Journal
ATMOSPHERIC CHEMISTRY AND PHYSICS
Volume 15, Issue 21, Pages 12345-12360Publisher
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/acp-15-12345-2015
Keywords
-
Funding
- Chinese National Basic Research Program [2014CB954202]
- China Funds for Distinguished Young Scholars of NSFC [40425007]
- National Natural Science Foundation of China [31121062, 41321064, 41405144]
- Biotechnology and Biological Sciences Research Council [BBS/E/C/00005196] Funding Source: researchfish
- Natural Environment Research Council [ceh010010] Funding Source: researchfish
- BBSRC [BBS/E/C/00005196] Funding Source: UKRI
Ask authors/readers for more resources
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 N-r 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-r concentrations and dry and wet/bulk N-r deposition. On a national basis, the annual average concentrations (1.3-47.0 mu g 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 N-r 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available