Rotation

Spacing

SI

Number of tree

(tree/rai)

DTH

(m)

H

(m)

GBH

(cm)

Stem volume

(m³/tree)

Yield volume

(m³/rai)

15-year

4 m × 4 m

14

88

10.3

7.6

33.8

0.051

4.488

15-year

4 m × 4 m

18

79

13.3

10.5

43.6

0.101

7.98

15-year

4 m × 4 m

22

72

16.3

13.3

52.8

0.176

12.634

15-year

4 m × 4 m

26

66

19.2

16.2

61.6

0.279

18.522

15-year

4 m × 4 m

30

62

22.2

19.1

70.1

0.413

25.703

15-year

2 m × 4 m

14

149

10.3

7.6

30

0.037

5.573

15-year

2 m × 4 m

18

133

13.3

10.5

38.7

0.075

9.908

15-year

2 m × 4 m

22

121

16.3

13.3

46.9

0.13

15.688

15-year

2 m × 4 m

26

112

19.2

16.2

54.7

0.205

22.998

15-year

2 m × 4 m

30

105

22.2

19.1

62.3

0.304

31.915

20-year

4 m × 4 m

14

78

11.7

8.9

40.7

0.076

5.906

20-year

4 m × 4 m

18

69

15.1

12.2

52

0.152

10.501

20-year

4 m × 4 m

22

63

18.4

15.5

62.7

0.263

16.626

20-year

4 m × 4 m

26

58

21.8

18.7

72.9

0.417

24.373

20-year

4 m × 4 m

30

55

25.1

22.0

82.8

0.618

33.824

20-year

2 m × 4 m

14

131

11.7

8.9

36.1

0.056

7.334

20-year

2 m × 4 m

18

117

15.1

12.2

46.2

0.112

13.039

20-year

2 m × 4 m

22

106

18.4

15.5

55.7

0.194

20.644

20-year

2 m × 4 m

26

99

21.8

18.7

64.8

0.307

30.264

20-year

2 m × 4 m

30

92

25.1

22.0

73.6

0.455

41.999