FOREST OPERATIONS INVENTORY

DEFINITIONS/CODES

ATTRIBUTE NAME DATA TYPE

DEFINITION

CODES

FOI Unit ID
(Subj_FOI)
A4 Address to database  
Resource Area
(RA)
A2 Resource Area alphabetic abbreviation. Salem
CA Cascades
MP Marys Peak
TL Tillamook

Eugene
CR Coast Range
MC McKenzie
SV South Valley

Coos Bay
UM Umpqua
MY Myrtlewood

Roseburg
SW Swiftwater
SR South River

Medford
AS Ashland
BF Butte Falls
GL Glendale
GP Grants Pass

Lakeview
KF Klamath Falls

Sustained Yield Unit
(SYU)
A3 Sustained Yield Unit Number Salem
11 Columbia
17 Alsea-Rickreall
14 Clackamas-Molalla
18 Santiam

Eugene
23 Upper Willamette
24 Siuslaw

Coos Bay
45 South Coast

Roseburg
35 Douglas
34 South Umpqua

Medford
51 Josephine
52 Jackson
53 Klamath - West

Lakeview
83 Klamath - East
County
(GF^)
A2 County numeric code 03 BENTON
05 CLACKAMAS
07 CLATSOP
09 COLUMBIA
11 COOS
15 CURRY
19 DOUGLAS
29 JACKSON
33 JOSEPHINE
35 KLAMATH
39 LANE
41 LINCOLN
43 LINN
47 MARION
51 MULTNOMAH
53 POLK
57 TILLAMOOK
67 WASHINGTON
71 YAMHILL
100 year site class
(LC)
A1 The one digit site class uses the appropriate site index/class tables for the dominant species in the stand.  
100 year site table A1 100 year site table Code Site Index Table

D = Douglas-fir: McArdle, Bulletin 201, Oct 1949

C = Douglas-fir: Curtis et. al., over 2500 feet in Cascades

K = Douglas-fir: King, Weyerhaeuser

T = Douglas-fir: Hann & Scrivani for SW Oregon

U = Ponderosa pine : Hann & Scrivani for SW Oregon

G = Englemann spruce

O = Western larch

A = Red cedar

F = White fir/ Grand fir

L = Lodgepole pine

P = Ponderosa, Jeffery and Sugar pine

S = Sitka spruce

H = Western hemlock and Mt. hemlock

W = Western white pine

R = Young growth redwood

E = Red alder

N = No Site Index Table Required

50 year site
class

(IZ)
A1 The 1-digit site class uses the appropriate site index/class tables for the dominant species in the stand.  
50 year site
table

(IX)
A1 50 year site table Code Site Index Table

D = Douglas-fir : McArdle, Bulletin 201, Oct 1949

C = Douglas-fir : Curtis et. al., over 2500 feet in Cascades

K = Douglas-fir : King, Weyerhaeuser

T = Douglas-fir : Hann & Scrivani for SW Oregon

U = Ponderosa pine : Hann & Scrivani for SW Oregon

G = Englemann spruce

O = Western larch

A = Red cedar

F = White fir/ Grand fir

L = Lodgepole pine

P = Ponderosa, Jeffery and Sugar pine

S = Sitka spruce

H = Western hemlock and Mt. hemlock

W = Western white pine

R = Young growth redwood

E = Red alder

N = No Site Index Table Required

Birthdate year
(DK)
A4 Overstory year of origin  
CFI Strata
Code

(CF^)
A2 CFI Strata Code Local Standards, Variable
Denudation Cause
(JG)
A1 Harvest Type X - Timber Harvest-Initial clear-cut.

Y - Timber Harvest-Defacto clear-cut--The clear cutting of previous shelterwood
      cuts (old three stage cuts). Also when the Overstory Removal is not successful.

R - Timber Harvest-Regeneration Cut (First cut of a two stage shelterwood or the
      second cut of the old three stage shelterwood). These cuts are generally followed
      with an Overstory Removal within 3-5 years or when the understory is stocked.

