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The forest vegetation of Djebel Boutaleb is experiencing degradation in its entirety under the effect of burly anthropogenic pressure and climatic risks. Hence, the vegetation cover requires analyzes to conserve and protect it with a better knowledge of the composition and the vegetation dynamics of this ecosystem. For that, spatio-temporal studies of vegetation evolution have been applied using multitemporal Landsat imagery. An NDVI classification technique was used to generate thematic maps, with 4 major classes. The use of remote sensing data and geographic information system (GIS) has made it possible to detect important changes in vegetation cover over 35 years. The results showed that between 1984 and 2019, the overall estimation of the evolution of the vegetation of Djebel Boutaleb is positive; with a negligible strong gain estimated 0.17% and an insignificant progression estimated at 72.67%. [ABSTRACT FROM AUTHOR]

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Center of cutaneous leishmaniasis, the Setif steppes is currently experiencing a significant upsurge in this endemic and parasitic disease. To treat themselves the majority of the rural population has resorted mainly to toxic plants known for their magical and healing properties. The present study focused on the plant species potentially used in the treatment of these diseases. The floristic inventory identified six vascular species, including Peganum harmala L., Carlina gummifera (L.) Less., Deverra scoparia Coss. and two cryptogam species of scaly lichens (Lecanora esculenta Evernsmann and Rhizoplaca melanophtalma (DC.) Leuckert). These taxes constitute the most natural and effective antileishmanian remedy in the rural community. For the therapeutic route, our follow-up surveys are based on participatory observation, the knowledge held by the healers, the attitude of the users, the practices and the treatment time. These have enabled us to refine our knowledge and perception of the application of traditional herbal treatment, which is of great importance at the regional level where the nomadic and sedentary populations still have knowledge of leishmanicide species. It turns out that more in-depth scientific research will have to develop this empirical knowledge for a better management and preservation of this floristic heritage by fighting against this epidemiology which prevails in Algeria. [ABSTRACT FROM AUTHOR]