“十二五”期间香格里拉市环境空气质量变化趋势分析

Analysis on the Ambient Air Quality Trends in Shangri- La City during the Twelfth Five- Year Plan

根据2011—2015年香格里拉市区环境空气质量监测数据,采用污染物负荷系数法和Spearman秩相关系数法对香格里拉市区环境空气质量变化趋势进行分析,结果表明:香格里拉市区环境空气质量总体保持优良水平;SO_2和NO_2呈现下降趋势;PM_(10)呈现上升趋势,成为污染物负荷中贡献率最大的大气污染物。提出了防治对策措施。

The Air quality trends in Shangri-La City was analyzed using pollutant load coefficient and spearman related coefficient based on the air monitoring data in 2011 -2015 . The results showed that the general air quality kept good in the downtown of the city. The concentrations of SO2 and NO2 were decreasing. However, the concentration of PM10 was increasing, which has become the main air pollutant with the most contribution rate. Counter- measures were put forward in the end.