中文摘要：

电子商务的应用和普及改变了城市传统商品交易模式,对城市间联系和城市体系产生了较大的影响,其发展的空间格局日益反映出信息时代的我国城市体系空间特征。通过计算全国289个地级市间的电子商务势能和城市联系值,探讨城市间联系及其格局,并借助多元回归模型分析该格局形成机制。结果显示：东部大城市主导现象依然存在,但是东莞、温州等一些中小城市崛起,一些传统大城市位序下降。同时,B2B城市体系等级性强,B2C等级性较弱。对形成机制的研究表明：1互联网使用和物流服务水平对电子商务城市体系形成有显著影响。2经济和地理空间因素仍然有影响,对不同类型城市体系的影响不同。B2B主要受行业、地域等因素影响,B2C主要受消费相关变量的影响。

英文摘要：

The city traditional trading pattern has been changed because of the application and popularization of the ecommerce, conducting a large impact on the city connection and city system. The spatial pattern of e-commerce largely reflects the spatial characteristics of city system in the information age. We summarize the city system and city connection based on the e-commerce potential energy, and analyze the formation mechanism through a multiple regression model. The results showed that big cities still play a leading role in the e-commerce city system. However, a few small and medium-sized cities rise, such as Dongguan and Wenzhou, and some traditional cities order down. Further, the B2B city system has a strong hierarchy, and the B2C has a weak one. The findings of the formation mechanism stated that the use of internet and logistics services have a strong impact on the city system and the economic and geographic variables still have an influence. What＇ s more, the B2B city system is mainly affected by industry and regional factors, and B2C city system is influenced by consumption variables.