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Models of Urban Places Gideon Sjoberg explained the stages of urban development in Models of Urban Places Gideon Sjoberg explained the stages of urban development in

Models of Urban Places Gideon Sjoberg explained the stages of urban development in - PowerPoint Presentation

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Models of Urban Places Gideon Sjoberg explained the stages of urban development in - PPT Presentation

The Preindustrial City Past and Present 1960 Sjoberg said that all cities were a product of their societies and went through stages Folkpreliterate Feudal Preindustrial Urbanindustrial ID: 933281

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Slide1

Slide2

Models of Urban Places

Gideon Sjoberg explained the stages of urban development in

The Preindustrial City: Past

and Present (1960)Sjoberg said that all cities were a product of their societies and went through stages:Folk-preliterateFeudalPreindustrialUrban-industrial

Slide3

Primate Cities

Gideon Sjoberg was also the first to study the

primate city

.A nation’s leading city in size that serves as an expression of national culture.Not necessarily largeDominated by religious and govt. buildingsSpacious with wealth near the centerLess privileged near the edge or outside wall

Slide4

Primate Cities

Positives?

Advantages of agglomeration

Large MarketHigh-order servicesEnhanced flow of informationCentralized TransportationGlobal TradeNegatives?Unequal distribution of investments, resource development, wealthTransportation network prevents equal access to all areasDisproportionate effect of disasterBrain drain

Slide5

Rank-Size Rule

The larger the city-the fewer there are-

Model indicates that the population of a city or town in inversely proportional (the fraction) to its rank in the hierarchy

If largest city is 12 million then 2nd largest is 6 m. (1/2) 3rd largest is 4 m. (1/3) 4th largest is 3 m. or (1/4)

10

th

largest is 1.2 million

Rank-Size Rule does

Not apply to primate

Cities such as Paris,

Mexico City and so

forth

Slide6

Slide7

John Borchert’s “American Metropolitan Evolution”-4 Stage model of evolution

First Stage-Sail-Wagon

Epoch (1790-1830) slow, primitive overland and waterway transport-Boston, New York and Philadelphia were major cities oriented to European trade.

Slide8

John Borchert

s

“American Metropolitan Evolution-4 Stage model of evolutionSecond Stage-Iron Horse Epoch (1830-1870)

Diffusion of steam-powered railroads-coal mining-boomed,

tracks laid coast to coast-manufacturing spread outward from New England hearth-by 1850 New York was primate city with Pittsburgh, Detroit & Chicago growing rapidly

Slide9

Third Stage-Steel-Rail Epoch

(1870-1920)

coincided with the Industrial Revolution Steel industry in Chicago, Detroit & Pittsburgh Coal & iron ore supply areas-northern Appalachia and Lake Superior (Mesabi) Agglomeration in raw materials and market location due to railroad. Steel replaced iron rails-safer-more powerful locomotives-larger freight cars & even refrigerated cars added.

Slide10

Railroads between 1870-1920

Stimulate economic growth: railroads connectivity/accessibility accelerated economic

activity

in cities Migration/labor force: population increased due to increased connectivityCorridors: cities increased in size along rail corridors due to increased connectivityCommercial zone: industrial land use area increased to accommodate rail yards, stations, warehouses, engine shops Cities declined: • Bypassed cities: some cities declined that were not connected to the RR network

Slide11

How railroads affected the form of cities

CBD growth: central business district emerged and

expanded

Urban pattern: star patterns or hub-and-spoke patterns, streetcar suburbs, wider roads Land values: real estate around passenger stations became more valuable and popular; railroads created socio-economic divisions

Slide12

Fourth Stage-Auto-Air-Amenity Epoch

(1920-1970)

Gasoline-powered internal combustion engines-truck based regional and metropolitan distribution of goods; increased automation of blue-collar jobs; shift to white-collar jobs; highways, expressways and jet aircraft made travel faster & cheaper; amenities of suburbs, Sunbelt; New activities responded less to cost-distance factors

Slide13

How highways affected U.S Urban Areas

Relocation of economic activities: services, offices, retailing centers, transportation hubs,

light

industry and warehousing to highway interchange areasSuburbanization: larger suburban labor force could independently access downtowns by car without living there; contributed to decline or depopulation of city centersLand use change: sprawl, suburban area expands as highways radiated out of city; more land area to automotive uses (e.g., parking lots, more lanes, eminent domain); divides city and creates socioeconomic divisions Increased economic connectivityEdge citiesEnvironment:Some Cities decline due to by passes (Route 66)

Slide14

Fifth Stage?-

(1970-Now)

decline of Rust belt continues; high tech. will stimulate an even greater dispersal of city populations; telecommuting, working from home, globalization and outsourcing change the way we work

Slide15

Modern Urbanization

Southwest Asia-North Africa

-great variety of urbanization.

