Causes of desertification Flashcards
1
Q
Climate change
A
Less and unpredictable rainfall
High temp.
High evaporation
Water supply reduced due to rivers drying up
Causes death of vegetation
2
Q
Change in farming techniques
A
Increased sedentary lifestyles
Increased livestock numbers
Overgrazing
Soil degradation
Vegetation cannot re-extablish
3
Q
Population growth
A
High birth rates Lower mortality rate Refugee populations Food crop dependence Decreased soil fertility Increased demand for wood leads to deforestation
Vegetation removal
4
Q
Desertification (def)
A
persistant degradation of dryland eco-systems by human activity or climate change
