中国城市土地利用集约度时空变异分析

研究目的:研究中国城市土地利用集约度的时空变异规律特征,用来宏观指导城市土地资源的利用.研究方法:综合评价法,秩相关系数法,聚类分析法.研究结果:(1)1996-2002年中国大多数地区城市土地利用集约度得到提高,包括福建省、河北省等,而以辽宁省、四川省为代表的10个地区则出现下降趋势,其中以安徽省下降最为显著;(2)东、中、西部地区城市土地利用集约程度存在明显的递减趋势,其中上海市、北京市最高,甘肃省最低;(3)人口变化是城市土地利用集约度最独特、最具活力的驱动力,政策、经济和技术因素是重要的外部驱动力.研究结论:应用综合评价法进行城市土地利用集约度评价,其评价结果与现实情况基本吻合,具有一定的可行性.

Spatial-temporal Variance of Urban Land Use Intensity

The purpose of the paper is to analyze the spatial-temporal variance of urban land use intensity in order to guide urban land use. Method of comprehensive evaluation, spearman rank relational coefficient and cluster analysis were employed. The results include: (1) During the six years from 1996-2002, the urban land use intensity had been increasing in most of the provinces (Fujian and Hebei, for instance) and had been decreasing in ten provinces (Liaoning and Sichuan, for instance) especially in Anhui; (2) Urban land use intensity was descending sharply from the east, the middle to the west part of China, in which Beijing and Shanghai were the tiptop and Gansu was the lowest; (3) Population change was the unique and most active driving force while the policy, economy and technical factors were the most important external driving forces. The method of comprehensive evaluation can be used to evaluate urban land use intensity, and the outputs fit into actualities and have certain feasibilities.