Vliv ozonu na lesní porosty - mechanismus působení, vliv na dřeviny, ukazatele poškození = Ozone impact on forest stands – mechanism, effect on trees, damage markers

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Forests in Central Europe were, and, in certain level, they still are, negatively infl uenced by air pollution. As the impact of sulphur dioxide decreased signifi cantly, besides acid deposition affecting gradual degradation of the forest soils, mainly ozone could be the most important factor, exceeding regularly the limits in most of the Czech Republic. The ozone impact on forest stands is rather complicated for many different reasons. This gas is not directly produced – it means the production cannot be easily decreased. In the plant cells no residua of the ozone infl uence can be revealed - so its impact can be hardly distinguished from the natural oxidation stressors. Its impact on the plants depends on the stomata behaviour - high O3 concentrations in the atmosphere do not necessarily mean high level of damage. Other stressors can either increase or minimise the ozone effects. Mainly for the above mentioned reasons, the risk of increased O3 concentrations for the forest stands still cannot be specifi ed. The article reviews today knowledge of the ozone impact on forest stands, ways of investigation and proving of the changes, and of the possible effect on tree health and timber production. The aim is, besides references survey, to inform on the criteria, including visual assessment of the ozone effect, biochemical and structural markers, which can be used in the monitoring of the ozone impact on forest in Central Europe. … full description

Bibliographic Details

Other Authors

Vít Šrámek, 1969- , Radek Novotný, 1976- , Hana Uhlířová, 1946- , Emilie Bednářová, Iva Hůnová, 1958-

Document Type

Articles

Physical Description

5 il.

Published in

Zprávy lesnického výzkumu. -- ISSN 0322-9688. -- Roč. 52, č. 2, (2007), s. 138-147

Subjects

FOREST STANDS

AIR POLLUTION

OZONE

WOODY PLANTS

BROADLEAVED TREES

CONIFERALES

DAMAGE

SYMPTOMS

lesní porosty

znečištění vzduchu

ozón

dřevité rostliny

listnaté stromy

Coniferales

poškození

symptomy

Item Description

barev. fot.

Bibliography

Bibliografie na s. 144-146