The Extension Characteristics and Dynamic Mechanisms of Residential Space in Changchun since 1990

Based on the 1995, 2003, 2008 years' land utilization present situation chart, the 2011 year remote sensing images of Changchun city and related statistical yearbook, combining with GIS software and SPSS statistical tools,utilizing various measure methods, this article mainly studies on the extension characteristics of residential space in Changchun city. The conclusions show that:(1)The overall extension mode of residential space is given priority to"enclave type + shaft type", but different stages have different characteristics;(2)The whole development of residential space has experienced large- scale development process in different directions and stages;(3)At the present stage, the residential space is mainly focused on the core area of Changchun city, but the characteristic of gradient distribution has appeared significantly and the suburbanization has already occurred. On the basis of the above research, the paper builds the index evaluation system of the dynamical mechanism of residential space extension and uses a method of the qualitative and quantitative analysis to study the influence degree of the specific factors force. Its dynamic mechanisms including the push of industrialization, the increase of the level of economic development, the improvement of traffic conditions, the regulation of government, the reform of land system and the function of the urban planning.