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Figure 4


Comparison of periodic mean annual increment of the mixed stands with neighbouring pure stands. Depicted is (a) the observed periodic mean annual volume increment PAIVsp,be over the expected of stem volume of the mixed stand plots and (b) the relative periodic mean annual above ground dry mass increment over mixing proportion (mbe). On average the overyielding in stem volume growth of the mixed stands amount to +0.51 m3 ha−1 y−1; the relation amounts to 1.08 on average and indicates an overyielding of +8%.

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