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Forest Ecosystems

Table 4 The occlusion effect caused by non-stem components

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

Plot ID

Totally blocked stems

Seriously incomplete stems

Number

Percentagea

Number

1

2

2/3

4

4

2

1/3

1

5

19

3/4

7

6

5

1/3

13

10

4

1/3

10

12

9

4/9

12

16

0

0

0

18

0

0

1

19

1

1/3

0

20

29

3/4

8

22

0

0

2

Mean

–

1/3

–

  1. Note: a The percentage of the undetected stems caused by non-stem components in all undetected stems. The seriously incomplete stems are the stems where the completeness of the retrieved stem curves is less than 5%
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