Air pollutants put a strain on our forests. For instance they enter the forest soil in the form of rain. At the same time they can damage the needles and leaves of the trees.

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Ozone levels are decreasing, but exposure of forests remains high

Forests in Europe still suffer from excessively high ozone levels. The good news is that ozone concentrations are declining slowly but steadily.

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Beech foliage used to monitor the impact of a waste incinerator plant

For 40 years, researchers investigated the concentration of chloride, heavy metals and other elements in the foliage of a beech forest in the surrounding area of a waste incinerator.

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Heading image: Rolf Handke / pixelio.de