中原经济区城市流强度时空变化分析

以中原经济区为研究区域,选取2000年和2009年两个时间截面,采用城市流强度模型,对中原经济区28个城市的城市流强度进行测度,根据计算结果将中原经济区28个城市的城市流强度分为高水平平稳型、较高水平增长型、较高水平缓增型等14种类型.结果显示,2000—2009年,中原经济区城市流强度空间整体格局保持不变,呈现围绕郑州、洛阳的圈层结构;中原经济区北部围绕郑州和洛阳形成城市流强度高梯度区域,而南部由于处于经济区边缘,且处于省际地区,为城市流强度低梯度区域,故在南北方向上北高南低;东西方向上,东部受经济近邻效应影响明显,而西部紧靠西部欠发达地区,故城市流强度东高西低;随着时间的变化,经济区核心城市的溢出作用开始凸显.

Analysis of temporal-spatial changes of urban flow intensity of Central Plains Economic Region

By selecting selected 2000 and 2009 as two time sections, this paper used City stream strength model to measure 28 cities in Central Plains Economic Region which is the research area. Ac- cording to the result of calculation , the author divided the 28 cities in Central Plains Economy Region into 14 levels including high level stable, high growth, high level slowly increasing type and so on with their city stream intensity. From 2000 to 2009 ,the spatial pattern of the city stream intensity of 28 cities in the the area of Central Plains Economy Region remain unchanged, showing a ring struc- ture around the Zhengzhou and Luoyang area. The north of Central Plains Economic Region surroun- ded by Zhengzhou and Luoyang formed the high gradient region of city stream strength,but southern region is the low gradient region of city stream strength located in peripheral economic zone and pro- vincial border region . In the north-south direction, the city stream strength of northern region is su- perior than the southern; In the east-west direction ,eastern region is affected by proximity effect significantly,while western region is close to less developed regions, so the city stream strength of eastern region is superior than the western, The spillover effect of core cities becomes increasingly ap- parent with time.