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Sci Rep:中科院韩立建研究组揭示北京四十年城市化与空气污染的关系

摘要 : 2016年4月15日,国际学术权威刊物自然出版集团旗下子刊《Scientific Reports》在线发表了中科院生态环境科学研究中心韩立建研究组的一篇论文。

 2016年4月15日,国际学术权威刊物自然出版集团旗下子刊《Scientific Reports》在线发表了中科院生态环境科学研究中心韩立建研究组的一篇论文。研究发现PM2.5的增加和人口与GDP的增加正相关,并且表明人类活动可能在较短一段时间内对空气质量产生影响。




Fine particulate (PM2.5) dynamics during rapid urbanization in Beijing, 1973–2013


PM2.5 has been given special concern in recent years when the air quality monitoring station started recording. However, long-term PM2.5 concentration dynamic analysis cannot be taken with the limited observations. We therefore estimated the PM2.5 concentration using meteorological visibility data in Beijing. We found that 71 ± 17% of PM10 were PM2.5, which contributed to visibility impairment (y = 332.26e−0.232x; R2 = 0.75, P < 0.05). We then reconstructed a time series of annual PM2.5 from 1973 to 2013, and examined its relationship with urbanization by indicators of population, gross domestic production (GDP), energy consumption, and number of vehicles. Concluded that 1) Meteorological conditions were not the major cause of PM2.5 increase from 1973 to 2013; 2) With population and GDP growth, PM2.5 increased significantly (R2 = 0.5917, P < 0.05; R2 = 0.5426, P < 0.05); 3) Intensive human activity could change air quality in a short period, as observed changes in the correlations of PM2.5 concentration with energy consumption and number of vehicles before and after 2004, respectively. The success of this research provides an easy way in reconstructing long-term PM2.5 concentration with limited PM2.5 observation and meteorological visibility, and insight the impact of urbanization on air quality.

来源: Scientific Reports 浏览次数:0


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