Abstract
Since it implemented open-door policies, China has become the fastest growing economy in the world, and its urbanization level has steadily improved. Taking a special economic zone as the object of study, this paper delineates the urban development boundary of the Central Urban Area of Doumen. Using multiple models and methods, the urban development rigid and elastic boundaries are delineated separately, with the rigid boundary serving as the premise and foundation for delineating the elastic boundary. The results are as follows. First, the scale of the urban development rigid boundary is 79.60 km². Moreover, the scales of the urban development elastic boundaries in 2020 and 2026 are 24.51 km² and 28.53 km², respectively. Second, by delimiting the urban development elastic boundary, the compactness of urban land will be improved. Third, the urban development boundary of this paper is reasonable in theory. This paper suggests that the urban development boundary can curb urban sprawl and guide rational urban development, which is conducive to optimizing an urban spatial layout.
Highlights
Since adopting reform and opening up in 1978, China’s urban areas have rapidly developed, which play an important role in promoting economic growth, adjusting the industrial structure and stabilizing the employment level [1]
According to the results of the suitability evaluation, the most and the more suitable construction areas were considered as preliminary spatial ranges for the urban development rigid boundary
We find that the built-up scale of urban planning may be somewhat larger than actual urban development in 2020
Summary
Since adopting reform and opening up in 1978, China’s urban areas have rapidly developed, which play an important role in promoting economic growth, adjusting the industrial structure and stabilizing the employment level [1]. High-speed urban development is basically an extension of external expansion, which leads to a series of problems including threatened food and ecological security (such as farmland erosion and forest degradation), reclamation of river land, and low efficiency of land use and urban sprawl [5,6,7]. In this case, we have to change the pattern of urban development, control the urban scale and guide rational urban development, because curbing excess urban sprawl and working toward sustainable planning strategies are urgent needs [8,9,10]. In recent years, delimiting urban development boundary has inspired great attention from government and researchers, which has a strong urgency
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