Articles | Volume 18, issue 1
Research article
17 Jan 2018
Research article |  | 17 Jan 2018

Gaseous elemental mercury (GEM) fluxes over canopy of two typical subtropical forests in south China

Qian Yu, Yao Luo, Shuxiao Wang, Zhiqi Wang, Jiming Hao, and Lei Duan

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Cited articles

Bahlmann, E., Ebinghaus, R., and Ruck, W.: Development and application of a laboratory flux measurement system (LFMS) for the investigation of the kinetics of mercury emissions from soils, J. Environ. Manage., 81, 114–125,, 2006. 
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Bash, J. O. and Miller, D. R.: Growing season total gaseous mercury (TGM) flux measurements over an Acer rubrum L. stand, Atmos. Environ., 43, 5953–5961,, 2009. 
Baya, A. P. and Van Heyst, B.: Assessing the trends and effects of environmental parameters on the behaviour of mercury in the lower atmosphere over cropped land over four seasons, Atmos. Chem. Phys., 10, 8617–8628,, 2010. 
Boudala, F. S., Folkins, I., Beauchamp, S., Tordon, R., Neima, J., and Johnson, B.: Mercury flux measurements over air and water in Kejimkujik National Park, Nova Scotia, Water Air Soil Poll., 122, 183–202,, 2000. 
Short summary
This study provides high-quality direct observation data of a clean and a contaminated site in subtropical south China and quantifies the natural forest Hg emission. We find that clean and contaminated forests present a net GEM source with annual average values of 6.67 and 0.30 ng m-2 h-1, respectively; daily variations of GEM fluxes showed a source in the daytime with a peak at 13:00, and as a sink or balance at night; and higher atmospheric GEM concentration restricted the forest GEM emission.
Final-revised paper