丝绸之路经济带陆路西北段城市体系与开放性研究

摘要

With rising of the Silk-road Economic Belt construction for national strategy, positioning the grades and types of cities in economy belt is imminent.Using the models of intensity of urban flow and urban eco-economic niche to measure the 18 cities’ urban flow intensity and urban eco-economic niche in northwest section of the Silk-road Economic Belt, and then comprehensive comparison the two models to divide the city systems and city open-ness.The results show that:The intensity of urban flow in the study area is between 0.38~115.89 billion yuan, the intensity of urban flow is not only closely related with city scale, but also influenced by city type.Urban eco-eco-nomic niche is between 0.020 to 0.231, more than half of the cities are in the lower position of the system, the main limiting factor is the backward economy.The cities can be divided into 4 levels, Xi’ an is the core city, Urumqi and Lanzhou are the secondary core cities, 5 cities are important node and 10 cities are general node.Finally, creating the city openness index to divide the 18 cities into open type and introverted type, 6 cities are open, the rest 12 cit-ies are introverted.%随着丝绸之路经济带建设上升为国家战略，对经济带城市等级及城市类型进行科学定位迫在眉睫。以丝绸之路经济带陆路西北段为例，运用城市流强度模型和城市生态经济位模型对研究区18个地级以上城市的城市流强度和城市生态经济位进行测度，并将二者综合，划分城市体系和城市开放性类型。结果显示：研究区城市流强度介于3．80亿～1158．92亿元，城市流强度不仅与城市规模息息相关，城市类型也是其重要影响因素；城市生态经济位介于0．020～0．231，超过半数城市位于系统底部，主要限制性因素为经济滞后；结合城市流强度和城市生态经济位，将城市划分为4级，西安为核心城市，乌鲁木齐和兰州为副核心城市，重要节点城市5个，一般节点城市10个；创建城市开放性指数，将城市划分为开放型和内敛型，西安、乌鲁木齐等6个城市为开放型，兰州等12个城市为内敛型。