Soil Map Unit File (SMUF)

Filename

{covername}.SMUF

Description

The Soil Map Unit File identifies the soil codes and landscape phases which are components of a polygon. This (owner's view) file is later converted into the CMP and MAPUNIT tables.

Contents

 Field    Field Name     Type    Width     Dec

 -----    ----------     ----    -----     ---

  1       PROVINCE       CHAR      2

  2       MAPUNITNOM     CHAR      60

  3       SOIL_CODE1     CHAR      3

  4       MODIFIER1      CHAR      3

  5       EXTENT1        NUMERIC   3

  6       SOIL_CODE2     CHAR      3

  7       MODIFIER2      CHAR      3

  8       EXTENT2        NUMERIC   2

  9       SOIL_CODE3     CHAR      3

 10       MODIFIER3      CHAR      3

 11       EXTENT3        NUMERIC   2

 12       SLOPEP1        NUMERIC   5        1

 13       SLOPEP2        NUMERIC   5        1

 14       SLOPEP3        NUMERIC   5        1

 15       STONE1         CHAR      1

 16       STONE2         CHAR      1

 17       STONE3         CHAR      1

 18       DATE           DATE      8

Relationships

• A record in this file is unique with respect to PROVINCE & MAPUNITNOM.
• MAPUNITNOM is required to relate (1:N) to the PAT.
• PROVINCE + SOIL_CODE* + MODIFIER* are required to relate (1:N) to the SNF and SLF.
• In the past, this file was often merged with the PAT.

Limitations

The proportion of the polygon occupied by each separate component is identified. However, their location within the polygon is not defined. While the data model does not restrict the number of components or the proportion of the polygon that they occupy, restrictions have been recommended from a subject matter/organization standpoint.

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

 
Contact: Peter Schut