山东省空气质量指数的时空分布特征

摘要

Based on the daily monitoring data of air quality index (AQI) of 17 cities in Shandong province from November 1,2013 to October 31,2015,and combining with geographical location and each season's climatic characteristics of every city,the spatial and temporal distribution characteristics of air pollution in Shandong province were analyzed from the macroscopic angle.The results show that the air quality has obvious regional differences in Shandong province,The air quality is generally good in the eastern coastal areas and relatively serious in the inland cities.The AQI gradually increases from the southeast to the northwest in coastal cities.The change of AQI has obvious seasonal characteristics in Shandong province,the air pollution in winter is the most serious and that in summer is the lightest.Although the frequency of air pollution in spring is higher than thai in autumn,the pollution degree in autumn is more serious than that in spring.The air quality in the peninsula region is the best,followed by the southern region,and the worst in central and northwest regions in Shandong province.%根据2013年11月1日至2015年10月31日中国环境监测总站对山东省17个地级市的空气质量指数(AQI)的逐日监测数据,结合各地级市的地理位置和不同季节的气候特点,从宏观角度对山东省空气污染的时空分布特征进行分析.结果表明:山东省空气质量状况存在明显的地域差异,东部沿海地区空气质量普遍较好,内陆城市污染相对严重,且沿海城市的AQI呈现由东南向西北逐渐增大的趋势;山东省AQI变化具有明显的季节特征,呈现冬季污染较重、夏季污染较轻的季节特点;虽然春季发生空气污染的频率比秋季高,但是秋季发生污染时的污染程度较春季严重;4个气象区中,空气质量最好的是半岛地区,其次是鲁南地区,鲁中和鲁西北地区的空气质量较差.