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Population Growth and Urbanization Chapter 12 Population Growth and Urbanization
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Myth or Fact? The most important factor in controlling world population growth is technology, especially contraception. U.S. cities are segregated because whites and non- whites don’t want to live in the same neighborhoods. The U.S. achieved zero population growth when the birthrate dropped below replacement rate in the 1970s. Suburban growth in the U.S. began because people wanted larger homes and more land. Myth
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Studying Population Population Total # of people inhabiting a particular geographic area at a specific time Demography Study of the size, composition and distribution of human populations Change over time U.S. Census Since 1790 Mailed for first time in 1960
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Elements of Demographic Change Fertility Crude birth rate—the # of live births in year per 1,000 Fecundity—biological max # of children a woman could bear Mortality Crude death rate—total # of deaths a year per 1,000 Infant mortality—rate of death among infants under 1 year Life Expectancy Average # of years people expected to live Longevity—life span Rate of natural increase The difference between crude birth and death rates Migration Permanent change of residence Immigration—movement into a country Emigration—movement out of a country
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Global Fertility Rates 2008
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Global Life Expectancy 2008
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Global Infant Mortality Rates 2008
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Global Migration
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Population Change in the U.S. 2008
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World Population Growth over 2,000 Years
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World Population Clock 2008
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Population Projections
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World Population Trends Demographic transition Change in patterns of birth and death rates Due to Industrialization Demographic gap Gap between high birth rates and low death rates Carrying capacity The upper limit imposed on a population by its resources Cannot exceed
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Four Stages of Demographic Transition Postindustrial Stage Low Birth Rates and Low Death Rates Industrial Stage Declining Death Rates and Declining Birth Rates Early Industrial Stage High Birth Rates and Declining Death Rates Preindustrial Stage High Birth Rates and High Death Rates
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Demographic Transition
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“NOVA— World in the Balance: The Population Paradox” Video Presentation:
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Perspectives on Population Growth Functionalism Thomas Malthus Population boom in Europe—Industrial Revolution The Malthusian Theorem Food production growth: additive Population growth: exponential Focus on exhaustion of resources Conflict Theory Focus on inequitable distribution of resources Rather than lack Artificial limits benefit some Interactionism Focus on subjective experience Definition of what is desirable or essential
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Population Growth Consequences: Crowding Related to other social problems Poverty, violence, crime Food shortages Focus on yield increases Biotechnology and genetic modification Depletion of resources Shortages of fossil fuels Inter-group conflict Compete for resources Future Prospects: Zero Population Growth Produce no natural increase Family Planning Programs to change cultural values Economic Development Urbanization, rising standards of living Incentives Tax breaks, trust funds Status of Women Equality through education, jobs, vote
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Cities History Humans form communities Groups who share: Common territory Identity or belonging Interaction Cities: Large, permanent Rely on outside areas for food Urbanization: Cities grow more urban Industrialization (18 th —19 th century) Change in the U.S. 1800: ~ 6% lived in cities 2000: ~ 80% lived in cities Growth Suburbs: City outskirts Less density Mostly residential Suburbanization: Government programs (1930s) Federal Housing Administration (FHA) Veteran’s Administration (VA) Economy and technology (1940s-50s) Change in U.S. 1970: 75% of residents both live and work in suburbs 2000: 60% of urban population lives in suburbs
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Urban/Rural Makeup of U.S.
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How Urban Is Your State?
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Urban Density in the U.S.
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Urban Density in the U.S. (2009) Population per square mile U.S. average: 80 California average: 270 Urban density Minneapolis: 1,800 Portland: 3,000 Los Angeles: 8,000 Philadelphia: 11,000 Chicago: 14,000 San Francisco: 16,000 Isla Vista: 18,000 (per ½ sq. mile) New York City: 27,000 (Manhattan: 67,000)
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Shrinking and Growing Cities
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Global Cities: 1,000,000+ residents
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Global Megacities 1975-2015
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“NOVA— World in the Balance: China Revs Up” Video Presentation:
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Problems in U.S. Cities
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Economic Decline Flight of people and jobs NE and Midwest Housing Deterioration and abandonment of neighborhoods Lack of affordable housing Segregation Ghetto Neighborhood inhabited largely by single ethnic or racial group Exacerbates poverty, racial tensions Crime Larger city, higher crime rate More in inner-cities Public Education Poor communities cannot afford expenses
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Urban Flight
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Perspectives on Urbanization Functionalism Urban conditions become social problems When they become dysfunctional When they lead to social disorganization Conflict Theory Urban conditions become social problems Due to social inequality Inner-city residents have little economic and political power Interactionism Urban conditions become social problems When defined subjectively Urban conditions “worsened” in 1980s-90s
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Future Prospects: Urban Problems Federal Grants and Programs Urban renewal Rebuild Provide low-cost housing Stimulate investment Private Investment Make cities better places to live “Enterprise zones” Community Development Join private and public stakeholders Resettlement of Cities Encourage return “Urban homesteading” “Gentrification” Regional Planning and Cooperation Benefit from regional decision making
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