TYPOLOGY AND PHYSICOCHEMICAL CHARACTERIZATION OF THE MAIN SOILS OF THE KAWAR OASES (NORTH-EASTERN NIGER)

The Kawar Oasis system constitutes a unique ecosystem located between the Tenere erg and the Bilma erg. The oases mainly occupied by date palms are spread out to the east, along the sandstone cliff, of Tertiary age. They support the economic activities of local populations such as agriculture and artisanal salt exploitation. The aim of the present study is on the one hand to categorize these oases and on the other hand to characterize these soils for