乌鲁木齐市大气污染状况及治理成效研究

对乌鲁木齐市近10年的空气质量各级别天数、主要大气污染物年均浓度进行研究，结果显示乌鲁木齐大气环境质量正向良好的趋势发展；PM10、NO2年均浓度变化幅度不大，仍高于国家二级标准；SO2年均浓度在2012年首次达到国家二级标准。大气污染物浓度与气象因素的相关分析显示，乌鲁木齐市大气污染物月均浓度和AQI与月均气温、日照时数、蒸发量呈显著的负相关关系，与月均湿度呈显著的正相关关系。通过变异系数法进一步得出节能减排和能源结构调整是促进乌鲁木齐市大气环境质量改善的主要因素。

Current Status of Air Pollution and Effectiveness Analysis of Air Pollution Management in Urumqi City

The days of different air quality levels and the annual average concentration of the main air pollutants in Urumqi city in recent decade were examined.The results implied that the air quality of Urumqi city was getting bet-ter.The annual average concentrations of PM1 0 and NO2 have been steady reaching the second grade of the national standard in the last ten years.SO2 has achieved the second grade for the first time in 201 2.The correlation analysis between atmospheric pollutants concentration and weather factors implied that the monthly average concentration of＆amp;nbsp;atmospheric pollutants and air quality index had a significantly negative correlation with temperature,sunshine time,and evaporation,but a significantly positive correlation with monthly average humidity.According to the vari-ation coefficient method,the major drivers of improving air quality in Urumqi city were implementation of energy conservation and emissions reduction and the adjustment of energy structure.