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结果 11-20 的 23
Nitrogen mineralization in forest humus polluted with copper or zinc
1999
NikliZska, M. (Krakow Univ. (Poland)) | Bottner, P. | Couteaux, M.-M.
Some effects of N on ectomycorrhizal diversity of Scots pine (Pinus sylvestris L.) in Northeastern Germany
1999
Woellecke, J. (BTU Cottbus (Germany)) | Muenzenberger, B. | Huettl, R.F.
Soil accumulation of nitrogen in some Norwegian terrestrial ecosystems
1999
Stuanes, A.O. | Sogn, T.A. | Strand, L.T. | Abrahamsen, G. (NLH, Aas (Norway))
Foliar Ca, Mg, Al, N and delta15N as indicators of ecological damage in a spruce-fir stand subjected to chronic N additions
1999
Pardo, L.H. | Schaberg, P.G. (USDA Forest Service, Burlington, VT (USA)) | McNulty, S.G. | Aber, J.D.
Critical loads for sulphur and nitrogen and their exceedences in Lithuanian forest ecosystems
1999
Sopauskiene, D. | Juozaitis, A. (Vilnius Univ. (Lithuania))
Indicators for nitrogen critical loads in ombrotrophic bogs
1999
Thomassen, H.B.M. | Lamers, L.P.M. | Roelofs, J.G.M.
Heathland ecosystem responses to nitrogen deposition and key processes involved
1999
Riis-Nielsen, T.
Mapping critical loads of S and N for forests in Eastern Canada and the northeastern U.S.
1999
Ouimet, R. | Pardo, L.
Effects of atmospheric nitrogen deposition on semi-natural ecosystems
1999
Lee, J.A. (Sheffield Univ. (UK))
Fluxes of NO3-, NH4+, NO, NO2, HNO3-, N2O and organic N in an old Danish beech forest [HNO3]
1999
Rasmussen, L. | Beier, C. | Pilegaard, K. | Ambus, P. | Mikkelsen, T. | Jensen, N.O. (Risoe National Lab., Roskilde (Denmark)) | Kjoeller, A. | Ladekarl, U.L.
