生态环境学报2016，Vol.25Issue(12)：1967-1973,7.DOI:10.16258/j.cnki.1674-5906.2016.12.011
北京7种湿地植物的颗粒物附着能力研究
Particulate Matter Adsorption Capacity of 7 Species of Wetland Plants in Beijing
摘要
Abstract
Wetland plant adsorption is effective in reducing the concentration of air particulate matter. This study investigated the capturing capability of air particulate matter (PM) of 7 species of wetland plant (Phragmites australis, Typha orientalis, Scirpus validus, Iris tectorum, Zizania latifolia, Eichhornia crassipes, Sagittaria sagittifolia) in Beijing Hanshiqiao wetland park. The grain size of plant surface particles was determined by water-washing measurement method. The micromorphological structures of plant surface were observed using a scanning electron microscope in high vacuum mode. The relationships between the dust-capturing capability and the micromorphological characteristics of plant surface were compared among the 7 species. The results showed that the PMs absorbed by plant surface varied among different species. The E. crassipes and S. sagittifolia had the strongest capability of capturing PM, PM10 and PM2.5, PM10~100, PM2.5~10 and PM2.5 accounted for 64.2%~87.1%, 8.6%~29.5% and 1.06%~3.92% of PM respectively. The stoma width of wetland plants might play a main role in capturing the PMs, as the stoma width was positively related to the absorbed PM, PM10 and PM2.5 (P<0.05). The PM2.5 capturing capability might be improved with the roughness and structural complexity of the surface of leaf and stem. This study provide scientific evidence for wetland designing and plant configuration, as well as for making policies of PM2.5 pollution control.关键词
湿地植物/颗粒物/PM2.5/PM10/吸附能力Key words
wetland plant/air particulate matter/PM2.5/PM10/adsorption capacity分类
资源环境引用本文复制引用
李春义,崔丽娟,张骁栋,朱怡诺,李伟,雷茵茹,康晓明..北京7种湿地植物的颗粒物附着能力研究[J].生态环境学报,2016,25(12):1967-1973,7.基金项目
中央级公益性科研院所基本科研业务费专项项目(CAFINT2015C12) （CAFINT2015C12）
