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Zorluk: ZorPopulation Distribution, Density, and Migration in Africa

In East Africa, the volcanic highlands of Rwanda, Burundi, and the Kenyan Rift Valley support some of the highest rural population densities on the continent, often exceeding 400400 persons per square kilometer. Which combination of geographic factors is primarily responsible for sustaining these exceptionally high rural population concentrations?

  1. Fertile volcanic soils, reliable relief rainfall, and reduced incidence of highland malaria due to lower temperaturesCevap
  2. B
    Severe drought and soil degradation in surrounding lowlands acting as push factors that concentrate rural dwellers into nucleated industrial centers
  3. C
    Flat relief allowing large-scale mechanized monoculture with low labor intensity per unit area
  4. D
    An inverted demographic dependency ratio caused by the massive in-migration of non-working elderly populations into farming areas

Cevap

Fertile volcanic soils, reliable relief rainfall, and reduced incidence of highland malaria due to lower temperatures
The combination of nutrient-rich volcanic soils, abundant relief rainfall, and high elevation (which suppresses malaria vector survival) creates an exceptionally high environmental carrying capacity, enabling intensive smallholder agriculture that sustains high rural population densities.

Adım Adım Çözüm

1
Identify the physical geographic characteristics of the East African highlands.
The region features elevated relief, recent volcanic geology, and an equatorial highland climate.
Physical controls determine the basic agricultural carrying capacity and health environment of a region.
2
Analyze how these physical characteristics impact population carrying capacity.
Volcanic parent materials produce highly fertile soils (andosols), mountain barriers induce reliable relief rainfall, and high altitude lowers ambient temperatures below the optimal threshold for malaria-transmitting Anopheles mosquitoes.
High soil fertility combined with adequate moisture and reduced disease burden allows continuous intensive smallholder farming.
3
Evaluate and eliminate incorrect human and demographic explanations.
High rural density is driven by environmental carrying capacity and agricultural productivity, not by lowland push factors, flatland mechanized farming, or elderly migration.
Distinguishing environmental controls of rural density from urban migration drivers reveals the correct geographic factors.

Anahtar Kavram

Physical Controls of Rural Population Density in Africa
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Konular

Population Distribution, Density, and Migration in Africa

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