Form 5a - ICP Forests

Column Description
Format Ref_Tab
Item
#
12-15 Tree number C 4 (19) Mandatory
17-19 Tree Species code I 3 X (20) Mandatory
21-25 Diameter (maximum 999.9 cm) F 5 (42) Mandatory
27-31 Diameter (maximum 999.9 cm) F 5 (42) Mandatory +)
33-35 Bark (maximum 9.9 cm) F 3 (43) Optional
37-40 Height rounded off to the nearest
0.1 meters (maximum 99.9 m)
42-47 Tree volume
(maximum 99.999 m 3 )
49-52 Height to crown base rounded off to
the nearest 0.1 meters
(maximum 99.9 m)
54-57 Crownwidth rounded off to the
nearest 0.1 meters
(maximum 99.9 m)
59-60 Mortality and removal code
(01, 02, 03)
F 4
(44) Optional
F 6 (45) Optional
F 4 (46) Mandatory
++)
F 4 (47) Optional
I 2 X (88) Mandatory
62-101 Other observations (text) C 40 (84) Optional
+)
++)
when calipers are used
when tree height is measured and the crown base is visible
4.9.3 XX2007.IRA
Contents of file of increment information – ring analysis and
stemdisk analysis (optional)
Each data file has to start with a comment line. This line starts with an exclamation
mark:
!Sequence, plot, tree, tree_species, dbh, diameter, diameter_5, diameter_10,
diameter_15, diameter_20, diameter_25, diameter_30, diameter_35, diameter_40,
diameter_45, diameter_50, other_observations
Column Description Format Ref_Tab Item #
1 – 4 Sequence number (1 to 9999) I 4
6 – 9 Plot number (maximum 9999) I 4 (2)
11-14
Tree number with initial R for Ring
analysis and D for Disk sampling
Page 43 / 151
C 4 (39)
16-18 Tree Species code I 3 X (20)
20-24 Actual DBH over bark F 5 (42)
26-30 Actual diameter under bark F 5 (48)
32-36 Diameter under bark 5 years ago F 5 (48)
38-42 Diameter under bark 10 years ago F 5 (48)
44-48 Diameter under bark 15 years ago F 5 (48)