APPEND_I.pdf

Data Dictionary for CoverType

CoverType. The CoverType feature class is updated for new stands created through timber sales as well as naturally occurring landslides, windthrow, and so forth. Units identified in the sale administrator’s monthly report as having been yarded are updated on this layer. Reserve (deferred) areas that fall on the boundary are not mapped as individual polygons with unique stand numbers and on this layer. CoverType displays the

“net” treated area within the harvest unit.

ITEM NAME DataType Length Precision

OBJECTID Object ID 4 10

TM_COMPARTMENT Long 4 10

STAND Long 4 10

FCT String 1 0

NFCON String 1 0

FPROD String 1 0

FTYPE String 1 0

CSC String 1 0

SSIZEC String 1 0

VOLC String 1 0

TTSOURCE String 1 0

DATE_ORIGIN Long 4 10

STAND_ORIGIN String 1 0

OWNERSHIP String 1 0

RESERVE_AMOUNT Short 2 4

RESERVE_UOM String 1 0

TM_COMPARTMENT TM_Compartment made up of VCU, sub- VCU and compartment number

00100 to

86409

Tm_compartment 00100 to

Tm_compartment 86409

STAND Unique stand number within TM- Compartment

00001 to

99999

Stand Number 00001 to

Stand Number 99999

FCT Forest Cover Type

F

N

Forested cover

Non-forested cover

NFCON

Non-Forest Condition Class

A

B

C

D

F

G

Nonforest Condition is Alder Brush

Nonforest Condition Brush Census Freshwater

Nonforest Condition Sand Dunes

Nonforest Condition is River Fill Nonforest Condition is Natural Grassland

H I L M N O P R S T U W

Nonforest Condition is Alpine Nonforest Condition is Ice/Snow Field Nonforest Condition is Uplifted Beach Nonforest Condition is Muskeg- Meadow Noncensus Freshwater Nonforest Condition is Other Nonforest Condition is Borrow Pit Nonforest Condition is Rock Nonforest Condition is Recurrent Slide Nonforest Condition is Willow Nonforest Condition is Urban/agricultural Nonforest Condition is Mass Wasting

FPROD

Forest Productivity

G

H

L

M

R

S

T

Productivity Greater Than 20 Cu. ft/acre

Low Productivity Due to Alder

Low Productivity as a Glacier

Low Productivity Due to High Elevation

Low Productivity Due to Low Site Index

Low Productivity Due to Muskeg Low Productivity Due to Rock Cover

Low Productivity in Recurrent Slide Zone

Low Productivity Due to Willow

NULL (FCT = 'N'). Fill with 9 for non-forest condition. Leaving the field blank would result in questions as to whether the field was blank by intention or by omission.

FTYPE Forest Type

Species canopy composition GT 50%

A

B

C

H

L

M

O

P Q

S

W

X

Z

Red Alder

Birch

Cedar

Hemlock

Lodgepole Pine

Black Spruce

OTHER SPECIES

Black Cottonwood (poplar) Aspen

Spruce

White Spruce

Hemlock-Spruce (SS between 30-49% canopy composition) Cottonwood with Sitka Spruce Understory

CSC

Current Stocked Condition

B

F

G

I N

O

R

S

T

U

W

X

Nonstocked due to Alder

Nonstocked due to Brabazon Nonstocked due to Fire

Nonstocked due to Water or Glacier Action

Nonstocked due to Insects

Nonstocked due to Logging GT or EQ 5 Years

Nonstocked due to Other Causes

Nonstocked due to River fill Nonstocked due to Slides

Nonstocked due to Willow

Nonstocked due to Beach Uplifting

Nonstocked due to Wind throw

Nonstocked due to Logging LT 5 Years

Poorly Stocked 10-39 % of the crown closure

Medium Stocked 40-69% of the crown closure Well Stocked 70-100% of the crown closure

Non-forested

SSIZEC Stand Size Class

Seedling or Saplings; Trees under 5: Dbh

Poletimber; Trees w/Dbh between 5" and 9"

Young-growth Sawtimber; 9"+, but not over 150 yrs.

Old-growth Sawtimber; 9", and over 150 yrs.

VOLC

Volume Class

0 to 8 MBF/acre

8 to 20 MBF/acre

20 to 30 MBF/acre

30 to 50 MBF/acre

More than 50 MBF/acre

TTSOURCE Source of Arc on CoverType layer

S

T

Code came from Stand Exam Code came from TM Inventory

DATE_ORIGIN

Stand origination date

From ActivityPolygons YYYYMMDD format Eg- 20051125

a) S

T

A

N

D_

O

RI

GI

N

Origin of the Stand

A

F

G

H

L

S

U

W

Alluvial outwash Origin

Fire Origin

Glacial Retreat (recent) Origin

Harvest Origin Landslide Origin Small Gap Origin (old growth stage) Unknown Origin

Windthrow Origin Null (lakes, rockpits, non-forested, etc.)

OWNERSHIP Ownership -general

F

N

National Forest System Lands

Non-national Forest System Lands

RESERVE-AMOUNT * amount reserves left in the unit will be determined by unit of measure to

0-999 valid codes; 1-100 (percent) if using B as UOM; 1-500 (trees/acre) if using T as UOM;

use 999 only if reserves are present in an unknown amount

RESERVE-UOM * Reserve amount Unit of Measure

T

B

Trees/acre or

% Basal area

*The same unit of measure is used for all sub-units within the harvest area. In order to calculate the percentage reserved within the unit as a whole, the original basal area or trees per acre must be known from stand examination and or timber cruise information. These fields should not be used to determine if TLMP

Revision standards and guidelines for goshawk, marten, and so forth, are being achieved. Each polygon sub-unit will have a different reserve amount if reserves vary by sub-unit.