摘要
开展近地表大气中的二氧化硫浓度长时序空间格局动态变化监测,对于保护生态环境、评估节能减排成效具有重要意义。该文利用OMI L3 SO2产品数据分析2008-2017年近地表中国区域SO2柱浓度的年际、季相、月际及空间变化特征,并与SO2排放量统计数据进行对比分析,结果表明:(1)从年际变化来说,2008-2017年中国SO2柱浓度总体呈下降趋势,于2016年下降至最低值,2017年SO2柱浓度与2016年持平,2008-2017年OMI SO2柱浓度与国内SO2排放量相关系数可达0.74;(2)在空间分布上,中国中东部地区SO2柱浓度较高,尤其是京津冀及其周边地区,而西部地区SO2柱浓度普遍较低,如西藏、青海、新疆等地区;(3)从各年份SO2柱浓度分布情况可以得出,自2012年起全国SO2柱浓度高值区范围逐年缩小,京津冀及山东地区高值区范围缩小程度最为明显,至2015年全国已不存在SO2柱浓度高值区;(4)从季相变化来看,SO2柱浓度高低排序为:冬季>秋季>春季>夏季;SO2柱浓度月均值呈现以年为周期的波动形式,SO2柱浓度最低值一般出现在每年的5-7月,最高值一般出现在11、12、1、2月,与季度变化趋势相一致。近10年来中国制定了许多环保政策,加大了环保治理力度,如节能减排,淘汰落后产能,优化产业结构,近地表大气SO2柱浓度不断下降的时序遥感监测结果充分证明了中国近年来在环保领域所取得的重大进步。
It is of great significance for protecting the ecological environment and evaluating the effect of energy saving and emission reduction to monitor the long-time spatial pattern of SO2concentration in the near-surface atmosphere.The characteristics of annual,seasonal,monthly and spatial variations of SO2column concentration in near-surface China from 2008 to2017 were analyzed using OMI L3 SO2data.The statistical data of SO2emission were used to comparative analysis.The results show that in terms of annual variation,the SO2column concentration in China decreased from 2008 to 2017.It dropped to its lowest level in 2016,and the SO2column concentration in 2017 was the same as that in 2016.The correlation coefficient between OMI SO2column concentration and domestic SO2emissions during 2008-2017 was 0.74.As for spatial distribution,the SO2column concentration was higher in the central and eastern part of China,especially in Beijing-Tianjin-Hebei and its surrounding areas.However,the SO2column concentration was generally low in the western region,such as Tibet,Qinghai,Xinjiang and so on.From the distribution of SO2column concentration,the range of high SO2column concentration has been shrinking year by year since 2012.The range of high SO2column concentration in Beijing-Tianjin-Hebei and Shandong areas reduced most obviously.By 2015,there was no high SO2column concentration in the whole country.With regard to seasonalchange,SO2column concentration ranked as winter>autumn>spring>summer.The monthly mean value of SO2column concentration showed a wave pattern with annual cycle.The lowest value of SO2column concentration generally occurred from May to July every year,and the highest value generally appeared in November,December,January and February,which was consistent with the seasonal change.In the past ten years,China has formulated many environmental protection policies and strengthened environmental protection governance,such as energy conservation and emission reduction,eliminating backward production capacity and optim
作者
孙乾
顾晓鹤
孙林
曾文
杨贵军
SUN Qian;GU Xiaohe;SUN Lin;ZENG Wen;YANG Guijun(College of Geomatics,Shandong University of Science and Technology,Qingdao 266590,China;Key Laboratory of Quantitative Remote Sensing in Agriculture of Ministry of Agriculture,Beijing Research Center for Information Technology in Agriculture,Beijing 100097,China;National Engineering Research Center for Information Technology in Agriculture,Beijing 100097,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2019年第7期154-160,共7页
Environmental Science & Technology
基金
国家自然科学基金（41571323,41771408）
院创新能力建设专项（KJCX20170705）
山东省自然科学基金（ZR201702210379）
