It is possible in many cities to identify zones with a particular type of land use - eg a residential zone. Often these zones have developed due to a combination of economic and social factors. In some cases planners may have tried to separate out some land uses, eg an airport is separated from a large housing estate.
The concentric and sector models in one news article? The BBC is showing once again the possibilities available if only the United States taught more geography in the schools.
Tags: urban, models, unit 7 cities, APHG.
Via Seth Dixon