Urban Land Use Theories (Leaving Cert Geography): Revision Notes
Urban Land Use Theories
Understanding how cities are organised and why different activities locate in particular areas has fascinated geographers for decades. The spatial distribution of urban activities follows predictable patterns that can be explained through theoretical models. To help explain these patterns, three major theoretical models have been developed to show how various land uses are distributed within urban areas.
These urban land use theories were developed during the 20th century as cities rapidly expanded and geographers sought to understand the underlying patterns of urban growth and social organisation.
The three main theories
Geographers have created different models to explain urban layout, focusing on three key theories:
- Concentric zone model - created by Ernest Burgess in 1925
- Sector model - developed by Homer Hoyt in 1939
- Multiple nuclei model - devised by Chauncy Harris and Edward Ullman in 1945
Each theory attempts to explain the social structures and land use patterns found in urban areas, though they were developed in different time periods and based on different observations.
Theory 1: Concentric zone model
Ernest Burgess was an American sociologist who created this model in 1925 as one of the earliest attempts to explain urban social structures. His theory aimed to show how social groups are distributed and how land is used across different parts of cities.
Zone of transition - an area surrounding the CBD of a city, where functions and land uses regularly change.
Key principles of Burgess's model
Burgess based his observations on Chicago and noticed that land use was arranged in a series of concentric circles around the Central Business District (CBD). His theory rests on the principle that land values are highest at the city centre, with the outer areas of the CBD constantly changing and expanding.
Burgess's model was groundbreaking because it was one of the first systematic attempts to explain urban spatial patterns using scientific observation and theory.
The model identifies two important patterns:
- Socio-economic status increases with distance from the city centre, as wealthier people live away from the city centre in suburbs
- Housing density is highest closer to the city centre and decreases with distance from the CBD
The five zones explained
Burgess's Five Concentric Zones
Zone 1: Central Business District (CBD) This forms the commercial heart of the city, where buildings are tall and land is expensive. The high cost of land leads to maximum utilisation of available space, with high-density development.
Zone 2: Zone of transition This area contains a mixture of residential and commercial uses. Despite some industrial activity, it mainly consists of high-density and low-quality housing, often occupied by migrants who benefit from cheaper rent prices.
Zone 3: Working class residential zone This zone is dominated by lower-income housing where working class people live. Residents are better off than those in the transition zone, with many working in zone two. Population densities remain high in this area.
Zone 4: Middle-class residential zone Comprising detached or semi-detached houses with gardens, this zone houses middle to higher class residents who can afford better quality housing with more space.
Zone 5: Commuter zone The outer zone consists of towns and villages on the city outskirts. These high-class residential areas house people who can afford to travel longer distances to work in the CBD.
Limitations of Burgess's model
Critical Limitations to Consider:
Several factors limit the relevance of this model to modern cities:
- The model is outdated, based on 1920s American cities when many migrants had settled in poorer inner city areas, creating distinct social divisions
- Increased car ownership and improved transport links mean people can live further from city centres and commute to work - something not considered in Burgess's time
- The theory fails to account for physical landscape features like rivers, hills and valleys that affect urban development
- Modern urban features such as industrial estates, business parks and shopping centres didn't exist when the model was created
- Wealth doesn't always increase with distance from city centres, as inner city renovation can create expensive apartments whilst low-income housing estates may be found on urban fringes
Theory 2: Sector model
Homer Hoyt developed this model in 1939 after studying rent payments for housing across many cities. He believed that mapping rent values would reveal patterns of different land uses in urban areas.
Key features of Hoyt's model
Hoyt's model built upon Burgess's work but also considered the impact of transport links on land use. His theory demonstrates that cities develop along major transport routes extending out from the city, including roads, railway lines and canals.
Hoyt's innovation was recognising that transport infrastructure creates corridors of development, leading to sector-shaped rather than circular urban growth patterns.
