Population and Resources

This lesson examines the critical debate about whether the Earth has sufficient resources to support a growing population. You will study the competing perspectives of Malthus, Boserup, the Club of Rome, and Julian Simon, alongside concepts of carrying capacity, ecological footprint, and resource management. This is a core theoretical component of AQA A-Level Geography Paper 2.

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The Malthusian Perspective

Thomas Malthus (1798): An Essay on the Principle of Population

Thomas Robert Malthus, a British clergyman and economist, published one of the most influential and controversial works on population in 1798. His central argument was:

Key Argument: Population grows geometrically (exponentially — 1, 2, 4, 8, 16...) while food supply grows only arithmetically (linearly — 1, 2, 3, 4, 5...). Therefore, population will inevitably outstrip food supply, leading to crisis.

graph TD
    A["Population Growth<br/>(Geometric: 1→2→4→8→16)"] --> C["Population exceeds<br/>food supply"]
    B["Food Supply Growth<br/>(Arithmetic: 1→2→3→4→5)"] --> C
    C --> D["Positive Checks<br/>(Famine, disease, war)"]
    C --> E["Preventive Checks<br/>(Moral restraint,<br/>later marriage, celibacy)"]
    D --> F["Population falls<br/>back to sustainable level"]
    E --> F

Malthus's Checks on Population