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针对重污染应急中快速响应的需求,基于区域空气质量模型,建立了可依据PM25监测事实进行调整的控制措施效果评估方法.计算过程中,设计了多种PM2.5组分分配方案和响应系数,得到了该控制措施实施效果范围.利用建立的方法,对重污染应急中最常采用的控制措施——机动车限行在北京地区的实施效果进行定量评估.该方法能够迅速评估各行业减排方案的实施效果,为管理部门提供参考.“,”To cope with the need in response to heavy pollution,a quick method to assess the quantified effects of countermeasures was developed based on numerical air quality model and adjusted according to PM2.5 measurement.By takingdifferent distribution plans of PM2.5 component and response coefficients,several results could be obtained.Thus,a range of effects for countermeasures was formed.By applying the methodology,a suite of quantified assessment of vehicle usage limit was implemented for countermeasure,which was the most frequently used in response to heavy pollution.The methodology developed could obtain the quantified effects of countermeasures in a rapid way,and provide technique support in time for management agency.