摘要
空气负氧离子浓度已成为反映空气质量的重要指标之一,逐渐引起广泛关注。本研究基于闽江河口湿地国家级自然保护区空气质量监测站、自动气象站的野外定位自动监测系统,对2022年6月至2023年5月不同季节空气负氧离子浓度变化规律及其影响因素进行研究。结果表明:闽江河口湿地空气负氧离子平均浓度为10741±3717个/cm^(3),夏季与冬季差异不显著,其他不同季节间差异显著。不同季节空气负氧离子浓度表现为春季>夏季>冬季>秋季。不同季节空气负氧离子浓度日变化呈现“单峰单谷”的特征,夜间明显高于白天,最高值出现在清晨或者夜间,最低值出现在日间。不同季节空气负氧离子浓度变化受大气颗粒物和环境因子的显著影响,与温度、2分钟风速呈显著负相关,但是温度与冬季空气负氧离子浓度、2分钟风速与夏季空气负氧离子浓度关系不显著。空气负氧离子浓度与PM_(2.5)、PM_(10)显著负相关。
The concentration of air negative oxygen ions has become one of the important indicators of air quality,and has gradually attracted widespread attention.Based on the field positioning automatic monitoring system of air quality monitoring station and automatic weather station in Minjiang River Estuary Wetland National Nature Reserve,this study studied the changes of air negative oxygen ion concentration and its influencing factors in different seasons from June 2022 to May 2023.The results showed that the average concentration of negative oxygen ions in the air of the Minjiang River Estuary wetland was 10741±3717 ion/cm^(3).The difference between summer and winter was not significant,and the difference among other seasons was significant.The concentrations of air negative oxygen ions in different seasons were spring>summer>winter>autumn.The diurnal variation of air negative oxygen ion concentration in different seasons presents a“single peak and single valley”shape,showing a trend higher at night and lower during the day.The highest value appeared in the morning or at night and the lowest value appeared in the daytime.The concentration of air negative oxygen ion in different seasons was significantly affected by atmospheric particulate matter and environmental factors,and has a significant negative correlation with temperature and 2-minute wind speed,but there was no significant correlation between temperature and concentraton in winter,2-minute wind speed and concentraton in summer.The concentration of air negative oxygen ions was significantly negatively influenced by PM_(2.5) and PM_(10).
作者
郭萍萍
Guo Pingping(Fujian Minjiang River Estuary Wetland National Nature Reserve Administrative Office,Fuzhou 350200,China)
出处
《环保科技》
2024年第2期1-4,44,共5页
Environmental Protection and Technology
基金
福州市自然保护地科研监测项目(2023RZRBHD01)。
关键词
空气负氧离子浓度
季节
环境因子
闽江河口湿地
air negative oxygen ion
seasons
environmental factors
Minjiang River Estuary Wetland
