中原经济区县际经济联系网络结构及其演化特征

发布时间：2018-04-27 08:26

本文选题：经济联系网络 + 空间格局　；参考：《地理研究》2014年07期

【摘要】：以中原经济区县级行政单元为网络节点,利用重力模型分别测算1996年、2010年226个节点间的经济联系强度。首先设定同一阈值筛选有效连接,分析网络连通能力变化;再设定不同阈值,分析网络结构及其演化特征。研究发现:①中原经济区经济网络连通能力有大幅度提高,经济发展和交通改善是网络稠密化和便捷化的主要原因。②节点连通能力差异很大,少数节点掌握着绝对的网络权力,郑州市等5个核心节点的地位尤其突出,其连线呈横向"T"字形状,建设"十"字形发展轴需要提升东部节点的连通能力。③网络呈明显的核心—外围结构并有极化趋势,核心区影响力和辐射力进一步增强,中原经济区只有提高边缘"洼地"节点连通能力才能加强与毗邻区的融合发展。④网络节点集聚现象明显,围绕次级核心节点形成了多个轴—辐结构子网络,"十"字形发展轴和"米"字形发展带的构建与发展,将有利于形成多重轴—辐结构嵌套的经济联系网络。⑤郑州市等高度值节点因较强的连通能力成为网络中的中介节点,一些度值不高的节点因处于"结构洞"位置上也具有较强的中介作用,在提高中介节点连通能力的同时,需要改善低度值中介节点所在小区域的经济和交通状况。
[Abstract]:Taking the administrative unit at county level in the Central Plains Economic Zone as the network node, the economic connection intensity between 226 nodes in 1996 and 2010 was calculated by gravity model. First, the same threshold is set to filter the effective connection, and the network connectivity ability is analyzed, then the network structure and its evolution characteristics are analyzed by setting different thresholds. It is found that the connectivity of economic network in the Central Plains Economic Zone has been greatly improved, and the economic development and traffic improvement are the main reasons for the network denseness and convenience. A few nodes hold absolute network power, and the status of the five core nodes, such as Zhengzhou City, is particularly prominent, with the line taking the shape of a horizontal "T" word. To build the "ten" zigzag development axis, we need to enhance the connectivity of the eastern nodes. The connectivity of the 3. 3 network shows an obvious core-peripheral structure and a trend of polarization. The influence of the core region and the radiation force are further enhanced. In the Central Plains Economic Zone, only by improving the connectivity ability of the edge "depression" nodes can the convergence and development of the adjacent areas be strengthened, and the phenomenon of node agglomeration in the network is obvious. Around the secondary core nodes, there are several sub-networks of axis-spoke structure, the construction and development of the "ten" zigzag development axis and the "meter" zigzag development belt. It will be advantageous to form the economic connection network with multiple axis-spoke structure. 5. Zhengzhou and other high value nodes will become the intermediary nodes in the network because of their strong connectivity ability. Some nodes with low degree also play a strong intermediary role in the position of "structural hole", so it is necessary to improve the economic and traffic situation of the low grade nodes in the small area while improving the connectivity of the intermediary nodes.
【作者单位】：河南大学黄河文明与可持续发展研究中心暨黄河文明传承与现代文明建设河南省协同创新中心;河南大学环境与规划学院;
【基金】：国家自然科学基金项目(41329001,41001359)
【分类号】：F127

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