Analysis on the Evolution of Urban Spatial Patten in Bohai Rim Region in the Context of Regional Integration
Wang Mingli, Dai Hongweia, Wang Jue

Abstract
Based on the previous studies on the evolution of urban spatial pattern using population indicators, this paper estimates the regional primacy and Zipf index of Beijing by combining several indicators such as economy (GDP), population (permanent population) and land (built-up area), and makes a comparative analysis on the changes of urban spatial pattern in the Bohai Rim region from 2002 to 2017 from different perspectives. It is found that in the process of regional integration in the Bohai Rim region, the population mobility is close to Zipf’s law; however, the economic size tends to be concentrated in top cities and urban land area tends to be scattered, showing two contrary relative population mobility trends. Accordingly, this paper puts forward policy suggestions on promoting the coordination of economic factors, land area and population mobility, so as to enhance the efficiency of economic development.

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