摘要
本文依据包头市环保局提供的该市每日空气质量实况日均值,对该市2008-2012年空气质量变化,特别是Ⅲ级/轻微污染以上日的天气特点进行了分析。结果表明,近5 a(2008-2012)里,按照国家《环境空气质量标准》(GB3095-1996),包头市空气质量较好,Ⅰ级优天数逐年增多,Ⅲ级/轻微污染以上日逐年减少,本市Ⅲ级/轻微污染以上日的空气质量主要介于Ⅲ级/轻微污染与Ⅲ级/轻度污染之间;包头市Ⅲ级/轻微污染以上日的首要污染物年和季节变化较显著;强沙尘或沙尘暴天气是本市出现严重污染的主要灾害性天气因素。
With air quality daily mean data provided by Baotou environmental monitoring station,analysis is taken on the characters of air quality in Baotou from 2008 to 2012. The result shows that,in recent 5 years,according to Ambient Air Quality Standard( AAQS)( GB3095-1996),days of Baotou'sⅠLevel /Excellent is increasing year by year while days of Baotou's ⅢLevel /Slight Pollution and above is reducing year by year,the air quality in Baotou is in improving. The polluted air is inⅢlevel/ Light Pollution. The Primary Pollutant changes dramatically with annual and seasonal variation. Strong dust or sandstorm is the key reason of Huhehot's heavy air pollution.
出处
《环境与发展》
2013年第10期133-136,共4页
Environment & Development
