Domsub Table

Filename

slc_v2r2_canada_domsub

Description

The DOMSUB file describes aspects of soil landscapes which had been described in version 1.1, but not carried forward into the Component / Carbon Layer Table structure.

Contents

Contents of dataset: slc_v2r2_canada_domsub
Field Name Type Width Description
1 SL string 6 Soil Landscape Identifier
2 RELIABILITY string 1 Reliability class of polygon
3 COMPLEXITY string 1 Complexity class of polygon
4 DISTRDOM string 3 Percentage of the polygon dominant soil landscape
5 DISTRSUB string 3 Percentage of the polygon subdominant soil landscape
6 REGFMDOM string 1 Regional Landform (dominant soil landscape)
7 REGFMSUB string 1 Regional Landform (subdominant soil landscape)
8 CMPLRDOM string 1 Kind of compacted, consolidated, or contrasting layer(dominant soil landscape)
9 CMPLRSUB string 1 Kind of compacted, consolidated, or contrasting layer(subdominant soil landscape)
10 CMPDPDOM string 1 Depth to compacted, consolidated, or contrasting layer (dominant soil landscape)
11 CMPDPSUB string 1 Depth to compacted, consolidated, or contrasting layer (subdominant soil landscape)
12 AVWATDOM string 1 Available water capacity in upper 120 cm (dominant soil landscape)
13 AVWATSUB string 1 Available water capacity in upper 120 cm (subdominant soil landscape)
14 WATABDOM string 1 Average depth to water table (dominant soil landscape)
15 WATABSUB string 1 Average depth to water table (subdominant soil landscape)
16 PHCALDOM decimal 3 pH of upper 15 cm of soil measured in CaCl2 (dominant soil landscape)
17 PHCALSUB decimal 3 pH of upper 15 cm of soil measured in CaCl2 (subdominant soil landscape)
18 PHWATDOM decimal 3 pH of upper 15 cm of soil measured in water (dominant soil landscape)
19 PHWATSUB decimal 3 pH of upper 15 cm of soil measured in water (subdominant soil landscape)
20 NITRODOM string 1 Nitrogen content (dominant soil landscape)
21 NITROSUB string 1 Nitrogen content (subdominant soil landscape)
22 WATBDDOM string 1 Water bodies (dominant soil landscape)
23 WATBDSUB string 1 Water bodies (subdominant soil landscape)
24 NAME1DOM string 6 Most representative soil name code (dominant soil landscape)
25 NAME1SUB string 6 Codominant or closely associated soil name code (dominant soil landscape)
26 NAME2DOM string 6 Most representative soil name code (subdominant soil landscape)
27 NAME2SUB string 6 Codominant or closely associated soil name code (subdominant soil landscape)

Relationships

  • A record in this file is unique with respect to SL.
  • SL is required to relate (1:1) to the PAT.

The proportion of the polygon occupied by the dominant and subdominant soil landscapes is identified. However, their location within the polygon is not defined.

Note that the dominant component for some polygons will be a non-soil (e.g. ice or rock). Analyses involving dominant soil components should take this fact into account.

Limitations

  • The SLCs have seen quite a few updates and boundary changes since version 1.1, but the DOMSUB data has not been validated or upgraded. Consequently, the reliability of this information may be poorer than the data found in the Component Table.

Origin

The DOMSUB file was extracted from the original dominant and subdominant files found in SLC version 1.1, in response to continuing requirements for pH and other attributes found only in these files. It was compiled from all existing 1.1 GIS coverages by intersecting those polygons with the more current version 2.2 polygons, and linking the version 2.2 polygon to the most dominant version 1.1 data.