Urbanization and Cities

6.1 Origin and Influences of Urbanization

  • Site:

    • Definition: The physical characteristics of a location such as
    • Landforms
    • Water resources
    • Natural resources
  • Situation:

    • Definition: The location of a place relative to other places, e.g.,
    • Proximity to rivers
    • Accessibility via highways
  • Urbanization:

    • Definition: The process whereby an increasing number of people move into cities, contributing to their growth.
    • Impact on society: Changes in demographics, economy, and infrastructure.

6.2 Cities Across the World

  • Megacities:

    • Definition: Urban areas with a population exceeding 10 million.
    • Examples: Tokyo, Delhi.
  • Metacities:

    • Definition: Cities with populations over 20 million.
    • Examples: Tokyo, Shanghai.
  • Periphery:

    • Definition: Countries that are less developed, often characterized by lower income and infrastructure.
  • Semi-periphery:

    • Definition: Countries that are in between fully developed and developing (e.g., Brazil, India).
  • Suburbanization:

    • Definition: The movement of people from urban centers to suburban areas, often linked to urban sprawl.
  • Urban sprawl:

    • Definition: The expansion of urban areas into rural spaces, leading to messy and often unplanned growth.
  • Urban decentralization:

    • Definition: The process of moving businesses and populations away from the central downtown areas to outer areas.
  • Edge city:

    • Definition: A developed area with offices, shopping, and recreational facilities outside the main city.
    • Example: Tysons Corner in Virginia.
  • Exurb:

    • Definition: Regions beyond suburbs characterized by a more rural lifestyle.
  • Boomburb:

    • Definition: A suburb that grows rapidly and exhibits characteristics similar to a city.

6.3 Cities and Globalization

  • World city:

    • Definition: A city that serves as a significant center of global commerce, culture, and politics.
    • Examples: New York, London.
  • Urban hierarchy:

    • Concept: Cities ranked based on their size and global significance, influencing their economic and social dynamics.
  • Globalization:

    • Definition: The process of increasing interconnectedness across nations due to trade, technology, and migration.

6.4 Size and Distribution of Cities

  • Rank-size rule:

    • Concept: The population size of cities in a system decreases in a consistent pattern where the second-largest city is half the size of the largest, the third is one-third the size, etc.
  • Primate city:

    • Definition: A city that is significantly larger and more influential than any other in the country.
    • Example: Bangkok in Thailand.
  • Gravity model:

    • Concept: Larger cities attract more interaction and influence than smaller, more distant cities.
  • Christaller's central place theory:

    • Idea: Explains the arrangement of towns and cities based on the availability of services and market area considerations.

6.5 Internal Structure of Cities

  • Burgess concentric-zone model:

    • Description: A model depicting urban growth in concentric circles with the central business district at the core.
  • Hoyt sector model:

    • Description: Urban expansion occurs in wedges or sectors emanating out from the center.
  • Harris and Ullman multiple nuclei model:

    • Description: Suggests that cities develop multiple centers which serve as zones of activity, rather than a single downtown area.
  • Galactic city model:

    • Description: Cities organized in a spread-out fashion where suburbs connect to highways, resembling a circular layout.
  • Bid-rent theory:

    • Concept: Land value is highest near the city center and decreases as distance from the center increases, influencing urban land use.
  • Latin American city model:

    • Description: Reflects colonial influences, characterized by a wealthy center juxtaposed with impoverished peripheries.
  • Southeast Asian city model:

    • Description: Urban growth occurs in response to port access and transportation routes.
  • African city model:

    • Description: Comprises a blend of colonial, traditional, and market areas, illustrating diverse influences on urban structure.