福州鼓山茶园不同生境空气负离子浓度及其影响因子

为研究福州市鼓山茶园不同生境空气负离子浓度空间分布规律以及空气负离子与其环境因子的关系,以茶园内7种生境作为研究对象,对各生境空气负离子浓度及环境因子进行测定。结果表明,茶园内7种生境空气负离子浓度由高到低为乔木群落高海拔茶园池塘有机茶园草地空地常规茶园,其平均负离子浓度分别为924、892、770、761、754、617、601个/cm3;在观测高度范围内(50~150cm),空气负离子浓度大致存在随海拔高度升高而增加的趋势,且150cm高度处空气负离子浓度显著大于50cm高度;各生境空气负离子与相对湿度呈极显著正相关关系,与温度、风速、气压及海拔相关性不显著;鼓山茶园空气质量总体较为清洁,各生境空气质量评价系数CI均在0.50以上,且空气质量评价系数CI值大致存在随海拔高度而增加的趋势。

Concentration of Aero-Anion and Its Influence Factors in Different Habitats of Gushan Tea Garden,Fuzhou

In this study, the aero-anion concentration and its influencing factors in seven habitats of Gushan Tea Garden were measured. The results indicated that the aero-anion concentrations in seven habitats of the tea garden followed the order of arbors 〉 high altitude tea gardens 〉 ponds 〉 organic tea gardens 〉 lawns 〉 open spaces 〉 conven- tional tea gardens. The averaged values of aero-anion concentration in these seven habitats were 924,892,770,761, 754,617,601 individual/cm3, respectively. The aero-anion concentration increased significantly with the altitude of observations （50 ~ 100 cm）, and the aero-anion concentration at 150 cm was significantly higher than at 50 cm. The aero-anion concentration had a significantly positive correlation with relative humidity, while the aero-anion concentra- tion was not related to temperature, wind velocity, air pressure and altitude. Overall, the air quality of Gushan Tea Garden was clean. The coefficient of air quality evaluation CI of seven habitats was more than 0.50 and increased with altitude of measurements.