The main contributions of the research include the following aspects: the information index constructed by searching information on Baidu’s web pages through crawler algorithm is adopted for the first time to improve the gravity model, which is then incorporated into the same framework with urban flow model and geo-economics relationship model; a new traffic accessibility model considering both passenger and freight transport is established; a comprehensive measurement index system covering seven aspects of space, industry, transportation, market and so on is constructed to quantitatively measure the development level of urban integration in Nanjing, Zhenjiang and Yangzhou from 2004 to 2016. The results show that the development trend of urban integration in the three cities is obvious and periodic during the research period. However, serious problem of industrial convergence still exists between Yangzhou and Zhenjiang and the relationship between them is a competitive geo-economics relationship. In addition, it is necessary to further integrate the factor market and enhance the sharing of infrastructure and the equalization of public services in Nanjing, Zhenjiang and Yangzhou.

这项研究的主要贡献包括以下几个方面：首次采用通过爬虫算法在百度网页上搜索信息构成的信息索引，以改进引力模型，然后将其纳入与城市流量模型相同的框架中，地缘经济关系模型；建立了同时考虑客运和货运的交通可达性模型；构建了涵盖空间，工业，交通，市场等七个方面的综合测度指标体系，对2004-2016年南京，镇江，扬州的城市融合发展水平进行定量测度。结果表明，城市的发展趋势在研究期间，这三个城市的整合是明显且周期性的。然而，扬州与镇江之间仍然存在严重的产业融合问题，两者之间的关系是竞争性的地缘经济关系。此外，有必要进一步整合要素市场，加强南京，镇江和扬州的基础设施共享和公共服务均等化。