Cabbage

Between southern boundary arid and northern boundary river area. Rainfall = 200-400 mm. Temperature = 15 to 45 ° C depending on the seasons. Seasons = Wintering (rainy season) from June to September dry season (October to May). = brown soil and sandy dunes with a low water retention and a low organic matter content; depressions dune silty clay; appearance dunes following the degradation of vegetation (especially western area)

Strip along lefleuve Senegal Moughataa (Department) Keur Macène (Southwest Trarza) in Gouraye (South East Guidimakha). = 350-450mm rainfall. Temperature = 15-45 ° C depending on the seasons. = Wintering seasons (rainy season) from June to September and dry season (October to May). Soils = clayey or silty (Hydromorphic); Brown and sandy (low water retention)

It extends from the north to the isohyet 150 mm without the marine band and covers nearly 80% of the national territory. Rainfall = <100 mm per year, rarely reaches 150 mm in the northern parts of Assaba and Hodhs. = Wintering seasons (rainy season from July to September) and dry season from October to June Temperature = 10 to 47 ° c. = gross soil desert soils (ablation and intake) dominated by sand ergs. Relative humidity = 28-43%. Water Resources = dune and alluvial aquifers wadis

It covers a narrow coastal strip (50 km wide) and extends from Nouadhibou to the mouth of the Senegal River. Seasons: rainy from August to September and saisonsèche (October-July) .Températures = 10-35 ° C. Rainfall = 0-50 mm, rarely reaches 100 mm despite the rain and dew winter (December-January). sSols = sandy halomorphic