Multi-sectoral urban growth in space and time: An empirical approach

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Abstract
Kellerman A. and Krakover S. (1986) Multi-sectoral urban growth in space and time: an empirical approach, Reg. Studies 20, 117–129. Studies of urban growth may be pursued along contextual and compositional lines, concentrating on one or several sectors. This paper compares the distribution of growth of several economic sectors in an attempt to trace and analyse their spatiotemporal sequence of decentralization. The paper applies a polynomial regression model capable of dealing with detailed spatiotemporal series. The application of the model to the urban field of Philadelphia shows population to be the farthest spread followed by manufacturing industries. Despite, or probably because of, their extensive spread, both sectors display low levels of growth. The other economic sectors present high cumulative peaks of growth at a distance of about twenty to twenty-five miles from the city centre, though they differ in the pace of the peak's spread and in the magnitude of its growth. Far greater differences among the economic sectors are displayed regarding the pattern of distribution of growth in the outer area of the urban field. The results are interpreted as continuing deep-rooted trends of the urban spatial economy coupled with structural changes.

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