摘要
利用2000-2007年中国83个重点城市的PM10颗粒物浓度,对中国地区近8年来PM10颗粒物浓度的时空变化特征进行了分析,同时也分析了中国重点城市近8年来PM10浓度的季节变化特征。结果表明:近8年来,中国重点城市的大气颗粒物浓度有所下降,其季节统计结果表明,夏季PM10浓度最低,说明了降水对颗粒物有一定的清除作用;冬季PM10浓度最高,主要是由于北方地区燃煤带来的污染,导致了该时段内PM10浓度较高。
Using data of PM10 concentration in 83 major cities of China during 2000 -2007, the space -time variations of PM10 concentration in China in latest 8 years were analyzed. Simultaneously, the seasonal variations of PM10 concentration were also analyzed. The results indicated that in the latest 8 years, the PM10 concentration was decreased in the major cities of China. The seasonal variations showed that the PM10 concentration in summer was the lowest, which meant that precipitation could eliminate the particulate matter in some degree. While the PM10 concentration in winter was the highest, which maybe caused by coal burning in north China and led to the high concentration.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2009年第9期51-54,共4页
Journal of Arid Land Resources and Environment
