VRI Data Issues and Warts
Not Sufficiently Restocked - NSR
Not Sufficiently Restocked or NSR is a code found under the attribute Non Forest
Descriptor. This is a FIP (Forest Inventory Planning data model) classification based
attribute only, and is retained for the purposes of business transition from FIP to
Vegetation Inventory
Although NSR code is carried in the VRI data model, it is no longer collected or
assigned during an update or a VRI inventory. However, the old F records (identified
by Inventory –Standard = “F”) still contains this code.
NSR in the inventory was collected until 1998. Any NSR is likely to be at least 8
years old and is possibly free growing at this point.
There are 2 attribute fields which describes the forest cover type, whether it is
capable of supporting or not supporting commercial forests.
The Non-Forest Descriptor is distinctly different from the Non-Productive Descriptor
found in the Polygon Record:

The Non-Forest Descriptor indicates that the forest cover polygon is
potentially productive (NC, NCBR, NSR), but is not currently supporting
commercial forests. It is also used to determine potential areas for silviculture
treatment and to determine the net land base for Timber Supply Analyses.;

Non-Productive Descriptor indicates that the stand is not capable of
supporting commercial forests (A, R, GR, AF, NPBR, NP, Swamp, etc. – for a
comprehensive list, refer to vri data dictionary
http://www.for.gov.bc.ca/hts/vridata/standards/index.html).
The non-forest descriptor is tied to the polygon table, and the non-productive
descriptor is tied to the layer table.
To determine the polygon status of NSR, it is recommended you use the RESULTS
tables (Whse_Forest_Vegetation.Reslt_Forest_cover.Stocking_Status_Code). It is
more current and is the original source.