# Required Input Tables

All OSM variants require two input tables that describe, respectively:

· Stand-level or plot-level inventory attributes

· Tree-level inventory attributes

Information in these two tables is linked by one column ‘SurveyID’.

## OSM Stand List Table (OSM_StandList)

This documentation only describes additional columns defined by the Acadian Variant. See OSM documentation on input tables for all columns required or recognized.

### Additional table columns defined by the Newfoundland and Labrador variant

Column | Type | Constraint | Default | Description
NL Models
District | Text | 2, 4-26 | 4 | NL Forest Management Districts.
Management | Text | None, Clearcut, Plant, PCT, PartialCut | None | Management Code: · None (no recent management history; > 25 years) · PartialCut (partial harvest < 25 years ago; extensive management) · Clearcut (<25 years old, no regeneration management) · PCT (was pre-commercially thinned) · Plant (planted and intensively managed through rotation).
IsGoodSite | Boolean | True | False | True | This is a productivity site call made visually by field crews in NL inventory plots, known as ‘Actual Site’. High and Good sites should be set to True, and Moderate and Poor site calls as False.
MAT | Float | Number or Null | 3 | NL mean annual temperature (MAT) for plot location and elevation. Extracted using Climate NA Normals for 1961-1990. Used by the NL tree height model. Ranges from -2 to 7 degrees Celsius.
IsBarren | Boolean | True | False | False | If the NL ecoregion is considered barren, set to true; e.g., Coastal Barrens EcoRegion. This variable influences diameter growth if site index models are used, but otherwise has no use in the model. Site index based diameter growth models were developed but are not currently used by the Variant, so this variable may be removed in later versions.
Acadian Models
BGI | Float | >=0 or Null | 3000 | Biomass Growth Index (kg/ha/year) used to determine site productivity for default growth and height models. www.forusresearch.com\bgi.php
ClimateIndex | Float | b/w 1 & 40 | 10.0 | The Acadian ingrowth model still depends on Climate Index, but this variable as little effect on this model and the default value of 13.5 is the average for the Acadian forest region. This was lowered to 10.0 for NL.

## OSM Tree List Table (OSM_TreeList)

See OSM documentation on input tables. No additional tree attributes defined by the Acadian Variant.