完善长三角世界级城市群的轨道交通网络

Perfect the Rail Transit Network of the Urban Agglomerations with World Class of the Yangtze River Delta

根据世界银行2009年的一份报告：全球大概在1．5％的土地面积上，聚集了全球一半的生产活动；在美国，有2．43亿人口（约占总人口的76％）主要集中在仅占美国总面积3％的土地上。这些区域就是全球生产效率最高的城市群。随着我国城镇化的发展，城市群也已成为城镇化的重要形态。

to a report of the World Bank in 2009, about 1.5% land area of the whole world gathered half of the whole world＇s production activities. In the United States of America, 243 million populations （accounting for about 76% of the America＇s total populations） are concentrated on the land area that only accounts for 3% of the total area of the United States. These regions are urban agglomerations with the highest production efficiency in the whole world. With the development of China＇s urbanization, urban agglomerations have become the important form of urbanization. China＇s economy started to transform from the provincial economy, that is, the administrative district economy to the urban agglomeration economy. Many urban agglomerations across provinces have gradually rendered. Within Urban Agglomerations, all the cities must integrate with each other, mutually coordinate, and develop with overall planning. In addition, a group of small towns newly emerge. Then, the ＂1 ＋ 1〉2＂ aggregate effect would be produced.