Analysis vegetable coverage of the hydrographic microbasin riacho chafariz, through application of the Normalized Difference Vegetation Index (NDVI)

Abstract

The Brazilian semiarid is characterized as an area with significant modifications in its natural aspects, mostly caused by anthropic actions to meet specific needs. However, these changes, especially in the Caatinga vegetation, occur in a way that causes environmental impacts that compromise the socioeconomic development of this geographic space. In view of this, this work has the objective of analyzing the spatiotemporal configuration of the vegetation cover in the hydrographic basin of Riacho Chafariz, for the years of 1984 and 2016. For this, LANDSAT images 5 and 8, respectively, of the dates of 17.06 were used. 1984, 25.06.2016 close to the rainy season. As methodological procedures, radiometric corrections and Normalized Difference Vegetation Index (NDVI) were used as results. NDVI maps were obtained for the years studied, where it was possible to observe important spatiotemporal changes of the vegetation cover in the microbasin. Therefore, this work was to understand the dynamics of the vegetation cover in the microbasin. In addition to promoting the development of other environmental research in this geographical area.