摘要
基于Aura-OMI HCHO数据产品,解译并分析了2008～2017年长江三角洲(以下简称长三角)地区甲醛柱浓度的数量分布、动态规律和影响因素.结果显示:10年甲醛柱量均值为14.16×10^(15)molec/cm^2、最大值15.41×10^(15)molec/cm^2、最小值1~2.~27×10^(15)molec/cm^2、最大增速17.8%、平均增速0.17%、最大降速15.95%.时间上,10年来甲醛浓度呈波动上升的态势,以四级、三级和五级的变化为主,夏季最高,春秋次之,冬季最小,春夏秋冬四季的分担率分别是25.96%、34.28%、22.00%、17.76%.空间上,浓度整体从中部向两侧递减,沿海地区最低,高值区由西北向东南逐渐转移扩大.影响长江三角洲甲醛柱浓度变化的主要因素为自然因素和人为因素,自然因素以气温和降水为主,人为因素以能源消费总量、第二产业、第三产业、生产总值及家具和建房装修材料为主.长三角和京津冀的时空演化及影响因素有相同之处,也有不同之处.
The study of air pollution in areas with dense economically developed populations was of great significance for ensuring regional environmental security and human settlement health. This article was based on Aura-OMI HCHO data products, it interpreted and analyzed the quantitative distribution, dynamics and influencing factors of formaldehyde column concentration in the Yangtze River Delta region from 2008 to 2017. The results showed that in the past 10years the average value of formaldehyde column was 14.16×10^15molec/cm2, the maximum value was 15.41×10^15molec/cm^2, the minimum value was 1^2.27×10^15molec/cm^2, the maximum growth rate was 17.8%, and the average growth rate was 0.17%, the maximum rate of decline was 15.95%. In time, the concentration of formaldehyde has shown a fluctuating upward trend over the past 10years, mainly in the fourth, third and fifth grades, the highest in summer, followed by spring and autumn, and the smallest in winter. The share ratios in spring, summer, autumn and winter were 25.96%, 34.28%, 22.00%, and 17.76%, respectively. In space, the concentration decreases from the central to the both sides, the coastal area was the lowest, and the high value area gradually shifts from northwest to southeast. The main factors affecting the change of formaldehyde column concentration in the Yangtze River Delta were natural factors and human factors. The natural factors were mainly temperature and precipitation,while the human factors were mainly the total energy consumption, the secondary industry, the tertiary industry, the gross production value,the furniture and building decoration materials. There were spatial-temporal evolutions and influencing factors of the Yangtze River Delta and Beijing-Tianjin-Hebei have similarities and differences.
作者
李阳
巨天珍
马成
常锋
张延平
何帆
王青青
LI Yang;JU Tian-zhen;MA Cheng;CHANG Feng;ZHANG Yan-ping;HE Fan;WANG Qing-qing(College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China;Zhangye CityEnvironmental Protection Agency, Zhangye 734000, China).)
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2019年第3期897-907,共11页
China Environmental Science
基金
国家重点研发计划项目(2016YFC0500907)
甘肃省重点研发计划(17YF1FA120)
兰州市科技计划(2017RC69)
关键词
OMI
甲醛浓度
时空分布
长江三角洲
影响因素
OMI
HCHO concentrationa
temporal and spatial distribution
Yangtze river delta
impact factors
作者简介
李阳(1994-),女,甘肃金昌人,西北师范大学硕士研究生,主要从事大气污染遥感监测研究;责任作者:巨天珍.教授, jujutz@163.com.
