Exchange fluxes of Hg between surfaces and atmosphere in the eastern flank of Mount Gongga, Sichuan province, southwestern China

CORC > 沈阳应用生态研究所 > 中国科学院沈阳应用生态研究所 > 沈阳应用生态研究所

	Exchange fluxes of Hg between surfaces and atmosphere in the eastern flank of Mount Gongga, Sichuan province, southwestern China
	Fu, XW; Feng, XB; Wang, SF; Fu, XW, Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2008
卷号	113 期号:D20 页码:-
ISSN号	0148-0227
英文摘要	In situ total gaseous mercury (TGM) concentrations and mercury exchange fluxes from 17 sampling sites of three representative landscapes (agriculture, grassland, and forest) were intensively measured in the eastern flank of Mount Gongga area, Sichuan province, southwestern China, from October 2005 to September 2006. Average TGM concentrations in ambient air ranged from 1.60 to 5.10 ng m(-3) in warm season, while the values were highly elevated in cold season with the highest mean TGM concentration of 7.65 ng m(-3). Hg fluxes from agriculture and grassland sampling sites showed clearly seasonal distribution pattern with net depositions observed in cold season and net emissions observed in warm season. Mean Hg fluxes at agriculture and grassland field fell in the range from -4.1 to 132.0 ng m(-2) h(-1) and from -18.7 to 13.4 ng m(-2) h(-1), respectively, while mean Hg fluxes from forest sites varied from 0.5 to 9.3 ng m(-2) h(-1). Notable diurnal pattern of Hg fluxes were observed from all sampling sites, with the maximum Hg fluxes observed at midday and the minimum values observed during the nighttime. TGM concentrations in cold season significantly negatively correlated with Hg flux, suggesting that highly elevated TGM concentration could inhibit Hg emission even cause significant deposition. Vegetation acted as a great sink of air Hg in cold season, while in warm season, it could significantly inhibit Hg emission from surfaces.
学科主题	Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000260393100003
资助机构	Chinese Academy of Sciences [KZCX3SW-443]; Field Station Foundation ; International Partnership Project ; Natural Science Foundation of China [40532014]
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54341]
专题	沈阳应用生态研究所_沈阳应用生态研究所
通讯作者	Fu, XW, Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China
推荐引用方式 GB/T 7714	Fu, XW,Feng, XB,Wang, SF,et al. Exchange fluxes of Hg between surfaces and atmosphere in the eastern flank of Mount Gongga, Sichuan province, southwestern China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2008,113(D20):-.
APA	Fu, XW,Feng, XB,Wang, SF,&Fu, XW, Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China.(2008).Exchange fluxes of Hg between surfaces and atmosphere in the eastern flank of Mount Gongga, Sichuan province, southwestern China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,113(D20),-.
MLA	Fu, XW,et al."Exchange fluxes of Hg between surfaces and atmosphere in the eastern flank of Mount Gongga, Sichuan province, southwestern China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 113.D20(2008):-.