我国省域经济联系的空间格局及其变化

借助空间相互作用重力模型,利用2009和2000年的市区总人口、GDP及公路运营里程等指标,综合测度全国全部287个地级以上中心城市的省域空间经济联系。计算每个省域所辖中心城市相互之间的经济联系强度,并以经济联系强度小于10、介于10—100、大于100三个区段按统一尺度标准,通过ArcGIS软件分别绘制出2009、2000年各省的经济联系空间分布格局图。综合对比发现,区域空间结构与其内部空间经济联系的强弱、联系网络的发育程度有着极为密切的关系,随着空间经济联系由弱到强、联系网络由简单到复杂,区域空间结构也随之由极核式单中心结构向多核心、网络式、一体化方向发展;全国省区的空间经济联系与全国主要城市群可以进行完美的空间拟合,反映出空间经济联系的强弱与紧密程度表征了城市群的演化阶段与发育状况,也说明城市群形成发展的内在机理是其空间经济联系的不断加强与深化。研究表明,我国区域经济发展偏集于沿海的长三角、珠三角与环渤海三地区的三大城市群区域,并且这一不平衡的空间格局仍在持续发展。

The Spatial Framework and Change of Chinese Provincial Region Economic Links

By using spatial interaction gravity model,and the indexes such as urban total population,GDP and road transport mileage in 2009 and 2000,this paper comprehensive measures provincial region spatial economic links include the 287 cities around China.It calculates provincial region economic links intensity between all center cities,and according three unified standard scales of economic links intensity such as less than 10,between10-100,greater than 100,to draw provincial economic links spatial distribution framework through ArcGIS software in 2009 and 2000.Comprehensive compares each provincial area spatial economic links intensity and its change.We found that the regional special structure has kept closely relationship with its internal spatial economic links intensity and network development degree.Along with the special economic links intensity from weak to strong,links network from simple to complex,the regional spatial structure is followed by the single center to multi-core and network structure,and the ultimately development direction is towards spatial integration;we show the facts that spatial economic links can be perfect union with the main urban agglomerations,it reflects that the spatial economic links intensity and its closely degree can be looked upon as a status about city cluster evolution and development stage,at the same time,it also shows that urban agglomeration development inherence mechanism relies on the spatial economic links intensify and deepen continually.The study have shown that China’s regional economic development is concentrating in three big coastal urban agglomeration regions,such as the Yangtze River Delta,Pearl River Delta and Ring Bohai Sea Gulf areas,and the uneven spatial development framework will go on continuously.