文献类型：期刊文献

英文题名：Effect of the wetland environment on particulate matter and dry deposition

作者：Yang, Tingyu[1] Wang, Yu[1] Wu, Yanan[1] Zhai, Jiexiu[1] Cong, Ling[1] Yan, Guoxin[1] Zhang, Zhenming[1] Li, Chunyi[2]

第一作者：Yang, Tingyu

通信作者：Zhang, ZM[1];Li, CY[2]

机构：[1]Beijing Forestry Univ, Coll Nat Conservat, Beijing 100083, Peoples R China;[2]Chinese Acad Forestry, Inst Wetland Res, Beijing, Peoples R China

年份：2020

卷号：41

期号：8

起止页码：1054-1064

外文期刊名：ENVIRONMENTAL TECHNOLOGY

收录：;EI(收录号：20203209033131);Scopus(收录号：2-s2.0-85053478880);WOS:【SCI-EXPANDED(收录号:WOS:000517366600011)】；

基金：This research was supported by the Natural Science Foundation of China [41877535], the Fundamental Research Funds for the Central Universities [2016JX05] and the National Key R&D Program of China [2017YFC0505903].

语种：英文

外文关键词：Particulate matter; wetland; dry deposition; spatio-temporal variation; meteorological factors

摘要：In Beijing, particulate matter (PM) in the atmosphere, especially PM2.5 and PM10, have attracted public attention because of its adverse effects. A series of studies have investigated the sources and spatial-temporal variation of PM. Wetland has been reported to own the capacity of resolving air problem. To examine the characteristics of the particulate matter in wetlands, the diurnal variation of PM2.5 and PM10 concentrations with respect to two heights (i.e. 1.5 and 10 m, respectively) and three meteorological factors (i.e. wind speed, temperature, and relative humidity, respectively) was monitored in the Cuihu National Wetland Park in Beijing, and the dry deposition velocity and flux were analysed using the above-mentioned data. Results indicated that (1) As for diurnal variation, the PM concentration constantly decreased at 07:00-16:00 and gradually increased at 16:00-18:00. The maximum instantaneous concentration was observed at 07:00-10:00, while the minimum instantaneous concentration was observed at 13:00-16:00. (2) The annual concentration variation of PM followed the order of dry period > wet period > normal period. (3) The particulate concentrations at 10 m were always greater than those at 1.5 m. (4) The PM concentration was positively correlated to the relative humidity and negatively correlated to the temperature. Wind speed exhibited a complex effect on PM concentration. (5) The regulation of dry deposition efficiency followed the order of spring > winter > summer. (6) Wind speed strongly and positively affected the dry deposition velocity of PM10. The effects of temperature and relative humidity on dry deposition were uncertain.