Income
Studies conducted in the region (Sghaier et al., 2003; Sghaier and Ouessar, 2006) showed that the activities of the households providing the main sources of incomes are respectively paid labour (38%), tertiary sector (22%) and agriculture (17%). This diversification of incomes is confirmed by the predominance of the households that make recourse to several sources of income (65.4 %) whereas 34.6 % only have only one source of income. Average income of the households is estimated at 2992 DT/year with a standard deviation of 2784 DT/year; a minimum of 300 DT/year and a maximum of 22,000 DT/year. Apparent disparities between the various counties are noticed. In fact, the average annual family incomes are 3337 DT in Mareth. 2906 DT in Beni Khedache. 2764 DT in Northern Médenine and 2684 DT in Sidi Makhlouf.