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Table II

Vertical structure of the forest stand in the two sample plots.

(a) - Plot 1.

Dominant Intermediate Dominated
layer layer layers
Quercus robur 28.1 6.9 0.0
Robinia pseudoacacia 65.5 65.5 5.6
Other broadleaves 9.4 27.6 94.4
(b) - Plot 2.

Dominant Intermediate Dominated
layer layer layers
Quercus robur 27.3 10.3 0.0
Robinia pseudoacacia 63.6 87.2 35.6
Other broadleaves 9.1 2.5 64.4