地理学报 ›› 2015, Vol. 70 ›› Issue (1): 110-120.doi: 10.11821/dlxb201501009
王占山1(), 李云婷1, 陈添2, 张大伟1(
), 孙峰1, 潘丽波3
收稿日期:
2014-08-20
修回日期:
2014-10-15
出版日期:
2015-01-20
发布日期:
2015-06-17
作者简介:
作者简介:王占山(1987-), 山东潍坊人, 硕士, 工程师,主要从事大气环境模拟与空气质量预报预警研究。E-mail:
基金资助:
Zhanshan WANG1(), Yunting LI1, Tian CHEN2, Dawei ZHANG1(
), Feng SUN1, Libo PAN3
Received:
2014-08-20
Revised:
2014-10-15
Online:
2015-01-20
Published:
2015-06-17
Supported by:
摘要:
对2013年北京市35个自动空气质量监测子站的PM2.5数据进行分析,探讨PM2.5的时间分布特征、空间分布特征以及与前体物和大气氧化性的相关性关系。结果表明,PM2.5浓度由高到低的季节依次是冬季、春季、秋季和夏季,平均浓度分别为122.8 μg·m-3、85.1 μg·m-3、84.9 μg·m-3和79.1 μg·m-3;各类监测站中浓度由高到低的依次是交通站、城区站、郊区站和区域站,平均浓度分别为102.2 μg·m-3、91.8 μg·m-3、89.1 μg·m-3和88.7 μg·m-3。PM2.5月均浓度呈波浪型分布,在1月份、3月份、6月份和10月份各出现一个峰值。全年来看,交通站PM2.5的日变化规律呈单峰型分布,其他站点呈双峰型分布。分地区来看,年均PM2.5浓度由高到低的依次是东南部、西南部、城六区、东北部和西北部。PM2.5浓度与NO2、SO2和OX浓度均为显著正相关,表明前体物和大气氧化性对PM2.5浓度有显著影响。
王占山, 李云婷, 陈添, 张大伟, 孙峰, 潘丽波. 2013年北京市PM2.5的时空分布[J]. 地理学报, 2015, 70(1): 110-120.
Zhanshan WANG, Yunting LI, Tian CHEN, Dawei ZHANG, Feng SUN, Libo PAN. Spatial-temporal characteristics of PM2.5 in Beijing in 2013[J]. Acta Geographica Sinica, 2015, 70(1): 110-120.
表1
2013年PM2.5浓度与之前研究的对比"
时间 | 年份 | 平均浓度/μg·m-3 | 文献 |
---|---|---|---|
年均 | 2013 | 89.5 | 本研究 |
2000 | 129 | 杨复沫等[ | |
2005 | 71.1 | 陈媛等[ | |
2009-2010 | 92.6 | Liu等[ | |
春季 | 2013 | 85.1 | 本研究 |
2001 | 62.1 | Zhang等[ | |
2003 | 111 | 徐敬等[ | |
2006 | 165 | Yu等[ | |
2010 | 88.6 | Liu等[ | |
2013 | 86.9 | 赵晨曦等[ | |
夏季 | 2013 | 79.1 | 本研究 |
2003 | 131.6 | Cao等[ | |
2003 | 71 | 徐敬等[ | |
2006 | 69.4 | Yu等[ | |
2008 | 68.9 | 刘辉等[ | |
2009 | 73.8 | Liu等[ | |
秋季 | 2013 | 84.9 | 本研究 |
2003 | 110 | 徐敬等[ | |
2006 | 52 | Yu等[ | |
2009 | 103.9 | Liu等[ | |
冬季 | 2013 | 122.8 | 本研究 |
2003 | 115.6 | Cao等[ | |
2003 | 108 | 徐敬等[ | |
2008 | 94.2 | Deng等[ | |
2009 | 106.6 | Liu等[ | |
2012 | 122.9 | 赵晨曦等[ |
表2
2013年北京市PM2.5与SO2、NO2、O3和OX的相关系数"
站点功能 | 污染物 | NO2 | SO2 | O3 | PM2.5 | OX |
---|---|---|---|---|---|---|
交通站 | NO2 | 1.00 | ||||
SO2 | 0.46 | 1.00 | ||||
O3 | -0.38 | -0.15 | 1.00 | |||
PM2.5 | 0.71 | 0.57 | -0.29 | 1.00 | ||
OX | 0.62 | 0.29 | 0.39 | 0.46 | 1.00 | |
区域站 | NO2 | 1.00 | ||||
SO2 | 0.70 | 1.00 | ||||
O3 | -0.52 | -0.18 | 1.00 | |||
PM2.5 | 0.74 | 0.61 | -0.25 | 1.00 | ||
OX | 0.14 | 0.35 | 0.67 | 0.32 | 1.00 | |
郊区站 | NO2 | 1.00 | ||||
SO2 | 0.63 | 1.00 | ||||
O3 | -0.57 | -0.26 | 1.00 | |||
PM2.5 | 0.73 | 0.56 | -0.27 | 1.00 | ||
OX | 0.16 | 0.25 | 0.63 | 0.34 | 1.00 | |
城区站 | NO2 | 1.00 | ||||
SO2 | 0.61 | 1.00 | ||||
O3 | -0.57 | -0.21 | 1.00 | |||
PM2.5 | 0.74 | 0.59 | -0.30 | 1.00 | ||
OX | 0.26 | 0.34 | 0.54 | 0.41 | 1.00 |
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