The model shows that towns grow in sectors or wedges radiating out from the CBD, with each sector reflecting different zones of land use and income levels. Like Burgess, Hoyt recognised that income and status divided society, meaning people of different social classes didn't live close together.
Hoyt's five zones
Hoyt's Sector-Based Zones
Zone 1: Central Business District The commercial heart of the city where land values and building density are highest.
Zone 2: Wholesale light manufacturing This zone follows railway lines or navigable waterways such as canals. It contains factories and manufacturing land use, with warehouses and industrial areas built along transport routes. Low-quality housing developments are often built nearby, usually confined to one side of the town close to industrial areas.
Zone 3: Low-income residential housing Mainly occupied by slightly wealthier people than those in zone two, many residents work in the industries of zone two. This zone experiences high levels of noise and air pollution from traffic and nearby industries.
Zone 4: Middle-income residential housing Located away from poorer areas due to social stratification, this zone provides housing for middle-class residents who can afford to live at greater distances from industrial areas.
Zone 5: High-income residential This sector consists of high-income residents living in the most desirable part of the city. Located furthest from factories and manufacturing activity, this zone can extend considerable distances from the city centre for inhabitants who can afford to commute relatively long distances to work.
In 1964, Hoyt modified his model to account for increased car ownership, recognising that commuter villages outside cities often have the highest rents.
Limitations of Hoyt's theory
Key Limitations of the Sector Model:
- Geographers consider the model too generalised and unrealistic for modern cities. Although Hoyt studied 142 cities (compared to Burgess's single city study), the theory is now outdated
- Hoyt believed residential areas would remain segregated according to income levels. However, renovation of older inner city buildings into modern expensive apartments disproves this belief
- The theory only studied US cities, failing to consider the layout of European cities
Theory 3: Multiple nuclei model
Chauncy Harris and Edward Ullman developed this model in 1945, suggesting that modern cities have much more complex structures than those outlined by either Burgess or Hoyt.
Core principles
The theory proposes that urban areas grow around multiple business districts (multiple nuclei) rather than around a single CBD. Harris and Ullman believed it was possible to have more than one business district in an urban area, with certain activities attracting each other.
The multiple nuclei model was developed to better explain the complexity of larger cities and conurbations that had grown beyond the simple patterns described by earlier models.
Key characteristics of the model
Multiple business centres The model suggests urban areas can have more than one business district, with each centre attracting growth and becoming a focus for further development.
Activity clustering Similar activities attract each other - for example, factories often locate together in industrial estates or near ports, whilst business districts may develop alongside residential areas.
Economic location factors The location of different land uses reflects economic needs. Heavy industry locates near ports, high-income housing develops on scenic sites, and commercial retail tends to locate along busy route centres.
Growth attraction These nuclei attract growth as similar activities are drawn to each other. Manufacturing industries are attracted to industrial estates on city outskirts, hoping to form links with other industries there.
Social stratification The model recognises separate lower-, middle- and upper-class areas, with higher-class residential areas located away from heavy manufacturing, close to business and commercial districts.
Limitations of the multiple nuclei model
The theory doesn't fit all towns and cities perfectly, as many factors can alter urban area characteristics in different parts of the world. However, many large urban areas and conurbations do fit this model, such as Dublin City.
Case study: Multiple nuclei theory in Dublin
Applied Example: Multiple Nuclei Theory in Dublin
Dublin provides an excellent example of how the multiple nuclei model applies to a real city, demonstrating the theory's relevance to modern urban development.
Central Business District
Dublin's CBD stretches across main shopping areas from Grafton Street to O'Connell Street and Henry Street. Commercial areas including banks and insurance offices are located at Dame Street and College Green. The city centre remains accessible as all major transport routes meet here, making it the main commercial and financial centre of the Greater Dublin Area. The International Financial Services Centre (IFSC) is located along the redeveloped Docklands, with lower-class residential areas situated close to the CBD.
