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Table 3 The occlusion effect caused by tree stems

From: Quantification of occlusions influencing the tree stem curve retrieving from single-scan terrestrial laser scanning data

Plot ID

Totally blocked stems

Partly blocked stems

Number

Percentagea

Number

Mean bias (cm)

1

1

1/3

1

−7.4

4

4

2/3

5

−8.6

5

7

1/4

1

−8.3

6

10

2/3

5

−19.2

10

9

2/3

3

−18.2

12

11

55

8

−10.5

16

4

1

6

−12.8

18

2

1

4

−24.0

19

2

2/3

0

20

10

1/4

7

−7.8

22

3

1

1

−19.3

Mean

2/3

−13.6

  1. Note: aThe percentage of the undetected stems caused by tree stems in all undetected stems