摘要
文章使用1990—2009年中国260个地级及地级以上的城市数据,采用位序—规模法则、K值、GIS等方法,分析了中国城市扩张的空间格局及演变特点,并引入K'衡量城市空间扩张的效率。主要结论有:①城市扩张呈现明显的阶段性特点,主因是国家城市化战略的调整。2000年后城市发展趋向不均衡,城市体系发生动荡变化。这种变化应该高度重视。②城市空间规模变大的趋势更加显著,城市类型向更高级别推进,城市区域空间分布极不均衡,城市所在地区差异导致城市扩张进程分化,城市地位也随之变化。③各地区城市扩张速度有显著差异,省级中心城市的扩张前慢后快,城市扩张形成区域性集团。城市扩张与城市人口增长不协调,且有拉大趋势,整体上城市空间扩张应当放缓。④不同阶段,不同类型、不同地区城市扩张的效率有很大差异,扩张效率的高低提示各城市在城市扩张上应选择适宜的发展道路,并制定相应的政策和措施。
We select the data of China＇s 260 cities from 1990 to 2009; analyze the characteristics, the spatial structure and evolution of urban expansion based on rank-size law, the index of and GIS. Then we introduce an index of to evaluate the efficiency of urban expansion. The research results are as follows： （1） Urban expansion has obvious stage characteristics, mainly due to the adjustment of national urban strategy. Urban development trend after 2000 is not balanced and urban system has turbulent changes. （2） The trend that urban built-up areas are getting larger is more significant. Urban type is promoted to a higher level. City regional spatial distribution is extremely uneven. The regional differences of the city situated lead to urban sprawl, thus the city status also changes. （3） The urban growth rate of all regions was significantly different. The provincial capital city expansion is slow at first but fast at last. The urban expansion of many cities formed a regional group. Urban rapid expansion mismatches with the urban population growth. The overall urban rapid expansion should be slowed down. （4） The efficiency of urban expansion is very different at different stages. The level of expansion efficiency pointed out that the urban built-up expansion in different city should choose appropriate development path, and develop appropriate policies and measures.
出处
《经济地理》
CSSCI
北大核心
2012年第6期37-45,共9页
Economic Geography
基金
国家自然科学基金项目(41071082)
教育部人文社科重点研究基地重大项目(2007JJD790151)
关键词
建成区面积
快速扩张
空间格局
效率
中国城市
built-up area
rapid expansion
spatial structure
efficiency
Chinese cities
作者简介
安乾（1982-），男，河南兰考人，博士研究生。主要研究方向为区域经济学。E—mail：alenl982@sina．com．cn。
通讯作者：李小建（1954-），男，河南盂津人，教授，博士生导师。主要研究方向为经济地理学。E-mail：xjli@henu．edu．cn。
