地理学报

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基于县域单元的江苏省经济空间格局演化

靳诚,  陆玉麒   

  1. 南京师范大学地理科学学院,南京 210097
  • 收稿日期:2008-11-28 修回日期:2009-03-30 出版日期:2009-06-25 发布日期:2010-04-15
  • 作者简介:靳诚 (1984-), 男, 江苏泗洪人, 在读人文地理学博士, 研究方向为区域空间结构与旅游地理学。E-mail: jincheng2431@163.com
  • 基金资助:

    国家自然科学基金项目(40771075)

Evolvement of Spatial Pattern of Economy in Jiangsu Province at County Level

JIN Cheng,  LU Yuqi   

  1. Geographical Science College, Nanjing Normal University, Nanjing 210097, China
  • Received:2008-11-28 Revised:2009-03-30 Online:2009-06-25 Published:2010-04-15
  • Supported by:

    National Nature Science Foundation of China, No.40771075

摘要:

通过ESDA相关分析,描述了20世纪90年代以来江苏省县域经济格局在空间上的变化状况。在经济总体空间格局上,江苏省县域经济发展水平表现出很强的空间自相关性,相似的地区在空间上集聚分布,热点区的空间结构多表现为以苏州、无锡为核心的圈状空间结构,且不断的向东南方向集聚。经济增长空间格局在空间分布上表现出更多的随机性和结构的不稳定性,热点区域切换频繁,没有明显的地理集中现象。江苏经济空间格局连续性和自组织性越来越强,空间分异格局中的随机成份在不断降低,而由空间自相关引起的结构化分异越来越显著,东北—西南方向经济发展的空间差异较小,而东南—西北方向经济发展空间差异最大。最后,将江苏省经济格局演化的驱动力归结为3个方面:历史发展基础、经济区位和区域发展政策。

关键词: 区域经济, 空间格局演化, 空间自相关, 空间变差函数, 江苏省

Abstract:

This article, taking Jiangsu Province as an example, describes the spatial changes of the diverse economy of Jiangsu at county level since the 1990s through the related analysis of ESDA as well as other tools such as Moran's I, Getis-Ord General G, Getis-Ord Gi and the function of variogram and its amount of fractal dimension as scale index. Based on four time discontinuity surfaces, some conclusions are drawn as follows. (1) Considering the overall spatial economic framework, the county economy of Jiangsu province shows a strong trend of spatial natural correlation. The similar areas cluster in space. The space structure of the hotspot distribution tends to be the circular space structure centered on Wuxi and Suzhou. (2) The development of the spatial economic growth framework is likely to be more stochastic and unstable in the aspect of spatial distribution. Hotspot areas are changing frequently without obvious appearance of geographical concentration. (3) According to the space-time mechanism, the Jiangsu spatial economic framework tends to be more continuous and self-organized, the random of the spatial differential pattern keeps decreasing and the mechanism of the structural differentiation caused by natural correlation in space is becoming more and more remarkable. The homogeneousness of economic development in the direction of northeast-southwest is typical for its relatively small spatial difference. As to the opposite direction, the spatial difference is great. (4) The driving force of the evolvement of Jiangsu economic framework can be identified through the following aspects: the basis of historical development, the economic location and the policies on regional development.

Key words: variogram, Jiangsu province, regional economy, evolvement of spatial pattern, spatial association