Basics of Population Geography - Mr. Tredinnick's Class Site · Basics of Population Geography...
Transcript of Basics of Population Geography - Mr. Tredinnick's Class Site · Basics of Population Geography...
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Basics of Population Geography
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Population
• The number of people within a given geographic area
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Demography
• The study of population characteristics
– Looks at spatial distributions of people by age, gender, occupation, fertility, health, etc…
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Physiological Density
• The amount of people divided by the amount of arable land – Ex. USA is 445 per
square mile, Egypt is 6,682 per square mile
• The higher the physiological density the greater the pressure the people put on the land to produce food
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Agricultural Density
• Is the ratio of the number of farmers to the amount of arable land
– USA has 2 farmers per square kilometer, China is 145 farmers per square kilometer
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Overpopulation
• Refers to the over-exertion of resources given a population’s need in a specific area.
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Mapping Data – Population Pyramids
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Mapping Data – Population Cartogram Map
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Mapping Data – Population Density Map
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The Demographic Transition Model
• Uses Crude Birth Rate and Crude Death Rate to calculate population growth at different stages of development
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Thomas Malthus (1766 – 1834)
• English Economist
– 1766-1834
– Considered to be father of Demographics
– Made observations of England’s working class during industrial revolution
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Population vs. Resources
• For stages 1-3 resources exceed population, then as population exceed resources this leads to “misery”
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Positive Checks
* Red line is population, blue line is food production
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Negative Checks
* Red line is population, blue line is food production
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Neo-Malthusians
2. Neo-Malthusians Robert Kaplan and Thomas Fraser expanded Malthus’ ideas to more than just food, but to also include energy resources
– Argue wars and civil violence will increase as food, clean air, fuel, and suitable farmland become more scarce
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20th Century Thought
• Esther Boserup
– Optimistic view of population growth
• As population approached crisis the world would respond with assistance spawning economic growth and new technologies
• Julian Simon
– Population growth spurs economic development
• More people means more ideas
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Boserup’s Theory