中国华北区域城市间污染物输送研究

The Study of Pollutant Transport between the Cities in North China

通过对华北地区城市间大气污染监测资料分析发现,城市之间存在着大气污染的相互影响和输送问题,大气污染是一个区域性的环境问题。治理和改善北京地区的大气环境,需要考虑周边地区影响,并实施综合性的污染控制和治理对策。使用二维欧拉统计模式,以SO2,SO42-,PM10为模拟对象,模拟其远距离输送和沉降过程。对2002年的区域空气污染状况进行了模拟,模拟区域包括了所要研究的北京市、天津市、河北省等地区。利用实测资料对模式计算结果的检验显示,二者的相关系数平均为0 55。对资料的综合分析表明,北京大气环境中20%的PM10及23%左右的SO2都是来自北京周边地区。

Based on the analysis of air pollution monitoring data in the cities of North China,it was found that there was a problem of pollutant affection and transport between the cities of North China,and the air pollution was a regional environmental problem.The harness and improvement of air environment in Beijing needed to consider the effect of surrounding areas and to take comprehensive countermeasures of pollution control and harness.Two-dimensional Euler model was used to simulate long-range transport and sedimentation processes of SO_2,SO_4^(2-) and PM_(10).The state of air pollution in Beijing,Tianjin and Hebei Province in 2002 was simulated.The calculated results of the model were compared with field observation data and it was shown that their average correlation coefficient was 0^55.According to comprehensive analysis of data,20% of PM_(10) and 23% of SO_2 in Beijing air were from the areas surrounding Beijing.