北京香山空气负氧离子垂直变化测量研究

Experimental Research of Vertical Variation of Aero Anion in Xiangshan Hill of Beijing

空气负离子具有降尘、抑菌功能,净化空气、调节小气候、保健等效果显著,其浓度水平已成为评价城市空气清洁程度和环境优劣的重要指标。采用空气离子测量仪,对北京香山的空气正、负离子浓度进行了测量,并分析总结空气负离子的垂直变化规律。结果显示,在一定范围内空气负离子浓度随海拔高度的升高而增大,同时呈现出跳跃性。在同一个海拔高度,空气负离子浓度的变化趋势为春季>夏季>秋季。

Aero anion has the function of decreasing dust level, restraining bacterial growth, adjusting microclimate and keeping human health. Its concentration has already become an important index of evaluating air and environmental quality of a city. In this paper, the positive and negative ion concentrations were measured in Xiangshan region of Beijing. The results showed that the aero anion concentration increased and waved with the increase of altitude within a certain range. At the same altitude, the changing tendency of aero anion concentrations was in the order of in summer 〉 spring 〉 autumn.