东台山国家森林公园空气负离子浓度时空变化规律研究

The study of spatiotemporal variation of air negative ion concentration in Dongtaishan National Forest Park

为研究东台山国家森林公园空气负离子浓度(NAIC)的时空变化规律,于2019年1-12月,采用AES-80型多参数负离子检测仪对公园内选取的5个检测点的NAIC进行检测与分析。结果表明:东台山国家森林公园的NAIC在一天内,最低值(波谷)出现在中午14:00,最高值(波峰)出现在下午18:00;在一年中,最低值(波谷)出现在12月,最高值(波峰)出现在5月;不同类型环境中的NAIC空间分布规律为水边>林缘>竹林>林内>硬化地;NAIC与空气温度呈弱度负相关,与空气相对湿度呈极显著正相关,与PM_(2.5)、PM_(10)浓度均呈弱度负相关。

In order to study the spatiotemporal variation of air negative ion concentration(NAIC)in Dongtaishan National Forest Park,the AES-80 multiparameter negative ion detector was used to test and analyze the data of the five inspection points selected in the park from January to December in 2019.In Dongtaishan National Forest Park,the lowest NAIC value(trough)appeared at 14:00 and the highest value(peak)appeared at 18:00 in a day.The lowest value in a year(trough)appeared in December,while the highest value(peak)appeared in May.The spatial distribution of NAIC in different types of environment was water edge>forest edge>bamboo forest>forest>hardened land.NAIC had a weak negative correlation with air temperature,but had a significant positive correlation with air relative humidity.Furthermore,NAIC had the weak negative correlation with PM_(2.5)and PM_(10)concentrations.