What can be done to reduce risk of desertification Flashcards
1
Q
Why is Badia-Jordan experiencing desertification
A
- Low rainfall and high temperatures (40 degrees)
- Influx of sheep from Iraq led to overgrazing.
2
Q
List 2 methods to reduce risks of desertification
A
- Tree planting
- Appropriate technology
3
Q
How tree planting stops desertification?
A
Tree planting stops desertification by leaf litter to the ground. Improve nutrient cycle.
4
Q
What is appropiate technology
A
Technology that are suited to their education and economic level.
5
Q
Examples of Appropriate technology
A
Magic Stone Wall
6
Q
Where is Magic stone wall used?
A
Senegal
7
Q
What are Magic Stone Wall
A
Lines of stone walls placed across the fields to slow water run off and prevent soil erosion
8
Q
How do salinization work?
A
- Desert temperatures increase rate of evaporation
- Water evaporates bringing salts up to the surface
- salt form white rust on surface
- soil becomes infertile due to high salinity
- Hard to reverse