Action anthropique ; Biogéographie ; Ecologie ; Ecosystème ; Effet de serre ; Environnement global ; Géographie physique ; Savane ; Variation climatique ; Zone intertropicale
The savannas, which lie in the zones between the humid forests and the desert margins, are likely to be the most sensitive ecosystems to global environmental changes incident on such phenomena as global warming and ozone depletion. It is the purpose