Temporal variation of the NDVI of the Itanhaém River Basin - São Paulo, Brazil Camila Cristina Macedo da Silva, Ursulla Pereira Souza, Fabio Giordano, Renan Braga Ribeiro

Abstract

 Remote sensing techniques for environmental studies have been increasingly used, as well as the availability of free satellite images has increased. The aim of the present study was to dynamically evaluate the vegetation cover in the Itanhaém River Basin, using remote sensing techniques to determine the Normalized Difference Vegetation Indices - NDVI. For this purpose, images obtained from the Landsat 8 satellite for the years 2013 and 2020 were used. The NDVI was calculated, thematic maps of its spatial distribution were drawn up and the percentage of its variation was estimated. The results indicated that during this seven-year period there were occasional reductions in vegetation close to the urban area, however the average NDVI for the studied area did not change.