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Water Scarcity & Desertification

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Water Scarcity & Desertification. Photo credit: Natphotos/Getty Images, National Geographic. Africa’s Namib Desert. Essential Questions:. What is desertification? Is there a connection between the scarcity of water and desertification? Can we eliminate/reduce desertification?

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water scarcity desertification

Water Scarcity & Desertification

Photo credit: Natphotos/Getty Images, National Geographic.

Africa’s Namib Desert

© The GlobalEd 2 Project

essential questions
Essential Questions:
  • What is desertification?
  • Is there a connection between the scarcity of water and desertification?
  • Can we eliminate/reduce desertification?
  • Why should I care about desertification, anyway?

© The GlobalEd 2 Project

enduring understandings
Enduring Understandings:
  • Desertification occurs when the groundwater table decreases to such a level that it drains an arid or semiarid land of its life-supporting capabilities-
  • Salt accumulation in the topsoil
  • Decrease in surface water
  • Increased erosion
  • Disappearance of native vegetation

© The GlobalEd 2 Project

enduring understandings continued
Enduring Understandings:(continued)
  • Desertification leads to a decline in available ground water.
  • Desertification can be reduced.
  • As there is a finite amount of water on Earth, we must reduce/eliminate things that cause a reduction in available ground water.

© The GlobalEd 2 Project

causes of desertification
Causes of Desertification
  • Improper crop rotation
  • Inadequate draining or poor irrigation practices
  • Huge demands on ground water
  • Deforestation
  • Drastic decrease in soil nutrients, leading to loss of vegetation cover

© The GlobalEd 2 Project

effects of desertification
Effects of Desertification
  • Increased frequency of drought
  • Increased frequency of sand/dust storms
  • Greater occurrence of flooding
  • Reduction in available ground water

© The GlobalEd 2 Project

reducing desertification
Reducing Desertification
  • Proper crop rotation
  • Less water-demanding and drought-resistant crops
  • Reduce soil erosion
  • Reduce over-cultivation, over-grazing
  • Improve land-management techniques

© The GlobalEd 2 Project