Recommendations concerning inventory of timber, fuelwood, and nontimber products and charcoal species regeneration



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Appendix C. Calculations of proportions of wood volume in fagots


Species

Avg value for Proportion of Fagot Vol to Total Vol

Number of trees in calculation

St Dev of Proportions

Coefficient of Variation for the species

CHARCOAL













Anogeissus leiocarpus

0.373

3

0.0299

8%

Combretum glutinosum

0.344

43

0.1494

43%

Combretum nigricans

0.619

1







Hexalobus monopetalus

0.310

19

0.1232

40%

Piliostigma thonningii

0.362

10

0.1363

38%

Strychnos spinosa

0.662

9

0.1852

28%

Terminalia avicennioides

0.329

23

0.1346

41%

Terminalia macroptera

0.359

23

0.1427

40%







131







SAWTIMBER













Bombax costatum

0.150

37

0.0777

52%

Cordyla pinnata

0.184

32

0.0940

51%

Erythrphleum guineense

0.167

23

0.1071

64%

Lannea acida

0.224

35

0.1445

65%

Pterocarpus erinaceus

0.231

35

0.1507

65%

Prosopis africana

0.188

20

0.0760

41%







182







N.B.: 125 cut trees had no “sections” to stack, only fagots. All trees had at least ONE fagot (up to 26 fagots, for sawtimber) to weigh.

Species

No. of trees in sample

Avg Stump Ht (cm)

StDev of Stump Ht

CV of Stump Ht

Avg Height (m)

Avg Length (m)

CHARCOAL



















Anogeissus leiocarpus

4

25

9.95

38.62%

9.63

9.78

Combretum glutinosum

73

16

7.99

47.90%

7.74

8.22

Combretum nigricans

2

11

5.66

51.43%

4.65

5.55

Hexalobus monopetalus

40

14

8.51

59.21%

5.82

6.24

Bauhinia thonningii

22

16

8.59

53.66%

5.68

6.15

Strychnos spinosa

31

10

4.58

41.90%

4.36

4.83

Terminalia avicennioides

40

16

8.06

49.81%

5.09

5.56

Terminalia macroptera

30

14.

6.90

49.64%

9.43

9.71

SAWTIMBER



















Bombax costatum

39

44

25.98

58.61%

12.85

13.29

Cordyla pinnata

35

30

14.97

48.38%

11.36

11.53

Erythrphleum guineense

23

28

17.14

59.29%

15.22

15.35

Lannea acida

38

19

10.37

52.82%

9.01

9.68

Prosopis africana

25

27

15.14

56.09%

11.56

11.32

Pterocarpus erinaceus

37

31

15.88

51.13%

12.34

12.62



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