The Core frame model is a model showing the

urban structure Urban structure is the arrangement of land use in urban areas, in other words, how the land use of a city is set out. Urban planners, economists, and geographers have developed several models that explain where different types of people and busine ...

of the

Central Business District A central business district (CBD) is the commercial and business centre of a city. It contains commercial space and offices, and in larger cities will often be described as a financial district. Geographically, it often coincides with the "city ...

of a town or city. The model was first suggested by Ronald R. Boyce and Edgar M. Horwood in 1959. The model includes an inner core where land is expensive and used intensively, resulting in vertical development. This area is the focus of the transport system and has a concentrated daytime population. The outer core and frame have lower land values and are less intensively developed.Goodall, B. (1987) The Penguin Dictionary of Human Geography. London: Penguin. The various land uses are linked to the

bid rent theory The bid rent theory is a geographical economic theory that refers to how the price and demand for real estate change as the distance from the central business district (CBD) increases. It states that different land users will compete with one ano ...

. The zone of assimilation and zone of discard are together called the

zone of transition Zone of transition is the area between the factory zone and the working-class zone in the concentric zone model of urban structure devised by Ernest Burgess. The zone of transition is an area of flux where the land use is changing. In the core ...

See also

Notes

Further reading