Geospatial analysis in assessing environmental sustainability levels

Abstract

Geospatial analyses are becoming fundamentally important on a global scale for the sake of sustainability. The overall objective of this research is to analyze geospatial data, using images from Landsat 2, 5, 7, and 8 satellites from 1975 to 2020, based on changes in land use, and from Sentinel-3B OLCI (Ocean Land Color Instrument) from 2019 to 2021, focusing on the evaluation of water resources based on water turbidity levels (TSM_NN), suspended particle density (ADG_443_NN), and chlorophyll-a presence (CHL_NN), aiming to temporally monitor the effectiveness of current legislation on sustainability standards in a watershed region dedicated to agricultural production, located in southern Brazil. Satellite images from Sentinel-3B OLCI between 2019 and 2021 showed that the waters of the Capinguí Dam have high concentrations of ADG_443_NN (3,830 m-1), CHL_NN (20,290 (mg m-3)) and TSM_NN (100 (gm -3)), capable of endangering the health of the population and the hydrographic preservation.