Why cities? Where? Internal spatial dynamics Class 11b: Urban geography Suburbanization Inner cities.

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Presentation transcript:

Why cities? Where? Internal spatial dynamics Class 11b: Urban geography Suburbanization Inner cities

What is a city? A central place (exports good and services to a larger region) A place of a certain size and density –200 in Denmark –2,000 in the U.S. –20,000 in Japan A recent phenomenon (3% in 1800)

Why cities? Specialization of labor Agglomeration and efficiency –Economies of scale –Sharing suppliers, customers, services Administration and organization Defense

Where are cities? Site: characteristics of the place itself Situation: relative characteristics Gateway to gold countryAt a silver deposit Head of navigation On a railroad WaterfallRiver delta

Ancient cities Crossroads, water sources –Jericho (9000 BC) –Catal Huyuk (6000 BC) –Memphis (3000 BC) Cooperation on irrigation, defense –Ur (5000 BC) Interdependence of city and country

Medieval cities Small by today’s standards –1 square mile; 300,000 inhabitants Surrounded by wall, farm fields Military strategy, religion, crossroads Organic city plan

Industrial cities Rapid urban growth New cities: close to power sources, markets –Coalfields (Manchester, UK) –Water power (Lowell, MA) Health and social issues –London (Dickens) –Chicago (The Jungle)

World cities Based on services, not goods Face-to-face contact, communications Global orientation, internal inequalities NYC, London, Tokyo

Economics of cities Your responsibility! Basic vs. nonbasic industries Examples (Figure 12.11) Multiplier effect

Von Thünen’s land use model German landowner in 1800s Noticed pattern of agricultural land use Three assumptions: –Isolated city (no trade) –Surrounded by homogenous landscape –All that matters is transport costs

Urban land use models CBD: “highest and best use” What happens beyond? Three models of Chicago –“Featureless plain” –University of Chicago Not mutually exclusive

Concentric circles Sociologist in 1920s CBD, then “zone of transition” Working-class homes Middle-class homes Commuter suburbs Urban ecology: invasion and succession

Sector model Economist in 1930s Central activities expand out by sector High-end housing in attractive sector Industrial near transportation Middle-class housing next to high-end Lower-class housing gets the rest

Sector model Status displayed via housing Middle class always moves outward Vacancy chains start Fastest growing suburbs = poorest inner city

Multiple nuclei Geographers in 1940s CBD isn’t the only center Commercial, industrial, port, etc. “nodes” Expanding nodes intersect

Suburbs and inner cities Suburban residents and jobs came from somewhere Growth now limited to suburbs Segregation by class, race Falling tax income, rising service needs Spatial mismatch: jobs moved, poor didn’t

Suburbs and inner cities But agglomeration still matters And immigrants still arrive in cities Increasing redevelopment of downtowns –LoDo in Denver –Battery Park in NYC –Jack London Square in Oakland –Train station in Sacramento