Abstract:

The characteristics of the profit-oriented land price temporal-spatial evolution in Hefei from 2007 to 2011 are analyzed using the GIS spatial analysis method. Results show that the temporal-spatial evolution of land price in Hefei is characterized by circular-layered expansion, axial-gradient-form extension, spatial variation and spatial differentiation. Moreover, aided by remote sensing images, this paper analyzes the characteristics of spatial evolutions resulting from previous versions of the overall urban plan for Hefei and the 2006 version of the urban master planning for Hefei. According to the analysis results, the spatial structure and characteristics of the urban land price in 2007 are the important manifestation of the urban spatial structure brought about by the four versions, made up between 1956 and 2001, of the overall urban plan and their implementations, while the 2006 urban master planning and its implementation are the important factors influencing the spatial-temporal evolution of urban land price between 2007 and 2011. The expansion, displacement and jump of urban center lead to the circular-layered expansion and local spatial variation of land price; the leading direction of urban development results in the formation of concentration axis in the peak land-price area; the evolution of urban spatial structure results in the spatial differentiation of land price; the layout of the generation of newly emerged space results in the spatial differentiation and spatial variation of urban land price; and the spatial-temporal density of land transfers results in the spatial variation of urban land price. Therefore, the spatial-temporal evolution of land price is significantly influenced by the expansion and displacement of urban center, the alteration of the leading development direction, the evolution of spatial structure and form, the generation of new urban space, and the space selection in the implementation of the urban master planning. And the spatial characteristics of the temporal-spatial evolution of land price are an important basis for the adjustment of the strategies for urban space development. Therefore, the response strategies in the adjustment of urban space are: to strengthen the generation of new urban space, to displace the industrial zones in the leading direction of urban development, to establish new functional groups by including recreation center, to construct major infrastructure and public service facilities based on the urban-space transformation and the land price temporal-spatial evolution, to optimize the urban space structure featuring multiple centers and multiple groups, and to achieve gradual development of each sub-area.

Key words: urban master planning, GIS spatial analysis, remote sensing image, temporal-spatial evolution of land price, spatial evolution, Hefei