Détection des changements au niveau d’un couvert forestier en milieu semi-aride entre 1984–2009: Cas de la forêt de Senalba Chergui de Djelfa (Algérie)

Contribution of the prophylactic campaigns of sheep flocks in preserving animal health in the Wilaya of Djelfa

“…It is characterized by a typical Mediterranean climate with a cold winter and a warm summer, giving it a semi-arid to arid bioclimatic stage with a continental shade (Djeddaoui et al 2017, Guesmi et al 2017. The wilaya vegetation cover belongs to the Mediterranean vegetation layer of semi-arid to arid areas characterized by precipitation between 150 mm and 300 mm per year (Khader 2014, Mouissa et al 2018. Pastoralism is the main economic base of the region occupying a population representing 37.7% of the total population of the wilaya of Djelfa (Kanoun 2015).…”

“…It is clear from the graphical representation (see Figure 4 and Table 3) that these data are inversely linked; something which was confirmed by the correlation test where we obtained a correlation coefficient equal to -0.07. In semi-arid steppe environments, precipitation is the limiting factor that controls the spatial distribution of vegetation (Verstraete et al 2008, Amghar et al 2016, Mouissa et al 2018) and involved in the formation and evolution of soils (Boutelli 2012).…”