WHEN TWO OPPOSING ECOSYSTEM WET AND DRY BIND BY EROSION PHENOMENON? CASE OF THE SAHARA DESERT AND THE AMAZON FOREST
Journal Title: Larhyss Journal - Year 2017, Vol 31, Issue 31
Abstract
There is a relationship between two opposing ecosystems: one wet and the other dry: the Sahara desert and the Amazonian forest. The amount of phosphorus lost by water erosion is recovered by wind erosion. Based on the satellite images, three dust export zones were identified. The area of Bodélé (Chad); an area of strong wind erosion generated by the great Venturi of Bourkou. The areas of collar formed by the bypass of mega-obstacles: Hoggar-Tassili (Algeria) by the aeolian flows coming from Libya. Under the effect of the Aïr (Niger) massif, two cervical areas form on either side of the mega-obstacle by the subdivision into two branches of the Aeolian currents coming from Libya. The Sahara exports the phosphorus deficit by clouds of dust flying over the Atlantic to reach the Amazonian forest.
Authors and Affiliations
REMINI BOUALEM| Département des Sciences de l’Eau et Environnement, Faculté de Technologie, Université Blida 1, Blida 9000, Algérie
Keywords
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