Uso do sensoriamento remoto na análise espaço temporal do uso e ocupação do solo no trecho I do canal do sertão

Abstract

The adductor channel of the Alagoas backlands is a venture that since the beginning of the works has generated hope for the population of the Alagoas semiarid. The public power in his speech always presents him as a solution to the region's problems, especially in the fight against drought. The use of satellite images for environmental studies, such as land use, makes it possible to obtain information covering large territorial areas; extracted through techniques of analysis, processing and digital interpretation of images. With this background, this work takes shape when its purpose is to observe land use, comparing mainly the development of vegetation and the presence of urbanization along the stretch I of the backwoods channel that includes the municipality of Delmiro Gouveia, Pariconha and Água Branca. For this, scenes (orbit / point: 216/66) referring to the years 2008 and 2016 from Landsat 5 and Landsat 8 satellites were used. As a product it was noticed that there was no considerable variation in urbanization, water and agriculture; The classes that presented major changes are: undergrowth, dense vegetation and exposed soil, which resulted in an increase of exposed soil from 8.07% to 11.78% and a decrease in undergrowth that had 48.42 % in the year 2008 and decreased to 37.92% in the year 2016.