摘要
高浓度的大气细颗粒物PM_(2.5)是产生雾霾天气的一个重要原因,研究其时空变化特征具有重要的指导意义.文章从时间和空间的角度分析了泉州市近5年PM_(2.5)浓度的时空变化特征与影响因素.结果表明:泉州市空气质量总体较好,PM_(2.5)浓度的年均值在24~27μg/m^(3),且存在明显的季节、月份和日变化规律;4个大气环境监测站PM_(2.5)浓度的空间变化也很明显,其中涂山街和津头埔的浓度较高,万安次之,而清源山最低.PM_(2.5)浓度的空间变化差异与周边环境的植被覆盖情况有关,植被覆盖度越高,PM_(2.5)浓度越低.PM_(2.5)与其他大气污染物浓度也存在一定的相关性,其中与PM_(10)的相关性最强,与O3的相关性最弱.研究结果也发现,当PM_(2.5)浓度大于75μg/m3的异常情况出现时,它与区域的气象因素存在一定关联,这可作为大气细颗粒物管控的参考依据.
High concentration of atmospheric fine particulate matter PM_(2.5) is an important cause of haze weather, so it is of great significance to study its spatio-temporal variation characteristics. This paper analyzed the spatio-temporal characteristics and influencing factors of PM_(2.5) concentration in Quanzhou city in the past five years from the perspective of time and space. The results showed that the overall air quality in Quanzhou was good.The annual average value of PM_(2.5) concentration is within the range of 24-27 μg/m^(3),and there were obvious seasonal, monthly and daily variation patterns;the spatial variation of PM_(2.5) concentration of the four air quality monitoring stations was also obvious, among which Tushan Street and Jintoupu had higher concentration, followed by Wan’an, and Qingyuan Mountain had the lowest. The spatial variation of PM_(2.5) concentration was related to the vegetation coverage of the surrounding environment, and the higher the vegetation coverage, the lower the PM_(2.5) concentration. There was also a certain correlation between PM_(2.5) and other atmospheric pollutants, among which the correlation with PM_(10) is the strongest and O3 is the weakest. This study also finds that when an abnormal situation occurs that PM_(2.5) concentration was greater than 75 μg/m3,it has a certain correlation with weather factors, which can be used as a reference for the control of atmospheric fine particulate matter.
作者
卓鸿
陈永山
ZHUO Hong;CHEN Yongshan(School of Resource and Environmental Science,Quanzhou Normal University,Quanzhou Fujian 362000,China;Environmental Science Institute,Quanzhou Normal University,Quanzhou Fujian 362000,China)
出处
《泉州师范学院学报》
2021年第2期71-78,共8页
Journal of Quanzhou Normal University
基金
福建省科技厅农业引导性(重点)项目(2018N0028)
福建省教育厅中青年教师教育科研项目(JAT200569)。
关键词
大气细颗粒物
空气质量
时空变化
植被覆盖
泉州
atmospheric fine particulate matter
air quality
spatio-temporal variation
vegetation coverage
Quanzhou City
