Damage of the forest stands in the Ore Mts. during 1995-1997
1999
Lomsky, B. | Sramek, V. (Vyzkumny Ustav Lesniho Hospodarstvi a Myslivosti, Jiloviste-Strnady (Czech Republic))
The aim of this contribution is to explain causes of damage of spruce and birch stands in the Ore Mts. after winters 1995/1996 and 1996/1997. The evaluation was done on sample plots in the damaged area. Meteorological factors, air pollution, and content of load elements in needles were analysed. The health state - defoliation and needle cast - of spruce and birch stands were evaluated as well. The results show that the stand damage was caused by combination of weather and air pollution factors. Spruce was impacted by long-term influence of the stress factors connected with low temperatures, hard rime, and high SO2 concentrations. The triggering factor of birch damage might have been the warm period during February and March 1997, followed by frosts.
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