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Measures of Population Change

Measures of Population Change

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Measures of Population Change

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  1. Measures of Population Change Births, Deaths and Fertility

  2. World Population

  3. Crude Birth Rate • Annual number of births per 1,000 population

  4. Crude Birth Rate

  5. Crude Death Rate • Total number of deaths per 1,000 population

  6. Crude Death Rate

  7. Infant Mortality Rate • Number of deaths each year to infants under age 1 per 1,000 live births

  8. Infant Mortality Rate

  9. Total Fertility Rate (TFR) • Number of children born to the average woman of childbearing age • Replacement rate = 2.1 • Must be greater than this in order for population to grow • World average: 2.8

  10. Total Fertility Rate (TFR)

  11. Rate of Natural Increase • Measure of growth • Natural Increase = • (Crude Birth Rate – Crude Death Rate)/10 • Does not count immigration/emigration • World average: 1.4%

  12. Natural Increase

  13. Life Expectancy • Average number of years before death

  14. Life Expectancy

  15. Arithmetic Population Density • Number of people per square mile or square kilometer • World = 53 per km2 • Lowest • Mongolia = 2 • Highest • Monaco = 18,068 • USA = 35

  16. World Population Density

  17. Physiologic Population Density • Number of people per sq. mile or sq. km of arable land • Highest • Singapore = 440,998 per km2 • Lowest • Australia = 43 • United States = 179

  18. Egypt • Population (2006) • 76.4 million • Arithmetic Density • 78 • Pysiologic Density • 2,668

  19. Population Growth

  20. Doubling Time • How many years it takes for population to double • Useful population growth measure • World population doubling time has been decreasing

  21. S-Curve

  22. Carrying Capacity