Much of Middle East, esp. Arabian Peninsula are highly urbanized due to nucleation of the oil industry.Jordan an exception-no oil wealth-but urban due to long traditionSouthern Arabia is oil poor and ruralContrast-oil rich Libya is urban, oil poor Afghanistan is rural

Slide16

Modern Urbanization

South Asia-

low in urbanization, despite huge cities like Mumbai and Calcutta

Most nations in South Asia are under 30% urbanIndia-26%Pakistan-28%Bangladesh-16%Subsistence farming dominates life here

Slide17

Modern Urbanization

Southeast Asia-

Singapore is the only 100% urban state

Brunei & Malaysia are the only other nations with over 50% urban Indonesia-31%Myanmar-25%Vietnam-20%Thailand-19%Subsistence farming dominates life here

Slide18

Modern Urbanization

East Asia-

Averages 36%

Only Japan, South Korea and Taiwan are highly urbanized in East Asia China below-25%Yet Shanghai & BeijingHave 25 million betweenThem, however most of China’s 1.2 m. are rural

Slide19

Problems in Urban America

200 years ago only 5% of world was urbanized

Today about 50% is urban

Germany, Spain & Belgium are over 90% urbanWorld wide urban problems are: pollution poor sanitation drugs and crime congestion and noise

substandard housing & slums

Slide20

Problems in Urban America

With urban sprawl and expanding suburbs-inner city shrinks

CBD is often reduced to serving just the inner metro area

As basic sector jobs leave-large cities have shifted to service industriesLoss of tax base as businesses, industries and services leaveUrban decay results

Slide21

Problems in Urban America

New York City a good example:

3 million people plus uncounted illegals crowd into 75 to 100 year old apartment buildings

Many buildings are worn out, rat & roach infested with high crime rates, vandalism and cases of spouse & child abuseYet despite the problems there is a sense of community that may be lost if the neighborhood is torn down

Slide22

Making Cities in the Global Periphery and Semiperiphery

sharp contrast between rich and poor

- Often lack zoning laws or enforcement of zoning laws

Slide23

The Ibero-American City

Latin American cities are growing rapidly-1950= 41% urban, 1997 74% urban

CBD dominates the center with 2 main divisions-traditional market and modern high rises

A commercial spine and axis of business is surrounded by elite residential housing

Griffin-Ford model

Slide24

The Ibero-American City

The

spine

is an extension of the CBD with offices, shops, high class housing, restaurants, theaters, & parksZone of Maturity-Middle class housing 2nd bestZone of In Situ Accretion-high pop. Density of modest housingPeriphery-Periferico

-high density shanty towns of extreme poverty and no services (favelas)

Slide25

The African City

African cities often have 3 CBDs=Colonial, Traditional and Periodic Market Zone

Sub-Saharan Africa is the least urbanized area of the world, but the most rapidly urbanizing

No large cities to match Cairo-Kinshasa, Nairobi, Harare, Dakar, Abidjan were established by Europeans

de Blij model

Slide26

The African City

No large cities to match Cairo-Kinshasa, Nairobi, Harare, Dakar, Abidjan were established by Europeans

South African cities-Johannesburg, Cape Town & Durbin are western cities with elements of European and American models-high rise CBDs and sprawling suburbs

Slide27

The Southeast Asian City

SE Asia-rapid growth of population & cities-1950-15% urban, 1990s-29% urban

Most growth in coastal cities like Ho Chi Minh City (Saigon)

Old colonial port zone surrounds the commercial districtUnlike Western cities-no formal business zone, but separate clusters

McGee model

Slide28

The Southeast Asian City