Evolution of Urban Spatial Structure in a Mountainous City:Transforming from Linear Expansion along Valleys to Polycentric Urban Development
以重庆为例，基于遥感影像解译的土地利用数据，分析了1988-2001年和2001-2010年两个阶段城市空间结构演变，发现早期沿河谷和道路线性扩张，后期转向多中心发展，并探讨了自然、经济和制度等驱动因素。
Taking Chongqing as a case,with the help of ENVI,ArcGIS,and SPSS,this paper revealed the process of the urban spatial restructuring during the periods of 1988-2001 and 2001-2010,using methods of spatial analysis and statistical analysis based on land use data interpreted by remote sensing images.In order to discover the driving forces underlying,this paper analyzed natural,economic and institutional characteristics of Chongqing city.Results show that during the period of 1988 to 2001,Chongqing’s urban expansion was featured with the linear expansion along valleys near Yangtze and Jialing Rivers,as well as along major roads from Yuzhong District to outside.However,from 2001 to 2010,the urban expansion was dominated by the polycentric development and outer urban groups’growth.Finally,the driving forces of polycentric urban development were diverse in Chongqing,including the constrains of big mountains and rivers,population growth,growing development zones,urban planning revision and transit oriented development.