World Cities
BLEH
- Created by: Ted Westwood
- Created on: 11-06-12 09:25
% world pop in urban areas of 1955 and 2015
1955 - 31%
2015 - 52%
Megacity Definition and Number
Definition: Pop excess 10 million
Number: 20 in world, 15 in developing
UK increases
Pop increase 7% 2021 of 1997 level
Household increase 18% due to lower young pop
71% all households belong to single peopl
Urbanisation Reasons
- Natural increase
- Low yield over farming in rural - soil erosion
- 18th 19th C - agricultural revolution increased food surplus
- Labour from countryside
- Coal power enabled work at industry instead of next to river
Urbanisation Effects
- Poor living conditions - over crowding and poverty
- Informationalisation - Fibre optic cable between India + Kenya
Kibera, Nairobi Shanty Improvement
- 2 million moved from Shanty to new apartments
- Cost 1.2bn
- Rents hard to pay off
- Loss of culture and informal jobs
Brown Agenda Definition and Components
Definition - The environmental problems faced by countries in developmental process
Components:
- Traditional environmental issues such as water
- Contamination, air pollution and noise pollution
International Bodies such as UN:
- Conduct public consultation on issues
- Make government commitments
- Analyse risks, impacts and cost
- Community leaders and groups established
Core and Periphery Model
- Developed by Wallerstein
- Two areas of economic activity cannot survive without the other
Core - high level industry relying on investment. The "positives" of globalisation such as healthcare, medicine and education included
Periphery - low end of the spectrum, less technology required, usually collecting and manipulating low value materials. Usually in LEDCS
Suburbanisation in UK 30s to 70s
- Public transport such as Tube as well as private car use.
- Railway lines and arterial roads
- 1930s few planning controls
- 1940s greenbelts introduced
- 1950s suburbs well controlled
- 1960s council houses on fringes
- 1970s privately owned homes built on estates as restrictions loosened
- Now 1000s homes on greenbelt planned. 30 sites across UK perhaps creating urban sprawl between Nottingham and Derby
Reduce Suburbanisation
- Encourage downsizing or utilise empty homes or council houses
- Encourage development of brownfield - many reluctant due to costs such as pollution clearance and demolition
- Improvement of infrastructure as it is over capacity
Counter-urbanisation - UK figures and causes
- UK 1991-2001 rural pop increased 6%. Metropolitan areas down 2%
- Demand for second homes
- Commuting
- Decline in agriculture means selling of unwanted land and conversion of barns
- Keep local services open
- Though out-migration of young people
Urban Decline Reasons and Impact/
- Developers and builders try to hit certain markets causing segregation
- Changing needs - Victorian houses now not big enough for average family
- Immigrants find it hard to get jobs
- 35% loss of UK conurbation pop between 1950 and 1980. 25% decline in Manchester and Liverpool in the 70s alone
- Investment move to rural areas
- 1995 employment rates in inner city areas 50% lower than everywhere else
- 1960 and 1981 1.6 million manufacturing jobs lost - 75% of all loses.
- Service industries great due to footloose contracts
- Young, skilled people leave
- 19th century homes replaced by horrific estates and high rise flats in 60s-70s
Improvement Initiaves of 80s +
- UDCs (Urban Development Corporations) - Docklands 1981 flagship. 11 sites by 1993. Local needs were not taken into consideration. Rely most on government lead and private investment. Thames Gateway total investment £16 billion creating 35,000 homes and 190,000 jobs but lost money
- SGBs (Single Generation Budgets) - Introduced 1997 to improve housing. Applied for by local councils giving locals a bigger say
- EZs (Enterprise Zones) 1981 - stimulate growth in areas of high unemployment
- Inner City Task Force 1987 - brought training opportunities and 50,000 jobs
- Sports led regeneration
Regeneration in Lagos, Nigeria
- High rise apartment blocks constructed
- Site and service scheme - rents paid for individual housing plots with water, sanitation and roads provided. The house is constructed themselves
- Self help schemes - given bricks and breeze blocks for housing improvement. Encouraged to build community infrastructure under regulations
Retailing Change
- Traditional - local daily basis bought goods. Travel for higher value goods. Changed due to transport in last 30 years
- Supermarkets now in residential areas and small towns with full range. Now "weekly family shop"
- 1980s - retail parks of DIY, carpets and furniture on outskirts
- 1990s - accessible out-of-town shopping centres
- 21st C - e-commerce and next day delivery
Reason for retail change
- Free car parking out of town - inner city opposite
- More accessible
- Petrol stations are like corner shop to many
- Freezers - food bought in bulk or advance such as ready meals
- Shopping as social activity
PVLI definition and problems faced in CBD
PVLI definition - Peak Land Value Intersection - highest ranked, busiest, most accessible part of the CBD. Not static and there are zones of assimilation and discard.
Problems:
- Out-of-town shopping centres
- Office emphasis, now moving to suburbs
- Cost of development and upkeep of CBD escalating
- Negative multiplier
- Congestion and inaccessibility
Core and Frame Model Features
- Shows urban structure of CBD
- Where land is most expensive
- Functions of zones
- Lowest land values usually outer areas
CBD strategies
- Destination experience
- Special events and friendly shopping
- All weather malls and low cost parking
- Specialised quarters and increased function
- Conservation of historic buildings
- Improve transport links
- Reduced crime
Attitude to out of town shopping
- Threatens safety, causing pollution and noise in residential areas
- Continuous flow of cars and deliveries
- Traffic in Trafford centre and build up on M60
- No independent stores
- Public transport inefficient - 85% came by car in 2004. Buses finish the metrolink line
Waste Management Hierarchy
- Landfill - clay and plastic can stop contamination. Government want to reduce 75%
- Incineration
- Physical reprocessing - hard for multi material items
- Biological reprocessing - compost
- Energy Recovery
- Energy reduction
UK transport issues
- Olympic congestion as pop double for 1 month. Reduce traffic by 60%
- Cross Rail north and south London
- Increased car ownership - 30% own two or more cars due to higher incomes
- Public transport capacity exceeded
- Suburb - suburb easier done by car. Car travel is still more convenient
- Increase in service and freight traffic
Improvement Schemes
- M25 round London caused more congestion
- Congestion charges - London 2003-2007 Manchester 2008
- Bus lanes and car priority
-6,000 bikes in London
- Speed bumps, rising bollards, restricted access and pedestrianisation
- Bypass A65 Skipton
- Streamline public transport Mersey. 1/3 pop live within 1km of merseyrail station
- Low cost public transport - super-tram sheffield
- Expensive car parks - though could decrease vistors
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