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词汇 Malthusian theory of population
分类 英语词汇 英语翻译词典
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Malthusian theory of population

英语百科

Malthusian catastrophe

A chart of estimated annual growth rates in world population, 1800–2005. Rates before 1950 are annualized historical estimates from the US Census Bureau. Red = USCB projections to 2025.
Wheat yields in developing countries, 1950 to 2004, in kg/ha (baseline 500). The steep rise in crop yields in the U.S. began in the 1940s. The percentage of growth was fastest in the early rapid growth stage. In developing countries maize yields are still rapidly rising.[2]
World population from 1800 to 2100, based on UN 2004 projections (red, orange, green) and US Census Bureau historical estimates (black)
Growth in food production has been greater than population growth. Food per person increased during the 1961–2005 period, but at a much smaller percentage than crop yields.

A Malthusian catastrophe (also known as Malthusian check) is a prediction of a forced return to subsistence-level conditions once population growth has outpaced agricultural production.

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