摘要
以公路客运量、货运量以及熵值法计算下的复合流量作为测度指标,综合运用集中系数、非均衡系数、重力模型、最大引力连接线等方法与模型对河南省18个省辖市城市节点性与空间联系的时空演变特征进行分析.研究表明:1从时间上看,2003—2013年,河南省18个省辖市公路客货运集中程度差异显著,客运量集中程度比较明显而货运量相对分散,2008年以后两者都表现出比较稳定的集中态势.非均衡系数逐年增加,河南省整体客货运呈现出先分散后集中的发展特征.2从空间特征上看,以客运量测度的河南省城市节点空间联系形态呈现以郑州为核心的"中心-外围"辐射状特征,相反以货运量测度的城市中心节点性较弱且分散.以复合流量测度的河南省城市节点中心性也较分散,除2008年表现出以郑州为核心的"中心-外围"状外,其余年份城市中心节点性较弱且相对分散.
Based on road passenger,freight fluxes and comprehensive fluxes as measure indexes,by the methods of concentration factor,unbalanced coefficient,gravity model approach,maximum gravity connection,this paper gives a study on spatio-temporal evolution progress of city’s nodes distribution and connection characters in Henan Province at city scale from 2003 to 2013. The results are as follows. Firstly,from the temporal perspective,the concentration degree shows obviously differences that the road passenger volume is intensive,but the freight volume is dispersed from 2003 to 2008. However,the concentration degree keeps stably in both road passenger and freight fluxes after year of 2008. The unbalanced coefficient is increased,showing that both passenger and freight volumes are from dispersed to concentrated. Secondly,from the spatial perspective,the urban centre nodes contact form shows that Zhengzhou is as the core and forms a“core-periphery”feature based on road passenger volume,while that of freight fluxes are weak and dispersed. The urban centre nodes also shows dispersed based on the comprehensive fluxes,and only in 2008 Zhengzhou shows as the core and forms a“core-periphery”feature.
出处
《河南科学》
2016年第6期973-978,共6页
Henan Science
基金
国家自然科学基金项目(41271144)
河南省科技厅社会发展攻关项目(162102310396)
河南省教育厅人文社科一般项目(2016-qn-016)
关键词
公路客货运量
复合流量
重力模型
时空演变
河南省
road passenger and freight fluxes
comprehensive fluxes
gravity model approach
spatio-temporal evolution
Henan Province
