Refinar búsqueda
Resultados 1-10 de 20
[Studies on effect and optimization of liming measures on vitality, nutrient supply and soil quality of Norway spruce and European beech stands in two sites of the Hochsauerland]
1989
Oldiges, H. (Fraunhofer-Institut fuer Umweltchemie und Oekotoxikologie, Schmallenberg-Grafschaft (Germany, F.R.))
[Small RNAs [ribonucleic acid] of damaged and healthy forest trees]
1987
Riesner, D. (Duesseldorf Univ. (Germany, F.R.). Inst. fuer Physikalische Biologie) | Koester, S. | Beuther, E. | Loss, P.
[Results of studies conducted in the forest damage areas of North Rhein-Westphalia]
1986
Radermacher, L.
[Open-top-chambers - field studies in the Egge mountains]
1986
Krause, G.H.M.
[Studies on the natural regeneration of European beech in North Rhine-Westphalia]
1987
Roehrig, E. (Goettingen Univ. (Germany, F.R.). Inst. fuer Waldbau)
[The role of the State Institute for Ecology, Landscape Development and Forestry Planning of North Rhine-Westphalia in the clarification of the causes of new types of forest dieback]
1987
Schmidt, A. (Landesanstalt fuer Oekologie, Landschaftsentwicklung und Forstplanung des Landes Nordrhein-Westfalen, Recklinghausen (Germany, F.R.))
[Studies on the development of beech forest ecosystems damaged by air pollution in North Rhine-Westphalia]
1987
Huettermann, A. (Goettingen Univ. (Germany, F.R.). Forstbotanisches Inst.) | Merg, G. | Feig, R. | Fritz, E. | Godbold, D.
[The research topic of North Rhine-Westphalia on "air pollution and forest damage". - Research plan for the research programme]
1987
Koeth, I. | Prinz, B.
[On the effect of ozone and "acid fog" on the leaching of nutrients from Norway spruce]
1988
Krause, G.H.M.
[Measurement and experiment station in the forest (MEXFO).-Estimate of the substance input into a Norway spruce stand by means of the precipitation measurements of the year 1986]
1988
Prinz, B. | Specovius, J. | Schwela, D. | Thiele, V. | Metzger, F.
