Details

Autor(en) / Beteiligte

• 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.

Titel

Quantifying atmospheric nitrogen deposition through a nationwide monitoring network across China

Ist Teil von

• Atmospheric chemistry and physics, 2015-11, Vol.15 (21), p.12345-12360

Ort / Verlag

Katlenburg-Lindau: Copernicus GmbH

Erscheinungsjahr

2015

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• A Nationwide Nitrogen Deposition Monitoring Network (NNDMN) containing 43 monitoring sites was established in China to measure gaseous NH3, NO2, and HNO3 and particulate NH4+ and NO3− in air and/or precipitation from 2010 to 2014. Wet/bulk deposition fluxes of Nr 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 Nr concentrations and dry and wet/bulk Nr deposition. On a national basis, the annual average concentrations (1.3–47.0 μg N m−3) and dry plus wet/bulk deposition fluxes (2.9–83.3 kg N ha−1 yr−1) of inorganic Nr 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 Nr 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−1 yr−1 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.