Drought and Desertification (Grade 11 NSC Matric Geography): Flashcards
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El Niño & La Niña events
El Niño & La Niña events
Major climate patterns affecting global weather
Temperature anomalies in climate
Temperature anomalies in climate
Temperature differences from typical values
Positive anomaly definition
Positive anomaly definition
Temperatures above average
1st way global warming causes drought
1st way global warming causes drought
Reduced rainfall patterns in some regions
2nd way global warming causes drought
2nd way global warming causes drought
Increased evaporation rates from soil & water
Main cause of desertification
Main cause of desertification
Imbalance between resource demand & supply
Location of the Sahel region
Location of the Sahel region
Semi-arid region along southern edge of Sahara desert
Sahel's normal annual rainfall range
Sahel's normal annual rainfall range
150mm to 450mm
Sahel population growth rate
Sahel population growth rate
Doubles every 20 years
Effect of overgrazing in Sahel
Effect of overgrazing in Sahel
Strips protective grass cover, leads to soil erosion