| 摘要: |
| 以海南澄迈和辽宁沈阳的城市公园为研究对象，在 2021 年 10 月至 2022 年 3 月期间，采用KEC-900 负氧离子监测仪检测海南澄迈和辽宁沈阳的城市公园空气中 NAIs 浓度，利用海南省生态环境厅（http://hnsthb.hainan.gov.cn/）、辽宁省生态环境厅（https://sthj.ln.gov.cn/）和国家气象科学数据中心（http://data.cma.cn/）获取澄迈和沈阳城市公园附近国家检测点的空气质量指标监测数据（PM2.5、PM10、SO2、NO2、CO、O3）和气象因素数据（日均气温、日均相对湿度、日均风力等级），比较分析两地城市公园 NAIs 浓度的差异及其影响因素。结果表明：2021 年 10 月至 2022 年 3 月期间，澄迈 NAIs 月均浓度为 6 725 个 /cm3，显著高于沈阳的 262 个 /cm3（P<0.05），其中澄迈 NAIs 浓度在 10 月份最高（7 577 个 /cm3），3 月份最低（6 475 个 /cm3），而沈阳 NAIs 浓度则是 2月份最高，10 月份最低。澄迈 NAIs 浓度与CO 呈负相关（β=-640.058，P<0.01），与风力等级（β=139.565, P<0.01）、相对湿度（β=7.092，P<0.01）呈正相关；沈阳城市公园 NAIs 浓度主要与 O3（β=2.115，P<0.05）、相对湿度呈正相关（β=1.755，P<0.05）。以上结果表明澄迈城市公园 NAIs 浓度显著高于沈阳，CO、O3、风力等级、相对湿度等是影响空气中 NAIs 浓度的主要环境因素。降低 CO 浓度、增加风力等级和湿度可提高澄迈 NAIs 浓度。 |
| 关键词: 负氧离子 空气污染物 气象因素 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金项目（82060603），海南省自然科学基金高层次人才项目（820RC648），海南医学院研究生创新课题基 金（HYYS2021A11） |
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| A Comparative Study of Negative Oxygen Ions Concentrations and Its Influencing Factors in Urban Parks in Chengmai, Hainan and Shenyang, Liaoning |
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chenqiaochun1, liu lu ming2, zhang jing1, long wenfang1, liu yunru1, XU Qiongjun1, XUE Ping3, xiao sha1
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1.Hainan Medical University;2.Hainan Sanlin Travel Development Co., Ltd. Chengmai R&F Mangrove Bay Hospital;3.Shenyang Medical College
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| Abstract: |
| Using urban parks in Chengmai, Hainan, and Shenyang, Liaoning as the research objects, theKEC-900 negative oxygen ion monitor was used to detect the concentrations of NAIs in the air of urban parks in Chengmai, Hainan, and Shenyang, Liaoning during the period from October 2021 to March 2022, using the
Department of Ecology and Environment of Hainan Province(http://hnsthb.hainan.gov.cn/), the Department of Ecology and Environment of Liaoning Province(https://sthj.ln.gov.cn/) and the National Meteorological Science Data Centre(http://data.cma.cn/) to obtain air quality index monitoring data(PM2.5, PM10, SO2, NO2, CO, O3) and meteorological factor data(average daily temperature, average daily relative humidity, average daily wind scale), to compare and analyze the differences in the concentrations of NAIs between the two urban parks and their influencing factors. The results showed that from October 2021 to March 2022, the monthly average concentration of NAIs in Chengmai was 6 725 ions/cm3, which was significantly higher than that in Shenyang(262 ions/cm3) (P<0.05), with the highest concentrations of NAIs in October(7 577 ions/cm3) and the lowest in March (6 475 ions/cm3), while the concentrations of NAIs in Shenyang was the highest in February and the lowest in October. NAIs concentrations in Chengmai were negatively correlated with CO(β=-640.058, P<0.01) and positively correlated with wind scale(β=139.565, P<0.01) and relative humidity(β=7.092, P<0.01); NAIs concentrations in Shenyang city park were mainly positively correlated with O3(β=2.115, P<0.05) and relative humidity(β= 1.755, P<0.05). The above results show that the concentrations of NAIs in Chengmai city park are significantly higher than those in Shenyang and that CO, O3, wind scale, and relative humidity are the main environmental factors affecting the concentrations of NAIs in the air. Reducing CO concentration, and increasing wind scale and humidity can increase the concentrations of NAIs in Chengmai. |
| Key words: negative oxygen ions air quality factors meteorological factors |
