摘要
根据2013年北京市PM2.5监测数据,系统分析了北京市PM2.5污染的时空分布特征,并利用克里格插值统计了四季PM2.5不同浓度区间的国土面积。结果显示:2013年全市PM2.5年均浓度为89.5μg/m3,超过年均35μg/m3的国标1.56倍;PM2.5浓度由高到低的季节依次是冬季、春季、秋季和夏季;空间分布上PM2.5呈现明显的南北梯度分布特征;2013年PM2.5平均浓度达标对应的国土面积占比夏季最大为73%,冬季最小为22%。
This paper analyzed the spatial and temporal distribution of PM2. 5and discussed the land area of different concentrations using Kriging interpolation based on the fine particulate matter monitoring data released by Beijing Municipal Environmental Monitoring Center in 2013. Analysis results showed that the city＇ s annual average PM2. 5concentration was89. 5 μg / m3 in 2013 exceeding the national standard（ 35 μg / m3） 1. 56 times; Seasonal variations concentrations of PM2. 5were as follows： winter spring autumn summer; PM2. 5showed significant north-south gradient distribution; the proportion of land area in which average PM2. 5concentration was below 75 μg / m3 was the largest in Summer with 73% while that was the least in Winter with 22%.
出处
《环境工程》
CAS
CSCD
北大核心
2015年第10期43-46,共4页
Environmental Engineering
基金
北京市科技计划课题(Z131100006113009)
环保公益性行业科研专项(201409005)
国家科技支撑计划(2014BAC23B03)
中心课题(2015-01-02)
关键词
PM2.5
季节分布
空间分布
北京市
PM2.5
seasonal distribution
spatial distribution
Beijing
