The Effect of Future Climate Perturbations on N2O Emissions from a Fertilized Humid Grassland
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N2O emissions from a fertilized humid grassland near Cork, Ireland were continuously measured during 2003 using an eddy covariance system. For most of the year emissions were close to zero and 60% of the emissions occurred in eight major events of 2–20 days’ duration. Two hundred and seven kg ha−1 of synthetic N and 130 kg ha−1 organic N were applied over the year and the total measured annual N2O emission was 11.6 kg N ha−1. The flux data were used to test the prediction of N2O emissions by the DNDC (DeNitrification – DeComposition) model. The model predicted total emissions of 15.4 kg N ha−1, 32 % more than the observed emissions. On this basis the model was further used to simulate (a) background (non-anthropogenic) N2O emissions and (b) the effect on N2O emissions of future climate perturbations based on the Hadley Center model output of the IS92a scenario for Ireland. DNDC predicts 1.7 kg N ha−1 year−1 of background N2O emissions, accounting for 15% of the observed emissions. Climate shifts will increase total annual modeled N2O emissions from 15.4 kg N ha−1 to 22.4 kg N ha−1 if current levels of N applications are maintained, or to 21.2 kg N ha−1 if synthetic N applications are reduced to 170 kg N ha−1 to comply with recent EU water quality legislation. Thus the projected increase in N2O emissions due to climate change is far larger than the decrease expected from reduced fertilizer applications.
- Bouwman, A.F., van der Hoek, K.W., Olivier, J.G.J. (1995) Uncertainties in the global source distribution of nitrous oxide. J. Geophys. Res. 100: pp. 2785-2800 CrossRef
- Council Directive 91/676/EEC concerning the protection of waters against pollution caused by nitrates from agricultural sources. Council Directive. Council of the European Communities, Brussels, Belgium
- Dobbie, K.E., McTaggart, I.P., Smith, K.A. (1999) Nitrous oxide emissions from intensive agricultural systems: variations between crops and seasons, key driving variables, and mean emission factors. J. Geophys. Res. 104: pp. 26891-26899 CrossRef
- Gordon, C., Cooper, C., Senior, C.A., Banks, H.T., Gregory, J.M., Johns, T.C., Mitchell, J.F.B., Wood, R.A. (2000) Simulation of SST, sea ice extents and ocean heat transports in a version of the Hadley Centeer coupled model without flux adjustments. Clim. Dynam. 16: pp. 147-168
- Holden, N.M., Brereton, A.J. (2002) An assessment of the potential impact of climate change on grass yield in Ireland over the next 100 years. Irish J. Ag. Food Res. 41: pp. 213-226
- Hsieh C.-I., Kiely G., Birkby A. and Katul G. 2005. Photosynthetic responses of a humid grassland ecosystem to future climate perturbations. Adv. Wat. Res. doi: 10.1016/j.advwatres.2005.02.007 (in press).
- Climate change 2001: The scientific basis. Report. Cambridge University Press, New York, NY, USA
- Jordan, C. (1997) Mapping of Rainfall Chemistry In Ireland 1972–1994. Biol. Env.: Proc. Royal Irish Acad. 97B: pp. 53-73
- Leahy P., Kiely G. and Scanlon T.M. 2004. Managed grasslands: a greenhouse gas sink or source? Geophys. Res. Lett. 31(L20507). doi:10.1029/2004GL021161. vol. 31, art. L20507.
- Leggett, J., Pepper, W.J., Swart, R.J. Emissions scenarios for the IPCC: an update. In: Houghton, J.T., Callander, B.A., Varney, S.K. eds. (1992) Climate Change 1992: The Supplementary Report to the IPCC Scientific Assessment. Cambridge University Press, CambridgeUK, pp. 69-95
- Li, C.S. (2000) Modeling trace gas emissions from agricultural ecosystems. Nutr. Cycl. Agroecosyst. 58: pp. 259-276 CrossRef
- Li, C.S., Frolking, S., Frolking, T.A. (1992a) A model of nitrous oxide evolution from soil driven by rainfall events: 1. Model structure and sensitivity. J. Geophys. Res. 97: pp. 9759-9776
- Li, C.S., Frolking, S., Frolking, T.A. (1992b) A model of nitrous oxide evolution from soil driven by rainfall events: 2. Model applications. J. Geophys. Res. 97: pp. 9777-9783
- Maag M. and Vinther F.P. 1996. Nitrons oxide emission by nitrification and denitrification in different soil types and at different soil moisture contents and temperatures. Appl. Soil Ecol. 4: 5–14.
- Pope, V.D., Gallani, M.L., Rowntree, P.R., Stratton, R.A. (2000) The impact of new physical parameterizations in the Hadley Centre climate model – HadAM3. Clim. Dynam. 16: pp. 123-146
- Prather, M.J. (1998) Time scales in atmospheric chemistry: coupled perturbations to N2O, NOyand O3. Science 279: pp. 1339-1341 CrossRef
- Prinn, R.G., Weiss, R.F., Fraser, P.J., Simmonds, P.G., Cunnold, D.M., Alyea, F.N., O’Doherty, S., Salameh, P., Miller, B.R., Huang, J., Wang, R.H.J., Hartley, D.E., Harth, C., Steele, L.P., Sturrock, G., Midgley, P.M., McCulloch, A. (2000) A history of chemically and radiatively important gases in air deduced from ALE/GAGE/AGAGE. J. Geophys. Res. 105: pp. 17751-17792 CrossRef
- Scanlon, T., Kiely, G. (2003) Ecosystem-scale measurements of nitrous oxide fluxes for an intensely grazedfertilized grassland. Geophys. Res. Lett. 30: pp. 1852-1856 CrossRef
- Smith, K.A., Ball, T., Conen, F., Dobbie, K.E., Massheder, J., Rey, A. (2003) Exchange of greenhouse gases between soil and atmosphere: interactions of soil physical factors and biological processes. Eur. J. Soil Sci. 54: pp. 779-791
- UNFCCC. 2004. UNFCCC Greenhouse Gases Inventory Data Base, United Nations Framework Convention on Climate Change. Web Page. http://ghg.unfccc.int/.
- Whitehead, D.C. (1995) Grassland Nitrogen. 1st edn. CAB International, Wallingford, Oxon, UK
- The Effect of Future Climate Perturbations on N2O Emissions from a Fertilized Humid Grassland
Nutrient Cycling in Agroecosystems
Volume 73, Issue 1 , pp 15-23
- Cover Date
- Print ISSN
- Online ISSN
- Kluwer Academic Publishers
- Additional Links
- Climate change
- DNDC model
- Emission factor
- Nitrogen fertilizer
- Nitrous oxide
- Author Affiliations
- 1. Department of Bioenvironmental Systems Engineering, National Taiwan University, 10673, Taipei, Taiwan
- 2. Department of Civil and Environmental Engineering, University College Cork, Cork, Ireland
- 3. Complex Systems Research Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, 03824, Durham, NH, USA