Multiple nuclei development
The Dublin region contains multiple nuclei that developed as the city expanded into nearby towns and villages. Each nucleus has its own business districts and retail areas. Towns on Dublin's outskirts maintained their own business districts and retail areas before being absorbed as the city expanded.
Examples include:
- Swords, Dundrum and Lucan - had their own business districts before city expansion absorbed them
- Adamstown, Tallaght and Blanchardstown - newer towns built with their own business districts and services for local residents
These nuclei are now self-sufficient, offering combinations of residential, economic, industrial and social services and facilities.
Location of services
The theory's principle that similar activities attract each other is evident in Dublin:
- Medical consultants have located along Fitzwilliam Square due to proximity to the city's hospitals
- Manufacturers are attracted to similar areas, seen along Dublin Port and in industrial estates along the M50, such as Sandyford Industrial Estate (south side) and Airside Industrial Estate (north side)
These industrial estates developed along the outskirts where they benefit from cheaper land and property prices.
Social stratification in cities
Social stratification describes the tendency of people of similar age, educational and economic backgrounds to live in the same areas of a city.
Social stratification occurs repeatedly in cities worldwide, where people of similar education status and earning power live in similar areas. This pattern makes certain parts of cities more desirable than others, generally reflected in housing prices. Homes in middle- and upper-class areas command higher prices than lower-class areas.
Housing quality differences
Housing in upper- and middle-class areas is typically larger and constructed with higher-quality materials such as better insulation and heating systems. Lower-class housing tends to be smaller and less energy efficient. This stratification is evident in developing countries through the presence of shanty towns and favelas.
Favelas - makeshift shelters used by the city's poor for shelter.
Case study: Social stratification in Dublin
Applied Example: Social Stratification in Dublin
Dublin demonstrates clear social stratification patterns that can be divided into broad zones by separating the city into east and west areas.
Geographic distribution
Eastern Dublin: Generally home to wealthier residents with higher income levels, living in middle-class and upper-class areas.
Western Dublin: Residential areas typically house either working class or middle class residents with lower to middle incomes.
Inner city areas: Mainly working class, including areas like Ballymun on the city's edge.
Housing types by social class
Higher-income areas: Houses are typically detached with large gardens (e.g., Foxrock)
Middle-income areas: Houses are detached or semi-detached, grouped together in housing estates with small gardens or large communal green areas (e.g., Deansgrange)
Lower-income areas: People often live in terraced houses or apartment blocks with no gardens or green areas (e.g., former tower blocks in Ballymun)
Changes over time
The Celtic Tiger era altered Dublin's social stratification dynamics somewhat. Increased wealth led to some working-class areas becoming middle class, as working-class children gained opportunities to attend third-level education and achieved middle class status. Many former council-owned residential developments became privately owned.
However, access to third-level education in Ireland is becoming more expensive and serves as an indicator of socio-economic stratification. Children from middle- and upper-class families are seven times more likely to attend third-level education than children from less wealthy backgrounds.
Age-based social stratification
Social stratification can also be age-based, with people of similar age groups living in certain city areas:
- College students: Large populations live in rented accommodation close to colleges and universities
- First-time buyers and young couples: Usually purchase in newer housing estates on urban fringes (e.g., Tallaght)
- Elderly residents: Usually found in older parts of urban areas (e.g., Terenure)
Key Points to Remember:
- Three main theories: Concentric zone (Burgess 1925), Sector (Hoyt 1939), and Multiple nuclei (Harris & Ullman 1945) models each explain urban land use differently
- All theories recognise social stratification - the tendency for people of similar backgrounds to live in the same areas, reflected in housing quality and prices
- Each model has limitations - they're based on specific time periods and locations, making them less applicable to modern cities with different transport systems and urban features
- Dublin demonstrates multiple nuclei theory - with a central CBD plus multiple business districts that developed as the city expanded into surrounding towns
- Transport links are crucial - Hoyt's sector model emphasises how cities develop along major transport routes, while the multiple nuclei model shows how accessibility affects business location