3.3 The changing structure of urban settlements Flashcards
Define functional zonation
where set areas in an urban settlement have a set function
What are the land use models?
- Burgess- Concentric Zone Model
- Hoyt- Sector Model
- Harris and Ullmann- Multiple Nuclei Model
- Alonso’s theory of Bid-rent
- The Mann Model
- Griffin and Fords- Models of cities in LEDCs
Define concentric zone
A region of an urban area, circular in shape surrounding the CBD that has common land use/socio-economic characteristics
Define zone in transition/twillight zone
The area just beyond the CBD,which is characterised by a mixture of residential, industrial and commercial land use
Burgess model
- Based on Chicago
- Assumed that the city would tend to form a series of concentric zones.
- He assumed that the new migrants to a city moved into inner city areas because they were the cheapest and oldest housing, and were closest to their work.
- Over time, as residents became wealthier they moved out of the inner city to zones of better housing
Strengths of Burgess model
- If taken as a very broad pattern, then a large number of towns and cities follow the pattern identified by Burgess.
- It is simple and easy to understand
- It helps to understand the process involved in the growth of a city.
Weaknesses of Burgess model
- Assumes transportation is the same everywhere and does not take account better methods of transportation
- Assume cities develop and are based on industry
- Urban regeneration and gentrification - more expensive property can be found in ‘low class’ housing areas
- The decentralisation of shops, manufacturing industry and entertainment does not follow his model.
- Assumes the condition of the land is the same everywhere
- Land may restrict growth of certain zones
Hoyt (sector model)
- Hoyt suggested that zones expand outward from the city centre along railroads, highways, and other transportation arteries from the CBD outwards.
- Emphasise importance of transport routes
Strengths of Hoyt model
- Allows for outward progression of growth
- Communication routes (Rivers, roads, railways) do often provide a very definite boundary to a sector/land-use.
Weaknesses of Hoyt model
- This model was based of the 20th century and does not take into account of cars which make transportation easier
- Now in 21st century, many middle and lower middle class have cars to travel and commute
Define bid-rent theory
theory that refers to how the price and demand for real estate change as the distance from the central business district (CBD) increases
Multiple Nuclei model
- This model stated that the pattern of urban land use does not grow around a single centre but around a number of ‘nuclei
- City may have started with one CBD, similar industries with common land-use and financial requirements are set up near each other => groupings influence their immediate neighborhood
- Low class residential housing tends to be in areas of cheaper land around industry (heavy and light)
- High class residential and medium class residential can afford to avoid living next to industrial areas so these are normally on a different side of the city to industry
Strengths of multiple nuclei model
Provide framework for understanding the distribution of social and economic group provides outward growth progression
Weaknesses of multiple nuclei model
- Each zone displays a significant degree of internal heterogeneity and not homogeneity
- No consideration of influence of physical relief and government policy
- Concepts might not applicable to cities of cultural, economic and political backgrounds
- Abrupt division between zones is non-existent
Mann Model
- The 4 basic sectors are: middle class, lower middle class, working class, and lower working class
- Higher-income groups were also located on the upwind (west) side of the city where air pollution is lowest