Table 2 Stand variables from national forest inventories that are relevant in fuel modelling

TIMBER AND CORK PRODUCTION

Dominant Species

adim

Plot

x

x*

x*

x*

*Dominant tree and shrub species (cover and height by species)

x

x

x

x

x

x

Diameter at breast height

cm

Tree

x

x

x

x

x

x

x

x

x

x

Total height

m

Tree

x

x

x

x

x

x

x

x

x

x

Bark thickness

mm

Tree

x

x

x*

In sample trees

*Cork trees since 2017

x*

*only for some plots of cork trees

FIRE

Litter cover

%

Plot

x

x

x

Since 2002

x

x

x

Litter thickness

cm

Plot

x

x

x

x

x

x

Crown base height

m

Tree

x

x

x

In sample trees

x

x

x

Damage by fire by tree (degree; part of the tree)

%; tree partition

Tree

x

x

x

x

x

Only information regarding presence / absence of fire damage by tree

Fuel model

Categorical

Plot

x

x

Categorical 1-13

x

x

Categorical 1-12

BIODIVERSITY

Cover by species (trees, shrubs and herbaceous)

%

Species

x*

x*

* Herbaceous species not identified

x

x

x

Tree, shrubs and herbaceous

Cover by height class (< 2m; understory vegetation)

%

Species

x⁺

x*

x*

⁺ Height from all trees and average height of main shrub taxa - strata could be done; * By strata but also by species as NFI2

x

x

x

Crown diameter

cm

Tree

x

Dead wood

cm; mm; decay class 1-5

Component, species

x⁺

x*

x*

⁺ Dead trees that were alive in the previous inventory; * All dead wood components by species, decay class and also dimensions

x*

x*

*No decay classes