区位可达性的改善使得居民住宅区位选择范围扩大.地铁的兴建不但改善了区位可达性,同时也使得沿线住宅供需情况随之而变.根据城市经济学理论,运用竞租模型探讨了不同收入群体居住用地的分配情况,并分析了区位可达性改善而引发的竞租模型的变化,并推导出竞租模型变化的条件.采用统计列表分析的方法,以西安市地铁2号线开建时间节点前后两年半的145个楼盘数据作为样本进行分析,得到因地铁的兴建,沿线住宅户型产生的变化与分布情况,证实了理论分析的结论.%Location accessibility improvement can make residential location selection scope expand.Building of the metro can not only improve location accessibility, but the changing of the situation of residential supply and demand.According to the urban economics, and by using the bid-rent model, this paper discusses the different income groups of residence land distribution, pointing out that the location accessibility improvement changes the bid-rent model, and deduces the bid-rent model changing conditions.And then by using statistic analysis of 145 flats data of the 2.5 years before and after the building of Xi'an metro line No.2 the paper confirms the conclusion of the theoretical analysis.
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