合肥市城区2018—2021年大气污染时空分布特征及相关性分析  

Spatial and Temporal Distribution Characteristics and Correlation Analysis of Air Pollutants in Hefei from 2018 to 2021

作　　者：张宁[1] 廖同庆[1] 周刚 顾浩杰 张文娟[1] 左昌余 赵读俊 ZHANG Ning;LIAO Tongqing;ZHOU Gang;GU Haojie;ZHANG Wenjuan;ZUO Changyu;ZHAO Dujun(School of Integrated Circuits,Anhui University,Hefei 230601,China;Anhui Qingyu Photoelectric Technology Co.Ltd,Hefei 230061,China)

机构地区：[1]安徽大学集成电路学院,安徽合肥230601 [2]安徽庆宇光电科技有限公司,安徽合肥230061

出　　处：《安庆师范大学学报（自然科学版）》2023年第4期101-106,共6页Journal of Anqing Normal University(Natural Science Edition)

基　　金：安徽省重点研究与开发计划(202104g01020005)。

摘　　要：为了解合肥市城区的大气污染状况,本文基于合肥11个国控监测点和气象监测站2018—2021年的大气污染和气象数据,采用趋势分析方法和Kriging插值方法,充分分析了PM2.5、PM10、NO2、SO2、CO和O3的时空分布特征,进而研究了合肥市城区大气污染物之间及其与气象要素的相关性。结果表明,2018—2021年合肥市大气污染物浓度整体呈下降趋势,同时季节性特征显著,呈现冬季高、春秋次之、夏季最低的特点(O3_8h除外);PM2.5、PM10和NO2的逐时浓度呈“双峰双谷”形态,O3_1h呈“单峰单谷”形态,而CO和SO2变化趋势稳定;城区污染物浓度空间分布总体呈中部和东部区域较高,而臭氧浓度西部较高;大气污染物与气象要素主要呈负相关关系,而大气污染物之间则呈正相关关系。In order to study the situation of air pollution in the urban area of Hefei,the spatial and temporal distribution characteristic of PM2.5,PM10,NO2,SO2,CO,and O3 are fully analyzed using trend analysis approach and Kriging interpolation method based on the air pollution and meteorological data of 11 state-controlled monitoring points and meteorological moni-toring stations in Hefei from 2018 to 2021.And then,correlation between atmospheric pollutants and their correlation with me-teorological elements in urban area of Hefei are studied.The results show that the concentration of air pollutants in Hefei shows a downward trend from 2018 to 2021,while their seasonal characteristics are significant,presenting high in winter,fol-lowed by spring and autumn,and the lowest in summer(except for O3_8h).The hourly concentration of PM2.5,PM10 and NO2 shows a double-peak and double-valley pattern,O3_1h shows a single-peak,single-valley pattern,while the trends of CO and SO2 are stable.In terms of spatial distribution characteristics,the concentrations of air pollutants are generally higher in the central and eastern regions in Hefei but the ozone concentration is higher in the west.The air pollutants are negatively correlat-ed with meteorological elements,while they are positively correlated with each other.

关 键 词：大气污染物 时空分布 气象要素 相关性 合肥市 

分 类 号：X51[环境科学与工程—环境工程]