Paper 2) Urban Environments Flashcards
Urbanization definition
An increased concentration of people in urban areas
Urban growth definition
The physical expansion of cities (economic or demographic - the statistical characteristics of human populations)
Urban definition
An area with a large concentration of people in a town or a city. The opposite to rural.
Where is the majority of contemporary urbanisation happening?
-Africa and Asia
-taking place in large towns and small cities
How many years did it take to achieve the first one billion urban dwellers and second billion urban dwellers?
-10,000 years - 1 billion
-25 years - 2 billion
-shows rapid urbanisation
Suburbanisation definition
The outward spread of the urban area, often at lower densities compared with the older parts of a town or city
Counter-urbanisation definition
The movement of people and employment from major cities to smaller cities and towns
Agglomeration definition
The concentration of people and economic activities at favourable locations, such as river crossing points
Characteristics of CBD
-big shopping complex
-offices
-major transport links
-lack of green space
Characteristics of the inner city
-dense, terraced house
-grid iron road layout
-industrial estates
-lack of open space
Characteristics of the inner suburbs
-low density housing
-semi detached housing
-large gardens
-cul-de-sacs
Characteristics of the outer suburbs
-small gardens
-open spaces
-parks and golf courses
What about suburbs that appeal to new residents
-more space
-improvements in transport allows people to move easily between new suburbs town centers
-declines in the quality of the residential environment near the centre
Causes of counter urbanisation - push factors
-noise pollution
-higher crime rates
-overcrowding
-parking shortages
-traffic congestion
-old housing
Causes of counter urbanisation - pull factors
-larger houses with gardens
-pleasant scenery and countryside
-out of town shopping malls
-lower crime rates
-safer for children
-less pollution
Social impacts of counter urbanisation
-more shops and services as more number of people
–maybe not: incomers may be elderly/ affluent - send children to prestigious schools elsewhere
–might change services: post office/ pubs –> boutiques/ restaurants
-culture clash - incomers may object to long-established everyday aspects of country life (fox-hunting)/ controversial land-use practices of local farmers (excessive use of nitrates, hedge-row removal)
-community disintegration - children of established residents cannot afford to buy a home. Over time, out-migration of original resident’s children
-historical ‘authenticity’ can be lost if too many changes
Environmental impacts of counter urbanisation
-urban city centres may decline in popularity as people move away, lead to unemployment, decline
-the demand for housing has grown in many villages and small towns, growth of new estates - House prices have risen due to the increase in demand
-increased pressure on greenfield land as the rural-urban fringe is blurred
-Congestion - infrastructure cannot cope with the increased demand. Difficulties for farmers moving slower vehicles on country roads and increase air pollution.
Political impacts of counter urbanisation
-Population decline in the city reduces council tax revenue, so there are less funds available for local services which may decline in quality e.g. schools, healthcare, waste collection, leisure facilities.
-Hostility and vandalism - The older rural community may even object to newcomers in an openly hostile manner
Factors resulting in high rates of urbanisation in lower and emerging countries
-high natural increase - the birth rate far exceeds the death rate
-push and pull factors - leading to high rates of rural-urban migration
-most new economic development in these areas is concentrated in the big cities
-Economies of Scale - as there are less smaller cities, megacities can save money as everything is closer together. They save on transport and communication between people and businesses
Reasons to leave the countryside - push factors
-food shortage and people cannot be supported in this area
-government investment is lacking in this area. There are few services
-a natural disaster has taken place, e.g. floods in Bangladesh
-forced migrations
-farmers in the local area mechanise their farms. There is now no need to employ as many farm labourers
-plots of land are divided up amongst children making them too small to farm
-a crop failure due to overgrazing, e.g. desertification in Nigeria
Reasons to move to the city/ urban areas - pull factors
-there is a hope for improved housing, better jobs and more reliable food supply
-government investment tends to be in the cities
-these are more services, e.g. schools, hospitals
-better quality of life
The Clark Fisher model
-draw it
Urbanisation pathway model
-draw it
Photochemical smog definition
A mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities.
Congestion definition
A condition on transport that is characterised by slower speeds, longer trip times, and increased vehicle queueing.
Shanty towns
A squalid and overcrowded urban street or district inhabited by very poor people