The flora and vegetation of ecosystems are influenced by biotic and abiotic factors that determine their composition, diversity and overall condition. These factors include determining factors that have a greater impact on flora and vegetation. The objective of this study is to assess the impacts of abiotic factors on the flora and vegetation of inselbergs in Burkina Faso and determine which factors have the greatest impact. For this purpose, stratified and random sampling was adopted and data were collected in plots of 900 m² for the woody stratum and 100 m² for the herbaceous stratum. For the inselberg micro-habitats, the plot size varied between 0.25 m² and 9 m². All species were recorded with their abundance-dominance coefficient.

The mean number of species, the Shannon diversity index and the Piélou equitability index varied significantly with climatic gradient and topography (p

Climatic gradient, Ecosystem, Floristic diversity, Rock outcrops, Soil, Topography