Canada's Forest Inventory 2001 - Publications du gouvernement du ...

Appendix III. Data Formats
Data Format
Each record in the attribute database has the following format:
Column
number
Column name Data type
1 province Number (2)
2 phAse Number (4)
3 summAry unit Varchar2 (10)
4 mApping_lAbel Varchar2 (10)
5 ecozone Number (2)
6 ecoregion Number (3)
7 forest_region Number (2)
8 forest_section Number (5)
9 boreAl Number (1)
10 ownership Number (2)
11 stAtus Number (2)
12 protection Number (1)
13 lAnd_clAss Number (5)
14 site_quAlity Number (3,1)
15 stocking_clAss Number (3)
16 Age_clAss Number (2)
17 mAturity_clAss Number (1)
18 forest_type Number (1)
19 predominAnt_genus Number (2)
20 first_species Number (4)
21 AreA Number
22 volume_id Number (7) ß link to volume tables
23 vol_type Number (1)
24 conif_vol Number
25 broAdl_vol Number
26 totAl_vol Number
27 conif_vphA Number
28 broAdl_vphA Number
29 totAl_vphA Number
30 dAtA_source_id Number (3) ß link to data source description table
31 Accessed Number (1)
Volume_id is a link to the species-level volume table for each province. The species detail volumes are stored separately
from the area description tables to save space, as not all records in the area table have volume (all the records that are not
stocked forest land), and as the same volume record may be used for a number of area records. There are two formats
for volume tables. One (volume rank table) lists the species code and species volume in ranked order of volume for each
volume_id; the other (volume description table) lists the species code, species volume, and species rank for each volume_id.
The latter table facilitates retrievals by species codes, whereas the former resembles the traditional format of volume tables.
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