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Forest-savanna boundary in middle Ivory Coast. An investigation concerning geomorphology-soils-vegetation relations has been undertaken in order to determine correlations between distribution of vegetable formations and environmental factors, while in the same time human investigations were trying to define man's relationship with natural environment. Various observations seem to prove that distribution of Forest-Savanna mosaic, in the zone of study, resulted mainly from the preponderance of geomorphological evolution and accordingly of the soils which are deriving from it, over the distribution of vegetable formations. On the other hand, the present progression of forest, which has been observed in many points in spite of influence of bush fire, is partly dependent on the substratum : unfavourable edaphic characters of savanna soils are putting off dynamism.

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