中文摘要：

基于西安市2011年开盘在售普通住宅数据，利用GIS技术对其空间格局进行研究。发现西安市住宅价格空间格局整体上呈现出两个由内而外圈层递减分布，在曲江新区和未央区分别出现了两个价格极核。住宅价格变化幅度区域差异明显，在东西方向上呈现出较强的由中心向边缘递减的趋势；而南北方向的此种变化则不甚明显。以此对西安市各城区的区域价值进行剖析。未来西安市住宅开发活动可结合本文研究的各片区的区域价值进行针对性的加强：南部住宅发展与人文景观结合；东部与生态结合；北部与宏观政策以及开发区发展；西部与西成一体化的大框架结合，共同提升西安市的区域价值。

英文摘要：

Residential functions are the basic functions of the city. Associated with urban renewal and develop- ment, the structure of residential space and the regional value continue changing. Overall, the micro-level is reflect- ed in the adjustment of building structure, style and community functional structure, the macro-level shows fluctua- tions in the investment value and regional value with the processing of reconstruction of the urban space. The hetero- geneous nature of residential space not only shows that the regional conditions influence the regional value, but also promotes the agglomeration and diffusion effects over the entire space, and then impacts the changes in the structure of urban space. Therefore, exploration on the distribution of urban residential space and tapping its regional value have an important role in the grasp of urban spatial structure and urban development. This paper analyzed the spatial variation of commodity housing prices of Xi＇an City, Shaanxi Province, China in 2011 by means of geostatistics and its causes were discussed from the perspective of urban regional value. The impact of subway construction on com- modity housing prices was further explored. The results show following four aspects. First, the housing prices of Xi＇ an decrease from inside to outside of the circles with the Qujiang New District and the Weiyang District as a dual polar. Second, the spatial variation of changes in housing prices is significant. The decreasing trend from inside to outside is more obvious on the east-west direction than that on the south-north direction. Third, the regional values of the leading housing prices are found different in various regions of Xi＇ an in the regional value analysis. Cultural value is dominant in the south area of Xi＇ an. Comprehensive value is higher in the center and lower in the western area. Eastern area has more comparative advantages in the ecological value. Northern area is more competitive in the eco- nomic value because of policies. And great potential f