不同环境场所夏季空气负离子浓度分布特征及其与环境因子的关系

摘要

大气离子是由许多自然和人为的原因产生,并且它们的浓度在不同环境场所下差别很大。以我国南部沿海某省份作为研究区域,挑选了近10处有代表性的环境场所进行为期一周的实测和研究,收集了空气正、负离子浓度、风速、空气温度、相对湿度等数据。研究显示,空气负离子浓度与风速、水、植物、相对湿度等有较为密切的关系,其中最主要的影响因素是水,其次是风,最小的是气温。为了改善城市生态环境,建议在城市规划建设中采取有效措施以提高空气负离子浓度。%Atmospheric ions are produced by many natural and anthropogenic sources and their concentrations vary widely between different environments.In this study,a week＇s testing was conducted in 10 different typical sites of a southern coastal province,China.The measurements included negative air ion concentration,positive air icon concentration,wind speed,air temperature,relative humidity,etc.The results showed that negative air icon concentration had a closer relation with wind speed,water,plants and air humidity than other factors,the most important factor was water,followed by wind,and the minimal factor was air temperature.In order to improve the urban air quality and ecological environment,the effective measures should be taken to increase negative air anion concentration in urban planning and construction.