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Desertification Geography 12 Alex Flaa

Desertification Geography 12 Alex Flaa. Natural Deserts. The Arctic: the arctic is a cold desert with very little precipitation. Sahara: the second largest desert in the world, covers most of Northern Africa.

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Desertification Geography 12 Alex Flaa

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  1. Desertification Geography 12 Alex Flaa

  2. Natural Deserts • The Arctic: the arctic is a cold desert with very little precipitation. • Sahara: the second largest desert in the world, covers most of Northern Africa. • Gobi: the largest desert region on Asia. • Namib: in Southern Africa.

  3. Definition of Desertification • The rapid depletion of plant life and the loss of topsoil at desert boundaries and in semiarid regions, usually caused by a combination of drought and the overexploitation of grasses and other vegetation by people.

  4. Historical Iraq

  5. The Advancing Sahara Desert • It has been suggested that the margins of the Sahara desert have been becoming more and more arid. The fluctuation of the margins are happening mostly because of the vegetation responding to the seasonal variation of rainfall

  6. Canadian Dust Bowl • The Canadian dust bowl in the thirties caused huge ecological and agricultural damage to the prairie lands. It was caused by a drought, and repetitive farming without rotation. Deep plowing in the top soil destroyed the grass which held the soil, and moisture in place so that the wind couldn’t blow it away and even during droughts.

  7. Current Problems • Australia: • Canada • U.S.A.

  8. Programs For Recovery

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