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Paysages forestiers et agro‐forestiers en changement dans la partie septentrionale des Rivières du Sud (Afrique de l'Ouest)

Abstract : The West African littoral strip between the Delta of Sine‐Saloum and the Rio Mansôa corresponds to the transition from sudanian to guinean domains. Three criteria differentiate the wooded landscapes in this area : latitudinal climatic gradient, alternate occurrences of low plateaux and tidal mud flats, numerous practises and uses of local rural societies. The last have such an impact on the landscape that the very use of the term forest may be questioned. In most cases, these landscapes can be reffered to an agriforest where trees have voluntarily been kept in number. In other cases, the lack of forestal gestion does not allow us to use the term of forest. West African forests and agriforests have been notably changing for the last decades. These changes have hardly touched the botanical composition of vegetation, although such a statement would need complementary studies. These changes have been studied quantitatively as well as qualitatively through remote sensing, showing that the difference can be noticed at microregional scale. The study of a few village territories help us reconstruct landscape trajectories : the sequence of very dry years during the 1968‐1994 period often played the part of activating factor, but social ans economical changes have been the decisive factor in deeply modifying the practises. This cannot be a priori interpreted in the negative way of a degradation of the vegetal cover.
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  • HAL Id : hal-01282202, version 1


Julien Andrieu, Frédéric Alexandre. Paysages forestiers et agro‐forestiers en changement dans la partie septentrionale des Rivières du Sud (Afrique de l'Ouest). Des milieux aux territoires forestiers , 2010, 978-2-84832-122-6. ⟨hal-01282202⟩



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