The use of some park woody species in an estimation of air pollution level - tree bark extract characteristics
1993
Suchara, I. (Vyzkumny Ustav Okrasneho Zahradnictvi, Pruhonice (Czech Republic))
In 1986-1989 specimens of outer bark from oak, pine, and spruce tres were analysed at Prague localities. Total conductivity, pH, and soluble sulphate contents were measured in bark extracts quarterly. The bark extract characteristics indicated the most polluted tree bark in the city centre and in spring seasons. Total conductivity and sulphate content in bark extracts were the best indicators of pollution levels. The correlation between assessed SO2 pollution and bark extract characteristics were relatively low due to the shortage of real SO2 values at given localities. Tree bark can be used as an universal indicator of environmental pollution if specific analyses are applied to determine the content of individual pollutants.
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