城镇化进程中城市拥挤度的演化规律

Evaluation laws of congestion in the process of urbanization

利用城市拥挤度评价指标体系和综合评价指数法构建了城市拥挤程度的评价方法,并对北京市和郑州市进行了对比分析。结果显示:在城镇化进程中,城市的拥挤水平呈不断上升的趋势;在城镇化的"加速阶段",城市的拥挤程度加速上升;在城镇化的"停滞阶段",城市拥挤程度的增速放缓;城镇化"加速阶段"的拥挤波动振幅大于城镇化"停滞阶段"的振幅。

By using the urban congestion evaluation in- dex system and the synthetic evaluation index, this essay innovates a method of evaluating urban congestion level. This essay uses this method to contrast the city of Beijing and Zhengzhou. The results show that urban congestion level is rising in the process of urbanization, and in the ＂acceleration phase＂ of urbanization, urban congestion level accelerated, but in the ＂lag phase＂ of urbanization, the growth rate of urban congestion level slowdown. The fluctuation amplitude of congestion in ＂acceleration phase＂ is greater than that of ＂lag phase＂.