Análise da Correlação do Índice de Vegetação (NDVI) e precipitação do alto curso do Rio Paraíba

Abstract

Much is discussed about the importance of watersheds, since these territorial management units are part of a systemic body, whose integration of its components share the physical and chemical disturbances related to the input and output of energy in its system. In the area where the watersheds are located, analogous to the study area covered in this work, which is the Paraíba Upper Course sub-basin, located in the Borborema mesoregion and the Western and Eastern Cariris microregion, human activities are developed, urban regions. , industrial areas, agricultural crops, preservation areas, among others. It is well known that over the last decades, the use of geotechnologies focused on integrated studies of environmental elements, especially studies in which vegetation emerges as a fundamental element within a watershed system, has intensified. Studies on the vegetation of a region are of fundamental importance for the understanding of local dynamics, since it, when supervised, helps in understanding the behavior of vegetation cover, constituting a natural indicator that serves as the basis for several related research. to this tonic. Thus, the project of this monograph has as its main objective to analyze the correlation between vegetation dynamics and precipitation of the Upper Course region of the Paraíba River, so that it is possible to visualize the period of greatest influence of precipitation on the alteration of the indices. vegetation. The results obtained here revealed that the correlation between NDVI indices and precipitation occur in different ways, depending on the accumulation of days. The responses of the best correlations, which were those with 90 days to 90 days accumulated precipitation. This type of study shows the importance of environmental analysis in works of a geographical nature, since having an understanding of vegetative behavior, there may later be support in planning, land management, land management and public policies.