Table 4 Mean values and standard deviations of mechanical properties in each provenance.

From: Physical and mechanical properties of wood and their geographic variations in Larix sibirica trees naturally grown in Mongolia

Provenance

n

MOE (GPa)

MOR (MPa)

CS (MPa)

SS (MPa)

Mean

SD

Mean

SD

Mean

SD

Mean

SD

Khentii

5 (4)

8.89

0.46

103.9

5.8

51.1

9.4

12.3

1.0

Arkhangai

5

7.03

0.50

79.8

4.9

46.8

2.7

13.0

0.3

Zavkhan

5

8.31

1.40

98.1

17.2

50.3

5.4

11.4

0.9

Khuvsgul

5

8.10

0.67

95.4

6.7

46.3

2.4

10.4

0.9

Selenge

5

9.51

0.75

101.5

8.4

50.7

2.9

11.0

1.2

Total/mean

25 (24)

8.35

1.15

95.4

12.4

49.0

5.2

11.6

1.3

F-values

 

5.912

4.475

0.965

6.432

p-values

 

0.029

0.010

0.448

0.002

  1. n number of trees, MOE modulus of elasticity, MOR modulus of rupture, CS compressive strength parallel to grain, SS shearing strength, SD standard deviation. Each strength property value in each provenance was calculated by averaging the mean values of five trees. The mean value in each tree was calculated by averaging the values obtained from different radial positions. The values of the mechanical properties were adjusted to the values in the 12% moisture content condition. There were four sample trees in the static bending test in Khentii due to a failure to obtain data during the testing. F-values and p-values were obtained with a one-way ANOVA among provenances.
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