use in the Pajeú river basin, PE, Brazil. With the aid of a geographic information system, five classes of APPs were defined: hill tops (APP-1), slopes greater than 45° (APP-2), areas surroundings of springs (APP-3), areas surrounding watercourses (APP-4), and areas surrounding lakes (APP-5). Mapping of land use was performed using images from the Landsat 5 satellite of the year 2010, via supervised classification. The Pajeú basin presents 1,260.92 km² of APPs, corresponding to 7.46% of the basin area (16,886.22 km²). Of the APP areas defined, only 33.67% presented misuse, consisting of pasture (27.94%), agriculture (4.84%), exposed soil (0.75%) and urban areas (0.14 %). It can be concluded that in all APP classes mapped, 66.33% were unchanged, which is consistent with the environmental regulations.


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DOI: https://doi.org/10.29150/jhrs.v3i3.22696

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