unit 2: population and migration
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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 - PowerPoint PPT PresentationTRANSCRIPT
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Unit 2: Population and Migration
![Page 2: Unit 2: Population and Migration](https://reader034.vdocument.in/reader034/viewer/2022051420/56816029550346895dcf32c7/html5/thumbnails/2.jpg)
Demography
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Why is it so important to study world population?
![Page 4: Unit 2: Population and Migration](https://reader034.vdocument.in/reader034/viewer/2022051420/56816029550346895dcf32c7/html5/thumbnails/4.jpg)
Why is this important?
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Two Types of Maps:
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?
![Page 6: Unit 2: Population and Migration](https://reader034.vdocument.in/reader034/viewer/2022051420/56816029550346895dcf32c7/html5/thumbnails/6.jpg)
Geographic Information System:a collection of computer hardware and software that permits storage and analysis of layers of spatial data.
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In this unit:
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Overpopulation: is it a problem?
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Where is the world’s population distributed?
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Population Concentrations:
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Four Regions:
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Population of East Asia:
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China:
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India:
![Page 26: Unit 2: Population and Migration](https://reader034.vdocument.in/reader034/viewer/2022051420/56816029550346895dcf32c7/html5/thumbnails/26.jpg)
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Europe:
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Southeast Asia
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Sparsely populated regions:
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Reliability of Population Data, Fertility/Mortality/Birth rate
Precursor to Demographic Transition Model
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Population Change Measured:
• Crude Birth Rate (CBR)• Crude Death Rate (CDR)• Natural Increase Rate (NIR)
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Crude Birth Rate: CBR• Total number of live births in a year for every
1000 people.– What does a CBR of 50 mean?
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Crude Death Rate: CDR
• Number of deaths in a year for every 1000 people alive
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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
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Natural Increase Rate:
• NATURAL increase rate: How the population naturally increases.
• Does this include migration to and from the country?
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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
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Population Decline:
• What countries/regions?– NIR declining in Europe
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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)
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Fertility• Crude Birth Rates: total number of live births a
year per 1000 people.• CBRs mirror Natural increase rates (NIRs) on
maps
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Mortality
• Infant Mortality Rate (IMR)– Annual number of deaths of infants under 1 per 1000 live
births• Life Expectancy
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Mortality:
• Life expectancy:– Average number of years a newborn
infant can expect to live – High life expectancy where?
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What is overpopulation?
Number of people exceeds the environment’s ability to support life
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Help?
• Economic growth must be faster than population growth
• --> impoverishment
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Global food production map
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Government Policies: Cont’d
• Restrictive Population Policies– China: 1-child policy
(housing privileges, financial opportunities, education)• Abortion, female
infanticide, orphan girls
– India
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Migration
Permanent move to a new location
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Flow of Migration
• Emigration– Migration
FROM a location
• Immigration– Migration TO
a location
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Migrant labor
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Push Factors vs. Pull Factors• Push Factor: induces people to move out of their location
• Pull factor: induces people to move into a new location
I think I need to move…
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Main reason for international migration?
• Job related opportunities
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Gender
• Who is more likely to migrate? Why?
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Impact of Immigration
• Diffusion of culture– Religion– Art– Music– Literature– Philosophy– Ethics– Cultural traditions
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Impact of Illegal Immigration• Immigration allowance: high• 11.9mil undocumented, +500,000
come each year• 59% from Mexico• 22% from Latin America• 12% from Asia
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View from Mexico
• Mexico is both a source and destination
• Views from Northerners vs. Southerners
• Remittance