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Результаты 301-310 из 325
[Anthrogogenic air pollutants as stress factors of terrestric ecosystems and ways to reduce their damaging effects. Sub programme: effects of lower influences of gaseous pollutants on Norway spruce clones studied in open-top-chambers and in the field]
1990
Debus, R. | Euteneuer-Macher, T.
[Studies on adaption processes of birch populations by means of isoenzyme-marker genes]
1990
Scholz, F. (Bundesforschungsanstalt fuer Forst- und Holzwirtschaft, Grosshansdorf (Germany, F.R.). Inst. fuer Forstgenetik und Forstpflanzenzuechtung) | Geburek, T.
[Studies in open-top-chambers on the resistance behaviour of forest trees and agricultural plant species against ozone, sulphur dioxide and nitrogen dioxide related to the nutrient supply]
1990
Kueppers, K. (Essen Univ. (Germany, F.R.). Inst. fuer Angewandte Botanik) | Henrich, P. | Machovics, A. | Guderian, R.
[Change of vegetation at the alpine timberline]
1990
Blaschke, H. (Muenchen Univ. (Germany, F.R.). Lehrstuhl fuer Forstbotanik) | Dotzler, M. | Kohler, U. | Paul, L. | Mack, P. | Stoelting, R. | Schuett, P.
[Ion deposition by fog interception in forests of high altitudes]
1990
Winkler, P. (Deutscher Wetterdienst, Hamburg (Germany, F.R.). Meteorologisches Observatorium)
[Sudies on the ratio of stable sulphur 32 S and 34 S (delta 34 S - value) isotopes in forests damaged by air pollution]
1990
Jaeger, H.J. | Giesemann, A.
[Studies on the effects and optimization of liming measures von vitality, nutrient supply and soil quality of Norway spruce and European beech stands. The influence of liming on biological and chemical parameters of an acid brown soil site as substrate of Norway spruce]
1990
Koerdel, W. | Kloeppel, H. | Fabig, W. | Kaltz, A.
[Physiological, biochemical and cytomorphological studies with Norway spruce trees effected by air pollution]
1990
Wild, A. | Forschner, W. | Dietz, B. | Rosenkranz, T. | Sabel, P. | Schmitt, V.
[Forest ecosystems near urban areas. Sub project 1.8: Recording and analysis of microbial activities in differentiated soil areas]
1990
Kraepelin, G. (Technische Univ. Berlin (Germany, F.R.). Inst. fuer Biochemie und Molekulare Biologie, Botanik und Mikrobiologische Chemie) | Brose, A. | Peters, M. | Niemann, H. | Trautmann, C.
[Recording of reactive atmospherical trace elements near damaged respectively endangered forest stands (Basis subject: Determination of certain organic trace elements)]
1990
Schilling, M. (Dortmund Univ. (Germany, F.R.). Inst. fuer Spektrochemie und AngewandteSpektroskopie) | Hoffmann, T. | Klockow, D.
