Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) An integrated assessment of nitrogen source, transformation and fate within an intensive dairy system to inform management change
Autor Clagnan, E.; Thornton, S.F.; Rolfe, S.A.; Wells, N.S.; Knoeller, K.; Murphy, J.; Tuohy, P.; Daly, K.; Healy, M.G.; Ezzati, G.; von Chamier, J.; Fenton, O.;
Journal / Serie PLOS ONE
Erscheinungsjahr 2019
Department CATHYD;
Band/Volume 14
Heft 7
Sprache englisch;
POF III (gesamt) T31;
Supplements https://ndownloader.figshare.com/articles/8984930/versions/1
Abstract From an environmental perspective optimised dairy systems, which follow current regulations, still have low nitrogen (N) use efficiency, high N surplus (kg N ha-1) and enable ad-hoc delivery of direct and indirect reactive N losses to water and the atmosphere. The objective of the present study was to divide an intensive dairy farm into N attenuation capacity areas based on this ad-hoc delivery. Historical and current spatial and temporal multi-level datasets (stable isotope and dissolved gas) were combined and interpreted. Results showed that the farm had four distinct attenuation areas: high N attenuation: characterised by ammonium-N (NH4+-N) below 0.23 mg NH4+-N l-1 and nitrate (NO3--N) below 5.65 mg NO3--N l-1 in surface, drainage and groundwater, located on imperfectly to moderately-well drained soils with high denitrification potential and low nitrous oxide (N2O) emissions (av. 0.0032 mg N2O-N l-1); moderate N attenuation: characterised by low NO3--N concentration in drainage water but high N2O production (0.0317 mg N2O-N l-1) and denitrification potential lower than group 1 (av. δ15N-NO3-: 16.4‰, av. δ18O-NO3-: 9.2‰), on well to moderately drained soils; low N attenuation—area 1: characterised by high NO3--N (av. 6.90 mg NO3--N l-1) in drainage water from well to moderately-well drained soils, with low denitrification potential (av. δ15N-NO3-: 9.5‰, av. δ18O-NO3-: 5.9‰) and high N2O emissions (0.0319 mg N2O l-1); and low N attenuation—area 2: characterised by high NH4+-N (av. 3.93 mg NH4+-N l-1 and high N2O emissions (av. 0.0521 mg N2O l-1) from well to imperfectly drained soil. N loads on site should be moved away from low attenuation areas and emissions to air and water should be assessed.
ID 22058
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=22058
Clagnan, E., Thornton, S.F., Rolfe, S.A., Wells, N.S., Knoeller, K., Murphy, J., Tuohy, P., Daly, K., Healy, M.G., Ezzati, G., von Chamier, J., Fenton, O. (2019):
An integrated assessment of nitrogen source, transformation and fate within an intensive dairy system to inform management change
PLOS One 14 (7), e0219479