文献类型： 外文期刊
作者： Zhang, Y. 1 ; Song, L. 1 ; Liu, X. J. 1 ; Li, W. Q. 2 ; Lu, S. H. 3 ; Zheng, L. X. 1 ; Bai, Z. C. 1 ; Cai, G. Y. 1 ; Zhang, F. S. 1 ;
作者机构： 1.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China
2.Fujian Inst Tobacco Agr Sci, Fuzhou 350003, Peoples R China
3.Sichuan Acad Agr Sci, Inst Soil & Fertilizer, Chengdu 610066, Peoples R China
关键词： Atmospheric deposition; DON; DON/TDN; Rainfall; Seasonal variation
期刊名称：ATMOSPHERIC ENVIRONMENT （ 影响因子：4.798； 五年影响因子：5.295 ）
ISSN： 1352-2310
年卷期： 2012 年 46 卷
页码：
收录情况： SCI
摘要： Precipitation samples have been collected and analyzed for organic and inorganic nitrogen (N) at 32 sites in China from 2005 to 2009. Our results suggest that dissolved organic nitrogen (DON) accounts for 28% of the total atmosphere bulk N deposition. Average annual DON deposition was 6.84 kg N ha(-1) yr(-1), ranging from 1.01 to 19.7 kg N ha(-1) yr(-1). The volume weighted average DON concentration was 77 mu mol L-1, ranging from 13 to 190 mu mol L-1, which was much higher than results obtained in other regions of the world. Analysis of seasonal variations of DON concentration, deposition, the ratio of DON to total dissolved N (TDN), rainfall and wind frequency roses revealed possible pollution sources in specific regions, e.g. agriculture, oceanic spray and re-suspension. Significant correlations of DON with TDN from results in this study and elsewhere indicate that atmospheric organic N species have similar anthropogenic pollution sources to atmospheric inorganic N species, and that DON deposition is an important part of the TON deposition. (C) 2011 Elsevier Ltd. All rights reserved.
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