Effect of Fountain on Variation of Aero-anion and Its Correlation with Meteorological Factors

As a new resource, aero-anion is known as "air vitamin and auxin", and it is of great significance for improving air quality in the city. In this paper, floating fountains of the Songhua River in Jilin are the research subjects, measuring its surrounding aero-anion concentrations, temperature, relative humidity, and wind speed and wind direction. The authors studied the variation of aero-anion concentrations around the fountain and its correlative factors. The results showed that: the aero-anion concentrations significantly increased after the fountain opened, aero-anion concentrations were quite different from the fountain in the center at different distances, aero-anion concentrations and relative humidity and wind speed showed a positive correlation in the environmental, and wind direction had a greater impact on aero-anion concentrations around the fountain.