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Difficulty: EasyMajor Vegetation Zones of Africa

Arrange the following African vegetation zones in descending order of their average annual rainfall, starting from the zone with the highest moisture level to the zone with the driest conditions.

  1. 1Tropical Rainforest
  2. 2Guinea Savanna
  3. 3Sudan Savanna
  4. 4Sahel

Answer

The correct sequence from highest to lowest annual rainfall is: Tropical Rainforest, Guinea Savanna, Sudan Savanna, and Sahel.
Tropical Rainforest receives the highest precipitation among African vegetation belts, followed by the moist Guinea Savanna, the drier Sudan Savanna, and the semi-arid Sahel zone bordering the desert.

Step-by-Step Solution

1
Identify the annual rainfall totals associated with each listed African vegetation zone.
Tropical Rainforest (>1,500 mm), Guinea Savanna (1,000–1,500 mm), Sudan Savanna (600–1,000 mm), and Sahel (200–500 mm).
Vegetation zones in West and Central Africa align directly with latitudinal rainfall gradients.
2
Arrange the zones in descending order from maximum precipitation to minimum precipitation.
Tropical Rainforest comes first, followed by Guinea Savanna, then Sudan Savanna, and finally Sahel.
Moisture availability decreases progressively as distance from the equator increases toward the Sahara Desert.

Key Concept

Latitudinal Rainfall Gradient and Vegetation Zonation in Africa
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Topics

Major Vegetation Zones of Africa

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