乌鲁木齐市大气污染物浓度空间格局变化

Air pollution and spatial variation of pollutants in Urumqi

通过对2004-2009年乌鲁木齐市三个大气环境质量自动监测点位的数据分析,得出在城市布局不断调整的条件下,各区域的污染因子年均浓度变化较大。表现为市南片区整体污染物质浓度较高、市中区SO2和NO2增加速度较快、市北片区PM10增长速率较大浓度已接近污染最严重的市南片区。从监测数据分析来看,城市空间污染物质浓度变化相当明显,市中区的主要污染物以SO2为主,市南、北区则以PM10为主。

Based on the statistics and analysis of the monitoring data obtained at three atmospheric environmental quality automatic monitoring sites in Urumqi during 2004-2009,it was revealed that the annual average concentrations of PM10,SO2 and NO2 in different district has changed greatly with the constant adjustment of the city layout.The air pollutants concentrations in the south area of city were higher.The concentrations of SO2 and NO2 in the middle of the city displayed a rapid increase.Whereas PM10 concentrations in the north area of the city went up with high speed and was close to the level of south area where the air pollution was the worst.Totally,this study showed that pollutants concentrations have changed obviously in urban space with SO2 as the dominant pollutant in the middle area and PM10 in the south and north area.