La ville de N’Djamena, capitale de la République du Tchad connaît sans cesse, depuis sa création en 1900, une extension urbaine qui se traduit par une consommation démesurée de l’espace. Un état de fait rendu possible durant des décennies par différents facteurs antagonistes issus de l’absence…
We present an integrated information system needed to address the climate-water-migration-conflict nexus in the Congo Basin. It is based on a rigorous and multidisciplinary methodological approach that consists of designing appropriate tools for field surveys and data collection campaigns, data…
The climate-smart agriculture (CSA) concept reflects an ambition to improve the integration of agriculture development and climate responsiveness. CSA aims to achieve food security and broader development goals under a changing climate and increasing food demand. CSA initiatives can sustainably…
‘Over the past three decades hundreds of thousands of farmers in Burkina Faso and Niger, on the fringes of the Sahara Desert, have transformed large swathes of the region’s arid landscape into productive agricultural land, improving food security for about three million people. Once-denuded…
Drylands occupy more than 40% of the world’s land area and are home to some two billion people. This includes a disproportionate number of the world’s poorest people, who live in degraded and severely degraded landscapes. The United Nations Convention to Combat Desertification states on its…
Le foncier coutumier du Tchad est appréhendé par les chercheurs comme une réalité statique et n’est pas défini de manière cohérente par le législateur. Ses fondements à savoir la sacralité, le caractère collectif et inaliénable qui ressortent dans les différents travaux, sont restés les mêmes à…
The Re-Greening of the West African Sahel has attracted great interdisciplinary interest since it was originally detected in the mid-2000s. Studies have investigated vegetation patterns at regional scales using a time series of coarse resolution remote sensing analyses. Fewer have attempted to…
Desertification is defined as land degradation occurring in the global drylands. It is one of the global problems targeted under the Sustainable Development Goals (SDG 15). The aim of this article is to review the history of desertification and to evaluate the scientific evidence for…
The support plan for the Sahel is a regional approach to collectively address the root causes of disruptions such as poverty, migration and youth unemployment, climate change, insecurity, governance and institutional issues in the region. In this report an overview of the current situation for…
Located in the arid and semi-arid areas of West Africa, the Sahel has undergone profound changes over the past 50 years. Known for the prevalence of land degradation processes, the Sahel is suffering from the combined negative effects of population growth, human activities and climate…
Au cœur du Sahel tchadien à 12° 50’ N et 17° 30’ E, le lac Fitri est considéré comme « le lac Tchad en miniature » (Gillet, 1962 ; Caterina et Marzio, 2005). Très variable, cet hydrosystème endoréique est principalement alimenté par le bahr<a href="…
Le Tchad est considéré comme le pays le plus vulnérable au changement climatique. Une combinaison de pauvreté élevée, de conflits fréquents, de systèmes de gouvernance faibles, à laquelle s’ajoutent les risques de sécheresse et d’inondations, font que le pays est confronté à de nombreuses…