Evolvement of Spatial Pattern of Urban Economic Development in Yangtze River Delta
基于熵权TOPSIS法评价长三角城市1992-2010年经济发展水平，用马尔可夫链和探索性空间数据分析揭示空间格局演变，发现经济均衡增长和俱乐部趋同现象。
Based on the establishment of indicator system for evaluating regional synthetic economic development level,the urban synthetic economic development level in Yangtze River Delta is evaluated and compared in 1992,1998,2004 and 2010 by the entropy weighted technique for order preference by similarity ideal solution method( TOPSIS).And then,the evolvement of spatial pattern of synthetic economic development in Yangtze River Delta is discussed by Markov chains and Exploratory Spatial Data Analysis method( ESDA).Results show that:( 1) the urban economy has been growing rapidly,the relative difference decreases constantly and a balanced growing trend has emerged;( 2) there exists an obvious phenomenon of Club Convergencein urban economic development in Yangtze River delta and a significant trend of positive spatial correlation has been displayed,the similar units cluster in space,the leading economic development axis has been evolved from the early shape to the shape likeZ,then the shape like ∑,and the polycentric,multi-axis and balanced growing trend has emerged;( 3) And at last,it is pointed that the guidance functions of central cities,the organization functions of urban economic zones should be played in order achieve balanced,harmonious and integration development in Yangtze River delta in the future.