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Population Geography

Population Geography. Population Geography: number, composition, & distribution of human beings Demography: the statistical study of human populations. A. History of Human Population. Prehistoric time (5,000 years ago)? about 5 million people 1900? 1 billion

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Population Geography

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  1. Population Geography

  2. Population Geography:number, composition, & distribution of human beingsDemography:the statistical study of human populations A. History of Human Population • Prehistoric time (5,000 years ago)? • about 5 million people • 1900? • 1 billion • Last year … 6.8 billion people. Today? 7 billion!!!

  3. World POPClock Projection

  4. How much is a billion??? • What caused the increase? • How many brothers and sisters do you have? • What does “ZPG” mean? • Singapore since WW II? • What does the future hold? • Can the earth support many more people?

  5. B. “The Population System” *basic components of population change: inputs & outputs Inputs add to the system…outputs subtract Types of inputs and outputs: • Fertility: births rates • Mortality: death rates • Net Migration: immigration (migration in) minus emigration (out)

  6. C. Crude Birth Rate (CBR) • Birth rate is calculated by live births per 1,000 persons. • Less than 20 per thousand is a low birth rate • What is the highest? … Niger with 53:1,000 Life expectancy in Niger??? 41 years of age…

  7. Crude Birth Rates

  8. *World population increase has been a result of declining death rates, NOT increasing birth rates.

  9. D. Fertility Rates (TFR) TFR (total fertility rate): average number of live births per 1,000 women of child bearing age * Rate of 2.1 is required just to REPLACE the present population to have ZPG (zero population growth) * Developed counties: TFR of 1.6 or less Developing countries: TFR of 3.6

  10. 10 Places With the Lowest TFR’s Worldwide:

  11. Russia’s demographic collapse

  12. Total Fertility Rates

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