Analise multitemporal das matas ciliares do Município de Ipanguaçu-RN pelo uso do processamento digital de imagens

Abstract

The present study has the purpose of analyzing in a multitemporal way the area of riparian forest in the municipality of Ipanguaçu / RN and characterize the changes in land use, along the main course of the Piranhas-Açu river, a meso region of the Açu Valley, through images of the Landsat 4-5, Landsat 8 and sentinel-2 satellites to detect deforested areas of the city of Ipanguaçu, in the interior of Rio Grande do Norte. The municipality is bordered by piranhas Açu river, main river of the Açu Valley, the same one has diverse uses and potentialities. In general, the river has a predominance of use for human supply and irrigation. It is worrying how the area of riparian forest is being used in this region, since the Permanent Preservation Areas are protected by law and are often inadequately used by irrigators of the municipalities that make up the region of the Açu Valley. Remote sensing has been widely used for the monitoring of vegetation cover and can subsidize actions aimed at the establishment of sustainable development practices. The image processing is done through tools made available by the program arcMap10.5 seeking to present images of the years 2010, 1014, 2016 and 2018. The thematic maps produced of the processed images allowed detecting and separating the vegetation cover of the studied area into different classes. The information obtained from the vegetation cover in both study periods showed the vegetation changes in the different areas of the region, based on the results of the vegetation indexes studied.