省际边缘区经济差异是区域经济差异研究关注的新领域。论文采用全局与局部空间自相关分析方法,对1996~2005年淮海经济区经济差异的时空特征、趋势及驱动机制进行了初步探索。结果表明:①淮海经济区发展水平相似的县域在空间上两极分化并集聚的态势与经济差异的演化趋势基本一致,表明空间极化成为该区域空间结构的演变趋势;②HH型县域显著向鲁南集中,LL型县域显著向皖北、豫东集中,表明东西差异成为淮海经济区经济差异的主要表征;③包括投资能力、增长速度、产业结构等在内的经济动力机制、空间作用机制、边缘区发展政策、省际边界阻隔机制等是淮海经济区经济差异变动的主要驱动机制。

The economic differences of provincial border-regions is a new research field of regional economic discrepancy. Based on comprehensive economic data of county level in Huaihai economic zone during the period of 1996-2005, using a global and local spatial autocorrelation, this paper carries out a preliminary exploration of the spatio-temporal pattern features, evolution trend and driving mechanism in this zone. The results are shown as follows. First, as for the counties similar at development level in Huaihai economic zone, the trend of polarization and congregation is consistent with evolution trend of economic diversity, which indicates that spatial polarization becomes the spatial structure evolution tendency in Huaihai economic zone. Second, during 1996-2003, the regional economic disparities in Huaihai economic zone, as well as inner economic disparities of the four regions, continue to expand with fluctuation, and the inner differences of Subei and Yudong regions are the main contributor to the changes in Huaihai economic zone. Since 2004, economic development disparity in Huaihai economic zone presents a slow expanding tendency, however, the inner economic differences of the four regions are obviously showing a east to west gradual expanding trend. Thirdly, H-H counties obviously concentrates to Lunan, and L-L counties obviously concentrates to Wanbei and Yudong. The result indicates that the economic diversity between the east and the west becomes the main token discrepancy of economy in Huaihai economic zone. Finally, the variation of the economic discrepancy in Huaihai economic zone is driven by many economic factors, such as investment ability, growth rate and industrial structure, as well as the influence of development policies of border-regions and the obstructing effect of provincial borders.