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Chapter 2: Population (Part 1) Adam Wolberg
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Population Density n A measure of total population relative to land
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Arithmetic Population Density n Emphasizes the contrasts between the US and other, smaller, countries n ex) Japan; Bangladesh; the Netherlands
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Physiological Population Density n The number of people per unit area of agriculturally productive land
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Population Distributions n The descriptions of locations on the Earth’s surface where individuals or groups (depending on the scale) live
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Dot Maps n Maps where a dot represents a certain number of population
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Population Location n Whereabouts of the major sectors of the Earth with the largest population
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Population Location n 1) East Asia u Primarily China, Korea, and Japan u About 1/4 of world’s population u Nearly 1.3 billion people in China alone
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Population Location n 2) South Asia u 1.5 billion people in India u Extends into Pakistan and Bangladesh, and onto island of Sri Lanka u Over 141 million farmers clustered into area size of Iowa
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Population Location n 3) Europe u Extends from Ireland and Britain to Russia, Germany, and Poland; includes some of France, Italy, and the Netherlands u Over 728 million inhabitants
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Population Location n 4) North America u Clustered in east-central US and southeastern Canada u Lies in urban complex; most of population in megalopolis’ u Megalopolis: Term for reference of huge urban agglomerations F ex) NYC, Washington DC, Philadelphia, etc.
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Population Theories n Thomas Malthus u World’s population was increasing faster than necessary food supply u Food grew linearly; Population grew exponentially u Food is confined spatially: False
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Population Theories n Neo-Malthusian u Scholars who continue on Malthus’s concerns u Understand scale at which human suffering is occurring at u Argue overpopulation must be addressed immediately
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Doubling Time n The necessary amount of time it takes for the population to double in size
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Population Explosion n Immense increase in population growth u ex) Only 45 years passed when next doubling time occurred, population grew to 4 billion (1975)
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Demographic Transition n Expresses the change in population in countries undergoing industrialization n Natural Increase: = Births - Deaths n Crude Birth Rate: # of live births per year per thousand people n Crude Death Rate: # of deaths per year per thousand people
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Demographic Transition n 1) Low-Growth Stage u High Birth Rate, High Death Rate u Varying population u Little long-term population growth
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Demographic Transition n 2) High-Growth Stage u High Birth Rate, Declining Death Rate u Sustained, significant, population size
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Demographic Transition n 3) Moderate-Growth Stage u Declining Birth Rate, Already Low Death Rate u Continuing population growth
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Demographic Transition n 4) Low-Growth/Stationary Stage u Low Birth Rate, Low Death Rate u Very Low rate of growth
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Demographic Transition n 5) Future Population Growth?? u Stationary Population Level (SPL) F World’s population would stabilize and major problems to be faced would involve the aged instead of the young F Stabilization is always being pushed back (revised)
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