经济全球化逐渐成为现实，国家之间综合国力的竞争日益激烈；作为各项社会活动的载体，城市成为了这场日持久大战的主要战场．二十世纪，日本、美国、西欧相继形成了巨型城市群落，产生了巨大的社会经济凝聚力和张力。 二十世纪下半个世纪，尤其是改革开放以后，从以“守”为中 Economic globalization has gradually become a reality. The competition for the overall national strength between countries has become increasingly fierce. As the carrier of various social activities, the city has become the main battlefield for this protracted war. In the twentieth century, Japan, the United States and Western Europe formed a series of giant urban communities one after another, generating enormous social and economic cohesion and tension. The second half of the twentieth century, especially after the reform and opening up, from “keep” as