【摘 要】
：
为研究增加PM2.5及O3评价因子对我国现行空气污染指数(API)的影响,笔者选择粤港区域空气监控网络的广州万顷沙、从化天湖、深圳荔园、东莞豪港小学、中山紫马岭公园共5个站点
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为研究增加PM2.5及O3评价因子对我国现行空气污染指数(API)的影响,笔者选择粤港区域空气监控网络的广州万顷沙、从化天湖、深圳荔园、东莞豪港小学、中山紫马岭公园共5个站点,利用2006年10月的监测数据,分析增加PM2.5、O3评价指标前后各站点API及超标情况的变化.结果显示,增加O3指标,紫马岭公园、豪岗小学、深圳荔园和从化天湖的月优良天数分别下降了57％、30％、13％和10％；增加PM2.5指标,导致各站点优良天数急剧下降；同时增加PM2.55和O3评价指标,各站点超标天数明显增加.分析显示,增加PM2.5、O3评价指标,将改变目前珠三角春、冬季API平均值较高,夏、秋季API平均值较低的现状,造成珠三角全年各月的API平均值的差异趋于缩小,夏、秋季的环境空气污染水平将有所加重.
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