Contemporary Urban Enviroments - Section 2 Urban Form Flashcards
What is urban form?
Urban form is the physical characteristics that make up a city, including its size and shape, population density and how the city is arranged (e.g. land use patterns in different areas).
What are the physical factors that affect urban form?
Topography
Water
Natural resources
Land type
How does topography affect urban form?
Topography (physical features of land) often influence growth of cities
steep slopes are harder to build on and less accessible, so poorer housing (e.g. slums / favelas such as Rocinha in Rio de Janeiro) may be built on them.
Flat land is easier to build on so may attract a higher land value.
Large flat areas encourage low density developments because there’s lots of space to build. However, flat land near rivers may have a flood risk.
How does water affect urban form?
The presence of lakes and seas limits urban growth in those areas.
Cities may grow along the course of a river.
City centre shops and businesses are usually located close to the waterfront, rather than at the geographical centre of the city.
How do natural resources affect urban form?
Rich resources (e.g. coal, metal) encourage growth in size and population of cities.
How does land type affect urban form?
Some ground surfaces are more difficult or expensive to build on than others, e.g. swamps and wetlands can limit urban growth
What are the human factors that affect urban form?
Planning
Infrastructure
Land value
How does planning affect urban form?
Urban expansion can be planned or unplanned.
For example, a lot of urban growth in developing countries is caused by the unplanned expansion of slums.
In contrast, planned developments often include open space, leisure facilities
How does infrastructure affect urban form?
New developments are often built along transport links (e.g. motorways) leading to linear growth.
How does land value affect urban form?
The highest land value is often found in the city centre, so profitable businesses (e.g. chain stores) normally locate there, while less profitable businesses (e.g. independent shops) may be found further from the centre.
What is the theory of land value linked to spatial pattern?
Land value is traditionally higher in the centre of a city where accessibility is greatest. The Peak
Usually, only very profitable businesses such as large retailers can afford the high prices of city centre.
Other retailers and commercial land uses tend to occupy most of the Central Business District (CBD). But cannot pay the higher prices to be in the most accessible locations. As a result, smaller retailers and businesses are more likely to be found towards the edge of the CBD.
Houses generally increase in value with distance from city centre although land value tends to be highest in the city centre.
What is the Peak Land Value Intersection (PLVI)?
The Peak Land Value Intersection (PLVI) is the point/site with the highest land value and from it, land prices decline in line with the theory of distance decay.
Land value Inner city vs rural areas
Inner city areas have high land value, so housing is typically high density, e.g. skyscrapers.
Wages are often low, and many residents live in relative poverty. The porpoprtion of people from ethnic minorites tends to be high.
Land value is lower in rural and semi-rural areas, so resindential areas are less dense and have
more open space. Houses are usually larger and newer than those in inner city areas.
Residents are generally quite wealthy and earn relatively high wages.
The proportion of people from ethnic minorities tends to be low.
What are the features of urban form?
Cultural and heritage quarters
Edge city
Fortress landscapes
Gentrification
Post-modern western city
Town centre mixed developments
What is urban morphology?
The spatial structure/ form and organisation of an urban area. How it’s laid out - its pattern of land use