连云港市空气质量变化趋势分析

Analysis of the Change Tendency of Air Quality in LianYungang

依据连云港市2002—2011年空气质量监测数据,对连云港市空气质量现状及其变化趋势进行系统的分析,并结合实际提出相应对策建议。结果表明,近年来连云港市空气质量总体良好,SO2浓度逐年下降,NO2浓度变化较平稳,PM10浓度下降显著。污染物浓度表现出明显的季节性特征,夏季浓度较低,春冬季较高;主城区各污染物浓度高于其他地区,但总体呈下降趋势。

Based on the routine air monitoring data of LianYungang from year 2002 to 2011,the air quality status、trends and influencing factors were analyzed. The control countermeasures was put forward to combine with the reality then. The result show that,the air quality of LianYungang in the past 10 years was generally good. the concentrations of SO2 decreased year by year;the concentrations of NO2 were stable;the concentration of PM10 has dropped obviously. Each pollutant concentration appeared seasonal change significantly. The seasonal feature have been found when their concentrations in summer were much lower than those in spring and winter. The concentrations of three main air pollutant in downtown were significantly higher than those in the outskirt,which had significant alleviate.