The East Aures presents an undeniable diversity of flora and fauna, however weather conditions and actual adverse anthropogenic, caused degradation of the physical environment, which have the form of a regression in the natural forest cover. The present work presents the results of a study concerning land use mapping and its spatial change detection using remote sensed images of Landsat (MSS 1972, TM 1987, TM 2002 and OLI 2015). The objective of this study is to determine the contribution of the satellite images in the detection of ground occupation changes and to pursuit in forms of forest degradation between the four dates in the area East Aures in Algerian. Our methodology is based on data analysis of fieldwork observation in the Southeast of Aures, thematic maps information allowed to identify four principle types of land use (Forests, Steppes, Cereal culture and Sandy soil). The obtained results show a high degradation of forest cover and the disappearance of sand formations in the study area. This study is a multi-temporal diagnosis, which has allowed us to identify at a time the degradation affecting vast semi-arid areas, causing regression of plant cover, and the pace of its development. The results of treatment of satellite images show that the forest cover, rangelands and soil are being the object of advance degradation. As part of this study, emphasis was placed on the processing of remotely sensed data over diachronic to monitor the evolution of the degradation in semi-arid zones.