Chapter 12 Population Growth and Urbanization
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Transcript Chapter 12 Population Growth and Urbanization
Chapter 12
Population
Growth
and Urbanization
Myth or Fact?
The most important factor The U.S. achieved zero
population growth when
in controlling world
the birthrate dropped
population growth is
below replacement rate in
technology, especially
the 1970s.
contraception.
U.S. cities are segregated Suburban growth in the
U.S. began because
because whites and nonpeople wanted larger
whites don’t want to live in
homes and more land.
the same neighborhoods.
Myth
Myth
Studying Population
Population
Total number of people inhabiting a
particular geographic area at a specific
time
Demography
Study of the size, composition and
distribution of human populations
How these factors change over time
Elements of Demographic Change
Fertility
Actual number of children born
Crude birth rate—the number of live births a year per 1,000 in a
population
Fecundity—the biological maximum number of children a
woman could bear
Mortality
Number of deaths in a population
Crude death rate—total number of deaths a year per 1,000 in a
population
Infant mortality—rate of death among infants under 1 year
Life Expectancy
Average number of years people can expect to live
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
Global Fertility Rates
Global Life Expectancy
Global Infant Mortality Rates
Global Migration
World Population Growth
Doubling time
Years required for world population to double
Population Growth
Population Projections
Population Growth and
Industrialization
U.S. Population Projections
World Population Trends
Demographic transition
Changing patterns of birth and death rates
brought about by industrialization
Demographic gap
Gap between high birth rates and low death
rates
Carrying capacity
The upper-size limit imposed on a population by
its environmental resources
And that cannot be exceeded
Four Stages
of Demographic Transition
Preindustrial Stage
High Birth Rates and
High Death Rates
Early Industrial Stage
High Birth Rates and
Declining Death Rates
Industrial Stage
Declining Death Rates and
Declining Birth Rates
Postindustrial Stage
Low Birth Rates
and Low Death Rates
Demographic Transition
Video Presentation:
“NOVA—
World in the Balance:
The Population Paradox”
Perspectives on Population Growth
Functionalism
Thomas Malthus – “Essay on the Principles of
Population”
Concern about population boom in Europe during
Industrial Revolution
The Malthusian Theorem
Food production growth is additive
Population growth is exponential
The “Malthusian Trap”
Population growth as a social problem
Relationship between population growth and
exhaustion of available resources
Perspectives on Population Growth
Conflict Theory
Population problems due to inequitable
distribution of resources
Rather than lack of resources
Population as a social problem
When those in control artificially limit the available
resources
In order to benefit one group or make a profit
Interactionism
Population a social problem
Focus on subjective experience of reality
Related to definitions about what is desirable or
essential
Consequences of World
Population Growth
Crowding
Intergroup
Conflict
Depletion of
Resources
Food
Shortages
Consequences of Population Growth
Crowding
Associated with other social problems
Poverty, violence, crime
Food shortages
Efforts focused on sea, farmland and yield
increases
The “Green Revolution”
Biotechnology and modified species
Depletion of resources
Shortages of fossil fuels
Inter-group conflict
Competition for scarce resources
Space and food
Future Prospects: Population Problems
Zero Population Growth
Nearly equal birth and death rates
Produce a zero rate of natural increase
Family Planning
Reproductive choices
Programs to change culture and values
Economic Development
In developing countries
Urbanization, education, rising standards of living
Incentives
Usually economic
Tax breaks, trust funds
Status of Women
Promote greater equality
Education, employment, political participation
The History of Cities
All humans organize lives into communities
Groups of people who share:
A common territory
Sense of identity or belonging
Who interact with one another
Cities are:
Relatively large, permanent communities
Reliant on surrounding agricultural communities for food
supply
History of communities
Ancient: small bands of hunter-gatherers
8,000 BC: larger villages with cultivation and
domestication
500 BC: large cities
The Growth of Cities
Urbanization:
Process whereby cities grow and societies become more urban
Industrialization (18th—19th century)
Change in the U.S.
1800: ~ 6% lived in cities
2000: ~ 80% lived in cities
Suburbs:
On the outskirts of cities
Less densely populated
Primarily residential
Suburbanization:
Government policies (1930s)
Federal Housing Administration (FHA)
Veteran’s Administration (VA)
Economy and technology (1940s-50s)
Change in U.S.
1970: 75% of suburban residents both live and work in suburbs
2000: 60% of urban population lives in suburbs
Urban/Rural Makeup of U.S.
How Urban Is Your State?
Urban Density in the U.S. (2006)
Population per square mile
U.S. average: 79
Rural area average: 15
Urban density
Minneapolis: 1,800
Portland: 3,000
Los Angeles: 8,000
Philadelphia: 10,000
Chicago: 12,000
San Francisco: 15,000
Isla Vista: 18,000 (per ½ sq. mile)
New York City: 27,000 (Manhattan: 70,000)
Urban Density in the U.S.
Shrinking and Growing Cities
Global
Cities:
1,000,000+
residents
Global Megacities
1975-2015
Video Presentation:
“NOVA—
World in the Balance:
China Revs Up”
Problems in Cities in the U.S.
Economic Decline
Housing
Segregation
Crime
Educational Problems
Problems in Cities in the U.S.
Economic Decline
Flight of people and jobs from cities
Financial collapse of cities in Northeast and Midwest
Housing
Deterioration and abandonment of neighborhoods
Inadequate affordable housing
Segregation
Ghetto
A neighborhood inhabited largely by members of a single ethnic or
racial group
Exacerbates poverty, racial tensions
Crime
The larger the city, the higher the crime rate
More likely in inner-cities where poor and minorities live
Educational Problems
Poor communities cannot afford expenses
Urban Flight
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
Future Prospects: Urban Problems
Federal Grants and Programs
Urban renewal and community block grants
Rebuild blighted areas
Provide low-cost housing
Stimulate private investment
Private Investment
Focus on making cities a better places to live
“Enterprise zones”
Community Development
Combines private and public resources
Involves community stakeholders in planning
Resettlement of Cities
Encouraging homeowners to move back to cities
“Urban homesteading”
“Gentrification”
Regional Planning and Cooperation
Many problems benefit from regional decision making