Dataset: Tree-level Data Gathered Through the Forest Inventory and Analysis Program

The length (height) of the tree to the nearest foot from ground level to the highest remaining portion of the tree still present and attached to the bole.

Agent code

AZIMUTH

Board-foot-cull soundness

Breast height age

Bole Height

Tree bored code, Pacific Northwest Research Station

Aboveground carbon

Below ground carbon

Crown class code

Crown density code

Crown dieback code. A code indicating the amount of recent dead material in the upper and outer portion of the crown, estimated in percent classes. Collected for all live trees at least 5 inches DBH/DRC.

Cubic-foot-cull soundness

Crown light exposure code

A unique sequence number used to identify a tree record.

Condition class number

County code

Crown position code

Compacted crown ratio

CREATED_BY

CREATED_DATE

CREATED_IN_INSTANCE

Rotten and missing cull

Board-foot cull

Cubic-foot cull

Dead cull

Form cull

Missing top cull, field recorded

Rotten/missing cull, field recorded

Crown vigor code (sapling)

Inventory CYCLE

Damage location 1

Damage location 1, Pacific Northwest Research Station

Damage location 2

Damage location 2, Pacific Northwest Research Station

Damage Severity (1)

Damage severity (2)

Damage type (1)

Damage Type (2)

Decay code

The current diameter (in inches) of the sample tree at the point of diameter measurement. DIA is measured at either breast height (DBH) or at root collar (DRC).

DIACALC

Diameter check code

Diameter check, Pacific Northwest Research Station

Diameter height code

Horizontal distance

Damage agent 1, Pacific Northwest Research Station

Damage agent 2, Pacific Northwest Research Station

Damage agent 3, Pacific Northwest Research Station

Dry biomass of the roots. The oven-dry biomass (pounds) of the belowground portion of a tree, includes coarse roots with a root diameter ? 0.1 inch. This is a modeled estimate, calculated on live trees with a diameter of ? 1 inch and dead trees with a diameter of ? 5 inches, for both timber and wood

Dry biomass in the merchantable bole

The oven-dry biomass (pounds) of the aboveground portion, excluding foliage, of live trees with a diameter from 1 to 4.9 inches.

The oven-dry biomass (pounds) in the stump of timber species [trees where diameter is measured at breast height (DBH)] ? 5 inches in diameter.

The oven-dry biomass (pounds) in the top and branches (combined) of timber species [trees where diameter is measured at breast height (DBH)] ? 5 inches in diameter.

The oven-dry biomass (pounds) of the aboveground portion of a live or dead tree, excluding foliage, the tree tip (top of the tree above 1½ inches in diameter), and a portion of the stump from ground to diameter at root collar (DRC). Calculated for woodland species (trees where diameter is measured a

Net annual merchantable board-foot growth of a sawtimber tree on forest land

Net annual sound cubic-foot growth of a live tree on forest land

Net annual merchantable cubic-foot growth of a growing-stock tree on forest land

Board-foot volume of a sawtimber tree for mortality purposes on forest land

Sound cubic-foot volume of a tree for mortality purposes on forest land

Cubic-foot volume of a growing-stock tree for mortality purposes on forest land

Form class

Board-foot volume of a sawtimber tree for removal purposes on forest land

Sound cubic-foot volume of the tree for removal purposes on forest land

Cubic-foot volume of a growing-stock tree for removal purposes on forest land

Net annual merchantable board-foot growth of a sawtimber tree on timberland

Net annual sound cubic-foot growth of a live tree on timberland

Net annual merchantable cubic-foot growth of a growing-stock tree on timberland

Hardwood clump code

The total length (height) of a sample tree (in feet) from the ground to the tip of the apical meristem

Current height calculated

Height method code

Height to diameter measurement point

Inventory year

Mistletoe class code

Leafy mistletoe class code, Pacific Northwest Research Station

MODIFIED_BY

MODIFIED_DATE

MODIFIED_IN_INSTANCE

Board-foot volume of a sawtimber tree for mortality purposes on timberland

Mortality code

Sound cubic-foot volume of a tree on timberland for mortality purposes

Cubic-foot volume of a growing-stock tree on timberland for mortality purposes

Mortality Year

Periodic to annual growth, removal, and mortality flag

Phase 2 plot number

Plot sequence number

Previous condition class number

Previous diameter

Previous periodic prism point, tree number, Southern Research Station

Previous tree status code

Previous tree sequence number

Previous woodland stem count

Reconcile code

Board-foot volume of a sawtimber tree on timberland for removal purposes

Sound cubic-foot volume of a tree on timberland for removal purposes

Cubic-foot volume of a growing-stock tree on timberland for removal purposes

Rough cull

Salvable dead code

Sawlog height

Damage severity 1A, Pacific Northwest Research Station

Damage severity 1B, Pacific Northwest Research Station

Damage severity 1, Pacific Northwest Research Station for years 2001-2004

Damage severity 2A, Pacific Northwest Research Station starting in 2005

Damage severity 2B, Pacific Northwest Research Station starting in 2005

Damage severity 2, Pacific Northwest Research Station for years 2001-2004

Damage severity 3, Pacific Northwest Research Station for years 2001-2004

Site index for the tree

Species Code

Species group code

Standing dead code

STATE Code

STATUS Code

Tree stocking

Inventory subcycle number

Subplot number

Total age

Growth trees per acre unadjusted

Mortality trees per acre per year unadjusted

Removal trees per acre per year unadjusted

Trees per acre unadjusted

Transparency Code

Tree record number

Tree class code

Tree class code, North Central Research Station

Tree class code, Northeastern Research Station

Tree class code, Rocky Mountain Research Station

Tree class code, Southern Research Station

Tree grade code

Tree history code

Uncompacted live crown ratio

Survey unit code

Unknown damage type 1, Pacific Northwest Research Station

Unknown damage type 2, Pacific Northwest Research Station

Gross board-foot volume in the sawlog portion of a sawtimber tree

Net board-foot volume in the sawlog portion of a sawtimber tree

Gross cubic-foot volume

Net cubic-foot volume

Sound cubic-foot volume

Gross cubic-foot volume in the sawlog portion of a sawtimber tree

Net cubic-foot volume in the sawlog portion of a sawtimber tree

Woodland tree species stem count