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机构地区:[1]南京师范大学地理科学学院,江苏南京210046 [2]南京晓庄学院地理系,江苏南京211171
出 处:《长江流域资源与环境》2014年第12期1641-1648,共8页Resources and Environment in the Yangtze Basin
基 金:国家自然科学基金项目(40071037,40771075,40871081)
摘 要:以南京都市圈为例,选取1993、1999、2005和2011年4个典型年份,运用ArcGIS的空间分析功能和引力模型,计算南京都市圈的可达性、经济联系量和经济联系隶属度,深入研究南京都市圈空间联系格局和空间联系方向的演变。研究结果表明:(1)南京都市圈可达性改善显著,平均可达性提高明显,但各城市可达性提高的幅度差别较大;(2)南京都市圈经济联系日益增强,经济联系格局由点轴结构向网络结构演变,南京成为区域经济联系中心城市;(3)从经济联系隶属度分析来看,南京是区域空间联系的集聚中心,与其它城市形成了众星捧月的空间联系格局。The Yangtze River Economic Belt is becoming a national strategy and the Yangtze River Economic Belt will become the economic backbone of China.Nanjing metropolitan area is an important member of the Yangtze River Economic Belt.Nanjing metropolitan area is the fringe of the Yangtze River Delta city group and Wanjiang City Belt.The development of Wanjiang City Belt depends on Nanjing metropolitan area to be in line with the Yangtze River Delta city group actively,so the development of Nanjing metropolitan area is of great importance.Nanjing metropolitan area includes eight cities,and they are Nanjing,Yangzhou,Zhenjiang,Huai-an,Ma-anshan,Wuhu,Chaohu and Chuzhou.Taking the Nanjing metropolitan area as an example and choosing four typical years of 1993,1995,2005 and 2011,the article uses the Spatial Analyst function of ArcGIS and gravity-model to calculate the accessibility and economic linkage and the regional economic linkage gradation of Nanjing metropolitan area.Then the article studies the evolution of the regional economic linkage pattern and the maximum economic linkage direction of each city in Nanjing metropolitan area.Results are shown as follows.(1)The accessibility of Nanjing metropolitan area is improved evidently,and the average accessibility of Nanjing metropolitan area is improved obviously,too.But the increase amount of accessibility of each city is different.(2)The economic linkage of Nanjing metropolitan area is strengthening increasingly.The economic linkage pattern of Nanjing metropolitan area is changed from point axis pattern to network pattern and Nanjing is becoming the center city of the regional economic linkage of Nanjing metropolitan area.(3)Studying from the regional economic linkage gradation,Nanjing is the spatial linkage agglomeration center of Nanjing metropolitan area.The economic linkage pattern of Nanjing metropolitan area is around Nanjing.Nanjing is just like the moon and other cities are like the stars.
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