嵊州市十大森林休闲养生区空气负离子资源及影响因子分析

本研究旨在评价浙江省嵊州市十大森林休闲养生区春、夏、秋、冬4个季节空气负离子(NAI)浓度及其空气质量状况。从2016年6月到2019年6月期间,用NT-C101A便携式空气正负离子测定仪对嵊州市十大森林休闲养生区30个监测点进行了空气负氧离子测定。结果显示：（1）嵊州市十大森林休闲养生区平均负氧离子浓度6668个/cm³,超过世界卫生组织清新空气标准的6倍多;（2）嵊州市十大森林休闲养生区NAI浓度季节分布特征是夏季>春季、秋季>冬季;（3）不同森林休闲养生区的空气负离子浓度有明显差异,其中紧临跌水的监测点的空气负离子浓度最高,瞬时测定最高值达67800个/cm³;（4）NAI浓度与空气相对湿度、温度呈显著正相关关系、与PM_2.5浓度呈不显著负相关关系。浙江省嵊州市十大森林休闲养生区空气负离子资源丰富,季节变化明显,夏季较高,冬季较低。NAI浓度的变化受空气中的湿度、温度及PM_2.5等环境因素的综合影响,嵊州市茂密森林植被资源和丰富的水资源使其空气清洁、舒适,有益于人体健康的决定因素,发展森林健康产业前景广阔。

Air Negative Ion Resources and Influencing Factors in Ten Forest Leisure Areas of Shengzhou City

To evaluate the concentration of air negative ions (NAI) and their air quality in spring, summer, autumn and winter in ten forest leisure health areas of Shengzhou City, Zhejiang Province, from June 2016 to June 2019, air negative ions were measured at 30 monitoring points in ten forest leisure health areas of the city by NT-C101A portable air positive and negative ion measuring instrument. The results showed that: (1) the average negative ion concentration of the ten forest leisure health areas in Shengzhou was 6668/cm³, and more than 6 times higher than that of the world health organization clean air standard; (2) the seasonal distribution of NAI concentration in the ten forest leisure health areas in Shengzhou was characterized by summer> spring and autumn> winter; (3) there were significant differences in the concentration of negative air ions in different forest recreation areas, among them, the concentration of negative air ions was the highest at the monitoring point close to falling water, and the instantaneous determination of the highest concentration was 67800/cm³; (4) NAI had a significantly positive correlation with air relative humidity and temperature, but non-significantly negative correlation with PM_2.5 concentration. The ten forest leisure health areas in Shengzhou are rich in air negative ion resources, with obvious seasonal changes, higher in summer and lower in winter. The change of NAI concentration is affected by the environmental factors such as humidity, temperature and PM_2.5 in the air. The dense forest vegetation resources and abundant water resources in Shengzhou are the determinants of its clean and comfortable air, which is beneficial to human health, and the prospect of developing forest health industry is promising.