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Abstract
The Tangier-Tetouan-Al Hoceima region located in the north-westof Morocco has known, in recent decades, various territorydevelopment works which have certainly had an impact on the landscape and the ecosystem of the region. The region has hosted large-scale infrastructure such as the Tanger Med port on the edge of the Strait of Gibraltar, the high-speed train line connecting Tangier to Casablanca, road networks, dams, etc. The aim of this article is to map changes in the region’s landscape through diachronic land coveranalysis. This study is carried out completely free of charge thanks not only to free access to optical satellite images but also to free processing software offered in parallel by space remote sensing agencies. The choice of optical data fell on the Landsat 7-ETM + satellite images acquired in 2002 and those captured by Landsat 8-OLI in 2016. After having provided the necessary preprocessing for these images, a supervised classification was carried out usingthe "Random Forest" classifierwell known for its efficiency and gives very satisfactory classification results. After validating the classification results via a qualitative evaluation, a map taking stock of the changes was obtained by the difference of the two land covermaps corresponding to the two dates in the interval of the period considered in the study.