Tissue S/N ratios and stable isotopes (delta(34)S and delta(15)N) of epilithic mosses (Haplocladium microphyllum) for showing air pollution in urban cities in Southern China.
In urban cities in Southern China, the tissue S/N ratios of epilithic mosses (Haplocladium microphyllum), varied widely from 0.11 to 0.19, are strongly related to some atmospheric chemical parameters (e.g. rainwater SO(4)(2-)/NH(4)(+) ratios, each people SO(2) emission). If tissue S/N ratios in the healthy moss species tend to maintain a constant ratio of 0.15 in unpolluted area, our study cities can be divided into two classes: class I (S/N > 0.15, S excess) and class II (S/N < 0.15, N excess), possibly indicative of stronger industrial activity and higher density of population, respectively. Mosses in all these cities obtained S and N from rainwater at a similar ratio. Sulphur and N isotope ratios in mosses are found significantly linearly correlated with local coal delta(34)S and NH(4)(+)-N wet deposition, respectively, indicating that local coal and animal NH(3) are the major atmospheric S and N sources.
Xiao
Hua-Yun
HY
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, No. 46, Guanshui Road, Guiyang 550002, China. xiaohuayun@vip.skleg.cn
Tang
Cong-Guo
CG
Xiao
Hong-Wei
HW
Wang
Yan-Li
YL
Liu
Xue-Yan
XY
Liu
Cong-Qiang
CQ
D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution; D044002:Bryophyta / Q000737:chemistry*; D002681:China; D004784:Environmental Monitoring; D009587:Nitrogen Isotopes / Q000032:analysis; D013460:Sulfur Isotopes / Q000032:analysis; D014504:Urban Health
D000393:Air Pollutants; D009587:Nitrogen Isotopes; D013460:Sulfur Isotopes