Análise da redução de área superficial do lago Dom Helvécio, Minas Gerais, Brasil e sua relação com a tendência pluviométrica na região

Abstract

The climate change associated impacts will be sensed worldwide with profound implications for the human population. The sustainability of civilization have been impacted due to anomalous periods of climate and changes in land use. Nowadays, weather forecasts and seasonal weather forecasts are becoming increasingly accurate, as a result of advances in remote sensing, including satellites, science improvements, and increases in computing power. This manuscript aimed to perform spatio-temporal analysis of the surface area of Dom Helvécio Lake, by using data from satellite images associated with geoprocessing techniques. In order to allow inferences about the influence of rainfall regimes, the Mann-Kendall test was also used to evaluate precipitation trends in the region. As an GIS analysis result, a reduction of about 38 ha area over these 14 years has been identified. The Mann-Kendall test result indicated a tendency for significant precipitation to decrease by 87%, since the p-value is less than 0.1282. Given the importance of the theme, the study demonstrated that climate change can be considered in watershed management and public policy making, as the population must adapt to its effects.