不同规模城市的建设投资优化配置研究

A research on optimized allocation of construction investment on cities of different-sizes

分析我国不同规模城市间的建设投资差距和经济差距,发现小城市的投资产出效益高于其他规模的城市。通过城市建设投资效益模型及其分析,用投资优化配置模型,测算到2020年,特大城市的建设投资比重减小,其他规模的城市将增加,其中小城市增加最多,而城市化人口增量将与城市规模大小呈反向变化,使我国在2020年步入初步城市社会时,城乡之间的差距逐渐缩小,达到大中小城市协调发展。从城市纵向发展的角度,为城市建设投资提供了有益的指导。

After analyzing the investments in construction and economic differences among cities of different sizes in China, the study in this paper shows that the investment output utility in small cities is higher than that of big cities. By using an optimized investment allocation model, it was projected, until the year 2020, that the ratio of construction investment in outsize-cities will decline, while other cities will increase, especially for small cities. However, the population growth is in a reverse trend to city sizes. Therefore, the differences among cities and countryside will be lessened, thus to reach a coordinated development condition among different-sized cities by 2020. In an alternative viewpoint of city development, this trend appears to serve a useful guidance for the investment of future city construction.