摘要：Monitoring the impact of air pollutants in 2005
In addition to Bioindicator Grid samples, some 3818 needle
and leaf samples were analysed in 2005 for accumulated
pollutant concentrations. These samples were sent in
by private persons and forest authorities for expert opinions
in the course of legal actions in accordance with the
Mining Act, the Waste Management Act and the Industrial
Law for Environmental Impact Assessment (UVP) as well
as statements concerning environmental impact (UVE).
13,5 % (n=3558) of the already analysed spruce samples
showed exceedances of the limit values for sulphur, 7,5 %
(n=710) of the limit values for fluorine and 13,4 %
(n=1033) of the limit values for chlorine. Chlorine and
chlorine compounds have become “important” air pollutants
in recent years. Due to the fact that many industrial
enterprises use low cost alternative fuels (“plastic combustion”)
the authorities prescribe foliar analyses which reveal
sometimes heavy chlorine and hydrogen chloride loads.
Besides being an atmospheric pollutant chlorine compounds
are contained also in road de-icing salts. High
concentrations of chloride were found in the north of
Austria where due to the opening of the iron curtain with
increasing traffic large quantities of de-icing salts are used
to keep roads trafficable also during winter time.
关键词：Spruce, bioindication, air pollutants, plant
permission
