خيارات البحث
النتائج 1 - 10 من 33
[Chemical soil conditions following the effects of pollutants on the fine root system of our forest trees]
1987
Schuett, P.
[Effects of pollutant gas compounds on overground plant organs of Norway spruce, silver fir, Scots pine and European beech]
1987
Arndt, U. | Guderian, R.
[[Forest] diseases caused by microorganisms]
1987
Nienhaus, F.
[Identification of damage and economical evaluation of forests damaged by air pollution]
1987
Brabaender, H.D. | Hildebrand, G.
[Ecological effects and silvicultural conception of continuous pollution stress in Northern Federal Republic of Germany]
1987
Otto, H.J. (Niedersaechsisches Ministerium fuer Ernaehrung, Landwirtschaft und Forsten, Hannover (Germany, F.R.))
[Forest genetical perspectives of forest damages in Middle Europe and possibilities for influencing the breeding methods]
1987
Kleinschmit, J. (Niedersaechsische Forstliche Versuchsanstalt, Escherode (Germany, F.R.). Abt. fuer Forstpflanzenzuechtung)
[Anthropogenic changes of forest ecosystems. History - present - future]
1987
Ulrich, B. (Goettingen Univ. (Germany, F.R.). Inst. fuer Waldernaehrung)
[Investigations on nutrition state of beech [Fagus sylvatica L.] and spruce [Picea abies Karst.] and nutrient content on fixed sample plots in Switzerland]
1987
Flueckiger, W. (Institut fuer Angewandte Pflanzenphysiologie, Schoenenbuch (Switzerland))
[Long term perspectives of increased nitrogen input in forest ecosystems: is eutrophication threatening?]
1987
Beese, F. (Goettingen Univ. (Germany, F.R.). Inst. fuer Bodenkunde und Waldernaehrung) | Matzner, E.
[Nutrient supply of middle European commercial forests]
1987
Zoettl, H.W. (Goettingen Univ. (Germany, F.R.). Inst. fuer Bodenkunde und Waldernaehrung)
