城市空间经济联系变化的网络特征及机理——以珠三角及北部湾地区为例

Network features and mechanism of economic relations in urban space:taking the Pearl River Delta and Beibu Gulf Areas for example

基于社会网络分析方法,以珠三角及北部湾地区的15个城市为研究对象,分析了2003-2012年以来珠三角及北部湾城市空间经济联系变化的网络特征。结果显示:从网络结构来看,珠三角及北部湾城市空间经济联系的网络呈现出由单中心向多中心发展的趋势;从网络密度来看,中心城市对整个区域的辐射作用不断增强;从中介中心度来看,珠三角及北部湾城市经济联系的空间差异性降低,城市网络中的结构分层仍较明显,核心—边缘分析也从侧面证明了这一点。认为创新要素空间溢出、交通网络的发展、产业互补分工、地方政府的协调等共同形成了珠三角及北部湾地区网络结构不断变化的机理,并提出了优化珠三角及北部湾地区网络化发展的政策建议。

Based on the social network analysis, using fifteen cities of the Pearl River Delta and Beibu Gulf as the re- search object, this essay analyzes the network characteristic changes in economic relation of the Pearl River Delta and the cities of Beibu Gulf since 2003 to 2012. The results show that from the point of view of network structure, network changes in the Pearl River Delta and Beibu Gulf economic ties between the city space is more obvious, showing a single center to multi cen- ter trend; from the point of view of network density, the central city radiation function of the whole region is growing; from the point of view of centrality, the Pearl River Delta and Beibu Gulf economic ties between the city space is gradually to balance, but there exist obvious layering network structure. In the end, this essay combines network characteristic of space economic ties, and puts forward some optimal path of the space economic ties and provides the optimization direction of the cities of the Pearl River Delta and Beibu Gulf.