以吉林省9个地级市市区为研究对象,从土地投入强度、利用程度、利用效益和生态环境集约度四个方面构建城市土地集约利用度评价的指标体系。采用SPSS 13.0的全局主成分分析法和聚类分析方法对所属9个地级市2000-2009年的土地集约利用度进行综合评价,并分析其空间分异特征。结果表明:2000-2009年吉林省城市土地集约利用度提高,在空间上呈现为较强的极核效应,同时存在明显的东、中、西差异,10 a间省内城市土地集约利用度总体差异呈现波动性缩小趋势。并从产业结构、区域发展基础、经济发展水平、城市规模等方面分析了差异产生的原因,得出:影响吉林省各地级市土地集约利用的因素是复杂的,区域自然条件和地理环境差异只是基底条件,经济发展差异对土地集约利用分异作用较大。

Taking nine cities of the Jilin Province as sample, this paper tries to explore the comprehensive evaluation system of regional urban land intensive utilization from the aspects of land use intensity, land use degree, land use benefit, and eco-envircnmental intensiveness. Using global principal components analysis of SPSS 13.0, the lever of urban land intensive utilization from 2000 to 2009 was evaluated.Then based on the scores of all factors, its variation characteristics in space was summarized using cluster analysis . The results showed the level of urban land intensive utilization of Jilin Province improved from 2000 to 2009. The regional differences of urban land intensive utilization were obvious, but its trend of change was reducing instablely. The urban land intensive utilization displays as a core in space, the level of Changchun's land intensive utilization is much higher than that of other cities. The spatial difference also exists as that of cities in central of Jilin is the highest, that of cities in western part is the lowest and the eastern cities having the medium level. According to the spatial difference, this paper analyses the reasons from the aspects of regional environment, scales of cities, economic growth and industrial structure. Based on the analysis, it can conclude that there are many factors affecting the urban land intensive utilization of Jilin Province, the difference of development environment is the basic reason, economic development level is the most important external factor affecting the level of urban land intensive use. The level of urban land intensive utilization is higher in developed areas, like Changchun and Songyuan higher than other cities.Finally, this paper proposes that Jilin Province should excavate the potential of urban land intensive utilization, and avoid the expansion of urban land rapidly. So in the future, Jilin Province should make full use of urban land efficiently and reasonably, and take the way of sustainable development.