A list of variables provided by each resource unit. These variable names are used when binding a single resource unit to a expression.
General variables
| Name | Description |
| year | current simulation year. |
Resource unit variables
| Name | Description |
| index | unique index of the resource unit. 0-based. |
| id | id of the unit provided in resource unit grid mode, or -1 otherwise |
| area | total stockable area of the resource unit (m2). The value is determined by the initial stand grid. |
| totalEffectiveArea | (0..1). intermediate variable for production calculation. |
| nitrogenAvailable | available nitrogen (kg/ha*yr) |
| soilDepth | depth of the soil (mm) |
| waterHoldingCapacity | WHC (mm) of the soil (using -4MPa as permanent wilitng point) |
| stockedArea | area covered by trees (calculation is based on 2m-pixels) (m2) |
| count | number of trees / ha |
| volume | sum of volume of the tree bole (m3) |
| totalCarbon | total living carbon (including above + belowground, trees and regeneration) kg/ha |
| avgDbh | arithmetic mean of DBH (cm) |
| avgHeight | arithmetic mean of tree height (m) |
| basalArea | total basal area of all trees (m2) |
| leafAreaIndex | total LAI (m2/m2)leaf area weighted average aging factor (0..1) |
| aging | total average aging (weighted by LAI) factor. |
| cohortCount | total number of cohorts per ha in the sapling phase. |
| saplingCount | total number of individuals in the sapling phase (>1.3m) per ha. |
| canopyConductance | LAI weighted average canopy conductance (m/s) (including the conductance of the "ground cover" layer) |
| soilC | total Carbon content (t/ha) in soil (sum of young, refractory and SOM) |
| soilN | total Nitrogen content (t/ha) in soil (sum of young, refractory and SOM) |
| snagC | total Carbon (kg/ha) present in the standing woody pools (i.e.: carbon in snag diameter classes and carbon in branch/coarse root pools) |
| meanTemp | mean annual temperature (daytime) on the resource unit (°C) |
| annualPrecip | annual precipitation (mm) on the resource unit |
| annualRad | total incoming radiation (MJ) per year |