Dry deposition of particulate matter at an urban forest, wetland and lake surface in Beijing. (January 2016)

• Record Type: Journal Article
• Authors: Liu, Jiakai; Zhu, Lijuan; Wang, Huihui; Yang, Yilian; Liu, Jiatong; Qiu, Dongdong; Ma, Wu; Zhang, Zhenming; Liu, Jinglan
• Is Part Of: Atmospheric environment. Volume 125:Part A(2016)
• Page Start: 178
• Page End: 187
• Publication Date: 2016-01
• Subjects: PM pollution -- Dry deposition -- Vegetation collection -- Land use types -- Seasons; Air -- Pollution -- Periodicals; Air -- Pollution -- Meteorological aspects -- Periodicals; 551.51
• DOI: 10.1016/j.atmosenv.2015.11.023
• Languages: English
• ISSNs: 1352-2310

Abstract

Abstract: The dry deposition of particular matters from atmosphere to ecosystems is an undesirable consequence of this pollution while the deposition process is also influenced by different land use types. In current study, concentration of fine particles, coarse particles and meteorological data were collected during the daytime in an artificial forest, wetland and a water surface in the Beijing Olympic Park. Dry deposition velocity, fluxes and vegetation collection were calculated by different models and the results were compared. The results show: (1) the deposition velocity onto the forest canopy was higher than which onto the wetland and the water surface and the velocity varied in different seasons; (2) the fine particles deposited most in the winter while the coarse particles was in the spring; (3) the vegetation collection rates of fine particles were lower than coarse particles, and the forest collected more PMs than the wetland plants. Highlights: Dry deposition and vegetation collections are used to represent the PM removal. Forests are more efficient than wetlands and lakes in PM pollution removal. Fine particles deposited most in winter while the coarse particles were in spring. The PM removal due to vegetation was lower than 1%.