摘要
通过计算北京市4个典型区域的容积率、污染物现状排放强度和允许排放强度限值,分析北京市典型区域开发强度和大气污染物排放的关系。研究结果显示,NO_x、VOCs和一次PM_(2.5)的现状排放强度分别为74~147 t/km^2·a、73~139t/km^2·a和15~31 t/km^2·a,且各选区的容积率与现状排放强度之间线性拟合程度较好,容积率均与污染物排放强度成正比。基于PM_(2.5)达标的情况下,A、B选区的NO_x、VOCs和一次PM_(2.5)的允许排放强度限值分别为23 t/km^2·a、46.87 t/km^2·a和8.11 t/km^2·a,C、D选区则分别为12.71 t/km^2·a、25.89 t/km^2·a和4.48 t/km^2·a。4个典型区域的现状污染排放强度是允许排放强度限值的2.7~7.1倍。因此,对于现有的居住和商业区,建议通过探索污染治理新技术和新政策来降低污染物排放;而对于正在开发建设的郊区新城,建议从宏观层面控制容积率、人口规模等指标,从而降低由此带来的污染物排放。
In this paper, the plot ratio, present emissions intensity and emissions intensity threshold of the 4 typical areas of Beijing are calculated to analyze the relationship between the development intensity and the air pollutants emission of typical areas. Research results show, the emissions intensity of NOx, VOCs and PM2~5 primary source are 74-147 t/km2·a, 73-139 t/ km2·a and 15-31 t/km2·a, and the linear fitting degree of plot ratio and present emissions intensity are good, and the plot ratio is proportional to the intensity of pollutant emission. Based on the case of PM2.5 standards, the emissions intensity threshold ofNOx, VOCs and PM25 primary source are 23 t/km2.a, 46.87 t/km2·a and 8.11 t/km2·a in A and B, and 12.71 t/km2.a, 25.89 t/km a and 4.48 t/km2.a in C and D. The present emissions intensity is 2.7-7.1 times of the allowed emission intensity. Therefore, for existing residential and commercial areas, it is suggested to explore new technologies and policies for pollution control; and for some developing suburban new town, it is suggested to control the plot ratio and the size of the population from the macro level to reduce the emission of pollutants. Key words： plot ratio; pollutants emission intensity; environmental capacity
出处
《生态经济》
北大核心
2017年第4期139-142,共4页
Ecological Economy
关键词
容积率
污染排放强度
环境容量
plot ratio
pollutants emission intensity
environmental capacity
