摘要
通过测量上海城市外环林带和植物园空气离子、温度、相对湿度、风速及可吸入颗粒物浓度(PM10)等指标,研究分析了城市绿地空气离子与环境因子的相关关系。结果表明:上海外环林带旷地和道路中的空气清洁度指数(CI)为0.29和0.21,处于临界值;林中和林缘的CI分别为0.63和0.67,达到中等清洁程度;上海植物园中平均空气清洁度指数为0.64,最高达到0.83。一天中空气负离子含量的高峰值出现在7:00—8:00,18:00—19:00,低峰值出现在13:00—14:00。空气负离子浓度与空气相对湿度、风速成正相关显著,而与温度、PM10成负相关显著。空气湿度在对城市空气负离子的影响过程中起到了主要作用。建议建设以提高空气质量为目的的城市森林网络系统。
By measuring the concentration of the air ions, temperature, air humidity, wind speed and PM10 in the outer-ring forest-belt and botanic garden of Shanghai, This paper analyzed the correlation between the air ions and its environmental influential factors, finding that in the outer-ring the air Cleaning Index （CI） in the wilds and road were 0.29 and 0.21, while in the forest-belt and the edge of the forest-belt were 0.63 and 0.67.In the botanic garden the average CI was 0.64 and the highest CI was 0.83. It shows that in a day, the content peak of anion appeared at 7：00---8：00 and 18：00---19：00, while the lowest content of anion appeared at 13：00---14：00. There is negative correlation between air anions and PM10 and temperature, and there is plus correlation between air anions and humidity and wind speed. The air humidity played major role to the air anions of the atmosphere in the Urban Greenery patches. Based on this determination results, the author suggests setting up urban forest network system for improving urban air quality.
出处
《生态环境》
CSCD
北大核心
2006年第5期1024-1028,共5页
Ecology and Environmnet
基金
国家科技部重点科技项目(2002BA516A19)
上海市重点学科研究项目(023912064)
