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The Sahel is one of the most investigated areas in Africa because of its highly complex and sensitive human and environmental dynamics. The Sahel is a transition zone between the pure desert of Sahara and the woody savanna of the Sudanean zone further south.
- Cheikh Mbow
- 2017
Nov 1, 2011 · This paper shows that this approach may lead to a bias in the interpretation of remote sensing images and that further work is required to clarify if wide-spread ecosystem degradation has occurred in the Sahel.
- L.G. Hein, N. de Ridder, P. Hiernaux, R. Leemans, A.J.W. de Wit, M.E. Schaepman
- 2011
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The top images show the vegetation index while the lower images show rainfall during the same period. The Sahara Desert paints a white streak along the top of the vegetation index image, indicating that few or no plants were growing.
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Within some 1,000 km, the environment transitions from the hyper-arid Sahara Desert to forests with over 1,200 mm of rainfall per year. The Sahel region of West Africa is a semi-arid expanse of grassland, shrubs, and small, thorny trees lying just south of the Sahara.
Browse Getty Images' premium collection of high-quality, authentic Sahel Region Of Africa stock photos, royalty-free images, and pictures. Sahel Region Of Africa stock photos are available in a variety of sizes and formats to fit your needs.
Mar 5, 2001 · The Sahel, or Sahelian Zone, lies south of the Sahara Desert in North Africa. This dry savanna environment is particularly prone to devastating drought years. Typically, several years of abnormally low rainfall alternate with several successive years of average or higher-than-average rainfall.
