中部三角区域联动新格局——基于铁路客运车次测算的研究

New Pattern of City's Linkage in the Middle Triangle Area: From the Evidence of Railway Passenger Trains

高铁时代,中国城市和区域格局正在重构。通过建立区域联动指标,根据各城市铁路客运车次数,计算和测度了城市的吸附强度和城市间的依附强度。并据此刻画中心城市及其腹地城市群的关联特征和空间分布格局,甄别腹地城市与中心城市之间联动的决定因素。结果发现:(1)长武南辐射范围已超越了各自的省域范围,衡阳等城市或将成为中三角区域重要的次级中心城市;(2)高铁时代,与中心城市的联动强度、北上广中心城市的辐射大小、城市区位和自身实力等是中三角区域城市联动的主要影响因素;(3)高铁网络加强了城市间的联动效应,正在重塑中三角区域城市格局。

In the era of high-speed rail,China’s urban and regional patterns are being reconstructed.By establishing regional linkage index,and according to the number of passenger trains in each city,this paper calculated the adsorption strength and dependence strength between cities.On this basis,the paper described the correlation characteristics and spatial distribution pattern of the central city and theirs hinterland urban agglomeration,and identified the decisive factors of the linkage between the hinterland cities and theirs central cities.The results show that:(1)The radiation range of Changsha,Wuhan,Nanchang has exceeded their respective provincial scope,Hengyang and other cities will become important secondary central cities in the middle triangle region.(2)In the era of high-speed railway,the intensity of linkage with the central city,the radiation size by Beijing,Shanghai,Guangzhou,the location of the city and its own strength are the main factors influencing the linkage of the cities in the middle triangle region.(3)The high-speed rail network has strengthened the linkage effect among cities,and is reshaping the status of cities in the middle triangle region.