Space-temporal analysis of the dynamics of land coverage and use in the surroundings of the Rio de Janeiro Basin - Bahia/Brazil from biophysical parameters
DOI:
https://doi.org/10.6008/CBPC2179-6858.2022.009.0003Keywords:
Remote sensing, Biophysical parameters, Spatio-temporal dynamicsAbstract
Changes in land use and cover have been causing serious environmental problems in the savannah systems in the World and specifically in the Cerrado of Brazil. Studies in watersheds by remote sensing can provide information that allows detecting and evaluating changes in the land cover and use. This work aims to analyze the space-time dynamics of the Rio de Janeiro-BA watershed through the biophysical parameters NDVI (Normalized Difference Vegetation Indices), SAVI (Soil-adjusted Vegetation Indices), LAI (Leaf Area Index) and TS (Surface Temperature), estimated through spectral responses of Landsat-5 TM and Landsat-8 OLI/TIR satellite images, between the years 1984 to 2017. The results obtained to portray the various uses of land cover, highlighting the presence of native vegetation, water bodies, exposed soil, rainfed and irrigated agriculture. The relationship between energy flows in the Cerrado of the Rio de Janeiro Basin BA/Brazil proved to be representative compared to the vegetation variation in the analyzed period, favoring local and regional environmental and climatic analysis. The variation of available water in the environment, characterized a strong relationship of the seasonality in the data, reflecting directly with the changes of the indices.
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