文献类型：期刊文献

英文题名：The Concentrations and Removal Effects of PM10 and PM2.5 on a Wetland in Beijing

作者：Li, Chunyi[1,2] Huang, Yilan[1,2] Guo, Huanhuan[3] Wu, Gaojie[1,2] Wang, Yifei[1,2] Li, Wei[1,2] Cui, Lijuan[1,2]

第一作者：Li, Chunyi;李春义

通信作者：Cui, LJ[1];Cui, LJ[2]

机构：[1]Chinese Acad Forestry, Beijing Key Lab Wetland Serv & Restorat, Inst Wetland Res, Beijing 100091, Peoples R China;[2]Beijing Hanshiqiao Natl Wetland Ecosyst Res Stn, Beijing 101399, Peoples R China;[3]Beijing Forestry Univ, Coll Forestry, Beijing 100083, Peoples R China

年份：2019

卷号：11

期号：5

外文期刊名：SUSTAINABILITY

收录：;WOS:【SSCI(收录号:WOS:000462661000096)，SCI-EXPANDED(收录号:WOS:000462661000096)】；

基金：This research was supported by the Fundamental Research Funds for the Central Non-Profit Research Institution of Chinese Academy of Forestry (CAFINT2015C12) and (CAFYBB2014QA030).

语种：英文

外文关键词：particulates; wetland; concentration; meteorological factors; dry removal efficiency

摘要：Particulate matter (PM) is an essential source of atmospheric pollution in metropolitan areas since it has adverse effects on human health. However, previous research suggested wetlands can remove particulate matter from the atmosphere to land surfaces. This study was conducted in the Hanshigiao Wetland National Nature Reserve in Beijing during 2016. The concentrations of PM10 and PM2.5 on a wetland and bare land in the park, as well as metrological data, were collected during the whole year. Based on the observed data, removal efficiency of each land use type was calculated by empirical models and the relationships between concentrations and metrological factors were also analyzed. The results indicated that: (1) In general, the PM10 and PM2.5 concentrations on the bare land surface were higher than those on the wetland surface, in both of which the highest value appeared at night and evening, while the lowest value appeared near noon. In terms of season, the average concentration of PM10 was higher in winter (wetland: 137.48 mu g.m(-3); bare land: 164.75 mu g.m(-3)) and spring (wetland: 205.18 mu g.m(-3); bare land: 244.85 mu g.m(-3)) in general. The concentration of PM2.5 on the wetland surface showed the same pattern, while that on the bare land surface was higher in spring and summer. (2) Concentrations of PM10 and PM2.5 were significantly correlated with the relative humidity (p < 0.01) and inversely correlated with wind speed (p < 0.05). The relationship between PM10 and PM2.5 concentrations and temperature was more complicated-it showed a significantly negative correlation (p < 0.01) between them in winter and spring, however, the correlation was insignificant in autumn. In summer, only the correlation between PM10 concentration and temperature on the wetland surface was significant (p < 0.01). (3) The dry removal efficiency of PM10 was greater than that of PM2.5. The dry removal efficiencies of PM10 and PM2.5 followed the order of spring > winter > autumn > summer on the wetland. This study seeks to provide practical measures to improve air quality and facilitate sustainable development in Beijing.