Identification of Spatial Influence Sphere of Urban Agglomerations in China Based on Urban Hinterland Delimitation
Received date: 2013-09-16
Revised date: 2013-01-29
Online published: 2014-03-10
Copyright
The delimitation of the sphere of spatial influence of urban agglomerations is essential for understanding the interrelationship between city and its hinterland,as well as city and city. However,to date,there is no coincident,efficient,and credible methodological system and set of techniques to identify Chinese urban agglomeration. In this research,the principal components analysis method was used to calculate urban nodality index with the indicators system. With the application of raster cost weighted distance method and k-order data fields,this paper attempts to comprehensively measure the regional accessibility and the spatial field of cities at prefecture level or above in China. Then the spatial field intensity of cities in 2010 was measured by the field model and the urban hinterlands were divided by using the maximization principle of the field strength. Finally,the spatial influence sphere of urban agglomerations were divided according to the urban hinterlands and under the correlation analysis. The results show that it is simple and vivid to measure the urban hinterland area of prefecture-level cities or above and the spatial influence sphere of urban agglomerations by using the GIS tools. The introduction of field-strength model takes full account of the dual effects of the city comprehensive scale and road traffic conditions within the range of urban hinterlands,which is closer to reflecting the actual urban development. According to the result of delimitation,it would form“11+9+3”national urban agglomerations spatial structure system comprised of 11 compliance urban agglomerations,9 urban concentrated areas,3 urban agglomeration potential areas and“β”shaped urban agglomerations continuous band.
Key words： Urban agglomeration; Urban hinterland; Spatial field; Accessibility; China.
Jinghu Pan , Weisheng Liu . Identification of Spatial Influence Sphere of Urban Agglomerations in China Based on Urban Hinterland Delimitation[J]. Advances in Earth Science, 2014 , 29(3) : 352 -360 . DOI: 10.11867/j.issn.1001-8166.2014.03.0352
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