上海城市交通与机动车排气污染调查

上海市机动车保有量逐年增加，车辆的排气污染愈来愈严重，据调查，１９９７年机动画排放的ＣＯ，ＭＮＨＣ，ＮＯＸ和ＰＭ分别达到５８．６，９．０８，６．２０和０．２３万吨。中心城区机动车排放的ＣＯ，ＮＭＨＣ和ＮＯＸ污染物５０％以上来自于小型车，是影响上海城区环境空气质量的主要污染源。

Investigation on Urban Traffic and Vehicle Exhaust Emission Pollution in Shanghai

The actual number of vehicles has increased year after year and the vehicle pollutant emissions become more and more severe in Shanghai. According to the investigation, CO, NMHC, NOx and PM emitted from vehicles came up to 586,90.8,62.0 and 2.3 thousand tons respectively in year 1997. The CO,NMHC and NOx pollutants emitted from light vehicles were more than 50% in central urban area, which was the major source of air pollution in Shanghai. The proportion of CO and NMHC emitted from motorcycle and engine boosting bicycle was more than 20% of vehicle emissions in central urban area. According to the investigation, it was estimated that the number of vehicles would keep on increasing, and the pollution of vehicle emission would become more serious. So, it should be the priority measure to decrease the exhaust gas emission of the light vehicles and control the number of the motorcycle and engine boosting bicycle.