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ATLAS databases consist of two basic elements: a
GIS map and growth and yield curves. The GIS map contains the spatial
information about where all harvest units and stands are located,
as well as links to a database with the stand characteristics. Yield
curves predict the merchantable volume of a stand as it ages through
time. Each yield curve is connected to the forest polygons through
stand types. Stand types are groupings of polygons with similar
leading tree species, growth characteristics, and harvest methods.
Stand types are also typically delineated by regeneration type,
and usually include independent growth curves for each regeneration
type (natural stands, managed stands, etc.).
The GIS database is usually generated from BC's forest
cover maps. These maps are first overlaid with all the relevant
administrative layers (tenure boundaries, landscape units, etc.)
and resource layers (riparian buffer zones, deer winter ranges,
etc.) to produce a resultant polygon map. The resultant polygons
are then grouped in a blocking process to form viable harvesting
units. Road locations can be added if an analysis of the transportation
system is desired.
| Unit |
Year Blocked |
Size Dataset |
Area |
Comments |
| Arrow TSA, and Arrow F.D. portion of TFL 23 |
1999 |
large |
District |
McGregor Analysis Group, computer generated |
| Pend O'reille landscape unit, Arrow TSA |
1999 |
small |
1 LU |
Computer generated |
| TFL 03 (S.F.P.) |
1997 |
medium |
whole TFL |
FSOS derived |
| TFL 14 (Crestbrook F.P.) |
~1994 |
medium |
whole TFL |
Licensee data |
| TFL 23 (Pope & Talbot) |
1998 |
large |
whole TFL |
Licensee data |
| EFMPP Project, Invermere TSA |
1998 |
large |
|
Multiple types of blocking |
| Arrow TSA - 4 LU's |
1997 |
medium |
4 LU's |
Hand blocked |
| Golden TSA |
1995-1998 |
large |
whole TSA |
Hand blocked |
| Revelstoke District, TFL 55, 66 |
1991-1996 |
large |
small TSA & several small TFL's |
Hand blocked |
| Chetwynd |
2000 |
|
19228 (ha's) |
|
| LU #6 (Kootenay Lake F.D.) |
2000 |
small |
|
|
| Penfold LU |
|
small |
|
|
| Sisters LU |
|
medium |
|
|
| Elphinstone LU |
|
medium |
|
|
| Caribou |
|
|
|
|
| Lignum -- William's Lake areas |
|
medium |
|
|
| Lignum -- 100 Mile House |
|
medium |
|
|
| Grid Creek |
|
small |
test landscape |
computer generated landscape of square
cells for testing |
| TFL 6 |
|
|
|
|
| Hardwick Island |
|
small |
small island |
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Notes:
The TFL03 data is an 'ATLAS-like'
database, created by Hugh Hamilton Ltd. (North Vancouver) funded
by Slocan Forest Products.
TFL 14 & TFL 23 are being reblocked
and re-modelled in 2001 as part of the spatial analysis of the Kootenay
Boundary Higher Level Plan, a joint government and industry project.
The TFL 14 database is a block map
database, but hasn't been used for spatially explicit analysis through
space and time.
The TFL 23 database is a computer
generated blocking exercise, done by Timberline (Victoria) which
is attempting to create a 20 Year Plan for the TFL.
The rest of the databases, being
most of the available data in NFR, are from the ATLAS / SIMFOR Project.
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