Quantifying atmospheric nitrogen deposition through a nationwide monitoring network across China
Item
Title (Dublin Core)
Quantifying atmospheric nitrogen deposition through a nationwide monitoring network across China
Description (Dublin Core)
A Nationwide Nitrogen Deposition Monitoring Network (NNDMN) containing 43 monitoring sites was established in China to measure gaseous NH<sub>3</sub>, NO<sub>2</sub>, and HNO<sub>3</sub> and particulate NH<sub>4</sub><sup>+</sup> and NO<sub>3</sub><sup>−</sup> in air and/or precipitation from 2010 to 2014. Wet/bulk deposition fluxes of N<sub>r</sub> species were collected by precipitation gauge method and measured by continuous-flow analyzer; dry deposition fluxes were estimated using airborne concentration measurements and inferential models. Our observations reveal large spatial variations of atmospheric N<sub>r</sub> concentrations and dry and wet/bulk N<sub>r</sub> deposition. On a national basis, the annual average concentrations (1.3–47.0 μg N m<sup>−3</sup>) and dry plus wet/bulk deposition fluxes (2.9–83.3 kg N ha<sup>−1</sup> yr<sup>−1</sup>) of inorganic N<sub>r</sub> species are ranked by land use as urban > rural > background sites and by regions as north China > southeast China > southwest China > northeast China > northwest China > Tibetan Plateau, reflecting the impact of anthropogenic N<sub>r</sub> emission. Average dry and wet/bulk N deposition fluxes were 20.6 ± 11.2 (mean ± standard deviation) and 19.3 ± 9.2 kg N ha<sup>−1</sup> yr<sup>−1</sup> across China, with reduced N deposition dominating both dry and wet/bulk deposition. Our results suggest atmospheric dry N deposition is equally important to wet/bulk N deposition at the national scale. Therefore, both deposition forms should be included when considering the impacts of N deposition on environment and ecosystem health.
Creator (Dublin Core)
Xu, W.
Luo, X. S.
Pan, Y. P.
Zhang, L.
Tang, A. H.
Shen, J. L.
Zhang, Y.
Li, K. H.
Wu, Q. H.
Yang, D. W.
Zhang, Y. Y.
Xue, J.
Li, W. Q.
Li, Q. Q.
Tang, L.
Lu, S. H.
Liang, T.
Tong, Y. A.
Liu, P.
Zhang, Q.
Xiong, Z. Q.
Shi, X. J.
Wu, L. H.
Shi, W. Q.
Tian, K.
Zhong, X. H.
Shi, K.
Tang, Q. Y.
Zhang, L. J.
Huang, J. L.
He, C. E.
Kuang, F. H.
Zhu, B.
Liu, H.
Jin, X.
Xin, Y. J.
Shi, X. K.
Du, E. Z.
Dore, A. J.
Tang, S.
Collett, J. L.
Goulding, K.
Sun, Y. X.
Ren, J.
Zhang, F. S.
Liu, X. J.
Date (Dublin Core)
2018-09-10
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-15-12345-2015
https://acp.copernicus.org/articles/15/12345/2015/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
