论文部分内容阅读
一、大城市即将和已经面临的严重问题根据联合国关于人口统计的材料说明,近三十年来世界城市人口翻了一番,达到了18亿,也就是说每10个人当中有4个是城市居民,照此发展,估计今后二十年内世界人口将会有一半以上是城市居民,当然,今后我国的城市人口不会发展得这样快,它可以通过合理地布置工矿场地、改造现有工业,以及严格地实行计划生育和城市户口管理等有效方法来控制,但是,从1977年与1949年的比较数字也可以看出,其城镇人口在28年中增加了一倍,大
I. The major problems that the big cities are about to face and have already faced According to UN materials on demographic statistics, the world’s urban population has doubled to 1.8 billion in the past 30 years, that is, 4 out of 10 people are urban residents. According to this development, it is estimated that in the next 20 years, more than half of the world’s population will be urban residents. Of course, in the future our country’s urban population will not grow so fast. It can rationalize the layout of industrial and mining sites, transform existing industries, and Strict implementation of family planning and urban hukou management and other effective methods to control, but from the comparison of 1977 and 1949 can also be seen that its urban population has doubled in 28 years, large