There are 17 different land cover types shown in the image, including 11 natural vegetation types such as deciduous and evergreen forests, savannas, and wetlands.

BBC: How Earth's land is used

This is one of the largest protected areas in Africa at 48, 000sqkm, or 5% of the country, and its vast acacia-speckled savannas are the very definition of East African wilderness.

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As our early ancestors came down out of the trees and began moving out across the savannas, humans walked 10 to 12 miles a day to secure food.

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We were seized by a frenzy: we began to gallop across the continent, through the savannas and forests that had recovered the earth, burying cities and roads, obliterating all trace of what had been.

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Odzala is characterized by a rich variety of habitats, including primary rain forest with a closed canopy (e.g. with Entandrophragma utile, E. candollei and E. cylindricum) and open understorey layer, forests dominated by dense formations of Marantaceae, forest clearings and savannas on the hilltops (e.g. with Hymenocardia acida, Annona arenaria or Hyparrhenia diplandra).

UNESCO: Biosphere Reserve Information

The GGW was conceived by the 11 countries located along the southern border of the Sahara with the goal of containing the desertification of the Sahel zone, which is the transition between the Sahara in the north and the African savannas in the south, and includes parts of the countries of Senegal, Mauritania, Mali, Burkina Faso, Algeria, Niger, Nigeria, Chad, Sudan, Somalia, Ethiopia and Eritrea.

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