Mudanças espaciais do uso e cobertura da terra no distrito de Chókwé

Abstract

Floods, like other natural phenomena, cause, among other impacts, changes in land use and land cover in the affected region. The district of Chókwè, due to its physical and natural characteristics, was the most affected by the floods of the year 2000 in the Limpopo River basin, which caused changes in use and land cover. The present work intends to carry out a quantitative assessment of the spatial changes in land use and land cover in the district of Chókwè, from 1999 to 2001, from the digital interpretation of Landsat 7 ETM+ 167077 satellite images, with the help of techniques Remote Sensing and Geographic Information Systems. In addition to the Landsat 7 ETM+ 167077 satellite images, the following data were also used: According to the 1997 General Population and Housing Census, topographic maps at scale 1:250,000 and fieldwork was carried out. The study allowed us to verify that, although there were no significant changes in land use and land cover after the floods, in that district, the changes that occurred in agricultural, forest and marshy areas deserve to be highlighted. The results show that the areas most affected by the changes referred to in the previous paragraph are located in the northwestern strip, between the villages 25 de Setembro and Majajamela in the administrative post of Macarretane, and in the central-southeast strip, between the villages of Tlawene, and Chiaquelane. (TRADUÇÁO NOSSA)