以陕西省的10个地级市:西安市、铜川市、宝鸡市、咸阳市、渭南市、汉中市、安康市、商洛市、榆林市和延安市为研究对象,选取了社会经济发展水平、人民生活水平、对外经济和联系及基础建设和交通四个方面共24项指标,运用SPSS16.0软件用主成分分析法研究城市竞争力,得到城市竞争力得分的情况,以最短距离原则选择距离指标、时间指标和通达性系数来衡量城市的通达性水平的高低,得到不同速度下通达性水平的空间格局,计算各城市以一定速度在1、2、3、4小时内能到达其他城市的数目,并对竞争力得分和通达性水平的特点进行分析,最后比较分析二者之间的联系。城市竞争力和通达性水平的空间格局基本一致,都是呈现以关中地区为中心的"核心-外围"的格局,核心即西安市和咸阳市,由核心向外围城市的竞争力水平和通达性水平逐步降低。通达性与竞争力水平二者相互促进,实现良性循环。

The article takes ten cities of Shanxi province for the objects of study: Xian, Tongchuan, Baoji, Xianyang, Weinan, Hanzhong, Ankang, Shangluo, Yulin and Yanan. It selects 4 aspects, such as the level of social and economic development, living standard, external economic and connection, infrastructure and transportation, 24 indexes all together and uses SPSS16.0 software with principal component analysis to study the competitiveness of the cities, obtaining the competitiveness scores. It selects distance index, time index and accessibility coefficient by the principle of shortest distance to measure the accessibility, getting the spatial pattern of the accessibility caused by different speeds and the numbers of cities that can be connected within hours. At last, it analysises the competitiveness scores, the level of accessibility and the relation between them. The spatial pattern of urban competitiveness and the level of accessibility takes Guanzhong region as the center showing "core-external" trend, and the cores are Xian and Xianyang, the competitiveness and the level of accessibility reduce progressively from the cores to surroundings. The level of accessibility and competitiveness enhances each other and achieves virtuous circle.