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Table 1 Mean characteristics of plantations after treatment and for all commercial species, white spruce, balsam fir and hardwoods (standard error)

From: Density and diameter distributions of saplings in naturally regenerated and planted coniferous stands in Québec after various approaches of commercial thinning

 

Variables

Number of plots

DBH of all trees (cm)

DBH of saplings (cm)

DBH of merchantable trees (cm)

Density of all trees (trees per ha)

Density of saplings (trees per ha)

Density of merchantable trees (trees per ha)

Stand basal area of all trees (m2 per ha)

Stand basal area of saplings (m2 per ha)

Stand basal area of merchantable trees (m2 per ha)

αGsp

βGsp

Control

Total

15

12.5 (6.4)

4.8 (2.4)

16.1 (4.1)

2474 (469)

735 (400)

1739 (245)

39.6 (4)

1.7 (0.7)

37.9 (4.1)

  

WS

 

13.9 (5.7)

5.6 (2.2)

16.2 (4)

1805 (378)

345 (198)

1460 (321)

32.7 (13.3)

1 (0.6)

31.7 (6.4)

3.9 (2.1)

7.13 (0.72)

BF

 

10.2 (7.1)

3.9 (2.4)

16.3 (4.4)

499 (414)

255 (259)

244 (224)

5.9 (6.2)

0.4 (0.3)

5.5 (6.1)

2.45 (2.28)

4.46 (1.12)

HW

 

6.3 (5.5)

4.1 (2)

14.5 (6.5)

171 (262)

135 (225)

36 (53)

0.9 (1.4)

0.2 (0.3)

0.7 (1.3)

5.25 (4.67)

4.43 (1.58)

TrTElite

Total

19

12.8 (6.1)

4.8 (2.5)

15.9 (3.8)

2357 (627)

697 (485)

1660 (284)

36.9 (4.3)

1.5 (0.8)

35.4 (4.1)

  

WS

 

14.5 (4.7)

6.2 (2.2)

15.8 (3.5)

1584 (423)

217 (111)

1367 (352)

29.3 (8.4)

0.7 (0.4)

28.6 (5.9)

5.14 (2.22)

7.16 (1.55)

BF

 

9.8 (7.7)

3.8 (2.4)

17 (5.2)

618 (512)

345 (375)

273 (211)

7 (5.3)

0.5 (0.7)

6.5 (5.2)

3.93 (4.12)

4.45 (2.05)

HW

 

5.9 (3.9)

4.5 (2.1)

13.2 (3.3)

154 (325)

135 (314)

19 (44)

0.5 (0.7)

0.3 (0.5)

0.3 (0.6)

6.17 (4.33)

4.85 (1.88)

TrT1/3

Total

23

13.2 (6.3)

4.8 (2.3)

16.2 (4.3)

1855 (545)

490 (329)

1365 (372)

32 (6.4)

1 (0.6)

31 (6.3)

  

WS

 

14.3 (5.4)

5.5 (2.2)

16.1 (3.9)

1383 (434)

220 (135)

1164 (402)

26.2 (13.3)

0.6 (0.4)

25.6 (6.6)

4.13 (2.38)

6.58 (1.29)

BF

 

11.6 (8.3)

3.9 (2.3)

17.9 (5.7)

316 (420)

152 (299)

165 (168)

4.9 (4.7)

0.2 (0.5)

4.6 (4.5)

4.44 (2.56)

4.15 (1.9)

HW

 

6.7 (5.9)

4.2 (2.1)

14.3 (7.2)

155 (199)

119 (155)

36 (46)

0.9 (1.4)

0.2 (0.3)

0.7 (1.2)

5.28 (5.95)

4.59 (1.71)

TrTBF

Total

9

12.6 (6.1)

5.2 (2.4)

15.7 (4.2)

2254 (737)

657 (466)

1597 (372)

34.6 (5.1)

1.7 (1)

32.9 (4.6)

  

WS

 

13.9 (5.3)

5.9 (2.2)

15.7 (3.9)

1809 (295)

334 (136)

1475 (356)

31.2 (17.9)

1 (0.7)

30.2 (5.8)

4.48 (2.75)

7.25 (0.84)

BF

 

12 (7.4)

4.3 (2.7)

16.4 (5.2)

106 (49)

39 (24)

67 (68)

1.6 (0.8)

0.1 (0)

1.6 (1.7)

6.97 (6.48)

5.01 (2.76)

HW

 

6 (5.2)

4.4 (2.2)

13.9 (8.4)

339 (530)

284 (464)

55 (69)

1.7 (1.7)

0.5 (0.9)

1.2 (1.3)

5.99 (4.92)

4.94 (1.52)

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Annals of Forest Science

ISSN: 1297-966X