中国大气污染时空演化与交互耦合分析  

Spatio-temporal Evolution and Interactive Coupling Analysis of Air Pollution in China

作　　者：陆庆恒 王晓红[1] 陈胤辰 戴遵郦 于乐江[2] LU Qingheng;WANG Xiaohong;CHEN Yinchen;DAI Zunli;YU Lejiang(College of Environmental and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;SOA Key Laboratory for Polar Science,Polar Research Institute of China,Shanghai 200136,China)

机构地区：[1]青岛科技大学环境与安全工程学院,山东青岛266042 [2]中国极地研究中心,自然资源部极地科学重点实验室,上海200136

出　　处：《环境科学与技术》2024年第2期172-182,共11页Environmental Science & Technology

基　　金：山东省自然科学基金(ZR2020MD016);山东省重点研发计划(2023RKY07014);青岛市社科规划基金(QDSKL2201224)。

摘　　要：该研究利用2015年1月-2021年2月中国近1500个大气质量监测站点的数据,结合小波分析和收敛交叉映射分析(CCM),研究了9个分区内PM_(2.5)、PM_(10)、O_(3)、NO_(2)、SO_(2)和CO浓度的时空演化、周期性特征和交互耦合。发现大部分站点的污染物浓度呈季节性振荡,夏季低、冬季高,O_(3)为例外。华北及周边地区污染物浓度高,华南和青藏地区低,但东南沿海地区O_(3)浓度增多。各污染物年均浓度整体呈下降趋势,其中2020年PM_(2.5)、PM_(10)、NO_(2)、SO_(2)和CO比2015年分别降低了33.08%、33.51%、18.12%、60.66%和31.86%,而O_(3)升高了7.07%。NO_(2)逐渐取代SO_(2)成为主要污染物。季节变化和区域分布存在明显差异,不同污染物之间双向交互耦合关系显著,其中PM_(10)、PM_(2.5)和CO交互耦合强度高,而O_(3)交互耦合最弱。CO和NO_(2)控制对PM_(2.5)和O_(3)控制至关重要,协同控制具有重要意义。The study utilized hourly monitoring data from approximately 1500 ground-level air quality monitoring stations across China from January 2015 to February 2021.By integrating wavelet analysis and convergent cross mapping(CCM),the research examined the spatiotemporal evolution,periodic characteristics,and interactive coupling of PM_(2.5),PM_(10),O_(3),NO_(2),SO_(2),and CO concentrations in nine regions.The findings revealed that the concentrations of most pollutants exhibited significant seasonal oscillations,with lower levels in summer and higher levels in winter,except for O_(3).High pollutant con⁃centrations were predominantly observed in North China and its surrounding areas,while lower concentrations were typical⁃ly found in South China and the Qinghai-Tibet Plateau,with an increase in O_(3) concentrations in the southeastern coastal region.Overall,the annual average concentrations of PM_(2.5),PM_(10),NO_(2),SO_(2),and CO decreased by 33.08%,33.51%,18.12%,60.66%,and 31.86%respectively in 2020 compared to 2015,whereas O_(3) concentrations increased by 7.07%.NO_(2) gradually replaced SO_(2) as the primary pollutant.There were distinct seasonal variations and regional disparities,with significant bidirectional interactive coupling among different pollutants.The coupling strength was higher between PM10,PM2.5,and CO,while it was weakest for O_(3).The control of CO and NO_(2) is crucial for managing PM2.5 and O_(3),highlighting the significance of coordinated control measures.

关 键 词：大气污染 时空演化 小波分析 交互耦合 CCM 

分 类 号：X51[环境科学与工程—环境工程]