This study aims to highlight ecological parameters, dues to interactions between specific biodiversity, biotope and human practices, at various levels of landscapes in the Bouna region. We hope to contribute to choice of ecological zonings and thus to access suitable management practices for biodiverty. The hypothesis is that, in this region, ecological parameters are higher in Massifs and mountains. Cartography of landscapes and statistics description of vegetation parameters on the scale of the large « natural regions », thus identified, give high values of biophysical indicators in Inselbergs and mountain chains region, hills with rocks on top region and in certain sectors of tabular mountains and Croups with ferricrete crusts on top where they plead for conservation of hotpost biodiversity.

Each society has its own way of relating, appropriating and using the natural environment. This study falls within context of the problem of management and research for a balance between the natural environment and peasant logic specific to agrarian societies in their relations with the environment. The study is based on integrated analysis of natural environment using analysis of HAUTS-MONTS INC-CIV aerial images, at the scale of 1: 50000, and Copenicus Maxar-technology 2020 scene. We can therefore seek to know how - from the anthropic which is observed through the analysis of agrarian landscape and agricultural occupation of the ground - the rural geographical space of the Lobi can be determined by natural constraints, their rationalities internal and their ideologies ? The objective is to situate functioning of geosystems at the scale of landscape segments, where all the ideas of agricultural development and the challenges of sustainable development are expressed. The study starts from hypothesis of agricultural use of the slopes where lateral (colluvial) dynamics are exerted, consequences of thicker soils that are easier to work. Results indicate that among Lobi farmers, subsistence and market strategies dominated by the preponderance of early yam, Dioscorea cayenensis. Dry cereals come next. It was therefore necessary to use, in an optimal way, land resources used as best as possible for these essential foodstuffs: ferrallitic and ferruginous soils more or less sandy in slope position, easy to work and suitable for all the cultivated crops. We then retain the adaptability to soils of agricultural techniques and intervention of religious ideologies. These establish on the slopes the environments likely, by the pedological conditions offered, to accommodate all the crops in a single block and thus meet certain mythical requirements.