摘要
利用2022年5-10月在青海省西宁市典型居民区观测的空气正、负离子浓度,分析空气负离子浓度时间分布特征、评价空气清新度和清洁度,结合同期气象条件和空气污染物浓度探究其相关性。结果表明:(1)西宁市典型居民区上午的空气负离子浓度高于下午及晚上,8-10月空气负离子浓度高于5-7月。(2)西宁市居民区空气负离子浓度变化跟监测时的天气状况密切相关,空气负离子浓度变化遵循“雨天>阴天>多云>晴天”的规律。(3)空气负离子浓度高说明空气清新却不代表空气清洁,高原地区城市晴天空气负离子浓度不高,空气清新度一般,而空气清洁度较高。(4)影响西宁市居民区空气负离子浓度波动的主要气象因素为相对湿度、日照时数、水汽压、降水量和风速,抑制西宁市居民区空气负离子浓度升高的主要空气污染物为NO_(2)、PM_(10)、CO和PM_(2.5)。研究结果可为高原地区居住环境、旅游健康管理以及生态环境保护提供科学数据支撑。
Positive and negative air ion concentrations were monitored in a typical residential area of Xining City,Qinghai Province,China,from May to October 2022.The temporal distribution characteristics of negative air ion concentration were analyzed,and air freshness and cleanliness were evaluated.The correlation between negative air ion concentration and concurrent meteorological conditions and air pollutant concentrations was investigated.The following are the study findings:(1)The negative air ion concentration in a typical residential areas of Xining City is higher in the morning than in the afternoon and night.The negative air ion concentrations from August to October are higher than those from May to July.(2)The change in the negative air ion concentrations in the Xining residential area is closely related to weather conditions during monitoring,following the pattern of“rainy>cloudy>sunny”.(3)High concentrations of negative air ions indicate that air is fresh but do not necessarily mean that air is clean.On sunny days,the negative air ion concentration in plateau cities are not high and air freshness is moderate;however,air cleanliness is high.(4)Relative humidity,sunshine hours,water vapor pressure,precipitation,and wind speed mainly affect the change in negative air ion concentration.Concentrations of NO_(2),PM_(10),CO,and PM_(2.5)inhibit the increase of negative air ion concentration.The results provide scientific data supporting living environment improvement,tourism health management,and ecological environmental protection in plateau areas.
作者
马红璐
祁栋林
赵彤
曹晓云
赵全宁
张睿
MA Honglu;QI Donglin;ZHAO Tong;CAO Xiaoyun;ZHAO Quanning;ZHANG Rui(Institute of Qinghai Meteorological Science Research,Xining 810001,Qinghai,China;Qinghai Key Laboratory of Disaster Preventing and Reducing,Xining 810001,Qinghai,China)
出处
《干旱区地理》
2024年第8期1358-1366,共9页
Arid Land Geography
基金
青海省科技厅项目(2021-SF-141)
青海省气象局面上科研项目(QXMS2023-51)资助。
关键词
居民区
空气负离子
气象要素
空气质量
青藏高原
西宁市
residential areas
negative air ions
meteorological elements
air quality
Qinghai-Tibet Plateau
Xining City
作者简介
马红璐(1996-),女,硕士研究生,助理工程师,主要从事生态环境气象研究.E-mail:hl20230413@163.com;通讯作者:祁栋林(1967-),男,学士,高级工程师,主要从事大气环境和气候变化研究.E-mail:qidl007@163.com。
