城市化是人类社会活动及生产要素从农村地区向城市地区转移的过程。其结果,现代城市最终成为人类社会生活、生产、消费和污染集聚之地,人口和经济的集聚状态成为衡量现代城市化的两项基本指标。11个国家的实证分析表明,无论是发达国家还是发展中国家,经济城镇化的发展水平往往快于人口城镇化的发展水平。更为重要的是,第二产业发展在国家人口城市化进程中的作用存在着由强变弱的趋势;与之相比,第三产业发展对人口城市化发育的影响则要强烈的多。
Urbanization refers to the transferring process in which human activities and productive factors transfer from the rural areas to the urban areas. As a result,modern cities have become the gathering places of human activities like production and consumption and the rubbish dump. It is, therefore,the changing patterns of agglomeration both in demography which can be named as the demographic-urbanization and in economy which can be titled as the economic-urbanization have become the two essential criteria for evaluating the modern urbanization. Through an analysis of eleven countries, it has been proved that either in the developing countries or in the developed countries, economic-urbanization goes faster than demographic-urbanization. More significantly,the secondary industry plays a weaker and weaker role in the process of demographic-urbanization, while the tertiary industry plays a more important role in this urbanization.