O - Timber Harvest-Overstory Removal-Successful harvest.

F - Fire (No Harvest).

I - Insects (No Harvest).

D- Disease (No Harvest).

A - Animals (No Harvest).

U - Unknown

C - Conversion of a Brushfield or Hardwood Unit to Conifer

Denudation date
(JL)
D Harvest Date  
District
(KK)
A10 District Code Salem - OR080

Eugene - OR090

Coos Bay - OR120

Roseburg - OR100

Medford - OR110

Lakeview - OR010

Dominant Species Code (LF) A2 Dominant Species Code Code Douglas-fir redwood
D Douglas-fir
BD Bigcone Douglas-fir
R Redwood old growth
RY Redwood young growth
GS Giant Sequoia

Codes Pines
W White pine (as a type group)
P Ponderosa pine
JP Jeffery pine
SP Sugar pine
WP Western white pine
LP Lodgepole pine (or shore pine)
CP Coulter pine
DP Digger pine
KP Knobcone pine
WB Whitebark pine
LM Limber pine
BP Bishop pine
BR Bristlecone pine
MP Monterey pine
FP Foxtail pine
PJ Ponderosa-Jeffrey pine type

Codes True firs
WG White fir-grand fir
WF White fir
CF California red fir
SF Shasta fir
GF Grand fir
BF Bristlecone fir
A Pacific silver fir
NF Noble fir
AF Subalpine fir
FM True fir-mountain hemlock type

Codes Spruce-hemlocks
ES Englemann spruce
S Sitka spruce
BS Brewer spruce (weeping spruce)
MH Mountain hemlock
H Western hemlock

Code Cedar Cypress-larch
C Cedars (as a type group)
IC Incense-cedar
CY Cypress
YC Alaska-cedar
PC Port-Orford-cedar
RC Western red cedar
WL Western larch
SL Subalpine larch

Code Hardwoods
HD Hardwoods (as a type group)
RA Red alder
WA White alder
QA Quaking aspen
OA Oregon ash
B Western paper birch
BC Black cottonwood
M Big leaf maple
CO California black oak
LO California live oak
WO Oregon white oak
IO Interior live oak
E Eucalyptus
TO Tanoak
MY Oregon myrtle
GC Golden chinkapin
MA Pacific madrone
CA Black cottonwood-quaking aspen
Commercial nonstocked (stocking less than 10 % with cover condition of X)
CN Commercial conifers nonstocked
HN Commercial hardwoods nonstocked

Noncommercial Species
NC Noncommercial conifers as a group
J All juniper
CT California torreya (nutmeg)
PI Pinyon pine
PY Pacific yew

SA Subalpine pine (non merch. Stands above commercial forest zone)
OH All other hardwoods
NH Noncommercial hardwoods as a group
CL Canyon live oak
PD Pacific dogwood
CS California Sycamore
WI Willow
AP Apple
CH Cherry
NW Hawthorn (Crataegus)
OM Oak-madrone

Existing Stand Condition (ESC) A3 Existing Stand Condition Local Standards, Variable
Harvest Acres
(YR)
A10 Harvest Acres  
Harvest Contract FY
(YY)
A4 Harvest Contract FY  
Harvest Contract Number (PQ) A10 Harvest Contract Number  
Harvest Type
(PY)
A10 Harvest Type  
Logging Unit Number (VC) A10 Logging Unit Number  
MBF Cut Per Acre
(MV)
A10 MBF (1000 Board Feet) Cut Per Acre  
Overstory Secondary Dominant Species Code (LW) A2 Overstory Secondary Dominant Species Code Code Douglas-fir redwood
D Douglas-fir
BD Bigcone Douglas-fir
R Redwood old growth
RY Redwood young growth
GS Giant Sequoia

Codes Pines
W White pine (as a type group)

