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1. Desertification IN THE SAHARA DESERT Next By: Zacharie Fortin

2. People named the part of the desert that borders onto land the Sahel because it is so hot. D i d y o u k n o w ? The Sahara is the hottest place in the world, temperatures can be over 30 °C (86 °F) during the day. During the summer temperatures can exceed 50 °C (120 °F). Back Next

6. Farming

7. Forests

8. Land use

9. Technologies

11. Over farming & slash burn

12. Deforestation & denuding

13. Building cities and roads

14. Harmful chemicals

15. Unsustainable

17. ↑ E rosion

18. ↑ F loods

19. ↓ Soil fertility

20. ↓ N atural vegetation

22. ↑ M igration

23. ↑ S tarvation

24. ↑ P overty

25. Crisis

27. Equipment to do it

28. Raw materials to make it with

30. Some ordinary tools

31. Some raw materials

35. LA GRANDE MURAILLE VERTE Vision Plant a forest 15 km wide 7000 km long Install 1000s water retention basins along great green wall Problems Money is slow coming in Huge undertaking Labour intensive Many countries involved

41. TREE STARTER Vision Simple plastic container to grow a tree Many trees will make a forest Forest will stop desertification Problems Small scope Requires maintenance Relatively expensive

43. DUNE SANDSTONE WALLS Vision 6000 km wall to stop desertification Walls built by bacteria Walls provide housing and protection Problems Unproven idea Large scale and still expensive

45. Simulations

46. Assess the risk of desertification Anticipate and manage Back Next

48. Aerial photography

49. GPS

50. Smart software

51. Experts Problems More responding than preventing May require multiple solutions Only as good as your solution

52. CONCLUSION There are many promising solutions, but we have yet to see the outcome. Desertification in the Sahara is a massive problem in Africa.