中国水土保持科学2013，Vol.11Issue(4)：99-103,5.
城市不同绿地PM2.5质量浓度日变化规律
Diurnal variations in the mass concentration of suspended Particulate Matter 2.5 (PM2.5) of different urban green space
摘要
Abstract
Taking the Beijing Forestry University campus (BFU) (the green coverage is 42.2％),Olympics Forest Park (OFP) (the green coverage is 70.3％) and Jiufeng National Forest Park (JNFP) (the green coverage is 96.2％) as the study area,and their surrounding main roads as the contrast,the diurnal variation characteristics of Particulate Matter 2.5 (PM2.5) of different urban green spaces were analyzed by observation means.The results indicated that:1) The PM2.5 mass concentrations decreased progressively with the increase of green coverage rate.The highest values of PM2.5 mass concentrations in BFU,OFP and JNFP were 140,62 and 48 μ g/m3 respectively,which were strongly higher than the national annual average standard of China (35 μg/m3).2) There was no significant difference in the PM2.5 mass concentration between urban green space and the corresponding surrounding roads.3) Weather conditions strongly influenced the PM2.5 mass concentrations.The mass concentrations were much higher in cloudy days (80-110 μg/m3),but significantly decreased by approximately 80％ after precipitation.关键词
PM2.5质量浓度/城市绿地/日变化/气象条件Key words
PM2.5 mass concentration / urban green space / dirunal variation/ weather conditions分类
资源环境引用本文复制引用
郭含文,丁国栋,赵媛媛,高广磊,陈明秀,王海勇,赖文豪..城市不同绿地PM2.5质量浓度日变化规律[J].中国水土保持科学,2013,11(4):99-103,5.基金项目
中央高校基本科研业务费专项资金资助"北京地区不同林分及树种叶片对P2.5阻滞能力研究"(201217) （201217）
林业公益性行业科研专项"典型区域森林生态系统健康维护与经营技术研究"(200804022A) （200804022A）
