Managing desertification

Question 1

4 methods

Answer 1

Acacia Project
Contour stones
Terracing
Planting native plants

Question 2

Acacia project

Answer 2

Planting acacia trees
Stabilises soil
Provides needed shade
Increases humidity

Question 3

Contour stones

Answer 3

Placing large stones along contour lines
Cheap - uses manpower
Increases yield by 50%
Topsoil stabilised
Reduces runoff -  increases infiltration

Question 4

Terracing

Answer 4

Arranging hillsides into terraces
Cheap - uses manpower
Prevents rainfall from washing away
Utilises all rainwater for vegetation

Question 5

Planting native plants

Answer 5

Not introducing non-native invasive species
Shade for livestock, crops, people etc
Leaves can be used as fertiliser
Acts as a wind break 
Stabilises soil