Areas at Risk of Drought and Desertification (Grade 11 NSC Matric Geography): Flashcards
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Drought definition
Drought definition
Unusually long period without adequate rainfall, causing shortages
Desertification definition
Desertification definition
Productive land in semi-arid areas transforms into desert-like land
Three main African regions at risk of drought & desertification
Three main African regions at risk of drought & desertification
Sahel, Horn of Africa, lands bordering Kalahari Desert
Sahel region location
Sahel region location
Strip along southern border of Sahara Desert across N Africa
Horn of Africa countries
Horn of Africa countries
Ethiopia, Somalia, parts of Kenya (northeastern Africa)
Western SA drought frequency
Western SA drought frequency
~25% of twelve-month periods
Eastern SA drought frequency
Eastern SA drought frequency
~5% of twelve-month periods
SA drought pattern direction
SA drought pattern direction
Decreases from west to east following climate zones
Why semi-arid regions most vulnerable to desertification
Why semi-arid regions most vulnerable to desertification
Exist on margins between dry & wet climates, sensitive to change
Degraded land definition
Degraded land definition
Land that becomes less productive than it once was