摘要
近年来 ,可吸入颗粒物已成为影响我国城市空气质量的首要污染物。该文分析了城市中颗粒物的不同来源 ,根据对沙尘天气的发生过程监测 ,结合我国重点城市空气质量统计数据 ,提出了沙尘影响指数的概念。根据沙尘影响指数对不同类型城市空气中的可吸入颗粒物来源和沙尘影响程度进行了分析 ,力求明确沙尘天气与空气质量的关系。根据 2 0 0 1年和 2 0 0 2年 3月最新的沙尘天气监测数据和特定的沙尘天气过程 ,按照沙尘来源和沙尘影响范围将沙尘影响地区进行了分区 ,分析不同区域内的起沙机制和沙尘来源 。
PM 10 (Particle matter less than 10μm) has been the primary pollutant to China city's air quality in recent years. In this paper, different sources of particles in urban areas are firstly analyzed, and then a new index for urban air pollution dust influence degree is presented. On the basis of monitoring results and identified formative course, the paper also analyzes the generation mechanism and dust sources in different areas by delimitating the areas influenced by dust storm in terms of dust sources and influenced scope. Dust influence degree, which is obtained from monitoring results during its occurrence and statistical data of main cities, is put forward to determine the sources of PM 10 in different cities and definite the relationship between dust weather and air quality. Dust influenced regions and air quality of some cities are analyzed according to the latest sand storm data in Northern China in March 2002 and that of in 2001. Finally, suggestions on how to prevent air quality from being polluted by dust weather are proposed.
出处
《资源科学》
CSSCI
CSCD
北大核心
2002年第4期1-4,共4页
Resources Science
