Dinâmica da ocupação do solo da bacia hidrográfica do Rio Xingu-MT

Abstract

The objective of this study was to quantify the changes in land use and occupation occurring over a period of 31 years in the years 1986, 1996, 2006 and 2017 in the Xingu - MT watershed in the state of Mato Grosso, using images from the Landsat 5 and 8 satellites. To this were applied digital processing techniques such as color combinations (false-color) and supervised classification. In addition, three thematic classes were defined land use, it being forest, hydrographic and disturbed area above the ground and closed - AA / SE / C. The results are presented in thematic maps showing the spatial distribution of the changes in the use and land cover of the Xingu River basin from 1986 to 2017. The evaluations allowed us to conclude that land use varied significantly in the analyzed period, with a 16% reduction in forest area between 1986 and 2017. The anthropogenic area, exposed and closed soil (AA / SE / C) 16.8% between 1986 and 2017. It was also verified that the major changes of transition between the classes of land use and occupation occurred in the period from 1996 to 2006, the period of greatest agricultural and livestock expansion in the State of Mato Grosso.