Refinar búsqueda
Resultados 1-8 de 8
Deterioration of forests in the Sudety Mountains, Poland, detected on satellite images
1997
Bochenek, Z. | Ciolkosz, A. | Iracka, M. (Institute of Geodesy and Cartography, Remote Sensing and Spatial Information Centre-OPLIS, ul.Jasna 2/4, 00-950 Warsaw (Poland))
Polish mountain forests: past, present and future
1997
Grodzinska, K. | Szarek-Lukaszewska, G. (W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Krakow (Poland))
Forest health and environmental pollution in Slovakia
1997
Oszlanyi, J. (Institute of Landscape Ecology, Slovak Academy of Sciences, PO Box 254 Stefanikova St., No. 3, 814 99 Bratislava (Slovak Republic))
Forest health status in Hungary
1997
Szepesi, A. (State Forest Service, H-1054 Budapest, Szechenyi u. 14 (Hungary))
Effects of environmental stress on forest crown condition in Europe. Part III: estimation of critical deposition and concentration levels and their exceedances
2000
Vries, W. de | Reinds, G.J. | Klap, J.M. | Leeuwen, E.P. van | Erisman, J.W.
Effects of environmental stress on forest crown condition in Europe. Part I: hypotheses and approach to the study
2000
Vries, W. de | Klap, J.M. | Erisman, J.W.
Effects of environmental stress on forest crown condition in Europe. Part IV: statistical analysis of relationships
2000
Klap, J.M. | Voshaar, J.H.O. | Vries, W. de | Erisman, J.W.
Changes in forest ecosystems of Viru county influenced by industrial air pollution
2000
Mandre, M. (Estonian Agricultural Univ., Tartu (Estonia). Forest Research Inst.)
Prolonged effects of the multicomponent air pollution complexes emitted from the cement production in Kunda and oil shale processing in Kohtla-Jaerve, North-East estonia, on the forest ecosystems are discussed. It was found that atmospheric input substantially affects biogeochemical cycling in forest. The comparatively high concentrations of alkaline dusts and ash and various gaseous pollutants in the atmosphere of the investigated areas over 40 years have caused qualitative and quantitative changes in the forest soil, soil water and precipitation and in the state of forest and trees. Although the levels of air pollutants emitted by the industry have seriously decreased in recent years, alkalisation of the growth environment of trees is still essential in some regions. Alkalisation of soil and soil water in the vicinity of Kunda and Kohtla-Jaerve complicated mineral nutrition processes and disbalanced mineral elements composition in tissues, which resulted in a decrease in the increment and quality of trees
Mostrar más [+] Menos [-]