河南省空气质量变化特征及潜在源区研究  

Research on the characteristics and potential source areas of air quality changes in Henan province

作　　者：谢国红[1] 田成杰 XIE Guohong;TIAN Chengjie(School of Resources and Environment,Henan Institute of Science and Technology,Xinxiang 453003,China)

机构地区：[1]河南科技学院资源与环境学院,河南新乡453003

出　　处：《河南科技学院学报(自然科学版)》2025年第2期70-81,共12页Journal of Henan Institute of Science and Technology(Natural Science Edition)

基　　金：河南省自然科学基金面上项目(232300421169)。

摘　　要：目的根据河南省2022年的空气质量和气象数据,分析2022年河南省空气污染时空分布特征,以及以河南省不同区域代表性城市为受点的PM_(2.5)的输送特征与潜在源区.方法利用HYSPLIT-4后向轨迹模式模拟了河南省不同区域的全年气团后向轨迹,结合逐时PM_(2.5)数据进行聚类分析,并通过潜在源贡献因子分析(PSCF)、质量浓度权重轨迹分析(CWT)研究影响各城市颗粒物质量浓度的潜在源区及贡献程度.结果全省空气质量分布有明显的区域性特征,北部地区空气质量明显劣于其他地区.从污染物变化来看,六种污染物的分布具有明显的季节性分布特征,除O_(3)外其他污染物均表现为冬高夏低的U型分布,O3则表现为夏高冬低的局势.此外,PM_(2.5)是占比最多的首要污染物,河南省各城市多数情况以PM_(2.5)重污染为主;后向轨迹聚类分析表明河南省中部以北城市主要以西北方向气团传输为主,而其他地区主要以省内短距离传输气团为主;潜在源区分析表明河南省不同地区的潜在源区具有一定相似性,陕晋地区、豫鲁地区、河北省北部是影响河南省各地区颗粒物质量浓度的主要潜在源区.结论河南省空气质量具有地域性分布特征,主要以颗粒物污染为主,其污染来源多数为北方城市,尤其是地处京津冀大气污染传输通道上的城市.Objective Based on the air quality and meteorological data of Henan Province in 2022,this study analyzed the spatiotemporal distribution characteristics of air pollution in Henan Province,and analyzed the transport characteristics and potential source areas of PM_(2.5)in representative cities in different regions of Henan Province.Methods The HYSPLIT-4 backward trajectory model was used to simulate the annual backward trajectory of air masses in different regions of Henan Province.Cluster analysis was conducted using hourly PM_(2.5)data,and potential source contribution factor analysis(PSCF)and concentration weighted trajectory analysis(CWT)were used to study the potential source areas and contribution degrees that affect the particle concentration in each city.Results The distribution of air quality in the whole province has obvious regional characteristics,and the air quality in the northern region is significantly worse than that in other regions;From the perspective of pollutant changes,the distribution of the six pollutants has obvious seasonal distribution characteristics.Except for O_(3),all other pollutants show a U-shaped distribution of high in winter and low in summer,while O_(3)shows the opposite trend of high in summer and low in winter.In addition,PM_(2.5)is the primary pollutant with the highest proportion,and most cities in Henan Province are heavily polluted by PM_(2.5);Backward trajectory clustering analysis shows that cities north of central Henan Province mainly transmit air masses in the northwest direction,while other regions mainly transmit air masses over short distances within the province;The analysis of potential source areas shows that different regions in Henan Province have certain similarities in potential source areas.The Shaanxi Shanxi region,the Henan Shandong region,and the northern part of Hebei Province are the main potential source areas that affect the concentration of particulate matter in various regions of Henan Province.Conclusion The air quality in Henan Province has re

关 键 词：空气质量 后向轨迹聚类分析 PM_(2.5) 潜在源贡献分析 质量浓度权重轨迹分析 

分 类 号：X515[环境科学与工程—环境工程]