基于熵权TOPSIS-RSR法的城市废气排放研究

Study on Urban Exhaust Emission Based on Entropy Weight TOPSIS-RSR Method

随着我国经济的快速发展,空气污染问题日益凸显。为推动我国经济健康发展、改善空气质量,研究了我国城市的废气排放情况。依据《中国统计年鉴2021》,选择了31个主要城市,运用熵权TOPSIS-RSR法进行了分析研究。结果显示:废气污染物排放量较少的3个城市是拉萨、海口、长沙,较多的3个城市是南京、上海、武汉;然后结合RSR法进行分档,被评为“优”的城市有拉萨、海口、长沙、南宁、杭州,被评为“差”的城市有太原、南京、上海、武汉。据此可知,我国城市的废气污染物排放情况总体呈“橄榄型”结构,进一步分析发现氮氧化物是废气排放的最主要来源。该研究可为有效控制废气排放提供参考。

With the rapid development of Chinese economy,the problem of air pollution has become increasingly prominent.In order to promote the healthy development of Chinese economy and improve air quality,this paper studies the emission of major Chinese cities.According to China Statistical Yearbook 2021,31 major cities were selected and analyzed by using entropy weight TOPSIS-RSR method.The TOPSIS method showed that the three cities with less emission of waste gas pollutants were Lhasa,Haikou and Changsha,while the three cities with more emissions were Nanjing,Shanghai and Wuhan.Then,according to RSR method,Lhasa,Haikou,Changsha,Nanning and Hangzhou are rated as"excellent",while Taiyuan,Nanjing,Shanghai and Wuhan are rated as"poor".Based on this,the emission of pollutants in cities in our country is an"olive type"structure on the whole,and it is found that nitrogen oxides are the most main source of exhaust gas emission.This study can provide a reference for effective control of exhaust gas emission.