中文摘要：

通过建立城市人居环境竞争力综合评价指标体系，运用主成分分析计算了辽宁省14个省辖市在1994、1999、2004和2009年4个时间断面上城市人居环境竞争力的主成分得分和综合得分，并对人居环境竞争力进行评价和排序，依据评价结果揭示了辽宁14个城市人居环境竞争力的综合演变、主成分演变趋势，进一步研究了城市人居环境竞争力的时间演变和空间演变。通过分析4个时间断面上的城市人居环境竞争力的等级分布图和空间插值效果图，揭示辽宁14个城市人居环境竞争力的空间分异和空间扩展的演变规律。

英文摘要：

The paper established an evaluation index system of the urban settlement environment competitiveness of Liao ning Province, and used principal component analysis to evaluate the urban settlement environment competitiveness in 1994, 1999, 2004 and 2009, respectively. Moreover,the paper studied time evolvement of the urban settlement environment competitiveness. The paper used calculated results of the urban settlement environment competitiveness competit iveness, space expression method and space interpolation method to research space evolvement of the urban settlement environment competitiveness of Liao ning Province.The paper selects brief and exact spatial interpolation method IDW （ Inverse Distance Weighted） to research the evaluation situation of spatialpatulous of the urban settlement environment competitiveness. Numerical value of interpolation points that are calculated will be automatically created in the urban settlement environment competitiveness map, and the effect maps are formed about the urban settlement environment competitiveness.