细化搜索
结果 51-60 的 219
[Studies on the restoration of yellow-shooted Norway spruce trees in the Fichtelgebirge with different Mg-fertilizers]
1986
Zech, W. | Kaupenjohannn, M. | Hantschel, R. | Schneider, B.U.
[Benefits and risks of forest fertilization with special regard to soil chemistry]
1986
Hildebrand, E.E. (Forstliche Versuchs- und Forschungsanstalt Baden-Wuerttemberg, Freiburg (Germany, F.R.))
[Restabilizing measures, fertilization. Final evaluation - further research requirements]
1986
Evers, F.H.
[Studies on re-stabilizing measures in forests injured by air pollution in the Southern Taunus]
1986
Krieter, M. (Mainz Univ. (Germany, F.R.). Geographisches Inst. Umweltforschungsstation)
Quality and utilization of wood from damaged trees
1986
Becker, M. (Freiburg Univ. (Germany, F.R.). Inst. fuer Forstpolitik und Raumordnung)
Effects on soil and ground water of acid precipitation (corrosion and contamination of drinking water)
1986
Broemssen, U. von (Statens Naturvaardsverk, Solna (Sweden). Forsknings- och Utvecklingsavd.)
Forest damage - a status report on effects via the leaves
1986
Fink, S. (Albert-Ludwigs-Univ., Freiburg (Germany, F.R.). Inst. fuer Forstbotanik und Holzbiologie)
Forest damage - a status report on inventory methods [crown damage]
1986
Becher, G. (Bundesforschungsanstalt fuer Forst- und Holzwirtschaft, Hamburg (Germany, F.R.). Inst. fuer Weltforstwirtschaft)
Soil acidification and metal solubility in forests of south Sweden
1986
Tyler, G. (Lund Univ. (Sweden). Vaextekologiska Inst.)
Inventory of forest damage in Sweden [needle loss, crown density]
1986
Bengtsson, G. (Sveriges Lantbruksuniv., Umeaa (Sweden). Inst. foer Skogstaxering)