Observation of the nitrogen deposition in the lower Liaohe River Plain, Northeast China and assessing its ecological risk

doi:10.1016/j.atmosres.2011.04.011

	Observation of the nitrogen deposition in the lower Liaohe River Plain, Northeast China and assessing its ecological risk
	Yu, W. T.1; Jiang, C. M.1; Ma, Q.1; Xu, Y. G.1; Zou, H.1; Zhang, S. C.2
刊名	ATMOSPHERIC RESEARCH
	2011-07-01
卷号	101 期号:1-2 页码:460-468
关键词	n Deposition Nh(4)(+)/no(3)(-) Ratio Precipitation Agroecosystems Ecological Disturbance Critical Loads Lower Liaohe River Plain Northeast China
ISSN号	0169-8095
DOI	10.1016/j.atmosres.2011.04.011
英文摘要	Little information about the nitrogen (N) deposition in the lower Liaohe River Plain (LRP) of Northeast China was available. A continuous 5-year observation (from 2004 to 2008) was conducted to determine the nitrogen deposition in precipitation collected by a standard rain gage, and then we assessed its ecological consequences. The mean inorganic nitrogen concentrations were 1.82 mg N L(-1) for NH(4)(+)-N and 0.89 mg N L(-1) for NO(3)(-)-N. On an annual basis, the averaged amounts of N deposition were 14.5 kg N ha(-1) year(-1), which were much lower than that of hotspots in China. However, the amount of deposited N should still be taken account into the N fertilizer management of the agroecosystems. Compared with the critical loads (CL) of N deposition, the deposited N would likely threaten the natural ecosystems in LRP. The N concentrations in rainwater and the amount of N deposition showed a clear seasonal pattern, and precipitation played an important role in regulating the N concentration. Furthermore, the seasonal fluctuation of NH(4)(+)/NO(3)(-) ratio reflected that the deposited N originated from both fertilizer application and fossil fuel combustion, and environmental factor (soil temperature, lightning and sunshine) might also contribute to the seasonal cycles of NH(4)(+)/NO(3)(-) ratio. The high annual NH(4)(+)/NO(3)(-) ratio (2.05) compared with the more developed region suggested that N deposition in this region was mostly affected by agricultural activities rather than industrial activities. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000292620500037
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/121711]
专题	中国科学院沈阳应用生态研究所
通讯作者	Jiang, C. M.
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, Lab Nutrients Recycling, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, NE Inst Geog & Agr Ecol, Changchun 130012, Peoples R China
推荐引用方式 GB/T 7714	Yu, W. T.,Jiang, C. M.,Ma, Q.,et al. Observation of the nitrogen deposition in the lower Liaohe River Plain, Northeast China and assessing its ecological risk[J]. ATMOSPHERIC RESEARCH,2011,101(1-2):460-468.
APA	Yu, W. T.,Jiang, C. M.,Ma, Q.,Xu, Y. G.,Zou, H.,&Zhang, S. C..(2011).Observation of the nitrogen deposition in the lower Liaohe River Plain, Northeast China and assessing its ecological risk.ATMOSPHERIC RESEARCH,101(1-2),460-468.
MLA	Yu, W. T.,et al."Observation of the nitrogen deposition in the lower Liaohe River Plain, Northeast China and assessing its ecological risk".ATMOSPHERIC RESEARCH 101.1-2(2011):460-468.