Study of soil salinity from of geological, endorheic and anthropic origin in the Adrar region (Algeria), and their impacts on soil pollution
The results of the physical and chemical analysis of the soil and irrigation water (Waha Well, Baku - in the charouine area, in Adrar region showed that they contain high concentrations of cations (calcium 6.28 cmol.kg-1, sodium 0.52 cmol.kg-1, and magnesium 3.6 cmol.kg-1) and soluble anions (SO4- 16.34 cmol.kg-1 and Cl- anions 3.5 cmol/kg-1). These results indicate that the source of these ions is the parent rock, which primarily consists of dolomitic limestone (2Ca Mg (CO3)2) at the base of the Eocene era, rock salt, calcium carbonate, and gypsum (CaSO4 2H2O). It also showed that the water in the area is rich in Na+ and K+ ions, in addition to SO4 anions (2500 mg/L) and Cl- anions (1900 mg/L) due to the presence of evaporite deposits (NaCl and CaSO4). These ions caused soil pollution, leading to secondary salinization in particular.