EVOLUTION OF ECONOMIC DEVELOPMENT DISPARITIES IN HUAIHAI ECONOMIC ZONE
以淮海经济区126个县为单元，用泰尔指数测量省际边界区域的经济发展差异，发现省际间差异是总体差异的主要来源。
126 counties of Huaihai Economic Zone are taken as research units in the paper. The economic development disparities of Provincial Border-Regions are measured quantitatively by Theil indices. Based on a hierarchical structure of three-level measurement, region-province-prefecture, the paper decomposes overall regional inequality into three components between-province, between-city and within-city inequality components. After studying evolution of economic development disparities, this paper obtains conclusions as follow: the most important contribution of recent Huaihai Economic Zone economic development disparities has been identified with the Theil sub-index of between-province inequalities, which is far more significant than the between-city and within-city inequalities components, thus has been recognized as the first and foremost important contributor of Huaihai Economic Zone regional disparities.