摘要
均一区域城市土地集约利用评价的理论与方法已经趋于完善,在此基础上进行了全国地级城市土地集约利用评价。由于区域的差异性,首先开展了城市分类,然后再进行评价。在研究过程中,收集了与城市分类与集约利用评价相关的指标,主要包括建设用地与相关的社会经济指标。然后采用层次聚类分析的方法将282个地级城市分成了3类,采用主成分分析的方法分别对每一类型城市进行分析,得出每类型城市主成分的组数、每组主成分的贡献率及指标的因子值,分析了各类型城市主成分及指标因子值的差异。最后计算每类型城市的集约利用分值,根据集约利用分级表确定了全国各类型城市的土地集约利用的级别。
The theory and method of evaluating city land intensive improve greatly in the homogeneous areas, based on it the evaluation of city land intensive allover the country was conducted. Because of the differences among cities, this evaluation was based on city classification, in the process of evaluation, firstly, the indicators of city classification and intensive land use were collected, which mainly included city construction land and relative social-economic data. Secondly, the method of hierarchical classification was adopted to divide 282 cities into 3 kinds, the first was mainly capital cities and vice-province cities; the second was mostly eastern coastal cities and some middle cities; the third was western cities and part of middle cities. Thirdly, principle component analysis was taken to get the numbers of principle component, dedicative ratios of each principle component, and indicator values of each kind of cities, then, the differences of numbers of principle component, dedicative ratios of each principle component, and indicator values of each kind was investigated. Lastly, the intensive values of each kind city was calculated, and then, the grade of each city was determined.
出处
《土壤》
CAS
CSCD
北大核心
2009年第2期288-294,共7页
Soils
基金
“十一五”国家科技支撑计划项目“区域土地集约利用与节地关键技术研究”(2006BAB15B303)资助
关键词
集约利用
地级城市
城市分类:层次分析
Intensive use, City, City classification, Principle component analysis
