Our study area is a transect that connects the wilaya of Souk-Ahras and the wilaya of Tebessa where it is formed by a mountainous massif site that includes a very important vegetal diversity. This area is located in the North East of Algeria where it prevails a Mediterranean climate, characterized by a temperature gradient that increases from North to South, whose average annual rainfall evolves in the opposite direction of the temperature. To identify the diversity of soils in this region we made a qualitative characterization of soils that integrate the axis between the north and south of the wilaya of Souk-Ahras and Tebessa, we chose six stations representative of the area in question, several physico-chemical parameters were studied such as, the granulometry, hydrogen potential, electrical conductivity, hygroscopic moisture, organic matter and total limestone to define and enhance the quality and richness of the soil of this region. The physicochemical characterization reveals a diversity of the nature and quality of soils in this mountainous region, and an adequacy between the soil, the climatic environment and the type of plant cover whatever the region.

Traditional medicine still remains the main recourse of the majority of populations in developing countries. This medicine uses substances of animal, mineral and especially vegetable origin. Medicinal plants have always been part of the daily life of man since he uses them to feed himself, to cure himself and sometimes in his religious rites. Different traditional plants are used in the treatment of cardiovascular diseases such as hypercholesterolemia, atherosclerosis, hypertension and their associated factors (diabetes, obesity, etc.). The roots and leaves of these plants are used in herbal tea in the treatment of these diseases. Traditional medicine, which is based on traditional knowledge, deserves to be promoted. This valorization requires the availability of improved traditional medicines, that is to say effective, with proven safety and with precise posology. This study is made on the effect of some medicinal plants on some cardiovascular diseases, liver diseases, and cholesterol in the blood as well as the blood pressure. On the other hand a kind of general description on some cardiovascular diseases; hypercholesterolemia and arterial hypertension, as well as the risk factors like obesity, we quote some medicinal plants indicated against these diseases.