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Table 5 Comparison of recently cruised stands using old strata system and current strata system

From: The use of airborne laser scanning to develop a pixel-based stratification for a verified carbon offset project

2009 Data (2008 Plot Data Is Grown to 2009)

2010 Data

Strata

Stand

Ha

Year Cruised

Plots

BA (m 2 /ha)

TPH (> 5 cm)

BF per ha

C (Mg/ha - no dead)

# of 2010 Strata

BA (m 2 /ha)

TPH (> 5 cm)

BF per ha

C (Mg/ha - no dead)

DR1M

2

53

2009

4

47.3

739.8

35,031

174.5

26

45.7

824.8

28,938

157.6

GX2D

115

7

2009

4

25.4

339.7

6,169

123.6

16

38.2

709.6

17,104

132.8

MH2D

171

35

2008

4

32.7

1,255.6

32,564

127.8

23

44.0

822.0

24,558

150.9

DR2D

239

13

2008

4

19.0

219.0

26,084

93.7

23

42.0

695.5

28,769

145.5

DR3D

265

54

2008

4

43.2

883.1

55,819

217.8

29

44.6

737.9

32,592

154.5

CH2M

269

183

2008

20

43.1

1,404.7

35,222

156.2

30

48.5

839.4

34,417

169.5

CH2M

270

138

2008

16

47.5

1,646.9

28,088

170.3

30

48.3

842.1

34,136

168.2

CH2M

271

131

2008

16

40.0

1,745.1

22,248

140.2

29

46.7

808.5

32,671

163.1

  1. The estimates of stand level TPH, Board Feet (BF)/ha, and Metric Tons of Carbon (MgC)/ha showed no statistically significant difference between the past stand delineation estimate and aggregating the current stratification system to the old stand boundaries except for basal area (paired t-test p-values: BA = 0.034, TPH = 0.23, BF/ha = 0.81, metric tons Carbon/ha = 0.7).