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Analysis on Air Pollution in Deyang City
Author(s): 
Pages: 45-49
Year: Issue:  9
Journal: Environmental Science and Management

Keyword:  Deyang cityair pollution indexwavelet analysis;
Abstract: 通过对德阳市的空气污染指数相关指标的统计分析和小波分析,得到以下结论:(1)二氧化硫作为首要污染物出现的天数在波动变化中呈下降态势,且主要集中在春、冬季;而可吸入颗粒物则处于波动中上升的状态.(2)德阳市的空气污染指数以288 d为主周期,以25 d、60d和149 d为次周期;近7年期间出现了某些异变值.(3)德阳市的空气质量主要取决于春、冬季的空气污染情况,四季变化呈现出冬季污染严重,夏季污染较轻的特点,且有逐年加剧的倾向.
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