National Ecological Framework (11 of 23)
Parent Material Textural Group
These data are presented as a set of components within each polygon. The following attributes are included:
| Name | Description |
|---|---|
| CMP | Component Number (arbitrary) |
| PERCENT | Percent of polygon occupied by the component |
| TEXTURE | Parent Material Textural Group |
Soil texture indicates the relative proportions of the various soil separates (sand, silt, clay) as described in the Canadian System of Soil Classification.
Soil separates are mineral particles, <2.0 mm in equivalent diameter, ranging between specified size limits: sand 2.0-0.05 mm; silt 0.05-0.002 mm: clay <0.0002 mm.
Coarse fragments are rock fragments >2.0 mm in diameter and include: gravel 0.2 -7.5 cm and cobbles 7.5-25.0 cm.
The following table shows the class definitions that are used.
| Code | Texture Group |
|---|---|
| CL | CLAY LOAM |
| KCL | CLAY LOAM >35% Coarse Fragments |
| CY | CLAY |
| LM | LOAM |
| KLM | LOAM >35% Coarse Fragments |
| SD | SAND |
| KSD | SAND >35% Coarse Fragments |
| SL | SANDY LOAM |
| KSL | SANDY LOAM >35% Coarse fragments |
| KSP | COBBLY SAND |
| O | ORGANIC |
| # | Not Applicable (water, ice or urban) |
Source:
Soil Landscapes of Canada (SLC) V.2.2 (1996), National Soil DataBase, Canadian Soil Information System. Available at: /cansis/nsdb/slc/v2.2/
Shields, J. A., C. Tarnocai, K.W.G. Valentine, and K. B. MacDonald. 1991. Soil Landscapes of Canada - Procedures Manual and User's Handbook. LRRC Contribution Number 88-29, Land resource Research Centre, research Branch, Agriculture Canada, Ottawa,74 pp. This manual is superceded by the Internet version available at: /cansis/nsdb/slc/index.html