The Spatial Contacts among Cities of the Shandong Peninsula Blue Economic Zone
以山东半岛蓝色经济区七市为对象，用城市流和经济联系强度模型分析区内辐射与内在经济关系，发现整体辐射不强、核心城市作用不突出、经济联系不紧密，对区域协调发展有参考价值。
Taking the seven cities in Shandong peninsula blue economic zone as the study area,the radiation and inherent economic relations in the zone has been measured and analyzed based on the model of intensity of urban flow and intensity of economic contacts among cities. The results show: 1)The overall radiation in Shandong peninsula blue economic zone is not strong,as the core role of central city is not prominent,and cities whose intensity at middle and low level account for the majority. 2)The radiation of secondary industry in cities is strong,and the spatial concentration is significant. In contrast,the radiation of tertiary industry is weak,whose spatial distribution is scattered. 3)With cities among the zone geographic dispersion,the economic relations is not close. In order to promote coordinated development among cities in Shandong blue peninsula economic zone,it is necessary to improve the leading role of core city,enhance the development level of the tertiary industry,strengthen the construction of infrastructure and promote the market integration system.