Estudo da dinâmica de uso do solo em municípios do Cariri Ocidental, Paraíba, usando composição multiespectral ajustada.

Abstract

The ENSO (El Nino-South Oscillation) impacts, associated with human actions such deforestation and intensive cattle pasturage, increase the space-temporal environment degradation levels, and influence on social, economic, and environmental risks construction. This work presents a space-temporal dynamic study of the canopy and water resources degradation and land use of several cities of the semi-arid region of the Paraíba State, Brazil, through of TM/LANDSAT 5 and 7 products, to the years of 1984, 1987, 1996, 1999 and 2001. The digital analyses were made, using the “Adjusted Multispectral Composition” method. This paper show thematic maps of the evolution of both deforestation processes or changes of water area of the most important reservoirs of the region. From the obtained results, it was verified there is a important quantitative influence of the ENSO events on environmental degradation processes, and in the storage of water in reservoirs of all area of study. This evidence the high vulnerability of the people that living in this region to the ENSO events.