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A Nationwide Nitrogen Deposition Monitoring Network (NNDMN) containing 43 monitoring sites was established in China to measure gaseous NH, NO, and HNO and particulate NH and NO in air and/or precipitation from 2010 to 2014. Wet/bulk deposition fluxes of N 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 concentrations and dry and wet/bulk N deposition. On a national basis, the annual average concentrations (1.3–47.0 µg N m and dry plus wet/bulk deposition fluxes (2.9–83.3 kg N ha yr of inorganic N 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 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 yr 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.