郑州市公园绿地春季空气质量评价

Study on Air Quality in Park Green-Spaces of Zhengzhou City in the Spring Season

通过测定郑州市森林公园、人民公园与河南农业大学校园的空气离子日进程,评价郑州市代表性公园绿地的空气质量,分析空气负离子与空气温度、相对湿度、风速及可吸入颗粒物浓度(PM10)等指标间的相关关系。结果表明:公园绿地中,空气负离子数量在1天中的高峰值出现在8:00—9:00,17:00—18:00,低峰值出现在14:00—15:00;空气负离子浓度与空气相对湿度、风速呈正相关关系,而与空气温度、PM10呈负相关关系。

The air quality of the representative park green-spaces in Zhengzhou City in the spring season was assessed by determining the diurnal change process of the air ions in Zhengzhou Forest Park, People＇s Park and the campus of Henan Agriculture University. Meanwhile, the correlations among the negative air ion and air temperature, relative humidity, wind speed and inhalable particulate matter （PM10） were analyzed. The results showed that the daily peak value of the negative air ions in the park green-spaces in the spring appeared at 8：00--9：00 am and 17：00--18：00 pm respectively. While the diurnal minimum value occurred at 14：00--15：00 pm. There was a positive correlation between the quantity of negative air ions and relative air humidity, as well as the wind speed, but there was a negative correlation between the quantity of negative air ions and air temperature or PM10.