摘要
从创新功能、协调功能、开放功能和支撑功能4个维度构建城市能级测度指标体系,利用能级综合评价结果修正城市引力模型,探析长三角地区城市空间联系特征,进一步采用QAP回归法分析影响因素.结果表明:(1)2010年以来长三角地区城市能级整体不断上升并向均衡化态势发展.空间上表现出“中心—外围”形态,上海、南京、杭州等多个中心城市组成“Z”字型高值集中区,低能级城市主要分布在外围区域.城市能级功能系统中支撑功能是区域高质量发展的优势维度,协调功能为短板维度.(2)长三角城市能级网络中节点联系程度不断增强,城市相互作用空间格局与城市能级格局呈现空间趋同性,多中心空间结构特征不断凸显.整个地区城市能级网络呈现密集化态势,网络的稳健性和通达性得到提升,节点集聚力强于扩散力.安徽省表现为以合肥为中心的单核辐射引领形态,江苏、浙江两省表现为以多个城市为中心的多核辐射引领形态.(3)多种因素共同作用于城市空间联系的发展,经济规模、社会资源、地理区位和空间距离对城市空间联系具有显著影响.
The index system of urban energy level is constructed from four dimensions of innovation function,coordination function,openness function,and support function,and the comprehensive evaluation results of energy level is used to revise urban gravity model.The spatial connection characteristics of cities in the Yangtze River Delta region are analyzed,and QAP regression method is further used to analyze the influencing factors.The research results show that:(1)Since 2010,the overall urban energy level in the Yangtze River Delta region has been rising and developing towards a balanced situation.The spatial“center-periphery”form has been displayed,and many central cities such as Shanghai,Nanjing,and Hangzhou have formed“Z”high-value concentration areas,and low-energy cities are mainly distributed in the outer areas.In the urban energy level function system,the support function is the advantage dimension of high-quality regional development,and the coordination function is the short board dimension.(2)The connection degree of nodes in the urban energy level network in the Yangtze River Delta region is constantly strengthened.The spatial pattern of urban interaction and the pattern of urban energy level show spatial convergence,and the characteristics of multi-center spatial structure are constantly highlighted.The urban energy level network in the whole region presents a dense trend,and the robustness and accessibility of the network are improved.The concentration of urban nodes is stronger than the diffusion.Anhui Province shows the leading form of single nuclear radiation with Hefei as the center,while Jiangsu Province and Zhejiang Province show the leading form of multiple nuclear radiation with multiple cities as the center.(3)Many factors work together on the development of urban spatial connection.Economy,social,geographical location and spatial distance have significant influence on urban spatial connection.
作者
刘阳慧
杨山
范擎宇
林金萍
朱广昊
Liu Yanghui;Yang Shan;Fan Qingyu;Lin Jinping;Zhu Guanghao(School of Geography,Nanjing Normal University,Nanjing 210023,China;Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing 210023,China;School of Geography,Jiangsu Second Normal University,Nanjing 211200,China;School of Public Administration,Nanjing Normal University,Nanjing 210023,China)
出处
《南京师大学报（自然科学版）》
CAS
北大核心
2023年第2期34-43,共10页
Journal of Nanjing Normal University(Natural Science Edition)
基金
国家自然科学基金项目(42171200、42101195)
江苏省科研创新计划项目(KYCX21_1289).
关键词
城市能级
网络结构
空间联系
时空演变
影响因素
长三角地区
urban energy level
network structure
spatial connection
spatial-temporal evolution
influencing factors
Yangtze River Delta region
