Refinar búsqueda
Resultados 1-10 de 12
Discussion of the effects of N with and without acidified S on a sitka spruce ecosystem after 5 years treatment
2002
Sheppard, L.J. | (CEH Edinburgh Bush Estate, Edinburgh (United Kingdom)) | Crossley, A. | Ingleby, K. | Carfrae, J. | Harvey, F. | Kennedy, V.
Significant differences in the effects of N alone compared with NS Acid have been found with respect to eutrophication and acidification. N alone had no effect on the pleurocarpous mosses, whereas NS Acid caused their death within 2 years. Both treatments enhanced stem area increment and N alone also doubled fine root growth. By contrast NS Acid treatments increased litterfall in a a dose response fashion
Mostrar más [+] Menos [-]Spectral differences of the functional crown parts and status of Norway spruce trees studied using remote sensing information
2002
Malenovsky, Z. (Academy of Sciences of the Czech Republic, Ceske Budejovice (Czech Republic). Institute of Landscape Ecology. Department of Forest Ecology) | Clevers, J.G. P.V. | Arkimaa, H. | Kuosmanen, V. | Cudlin, P. | Polak, T.
Results of the statistical tests showed the spectral disparity of the production part and highly damaged juvenile part of the spruce crown. A spectral difference of the juvenile and production crown part at early stress could not be shown. A low multiple stress impact was assessed for 75 randomly selected Norway spruce trees of the first AISA image. In case of the second AISA image occurrence of Cu-Zn sulphide mine partly influenced the crown status of the neighbouring spruce ecosystems
Mostrar más [+] Menos [-]Crown condition of Norway spruce in relation to sulphur and nitrogen deposition and soil properties in southeast Norway
1997
Solberg, S. | Toerseth, K. (Norwegian Forest Research Institute, Hoegskoleveien 12, N-1432 As (Norway))
Air pollution and forest decline in Central Europe
1995
Kandler, O. | Innes, J.L. (Botanical Institute of the Ludwig-Maximilians University of Munich, Menzinger Strasse 67, 80638 Munchen (Germany))
Effects of crown decline on increment in Norway spruce (Picea abies (L.) Karst) in southern Sweden
1989
Bjoerkdahl, G. | Eriksson, H. (Swedish Univ. of Agricultural Sciences, Garpenberg (Sweden). Dep. of Forest Yield Research)
Monitoring of forest vitality in Norway
1989
Venn, K. | Holen, C.O. (Norsk Institutt for Skogforskning, Aas (Norway). Avd. for Skogoekologi) | Loevseth, T. (Norsk Inst. for Jord- og Skogkartlegging, Aas (Norway))
Degradation and restoration processes in crowns and fine roots of polluted montane Norway spruce ecosystems
1995
Cudlin, P. | Chmelikova, E. (Academy of Sciences, Ceske Budejovice (Czech Republic))
Monitoring results of Norway spruce crown defoliation in the area of Oravske Beskids Mts. [Slovak Republic]
1995
Smelko, S. (Technicka Univ., Zvolen (Slovakia). Lesnicka Fakulta)
Entomofauna of cambio-xylophagous insects of Norway spruce stands impaired by anthropogenic factors in the Moravian-Silesian Beskids [Czech Republic]
1995
Zabiecki, W. (Akademia Rolnicza, Krakow (Poland)) | Kula, E.
Development of young mountain spruce stands undergoing various silvicultural measures in the Beskids [Czech Republic]
1995
Tesar, V. (Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Pestovani Lesa)
