Desertification or regreening? Multi-scale study of vegetation cover evolution in African Sahel from remote sensing data
Résumé
This article presents some of the results and conclusions of a PhD thesis entitled “Désertification ou reverdissement ? Étude multiscalaire de l’évolution du couvert végétal en Afrique Sahélienne à partir de données de télédétection » completed by the author (San Emeterio, 2015).
The purpose of this work was to shed some light on the land degradation debate in the African Sahel using remote sensing approaches. While this topic has been widely discussed during the last decades, there is still a lack of consensus on the best ways for assessing this phenomenon. The vegetation cover being closely related to land degradation its evolution has been frequently used to understand land dynamics.