خيارات البحث
النتائج 1 - 10 من 11
Soil solution nitrogen and cations influenced by (NH4(2)SO4) deposition in a coniferous forest
1997
Carnol, M. | Ineson, P. | Dickinson, A.L. (University of Liege, Dept. Botany B22, Microbial Ecology and Radioecology, 4000 Liege (Belgium))
Anthropogenic impacts on natural nitrogen isotope variations in Pinus sylvestris stands in an industrially polluted area
1997
Jung, K. | Gebauer, G. | Gehre, M. | Hofmann, D. | Weissflog, L. | Schuurmann, G. (Department of Chemical Ecotoxicology, Centre for Environmental Research Leipzig-Halle, P.O. Box 2, D-04301 Leipzig (Germany))
Crown condition of Norway spruce in relation to sulphur and nitrogen deposition and soil properties in southeast Norway
1997
Solberg, S. | Toerseth, K. (Norwegian Forest Research Institute, Hoegskoleveien 12, N-1432 As (Norway))
Effects of elevated CO2, nitrogen supply and tropospheric ozone on spring wheat-II. Nutrients (N, P, K, S, Ca, Mg, Fe, Mn, Zn)
1997
Fangmeier, A. | Gruters, U. | Hogy, P. | Vermehren, B. | Jager, H.J. (Institut fur Pflanzenokologie, Heinrich-Buff-Ring 38, D-35392 Giessen (Germany))
Ammonia emission factors for N fertilizers applied to two contrasting grassland soils
1997
Weerden, T.J. van der | Jarvis, S.C. (Institute of Grassland and Environmental Research, North Wyke, Okehampton, Devon, EX20 2SB (United Kingdom))
The influence of air pollutants on needles and stems of Scots pine (Pinus sylvestris L.) trees
1997
Kurczynska, E.U. | Dmuchowski, W. | Wloch, W. | Bytnerowicz, A. (Department of Biophysics and Cell Biology, Silesian University, ul. Jagiellonska 28, 40-034 Katowice (Poland))
Open-top chamber and field exposure of Sitka spruce to simulated acid mist: a comparison of results
1997
Sheppard, L.J. | Leith, I.D. | Morris, E. | Cape, J.N. | Roberts, D. (Institute of Terrestrial Ecology, Bush Estate, Penicuik, Midlothian, EH26 0QB (United Kingdom))
Stem growth reduction in mature Sitka spruce trees exposed to acid mist
1997
Crossley, A. | Sheppard, L.J. | Cape, J.N. | Smith, R.I. | Harvey, F.J. (Institute of Terrestial Ecology, Bush Estate, Penicuik, Midlothian, EH26 0QB (United Kingdom))
Seasonal variability of total and easily leachable element contents in topsoils (0-5 cm) from eight catchments in the European Arctic (Finland, Norway and Russia)
1997
Niskavaara, H. | Reimann, C. | Chekushin, V. | Kashulina, G. (Geological Survey of Finland, PO Box 77, FIN-96101 Rovaniemi (Finland))
Fluxes and budgets of contaminants in the German Bight
1997
Sundermann, J. | Radach, G. (Zentrum fur Meeres-und Klimaforschung der Universitat Hamburg, Institut fur Meereskunde, 22529 Hamburg (Germany))