Articles | Volume 13, issue 7
https://doi.org/10.5194/bg-13-2029-2016
https://doi.org/10.5194/bg-13-2029-2016
Research article
 | 
07 Apr 2016
Research article |  | 07 Apr 2016

Seasonal variations in metallic mercury (Hg0) vapor exchange over biannual wheat–corn rotation cropland in the North China Plain

Jonas Sommar, Wei Zhu, Lihai Shang, Che-Jen Lin, and Xinbin Feng

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Cited articles

AMAP/UNEP: Technical Background Report for the Global Mercury Assessment 2013, Arctic Monitoring and Assessment Programme, Oslo, Norway/UNEP Chemicals Branch, Geneva, Switzerland, VI, 263 pp., 2013.
Bahlmann, E., Ebinghaus, R., and Ruck, W.: The effect of soil moisture on the emission of mercury from soils, Materials and Geoenvironment, 51, 791–794, 2004.
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.
Bao, X. Y., Wen, X. F., Sun, X. M., Zhao, F. H., and Wang, Y. Y.: Interannual variation in carbon sequestration depends mainly on the carbon uptake period in two croplands on the North China Plain, PLoS ONE, 9, e110021, https://doi.org/10.1371/journal.pone.0110021, 2014.
Bash, J. O. and Miller, D. R.: A note on elevated total gaseous mercury concentrations downwind from an agriculture field during tilling, Sci. Total Environ., 388, 379–388, 2007.
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Short summary
A micrometeorological method (REA) has been implemented to assess the role of cereal crop fields in the North China Plain as a source or sink of elemental mercury vapor (Hg0) during the course of a full year. In combination with chamber measurements under the canopy, the above-canopy REA measurements provided evidence for a balance between Hg0 ground emissions and uptake of Hg0 by the crop foliage, with net emissions prevailing from the ecosystem during the majority of a year.
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