The cedar of the Atlas settles in Morocco on different types of substrates. However, the quality and nature of the latter have an effect on the reforestation and natural regeneration of the cedar ecosystem. This study investigated the water, physical and chemical characteristics of two substrates (basalt and limestone) representative of cedar soil in the Central Middle Atlas region (Azrou forest - Ait Youssi Amkla forest).
The results showed that substrates tested showed differences for all the properties (water, physical and chemical). These characteristics make it possible to prevent the behavior of each soil vis-à-vis the aeration of the plants root system as well as the availability of water and nutrients.
The basaltic substrate of the Azrou forest has good drainage, good aeration, high water retention capacity, rich organic matter and nutrients compared to the limestone substrate of the Ait Youssi Amkla forest.