Soil Map Unit File (SMUF)
The Soil Map Unit File identifies the soil codes and landscape phases which are components of a polygon. In later versions this file was converted into the CMP and MAPUNIT tables.
|2||MAPUNITNOM||string||60||Map Unit Symbol|
|3||SOIL_CODE1||string||3||Soil Code of component 1|
|4||MODIFIER1||string||3||Soil Code Modifier of component 1|
|5||EXTENT1||integer||3||Percent of polygon occupied by the component of component 1|
|6||SOIL_CODE2||string||3||Soil Code of component 2|
|7||MODIFIER2||string||3||Soil Code Modifier of component 2|
|8||EXTENT2||integer||3||Percent of polygon occupied by the component of component 2|
|9||SOIL_CODE3||string||3||Soil Code of component 3|
|10||MODIFIER3||string||3||Soil Code Modifier of component 3|
|11||EXTENT3||integer||3||Percent of polygon occupied by the component of component 3|
|12||SLOPEP1||float||5||Slope Steepness of component 1|
|13||SLOPEP2||float||5||Slope Steepness of component 2|
|14||SLOPEP3||float||5||Slope Steepness of component 3|
|15||STONE1||string||1||Surface Stoniness Class of component 1|
|16||STONE2||string||1||Surface Stoniness Class of component 2|
|17||STONE3||string||1||Surface Stoniness Class of component 3|
The proportion of the polygon occupied by each separate component of a map unit is identified. However, their location within any polygon is not defined. The data model limits the number of components to a maximum of three, even though more may have been recognized in the field.
Note that the dominant component for some map units will be a non-soil (i.e. water, rock, or ice). Analyses involving dominant soil components should take this fact into account.
- Date Modified: