【摘要】 收集了2006年《重点城市空气质量日报》中中国86个重点城市空气质量主要分析指标——空气污染指数(API)、首要污染物、空气质量级别,并对数据进行统计分析。结果表明:(1)总体来说,中国城市大气质量良好;(2)城市大气污染以煤烟型污染为主,大气中以TSP、SO2和NOX作为首要污染物出现的频率依次递减;(3)城市大气污染最严重的季节是冬季,最轻的季节是夏季;(4)城市大气环境质量表现出从北到南、从沿海至内陆逐步变差的趋势。更多还原

【Abstract】 Analyze the main index,which include API,primary pollutant,air quality level, in 86 cities of china from Urban Ambient Air Quality Daily Report of 2006.Main results are as follows:(1)on the whole,the air quality of national city is satisfactory;(2)the contamination of atmosphere give priority to type of soot pollution,the rate of TSP,SO2 and NOX appeared as primary pollutant is decreasing;(3)urban air pollution is the most serious in winter,the most slight in summer;(4)the quality of urban air take on a worse trend from north to south,from coastal to inland.更多还原