中文摘要：

21世纪是城市化的世纪，城市区域化和区域城市化是城市化发展的必然结果，而城市与区域的相互作用是促进城市区域化和区域城市化的直接动力。在“五个统筹”中，统筹城乡和区域发展占有十分重要的地位。预示着统筹区域和城市协调发展将成为未来中国社会经济发展与改革的一项核心要求。探讨城市与区域相互作用机制是解决城市与区域问题，促进城市和区域发展，提高城市与区域总体竞争力亟待解决的重要的理论和实践课题。通过各种作用机制对城市与区域相互作用影响的研究，来促进城市与区域的良性互动，进而为解决城市问题和区域问题以及提高城市与区域整体实力提供科学参考。

英文摘要：

The 21st century is a century of urbanization. Both townie regionalism and regional urbanism are inew itable outcomes of improvement of the urbanization. Interaction of the city and region is the direct motive forces that town＇s regionalism and regional urbanism. It plays important role in the ＂ five balanced aspects ＂ to balance development among regions and to balance urban and rural developments, which indicates balancing development between regions and cities becomes a urgent requirement in the social economic development and reformation of future China. Probing into the interaction mechanism between city and region is an important theoritical and practical subject demanding immediate solution, and it will solve the urban and regional problems, promote development of the city and region, improve the overall competitiveness of the city and region. For better complimentary interaction between city and region, this study focuses on effects on city and region by various mechanisms, so as to provide a scientific reference for solving urban and regional development problems and enhancing their overall strength.