خيارات البحث
النتائج 1 - 10 من 12
Environmental hazards of nitrogen loading in wetland rice fields
1998
Ghosh, B.C. | Ravi Bhat (Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721 302 (India))
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))
The European critical levels for ozone: improving their usage
1999
Grunhage, L. | Jager, H.J. | Haenel, H.D. | Lopmeier, F.J. | Hanewald, K. (Institute for Plant Ecology, University of Giessen, Heinrich-Buff-Ring 38, D-35392 Giessen, Germany)
Soil nitrous oxide and nitric oxide emissions as indicators of elevated atmospheric N deposition rates in seminatural ecosystems
1998
Skiba, U. | Sheppard, L. | Pitcairn, C.E.R. | Leith, I. | Crossley, A. | Dijk, S. van | Kennedy, V.H. | Fowler, D. (Institute of Terrestrial Ecology (ITE), Bush Estate, Penicuik EH26 0QB (United Kingdom))
[How to reduce agricultural nitrogen losses?]
1993
Pedersen, C.Aa.
The role of nitrogen in crop production and losses of nitrate by leaching from agricultural soil
1994
Johnston, A.E. (IACR, Rothamsted, Harpenden (AL5 2JQ,UK))
The large-scale flux of nutrients from land to water and the eutrophication of lakes and marine waters
1994
Forsberg, C. (Institute of Limnology, Uppsala University, Norbyvag. 20, 752 36, Uppsala (Sweden))
Germany: the Baltic Sea and its agricultural environmental status
1994
Werner, W. | Wodsak, H.P. (Agrikulturchemisches Institut, Rheinischen Friedrich-Wilhelms Universitat Bonn, Mechenheinmer Allee 176, D-5300 Bonn (Germany))
Current Danish policies to abate nutrient emissions from agriculture
1994
Bonde, T.A. (Royal Veterinary and Agricultural University, Department of Ecology and Molecular Biology, Microbiology Section, DK-1958 Frederiksberg C., Copenhagen (Denmark))
Effects of crown decline on increment in Norway spruce (Picea abies (L.) Karst) in southern Sweden
1989
Bjoerkdahl, G. | Eriksson, H. (Swedish Univ. of Agricultural Sciences, Garpenberg (Sweden). Dep. of Forest Yield Research)
