城市人口规模与环境污染之间的关系——基于中国285个城市面板数据的分析

Urban population size and urban environment pollution:analysis based on 285 cities' panel data of China

通过构建城市人均污染排放—人口规模模型,运用我国285个地级以上城市的面板数据,对不同等级城市人口规模与环境的关系进行了实证研究。结果显示:小城市人均污染排放量随着城市人口规模的增加呈递减趋势;中等城市人均污染排放量随着城市人口规模的增加呈先增加再减少的"倒U型"关系;大城市人均污染排放量随着城市人口规模的增加呈"正N型"关系;特大和超大城市人均污染排放量随着城市人口规模的增加呈"倒U型"关系;从全国范围看,城市人均污染排放量随着城市人口规模的增加呈"倒U型"关系。

An urban per capita emission - population scale model was constructed to make an empirical study on the relation between different - level urban population scale and envi- ronment by using the panel data of 285 prefecture -level cities in China. The results show that ： The small - sized cities＇ per capita emissions are negatively related to population scale; Medium - sized cities＇ per capita emissions firstly increases then decreases with population＇s increasing, which is shown as an ＂inverted U＂ curve; Large -size cities＇ per capita emissions show a ＂N＂ curve when population increases; Extra large - sized cities and super large - sized cities＇ per capita emissions show an ＂ inverted U＂ curve; Nationally, urban per capita emissions show an ＂ inverted U＂ curve with the increasing of urban population size.