西安市大气污染时空分布特征及其与经济发展的相关性

Spatial and Temporal Distribution Characteristics of Air Pollution and Its Correlation with Economic Development in Xi’an

在过去的几十年间,空气质量已成为发展中国家城市环境问题的重中之重。大气污染是中国北方普遍面临的环境挑战,探讨了2013—2021年西安市13个空气监测站6种大气污染物浓度的时空变化规律,以及大气污染对经济发展的响应特征。结果表明:大气污染浓度整体呈现下降趋势,O_(3)在春季和夏季占主导地位,PM10在秋季和冬季占主导地位。除NO_(2)外,其余大气污染物浓度与经济增长呈显著负相关,工业SO_(2)和烟尘排放强度(EI)均呈下降趋势,环境规制强度(ERI)整体呈现升高趋势,表明西安市的环境管理取得了一定的成效。

Over the past few decades,air quality has become a top priority for urban environmental issues in developing countries.Air pollution is a common environmental challenge in northern China,In this study,the temporal and spatial variations of 6 kinds of air pollutants in 13 air monitoring stations in Xi’an from 2013 to 2021 were discussed,as well as the response characteristics of air pollution to economic development.The results showed that the overall atmospheric pollution concentration presented a downward trend,with O_(3)dominating in spring and summer,and PM10 dominating in autumn and winter.Except for NO_(2),the concentration of other air pollutants is significantly negatively correlated with economic growth.The industrial SO_(2)and soot emission intensity(EI)both show a downward trend,while the environmental regulation intensity(ERI)shows an overall increasing trend,which indicates that the environmental management of Xi’an has achieved certain results.