Reactive nitrogen species and nitrogen deposition in the North China Plain
- Publikations-Art
- Kongressbeitrag
- Autoren
- Kopsch, J., Liu, X., Zhang, Y., He, C.-E., Shen, J., Franzaring, J., Fangmeier, A., Zhang, F.
- Erscheinungsjahr
- 2006
- Veröffentlicht in
- Proceedings Workshop on Agricultural Air Quality
- Herausgeber
- V.P. Aneja, W.H. Schlesinger, R. Knighton, G. Jennings, D. Niyogi, W. Gilliam, C.S. Duke
- Seite (von - bis)
- 97-100
- Tagungsname
- Workshop on Agricultural Air Quality
- Tagungsort
- Wahsington D.C.
- Tagungsdatum
- 06.06.2006
The North China Plain (NCP) is called the granary of China since it provides more than 30% of China’s total wheat and corn production. Winter wheat – summer maize crop rotation systems with nitrogen applications of up to 600 kg N ha-1 yr-1 are most common. The nitrogen efficiency of these crop rotations is often below 30% and considerable amounts of nitrogen are lost both by leaching and by emission of gaseous nitrogen species. These emissions from crop rotations, together with emissions from animal husbandry and with growing emissions of oxidised nitrogen species from traffic exhaust, are expected to generate high atmospheric concentrations of reactive nitrogen species and high amounts of nitrogen deposition. A monitoring network for wet and dry deposition of nitrogen was established at several locations in 2003. Here we present recent data on atmospheric concentrations and deposition of reactive nitrogen species in the NCP and report on approaches involving plants for the biomonitoring of N deposition