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结果 1-10 的 13
The global nitrogen cycle: changes and consequences
1998
Galloway, J.N. (Department of Environmental Sciences, University of Virginia, Charlottesville, VA 22903 (USA))
Mixed farming systems as a way towards a more efficient use of nitrogen in European Union agriculture
1998
Oomen, G.J.M. | Lantinga, E.A. | Goewie, E.A. | Hoek, K.W. van der (Department of Plant and Crop Sciences, Group of Biological Farming Systems, Wageningen Agricultural University, Haarweg 333, 6709 RZ Wageningen (Netherlands))
Comparison of N and C dynamics in two Norway spruce stands using a process oriented simulation model
1998
Eckersten, H. | Beier, C. (Swedish University of Agricultural Sciences, P.O. Box 7043, S-75007 Uppsala (Sweden))
Modelling the effects of nitrogen addition on soil nitrogen status and nitrogen uptake in a Norway spruce stand in Denmark
1998
Beier, C. | Eckersten, H. (RISO National Laboratory, P.O. Box 49, DK-4000 Roskilde (Denmark))
Impacts and fate of experimentally enhanced nitrogen deposition on a British lowland heath
1998
Power, S.A. | Ashmore, M.R. | Cousins, D.A. (Imperial College of Science, Technology and Medicine, Silwood Park, Ascot, Berkshire SL5 7PY (United Kingdom))
Nitrogen saturation experiments (NITREX) in coniferous forest ecosystems in Europe: a summary of results
1998
Tietema, A. | Boxman, A.W. | Bredemeier, M. | Emmett, B.A. | Moldan, F. | Gundersen, P. | Schleppi, P. | Wright, R.F. (University of Amsterdam, Netherlands Centre for Geo-Ecological Research, Nieuwe Prinsengracht 130, NL1018 VZ Amsterdam (Netherlands))
Optimizing air quality management in Europe and North America: justification for integrated management of both oxidized and reduced forms of nitrogen
1998
Cowling, E.B. | Erisman, J.W. | Smeulders, S.M. | Holman, S.C. | Nicholson, B.M. (College of Forest Resources, North Carolina State University, Box 8002, Raleigh, NC 27695 (USA))
N-fluxes and efficiencies on farms in Styria, Austria
1998
Kuderna, M. | Blum, W.E.H. (Institute of Soil Science, University of Agricultural Sciences, Vienna (Austria))
Turnover of carbon and nitrogen in coniferous forest soils of different N-status and under different 15NH4-N application rate
1998
Sjoberg, R.M. | Persson, T. (Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences, P.O. Box 7072, S-750 07 Uppsala (Sweden))
Making the link between science and policy: controlling N losses from agriculture in Canada
1998
Kimpe, C.R. de | MacDonald, K.B. (Agriculture and Agri-Food Canada, Sir John Carling Building, Ottawa, Ontario, K1A 0C5 (Canada))
