Cartografia do risco: uma análise da transformação da paisagem no litoral de João Pessoa - PB.

Abstract

The coast has suffered serious problems in relation to the disorderly development of coastal cities due to poor urban planning that consequently affects the environment. Moreover, the coast of Paraiba has a significant importance if we observe it in relation to the other regions. As a result, it suffers from the impacts of coastal erosion. This research aims to inspect the transformations resulting in the municipality of João Pessoa, through the analysis of cartographic products, to assist in preventive measures that managers are responsible for the execution of urban projects on the waterfront. For this, we try to delineate what can be understood by coastal areas and their dynamics, and how society contributes, in the sense of landscape transformations and in the natural dynamics of these same areas. Remote sensing techniques were used as a research method. For this study, images of landsat 5 and landsat 8 satellites, available by the USGS, were used. and photogrammetry obtained by the site of the city hall of João Pessoa named geo.joaopessoa. Supervised classification techniques were performed using the SCP (semi-automatic plugin) in the free software Qgis. The images generated and analyzed with the SCP plugin made it possible to make maps of supervised classifications indicating the spatial variability of the areas and the direction of the urban spot on the vegetation and sand range over these 35 years of study. The final result of this work proved the urban progress in areas of vegetation and consequently on the edge of João Pessoa.