北京西山空气负(氧)离子浓度日变化研究

Daily Variation of Air Negative(Oxygen) Ion Concentration in Beijing Xishan National Forest Park

2014-12-2015-11,利用北京西山国家森林公园空气负(氧)离子浓度监测试点站3台逐分钟固定自动监测设备的数据,分析了空气负(氧)离子浓度日变化特征,以及其与温度、湿度的关系,结果表明:北京西山国家森林公园日均空气负(氧)离子浓度为804个/cm^3;空气负(氧)离子浓度有明显的日变化特征,其变化规律符合正弦函数(R^2=0.895),清晨5:00-6:00为高值区,中午12:00-13:00为低值区;空气负(氧)离子浓度日变化与主要气象因素关系密切,与温度呈显著的负相关关系,随温度变化的平均变化率为46.56个/(cm^3·℃),与湿度呈显著的正相关关系,随湿度变化的平均变化率为18.70个/(cm^3·%)。以上研究结果可为改进空气负(氧)离子观测方法和指导人们日常生活提供参考。

Based on the observation of air negative ( oxygen) ion concentration data from 3 monitoring equipments by minutes from December in 2014 to November in 2015 in Beijing Xishan National Forest Park,the daily variation characteristics of air negative( oxygen) ion concentration and the correlation between temperature and humidity were analyzed. The results showed that average daily air negative ( oxygen)ion concentration of Beijing Xishan National Forest Park is 804/cm2, and the negative oxygen ionconcentrations are obviously different in a day with the change rule in sine function ( R2 =0. 895 ) . The maximum values appeared in the 5 6 am, and the minimum values appeared in the 1213pm. Daily variation of air negative ( oxygen) ion concentration and meteorological factors were closely related. It was negatively correlated with temperature and the average rate of change was 46. 56/ ( m3 · °C ) , and it waspositively correlated with humidity and the average rate of change was 18. 70/ (m3 · % ) . The results provide the reference to improve air negative(oxygen) ion observation method and guide peopled Daily life.