上海环城林带夏季大气污染净化作用及其与林带宽度的关系  

Relationship between air pollution purification and forest belt width of the Shanghai green belt in the summer season

作　　者：王小玲[1] 宋坤[1] 乐莺 陈静 姜昊 张涌嘉 宫鹤忆 王子斐 丁一[1] 施天慧 达良俊[1] WANG Xiaoling;SONG Kun;LE Ying;CHEN Jing;JIANG Hao;ZHANG Yongjia;GONG Heyi;WANG Zifei;DING Yi;SHI Tianhui;DA Liangjun(School of Ecological and Environmental Sciences,East China Normal University,Shanghai 200241,China;Shanghai Public Green Space Construction Affairs Center,Shanghai 201199,China)

机构地区：[1]华东师范大学生态与环境科学学院,上海200241 [2]上海市公共绿地建设事务中心,上海201199

出　　处：《华东师范大学学报（自然科学版）》2021年第3期128-137,共10页Journal of East China Normal University(Natural Science)

基　　金：上海市绿化和市容管理局科学技术项目(G191006)。

摘　　要：对上海市环城绿带宝山盛宅段与浦东康桥段夏季近地面主要大气污染物(PM_(2.5)、PM_(10)、CO、NO_(2))进行了为期1个月的持续监测,其中,每一样段垂直于高速公路以100 m间隔设置4个监测样点.依据国家《环境空气质量标准》(GB3095—2012),评价各监测点的大气环境质量;并量化了不同宽度林带对不同污染物的净化效益;通过多元线性回归分析,研究了气象条件和环境本底对林带最大净化效益的影响.结果表明:①环城绿带对PM_(2.5)、PM_(10)、NO_(2)有明显的净化作用,对CO起蓄积作用;②当林带宽度为300 m时污染物净化作用达到最大;③林内外湿度差和温度差对林带颗粒物PM_(2.5)和PM_(10)最大净化效益的影响程度较大,环境本底对林带NO_(2)最大净化效益的影响程度较大,湿度差对林带CO最大净化效益的影响程度较大.研究结果可为环城绿带在净化大气方面的林地管护及改造提供理论基础.In this study,ground-level air pollutants(i.e.,particulate matter(PM),NO_(2),and CO)were monitored at two transects of an urban-road-green-belt of Shanghai for one month during the summer season.Four monitoring sites at 100m intervals were set along each transect from the road to the inside.The air pollution was evaluated for each site based on China’s national standard,and the variation in air pollution purification ability(i.e.,removal percentage)was compared among sites with different distances to the road.The effects of meteorological condition and pollution background on maximum removal percentage of each air pollutant were evaluated by multiple regression analysis.The results showed that the green belt greatly contributed to reducing PM_(2.5),PM_(10),and NO_(2);however,the green belt also produced a cumulative effect on CO generation within its boundaries.The green belt had the greatest air pollution purification performance at sites with 300m distance to the road for most pollutants in both transects.The maximum removal percentages of PM_(2.5)and PM_(10)were correlated to air humidity difference and air temperature difference between outer and inner of forests mostly,while the maximum removal percentages of NO_(2)were correlated to the pollution background and maximum removal percentages of CO were correlated to air temperature difference.The results can provide a theoretical foundation for forest transform and arrangement aimed at air pollution purification in the green belt.

关 键 词：上海环城绿带 大气污染物 林带宽度 城市森林 生态效益 

分 类 号：X835[环境科学与工程—环境工程]