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Resultados 1-10 de 13

The global nitrogen cycle: changes and consequences

1998

Galloway, J.N. (Department of Environmental Sciences, University of Virginia, Charlottesville, VA 22903 (USA))

nitrogen suelo leguminosas ecosystems vegetation riz nitrogeno denitrificacion region marine ecosysteme fijacion del nitrogeno vegetacion ...
Department for Environment, Food and Rural Affairs - United Kingdom
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))

farms nitrogen hortalizas suelo explotaciones agrarias organic fertilizers union europeenne sistemas de explotacion nitrogeno systeme d'exploitation agricole polyculture elevage production vegetale ...
Department for Environment, Food and Rural Affairs - United Kingdom
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))

sweden nitrogen nutrient uptake leaching mineral nutrients suelo arenoso absorcion de sustancias nutritivas nitrogeno modele de simulation arboles forestales caracteristicas del rodal substance nutritive minerale ...
Department for Environment, Food and Rural Affairs - United Kingdom
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))

nitrogen cycling leaching mineralization simulation models soil types nitrogeno engrais azote modele de simulation cycle biogeochimique mineralizacion lixiviacion ...
Department for Environment, Food and Rural Affairs - United Kingdom
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))

hojarasca nitrogen leaching litter for animals field experimentation poaceae nitrogeno denitrificacion litiere vegetale experimentacion en campo experimentation au champ paramos ...
Department for Environment, Food and Rural Affairs - 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))

nitrogen leaching lessivage du sol coniferous forests research projects azote nitrogeno pollution atmospherique foret resineuse polucion del aire lixiviacion bosque de coniferas ...
Department for Environment, Food and Rural Affairs - United Kingdom
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))

nitrogen soil pollution climate pollution de l'eau ciencias forestales aire nitrogeno polucion del agua qualite pollution atmospherique productos quimicos control de la contaminacion ...
Department for Environment, Food and Rural Affairs - United Kingdom
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))

ammoniac farms maize nitrogen leaching explotaciones agrarias lisimetros nitrogeno betail amoniaco estiercol fluido lysimetre ...
Department for Environment, Food and Rural Affairs - United Kingdom
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))

nitrogen cycling mor soil organic matter soil types suelo forestal nitrificacion nitrogeno engrais azote cycle biogeochimique foret resineuse materia organica del suelo ...
Department for Environment, Food and Rural Affairs - United Kingdom
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))

nitrogen organic fertilizers ecosystems nutrientes policies livestock nitrogeno betail ecosysteme politicas perdidas desde suelos perte des les sols ...
Department for Environment, Food and Rural Affairs - United Kingdom