Code Cedar Cypress-larch
C Cedars (as a type group)
IC Incense-cedar
CY Cypress
YC Alaska-cedar
PC Port-Orford-cedar
RC Western red cedar
WL Western larch YC
SL Subalpine larch

Overstory Secondary Dominant Species Size Code (LG) A1 Overstory Secondary Dominant Species Size Code Code Stand Size Classes
1. Seedling and saplings (0-5 inches DBH)
2. Pole timber (5-11 inches DBH)
3. Small sawtimber (11-21 inches DBH)
4. Large sawtimber (21+inches DBH)
5. Large old growth Douglas-fir (21+inches DBH), usually over 300 years old and
    of such high quality to command a premium price even in a depressed market.
Ten Year Age Class Code (IR^) A3 This is the ten year age class that the stand will be managed and covers a 10 year range except age 5. Example-->
age 0 is zero.

Age 5 is 1-5. Age 10 will range from age 6-15. Age 20 will range from 16-25.

 
Timber Sale Name
(AX)
A30 Timber Sale Name  
Township and Range
(Township and Range)
A10 Township and Range  
Understory Birthdate Year (ZY^) A4 Understory year of origin  
Understory Dominant Species Code (ZS) A2 Understory Dominant Species Code Code Douglas-fir redwood
D Douglas-fir
BD Bigcone Douglas-fir
R Redwood old growth
RY Redwood young growth
GS Giant Sequoia

Code Pines
W White pine (as a type group)
P Ponderosa pine
JP Jeffery pine
SP Sugar pine
WP Western white pine
LP Lodgepole pine (or shore pine)
CP Coulter pine
DP Digger pine
KP Knobcone pine
WB Whitebark pine
LM Limber pine
BP Bishop pine
BR Bristlecone pine
MP Monterey pine
FP Foxtail pine
PJ Ponderosa-Jeffrey pine type

Code True firs
WG White fir-grand fir
WF White fir
CF California red fir
SF Shasta fir
GF Grand fir
BF Bristlecone fir
A Pacific silver fir
NF Noble fir
AF Subalpine fir
FM True fir-mountain hemlock type

Code Spruce-hemlocks
ES Englemann spruce
S Sitka spruce
BS Brewer spruce (weeping spruce)
MH Mountain hemlock
H Western hemlocks

Code Cedar Cypress-larch
C Cedars (as a type group)
IC Incense-cedar
CY Cypress
YC Alaska-cedar
PC Port-Orford-cedar
RC Western red cedar
WL Western larch
SL Subalpine larch

Code Hardwoods
HD Hardwoods (as a type group)
RA Red alder
WA White alder
QA Quaking aspen
OA Oregon ash
B Western paper birch
BC Black cottonwood
M Big leaf maple
CO California black oak
LO California live oak
WO Oregon white oak
IO Interior live oak
E Eucalyptus
TO Tanoak
MY Oregon myrtle
GC Golden chinkapin
MA Pacific madrone
CA Black cottonwood-quaking aspen
Commercial nonstocked (stocking less than 10 % with cover condition of X)
CN Commercial conifers nonstocked
HN Commercial hardwoods nonstocked

Understory Secondary Dominant Species Code (ZD) A2 Understory Secondary Dominant Species Code Code Douglas-fir redwood
D Douglas-fir
BD Bigcone Douglas-fir
R Redwood old growth
RY Redwood young growth
GS Giant Sequoia

Code Pines
W White pine (as a type group)
P Ponderosa pine
JP Jeffery pine
SP Sugar pine
WP Western white pine
LP Lodgepole pine (or shore pine)

Code Cedar Cypress-larch
C Cedars (as a type group)
IC Incense-cedar
CY Cypress
PC Port-Orford-cedar
RC Western red cedar
WL Western larch
SL Subalpine larch

Code Hardwoods
HD Hardwoods (as a type group)
RA Red alder
WA White alder

Understory Secondary Dominant Species Size Code (ZH) A1 Understory Secondary Dominant Species Size Code Code Stand Size Classes
1. Seedling and saplings (0-5 inches DBH)
2. Pole timber (5-11 inches DBH)
3. Small sawtimber (11-21 inches DBH)
4. Large sawtimber (21+inches DBH)
Understory Stocking Class Code (ZJ^) A1 Understory Stocking Class Code
Pole Timber and Sawtimber Stands Seedling and Sapling Stands

Density Crown closure or Well distributed term % normal BA or Vol. Stems per acre.

