Population Geography

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Population Geography

• Chapter 5 Sec 1

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Demographythe statistical study of human
populations.
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Use stats to forecast what future populations
will be like.
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SchoolsNursing HomesTypes Businesses
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Population Density the average number of people
per square mile.
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Population Distribution where people live on
earth Why is population spread unevenly?
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Favorable Places to Live

• Mild Climate
• Fertile Soil
• Adequate Supply of Freshwater

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Polar Regions, deserts, and rugged mountains
usually have few people.
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Population Change

• Birthratenumber of births per year per 1,000
  people
• Death rate number of deaths per year per 1,000
  people.

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• Migration people moving from one place to
  another.
• Emigrants people who leave a country.

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Immigrants people who enter a country.
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Factors of Migration Push and Pull Factors
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Most People migrate for economic
reasons
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Push Factor causes people to leave a location.
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Pull Factor attracts people to a new location.
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Push Factors

• Lack of Jobs
• Droughts
• Floods
• Political Unrest

• Wars
• Persecution

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Refugee people who have been forced to leave and
cannot return to their homes.
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Pull Factor

• Good Jobs/Pay
• Warm Climates other favorable environmental
  conditions.

• Lack of persecution
• Physical geography

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Natural Increase --based just on Birth rate less
Death Rate.
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Africa SW Asia highest natural increase (3)
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Europe North America lowest rate of natural
increase (0.6)
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Currently 6 Billion people in world.
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Why is overpopulation a problem?
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AnsIf the existing number of people is too large
to be supported by available resources.
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Demographic Transition Stages

• Shows how BR and Death rates dropped in countries
  that developed modern economies.

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Stage 1

• Both BR DR are high.
• High infant mortality rate (babies die)

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• BRDR causes population to be stable
• Usually found in Agricultural societies.

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Stage 2

• DR falls due to improved medicine, health care
  (especially for children)

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• Better food production and distribution
• While DR falls, BR continues to be high.

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• Children more likely to livefamilies grow in
  size.

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More advanced farming tech cause rural to urban
migration growth of cities.
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People switch to urban culturehave less
children marry later.Population declines.
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Stage 3

• Both BR DR are low
• Population growth is low.

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All the worlds economically advanced countries
have reached this stage.
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Population Axioms

• Countries having the highest population increase
  are usually the poorest.

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Difficult to predict population growth because
future birthrates cannot be known beforehand.
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• Caring for a growing number of children/Older
  people strains resources of a country

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Public health, producing/distributing food, and
protecting the environment all challenges
countries will faceespecially with growing
populations.
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