خيارات البحث
النتائج 1 - 9 من 9
Atmospheric nitrogen deposition at a conifer forest: response of free amino acids in Engelmann spruce needles
1999
Calanni, J. | Berg, E. | Wood, M. | Mangis, D. | Boyce, R. | Weathers, W. | Sievering, H. (Global Change and Environmental Quality Program, Department of Environmental Sciences, Center for Environmental Sciences, Campus Box 172, University of Colorado at Denver, PO Box 173364, Denver, CO 80217-3364 (USA))
Local impacts of a rural coal-burning generating station on lichen abundance in a New England forest
1999
Murphy, K.J. | Alpert, P. | Cosentino, D. (Department of Biology, University of Massachusetts, Amherst, MA 01003-5810 (USA))
Nitrogen status and impact of nitrogen imput in forests: indicators and their possible use in critical load assessment
1999
Gundersen, P.
New approach to the exposure-response study of the forest ecosystems around Karabash Copper Smelter [South Ural]
1999
Butusov, O.B. (Moscow State Univ. of Ecological Engineering (Russia))
Mapping critical loads of S and N for forests in Eastern Canada and the northeastern U.S.
1999
Ouimet, R. | Pardo, L.
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.
Can the division sum (Ca + K + Mg divided by Al) ratio be used as a predictive tool for estimating forest damages?
1999
Goeransson, A. (SLU, Uppsala (Sweden))
Past land use should be taken into account when assessing critical loads of nitrogen
1999
Dambrine, E. | Dupouey, J.L. | Jussy, J.H. | Koerner, W. | Ranger, J. | Benoit, M.
Pilot study on the relationship between defoliation and critical loads exceedance in Poland
1999
Mill, W. | Wawrzoniak, J.
