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Table 1 Sample sizes and tree dimensions in 2016 (last survey) as well as mean annual tree volume growth in 1998–2016 for Norway spruce and European beech in mono-specific and mixed-species stands used for this study

From: Drought can favour the growth of small in relation to tall trees in mature stands of Norway spruce and European beech

 

n 2016

d (cm)

h (m)

v (m3)

iv1998–2016 (dm3∙yr− 1)

monospecific stands

 Norway spruce

43

    

 mean

 

34.8

32.2

1.54

32.4

 min

 

21.5

27.7

0.50

0.80

 max

 

51.0

35.3

3.23

95.0

 European beech

28

    

 mean

 

26.0

27.7

0.87

18.8

 min

 

11.3

20.0

0.09

0.40

 max

 

48.1

32.0

3.07

77.2

mixed-species stand

 Norway spruce

19

    

 mean

 

35.8

32.4

1.62

30.1

 min

 

18.9

26.1

0.36

0.40

 max

 

48.0

34.9

2.86

69.0

 European beech

35

    

 mean

 

28.4

28.5

1.05

17.1

 min

 

15.4

23.6

0.20

0.30

 max

 

47.9

32.0

3.05

91.7

 total

54

    

 mean

 

31.0

29.9

1.25

23.2

 min

 

15.4

23.6

0.20

0.30

 max

 

48.0

34.9

3.05

91.7

  1. Sample size in 2016 (n2016), mean, minimum, and maximum values of stem diameter (d) at breast height, tree height (h) and tree volume (v), mean annual volume growth in the period 1998–2016 (iv1998–2016)