中文摘要：

以地级市为基本研究单元,利用加权重心模型、空间自相关等空间分析方法,对中部地区近20年的经济重心偏移、经济差异与集聚、经济增长等空间格局的演变过程加以分析。研究表明：（1）1991年以来,中部地区的经济重心总体上呈现出＂北→西南→西北→南＂方向＂M型＂偏移的趋势,中部地区西部与北部区域的经济发展情况要优于东部和南部;（2）中部各地区经济水平相似的地区集聚现象明显,热点主要集中在武汉、郑州等省会城市,并与周边区域形成城市群与经济增长极;（3）中部各地区经济增长聚现象明显,1998-2005年更强烈,2006年以后集聚情况减弱,从不同时间段来考虑,经济增长集聚整体上呈现出先增大后减小的趋势。

英文摘要：

Taking prefecture-level cities as the basic research units,using the weighted center of gravity models,spatial au tocorrelation and other spatial analysis methods,this paper analyzes the economic migration,economic disparities and con centration,economic growth,the evolution of spatial pattern of central China in nearly 20 years.The result as follows,firstly,since 1991,the central region’s economic center excursion trend shows in direction of＂M type＂in general which is＂north west → north → southwest → south＂,and the economic development in the western and northern of central China is prior than the east and south.Secondly,the level of regional economic agglomeration areas is similar and evident,which focused on hot spots in Wuhan,Zhengzhou and other provincial capital cities,and gradually form city groups and the economic growth pole.Thirdly,economic growth centralization in central China is evident,which is noticeable from 1998 to 2005,and becomes weakened after the year of 2006.Considering that in different periods,the economic growth centralization shows a trend of in creasing to decreasing.