Showing posts with label urban sprawl. Show all posts
Showing posts with label urban sprawl. Show all posts

Wednesday, August 15, 2007

Green Belts - controlling urban sprawl

To restrict development on greenfield sites (sites that have not previously been built on), urban sprawl has been constrained by the creation of Green Belts. Green Belts were created in 1947 as 'collars of land' around urban areas where development is severely restricted to preserve the character of the environment.

Whilst green belts have successfully slowed urban sprawl, in some cases they may protect land of little value, whilst development 'leap-frogs' the constraints of the green belt and begins to grow on the higher quality land beyond it.
Wedges of protected land, as opposed to a surrounding 'collar' have been suggested as a way of allowing controlled growth, whilst protecting high-quality land. Indeed the debate about the future of greenbelts has increased and campaigners are trying to protect greenbelt land.

There are concerns in a number of areas, as further urban development threatens the existing Green Belts. Countryside around both Stevenage and Cambridge is under threat due to plans for the development of new homes, whilst other areas are under threat from other types of development, including plans for a park and ride scheme on the edge of Cambridge.

Case Study: Pressures on the Cambridge Green Belt

In the 1990s, increasing competition for land at the rural-urban fringe to create more jobs and houses, put pressure on green belt areas to release more land.

Cambridge is a famous, historic city with many job opportunities available, easy access to other places and pleasant surrounding countryside. It is protected from urban sprawl by a green belt.

  • - increase in population have previously been dealt with by increased suburbanisation of villages and the creation of new settlements, e.g. Bar Hill and Cambourne, and the newly designated Northstowe (which begins construction in 2008)
  • - over the next 15 years, 42,000 houses need to built in Cambridgeshire to accommodate the increasing population - putting great pressure on the Green Belt
  • - current Green Belt is designed to prevent the mergence of neighbouring settlements, protect the countryside and maintain the character of the city of Cambridge
  • - review of the Green Belt was carried out in 2001 to assess its present success and areas which could be released for development in a sustainable way
  • - the current proposal for development includes 8,000 homes on the edge of Cambridge on land currently in the Green Belt
  • - other options still include, the creation of new settlements and the development of nearby market towns
The key question for debate is whilst provision of new houses is putting pressure on land, should we build on Brownfield sites (areas previously built on which have been demolished) or Greenfield sites (area of countryside, previously never built on)

Why build on Brownfield Sites?
- many areas have unoccupied houses which could be upgraded
- brownfield sites already have utilities such as water and gas pipes
- development in urban as opposed to rural areas can help reduce reliance on cars

Why build on Greenfield Sites?
- cheaper to build on (don't have demolition costs) and lower land-values than in urban areas
- generally perceived as better quality of life in the countryside


Follow up links:
How GreenBelts have benefitted Britain (BBC Video)
"Elastic Band" Green Belt Claim (BBC Article)
Is the Greenbelt an outdated concept? (BBC Article)
Radio 4 News Report - "Is the Greenbelt an outdated concept?"
Warning over Green Belt Hunger (BBC Article)
Is the Green Belt getting 'looser'? (BBC Article)
Green Belt 'at risk of homes' (Gloucesteshire) (BBC Article)
New Developments in the Cambridgeshire Area (linked to Urban sprawl)
Cambridge Green Belt Study
A 'green and pleasant' land (BBC) Article)
Brownfield Land Development


Key term check:
GreenBelts - countryside area around an urban area which are protected from development to restrict urban sprawl
Brownfield Site - an area of land previously build on where developments have been demolished and new building can take place
Greenfield Site - an area of countryside never built on before

The Rural-Urban Fringe (Land-use and conflict)

The rural-urban fringe (the area at the edge of a city) has become an increasingly popular area for economic developments. Competition for land in these areas increased signficantly during the 1990s. The land is much cheaper here than in the city centre, and many factories that were once in inner city locations have moved to these areas as their previous locations lacked space for expansion. As well as industrial estates and residential use, these areas attract shopping centres, business parks and recreation facilities such as golf courses. The benefits of the rural-urban fringe are set out in the diagram below.


Conflict at the Rural-Urban fringe
Although there is competition for land for economic developments at the rural-urban fringe, there is increasing pressure from environmental groups to restrict urban sprawl and protect the environment on the edge of cities from economic pressures. If urban sprawl continues unchecked, many wildlife habitats would be destroyed. Conservationists and farmers want to protect nature reserves and farmland, and open space for recreation is required by people living in the nearby urban area. There is therefore competition for land at the rural-urban fringe and conflict between economic and environmental land-uses. You should be aware of these and be able to discuss them in an exam answer.

There have been a number of attempts to control urban sprawl and reduce / restrict developments on the rural-urban fringe, these include Green Belts which were created by the government in 1947.

Follow up links:

Rural-urban fringe (definition)
The Rural-Urban Fringe (a detailed article really aimed at A'level students - but with many useful points)
Land-use at the rural-urban fringe (a detailed report from the Farm Foundation summarising policies and issues associated with land-use at the rural-urban fringe)
Urban Land-use Model (GeoBytes)

Key Terms Check:

Rural-urban fringe - where urban areas meet the surrounding countryside
Green Belt - an area of land around a settlement where development is severely restricted
Urban Sprawl - uncontrolled growth on the edge of a settlement
Greenfield Site - land previously unbuilt on