1. Non-stocked 0-9% 0-30
2. Poorly stocked 10-39% Below<100-150>
3. Medium stocked 40-69% minimum
4. Well stocked 70-100% Target plus
Yarding Date (PW) D Yarding Date  
Dominant Species Size Code (LG) A1 Dominant Species Size Code Code Stand Size Classes
1. Seedling and saplings (0-5 inches DBH)
2. Pole timber (5-11 inches DBH)
3. Small sawtimber (11-21 inches DBH)
4. Large sawtimber (21+inches DBH)
5. Large old growth Douglas-fir (21+inches DBH, usually over 300 years old and of such high quality to command a premium price even in a depressed market.
Entire Symbol (ES^) A35 This is a summary string of timber type data. It is one total field. It contains the cover condition, overstory dominant and secondary species, size, stocking class, Birthdate, etc.  
Stocking Class code (SEC) A1 Stocking Class code
Pole Timber and Sawtimber Stands Seedling and Sapling Stands

Density Crown closure or Well distributed term % normal BA or Vol. Stems per acre.

1. Non-stocked 0-9% 0-30
2. Poorly stocked 10-39% Below<100-150>
3. Medium stocked 40-69% minimum
4. Well stocked 70-100% Target plus
Understory Dominant Species Size Code (ZD) A1 Understory Dominant Species Size Code Code Stand Size Classes
1. Seedling and saplings (0-5 inches DBH)
2. Pole timber (5-11 inches DBH)
3. Small sawtimber (11-21 inches DBH)
4. Large sawtimber (21+inches DBH)
5. Large old growth Douglas-fir (21+inches DBH, usually over 300 years old and of
    such high quality to command a premium price even in a depressed market.
Cover Condition Code (GK) A2 Cover Condition Code Codes
1. Commercial forest lands

a. Nonstocked areas: Show with initial year of condition as Birthdate

ZZ No past management of stand

b. Nonstocked areas: Show with initial year of condition as Birthdate

X Recent clear-cut area, nonstocked, cut during the 5 years
    prior to survey date; and also sold tracts with estimated
    future cut date.

Y Defacto clear-cut area, nonstocked, cut during the 5 years
    prior to survey date.

BL All backlog units, regardless of source

XO Old clear-cut area, nonstocked, cut more than 5 years prior
    to survey date.

BC Old clear-cut area, nonstocked, cut more than 5 years prior
    to survey date that is now a brushfield conversion unit.

F Area deforested by fire, nonstocked

I Area deforested by insects, nonstocked

WT Area deforested by wind, nonstocked.

c. Restocked areas:

PL Planted area with satisfactory stocking.

S Seeded area (manual or aerial) with satisfactory stocking.

N Naturally restocked with satisfactory stocking.

O Overstory removed

d. Other:

R Residual stand after partial cutting of mature stand,
    shelterwood, tree, etc.

HC Hardwood stands convertible to confer types.

HN Hardwood stands not convertible to conifer stands, and
    should be managed for hardwood species.

2. Nonforest Lands and Vegetation:

NG Natural grass not part of an operating farm.

NB Brush areas, no timber types.

NA Agriculture, crop, pasture, and range.

NW Water and marsh lands.

NH Roads and highways and supporting facilities such as rockstockpiles,
   and BPR maintenance sheds, etc.

NU Barren or nonforestable land due to utility corridors, etc.

NR Barren land due to rock outcrops (non-commercial rocky).

NO Nonvegetative land due to other cultural developments.

3. Non-commercial forest land:

LS Low site lands

NC Non-commercial lands