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Environmental gradients by main tree species

© Inken Krüger/Thünen Institut
pH of the soil solution by main tree species for two time periods (2005-2009 left and 2015-2019 right).
© Inken Krüger/Thünen Institut
Nitrogen deposition in the open field by main tree species for two time periods (2005-2009 left and 2015-2019 right)
© Inken Krüger/Thünen-Institut
Mean annual precipitation in the open field by main tree species for two time periods (2005-2009 left and 2015-2019 right)
© Inken Krüger/Thünen Institut
Altitude of the Level II sites by main tree species
© Inken Krüger/Thünen Institut
Soil type of the upper soil (green beech, yellow oak, red pine, blue spruce, dark red douglas fir, purple larch)
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