Atmospheric organic nitrogen deposition: Analysis of nationwide data and a case study in Northeast China

被引：26

作者：

Jiang, C. M. ^{[1
]}

Yu, W. T. ^{[1
]}

Ma, Q. ^{[1
]}

Xu, Y. G. ^{[1
]}

Zou, H. ^{[1
]}

Zhang, S. C. ^{[2
]}

Sheng, W. P. ^{[3
]}

机构：

[1] Chinese Acad Sci, Lab Nutr Recycling, Inst Appl Ecol, Shenyang 110016, Peoples R China

[2] Chinese Acad Sci, Northeast Inst Geog & Agr Ecol, Changchun 130012, Peoples R China

[3] Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Chinese Ecosyst Res Network, Synth Res Ctr,Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China

来源：

ENVIRONMENTAL POLLUTION | 2013年 / 182卷

基金：

中国国家自然科学基金;

关键词：

DON deposition; Precipitation; Ecological significance; Lower Liaohe River Plain; Northeast China; WET DEPOSITION; PRECIPITATION; CYCLE; PRODUCTIVITY; PHOSPHORUS; CHEMISTRY; GUANGZHOU; AMMONIUM; NITRATE; CARBON;

D O I：

10.1016/j.envpol.2013.08.003

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The origin of atmospheric dissolved organic nitrogen (DON) deposition is not very clear at present. Across China, the DON deposition was substantially larger than that of world and Europe, and we found significant positive correlation between contribution of DON and the deposition flux with pristine site data lying in outlier, possibly reflecting the acute air quality problems in China. For a case study in Northeast China, we revealed the deposited DON was mainly derived from intensive agricultural activities rather than the natural sources by analyzing the compiled dataset across China and correlating DON flux with NH4+-N and NO3--N. Crop pollens and combustion of fossil fuels for heating probably contributed to summer and autumn DON flux respectively. Overall, in Northeast China, DON deposition could exert important roles in agro-ecosystem nutrient management and carbon sequestration of natural ecosystems; nationally, it was suggested to found rational network for monitoring DON deposition. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.

引用

页码：430 / 436

页数：7

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