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Unit 2: Population and Migration

Unit 2: Population and Migration. Demography. Why is it so important to study world population?. Why is this important?. Reference Maps Show locations of places and geographic features Absolute locations What are reference maps used for?. Thematic Maps

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Unit 2: Population and Migration

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  1. Unit 2: Population and Migration

  2. Demography

  3. Why is it so important to study world population?

  4. Why is this important?

  5. Reference Maps Show locations of places and geographic features Absolute locations What are reference maps used for? Thematic Maps Tell a story about the degree of an attribute, the pattern of its distribution, or its movement. Relative locations What are thematic maps used for? Two Types of Maps:

  6. Geographic Information System: a collection of computer hardware and software that permits storage and analysis of layers of spatial data.

  7. In this unit:

  8. Overpopulation: is it a problem?

  9. Where is the world’s population distributed?

  10. Population Concentrations:

  11. Four Regions:

  12. Population of East Asia:

  13. China:

  14. India:

  15. Europe:

  16. Southeast Asia

  17. Sparsely populated regions:

  18. Reliability of Population Data, Fertility/Mortality/Birth rate Precursor to Demographic Transition Model

  19. Population Change Measured: • Crude Birth Rate (CBR) • Crude Death Rate (CDR) • Natural Increase Rate (NIR)

  20. Crude Birth Rate: CBR • Total number of live births in a year for every 1000 people. • What does a CBR of 50 mean?

  21. Crude Death Rate: CDR • Number of deaths in a year for every 1000 people alive

  22. Natural Increase Rate: NIR • Percent by which a population grows in a year • Subtract CDR from CBR after converting the numbers to percentages • CDR 5 per 1000 • CBR 20 per 1000

  23. Natural Increase Rate: • NATURAL increase rate: How the population naturally increases. • Does this include migration to and from the country?

  24. Doubling Time • Rate of natural increase affects the doubling time: number of years needed to double a population (constant rate of natural increase) • Rate of 1.2: in 2100 the population would be 24 billion

  25. Population Decline: • What countries/regions? • NIR declining in Europe

  26. Differences in Growth Rates: • Fertility rates • Mortality rates • We use both to explain how countries and regions vary in population growth (or even population decline)

  27. Fertility • Crude Birth Rates: total number of live births a year per 1000 people. • CBRs mirror Natural increase rates (NIRs) on maps

  28. Mortality • Infant Mortality Rate (IMR) • Annual number of deaths of infants under 1 per 1000 live births • Life Expectancy

  29. Mortality: • Life expectancy: • Average number of years a newborn infant can expect to live • High life expectancy where?

  30. What is overpopulation? Number of people exceeds the environment’s ability to support life

  31. Help? • Economic growth must be faster than population growth • --> impoverishment

  32. Global food production map

  33. Government Policies: Cont’d • Restrictive Population Policies • China: 1-child policy (housing privileges, financial opportunities, education) • Abortion, female infanticide, orphan girls • India

  34. Migration Permanent move to a new location

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