Subject: AK Volume and NF Codes
Name: Robert HAvis
Date: November 22, 2005
Variants affected: AK

Description:

1) Volume equations were not being correctly mapped to species.
the same volume equation, the Eq. for the first species in
the tree list, was used for all species in the stand. This problem
was introduced during the update that converted the Tongass N.F.
to the Flewelling volume Eqs. (FVS Update Bulletin No. 596)
and has has been corrected.

2) Volume equations for the Chugach National Forest were not being
used by default. This has been corrected.

3) The volume equation developed for white spruce (Larsen and Winterberger.
PNW-RN-478) was added for use by all National Forests in R10.
              

The equation numbers used in the AK variant are summarized below.

SPECIES                     TONGASS NF        CHUGACH NF

WHITE SPRUCE (WS)           A00DVEW094        A00DVEW094
WESTERN REDCEDAR (RC)       A00F32W242        A01DEMW000
PACIFIC SILVER FIR (SF)     A00F32W263        A01DEMW000
MOUNTAIN HEMLOCK (MH)       A00F32W263        A01DEMW000
WESTERN HEMLOCK (WH)        A00F32W263        A01DEMW000
ALASKA YELLOW CEDAR (YC     A00F32W042        A01DEMW000
LODGEPOLE PINE (LP)         A00F32W263        A01DEMW000
SITKA SPRUCE (SS)           A00F32W098        A01DEMW000
SUBALPINE FIR (AF)          A00F32W263        A01DEMW000
RED ALDER (RA)              A00F32W263        A01DEMW000
BLACK COTTONWOOD (CW)       A00F32W263        A01DEMW000
OTHER HARDWOODS (OH)        A00F32W263        A16DEMW098
OTHER SOFTWOODS (OS)        A00F32W263        A16DEMW098

Impact on users: Users should obtain new executables.

Files:
ak/src/blkdat.f - added Chugach NF forest code to IFORCD array,
                  and mapped to 1 in IFORST array
ak/src/forkod.f - added code to retain Chugach KODFOR value 1004
                  modified text written to main output file
ak/src/varvol.f - added white spruce volume Eq. No. to Tongass
                  and and Chugach NFs and corrected volume Eq.
                  assignment to species logic. Removed default
                  mapping of Chugach to Tongass Eq. Nos.
base/src/revise.f
bin/makefile - added r10d2h to AK link list