Form 5a - ICP Forests

In general, the depth layer code is built by an “O“ in case of organic layers or a “M” in
case of mineral layers. Each succeed by two numbers. The first number is the decimeter
of the upper limit and the second number it the decimeter of the lower limit.
Example:
A mineral layer from 19 cm to 22 cm would be “M12”, the layer below from 22 to
35cm would be “M23”. A layer below from 35 to 38cm would be “M33” and the next
from 38 to 51cm would be “M35”. The depth layer codes M02, M24, and M48 are
exclusively defined for the upper and lower limits in the table below:
Example
for Code
Oxx
Mxx
O10
Upper
limit
Lower
limit
Layers description
Organic layer (Forest floor > 5 cm thick
mandatory)
-10 0 Sample ring depth lower limit is top of mineral
layer (depth is “0”) and upper limit is 10 cm above
(value “-10”)
Mineral layer
M01 0 10 Mineral soil between 0 and 10 cm (optional)
M12 10 20 Mineral soil between 10 and 20 cm (optional)
M02 0 20 Mineral soil between 0 and 20 cm (mandatory)
M24 20 40 Mineral soil between 20 and 40 cm (mandatory)
M48 40 80 Mineral soil between 40 and 80 cm (mandatory)
M81 80 100 Mineral soil below 80cm to 1m (optional)
M82 80 200 Mineral soil below 80cm to 2m (optional)
The code is specified in order to allow for a fast evaluation of mandatory soil water data
classified as foreseen in the above table. The sample ring depths allow a more detailed
description.
Examples for SWC and SWA tables and the linkage of data between them:
!SWC
!Sequence, country, plot, date, PFH_pit, horizon, SW_pit, depth_layer,
ring_depth_upper, ring_depth_lower, replicate, bulk_density, date_analysis,
other_observations
….
1 22 901 010709 901A 1 901A M02 0 20 1 810 010809 testdata
2 22 901 020709 901B 1 901B M02 0 20 1 820 020809 testdata
3 22 901 050709 901B 2 901B M24 20 40 1 850 050809 testdata
The data line below (sequence number 142) is linked by the values for country, plot,
date, SW_pit, depth_layer, and replicate to the second observation in SWC:
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