义乌市大气环境质量改善成效分析

摘要

Objective] The aim was to evaluate atmospheric environmental governance effect in Yiwu City in rent years.[Method] According to air quality monitoring data of Yiwu City during 2013-2015, the variation trend of concentration of main pollutants was analyzed, he envi-ronment quality was evaluated by referring to secondary standard of Environment Air Quality Standard (3095-2012).[Result] PM2.5 was the major pollutant, following by PM10 , NO2 and O3 ,with a compound pollution pattern.Particulate matter pollution was serious, NO2 and O3 con-centrations rose slightly; PM10 and PM2.5 declined year by year, the pollution index of SO2 was falling obviously.[ Conclusion] Atmospheric environment quality of Yiwu City in recent years was improved, which may be related to the adopted measures such as adjustment of energy and industrial structure, comprehensive improvement of pollution sources.%[目的]评价近年来义乌市大气环境治理成效。[方法]依据2013～2015年义乌市环境空气质量监测数据，分析主要污染物的浓度变化趋势，按照《环境空气质量标准》（3095—2012）二级标准进行评价。[结果]影响义乌市空气质量的主要污染物依次为PM2．5、PM10、NO2、O3，义乌市大气污染呈现为扬尘和机动车尾气并存的混合型污染。颗粒物污染突出，NO2和O3浓度略有上升，PM2．5、PM10和SO2总体呈下降趋势，尤其对SO2治理效果显著。[结论]近年来义乌市大气环境质量有所改善，这可能与该市采取的各项能源、产业结构调整和污染源综合整治措施取得初步成效有关。