摘要
【目的】筛选出吸附能力较强的树种,为改善大气污染提供参考。【方法】在2017年4月末采集北京农学院梧桐、国槐、桧柏、银杏、金叶复叶槭树种叶片,应用气溶胶再发生器测得单位叶面积对不同粒径大气颗粒物(TSP、PM10、PM2.5、PM1.0)的滞留量,并用电镜扫描叶表面微观形态。【结果】结果表明:常见树种单位面积叶片对不同粒径大气颗粒物的吸附能力各有差异。对TSP和PM10吸附能力大小依次为:银杏、桧柏、国槐、金叶复叶槭、梧桐,而对PM2.5和PM1.0的吸附能力最大是桧柏,最小的是梧桐,银杏、国槐、金叶槭叶片对于PM2.5和PM1.0吸附能力大小各不相同。【结论】不同树种叶片表面特征对颗粒物的吸附有很大的影响,在利用树木叶片治理大气颗粒物污染过程中,可以优先选择银杏和桧柏。
【Objective】The tree species with strong adsorption capacity were selected to provide reference for improving air pollution.【Methods】At the end of April 2017,collecting the leaves of Firmiana simplex、Sop-hora japonica、Juniperus chinensis、Ginkgo biloba、acer neg-undo aurea from Beijing University of Agriculture.Application of aerosol re-generator to determine the retention of air particulates （TSP,PM 10 ,PM 2.5 ,PM 1.0 ） with different particle sizes by leaf area,and electron microscope scanning of the surface morphology of the leaf.【Results】The results showed that there were differences in the adsorption capacity per unit leaf area of different common tree species for atmospheric particles.The adsorption capacities of TSP and PM10 are in order of Ginkgo biloba,Juniperus chinensis,Sophora japonica,Acer negun doaurea,Firmiana simplex .the maximal adsorption capacity for PM 2.5 and PM 1.0 was Juniperus chinensis,the minimum was Firmiana simplex, and the order of adsorption capacity for PM 2.5 and PM1.0 of Ginkgo biloba,Sophora japonica and Acer negundo aurea was different.【Conclusion】The leaf surface characteristics of different tree species have a great influence on the adsorption of particulate matter. Ginkgo and juniper can be chosen as the priority when using tree leaves to control airborne particulate matter pollution.
作者
陈玉艳
王萌
王敬贤
梁琼
刘云
陈波
CHEN Yuyan;WANG Meng;WANG Jingxian;LIANG Qiong;LIU Yun;CHEN Bo(Plant Science and Technology College,Beijing University of Agriculture/Beijing Collaborative Innovation Center for Eco-Environmental Improvement with Forestry and Fruit Trees,Beijing 102206,China;Forestry and Phonology Institute,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100093,China)
出处
《北京农学院学报》
2018年第4期100-103,共4页
Journal of Beijing University of Agriculture
基金
科技创新服务能力建设-科研基地建设-林果业生态环境功能提升协同创新中心(2011协同创新中心)(市级)(PXM2017_014207_000024)
北京农学院智库建设项目(ZHK201701)
北京农学院青年教师科研基金(SXQN2016103)
北京市委组织部优秀人才项目(2015000020124G055)
关键词
大气颗粒物
单位叶面积
树种
滞尘量
北京农学院
atmospheric particulate matter
unit leaf area
tree species
retention amount；Beijing University of Agriculture
