ABE outputs

ABE provides several outputs with different spatial/temporal grain (see organizing outputs, and other iLand outputs).

Annual harvests and harvest plan on unit level.

Table Name: abeUnit The output provides planned and realized harvests on the level of planning units. Note that the planning unit area, mean age, mean volume and MAI are only updated every 10 years. Harvested timber is given as ‘realizedHarvest’, which is the sum of ‘finalHarvest’ and ‘thinningHarvest.’ The ‘salvageHarvest’ is provided extra, but already accounted for in the ‘finalHarvest’ column

caption	datatype	description
year	integer	simulation year
id	string	unique identifier of the planning unit
area	double	total area of the unit (ha)
age	double	mean stand age (area weighted) (updated every 10yrs)
U	integer	default rotation length for stands of the unit (years)
thinningIntensity	double	default thinning intensity for the unit
volume	double	mean standing volume (updated every 10yrs), m3/ha
MAI	double	mean annual increment (updated every 10yrs), m3/ha*yr
decadePlan	double	planned mean harvest per year for the decade (m3/ha*yr)
annualPlan	double	updated annual plan for the year, m3/ha*yr
runningDelta	double	current aggregated difference between planned (10yr period) and realised harvests (+decay); positive: more realized than planned harvests, m3/ha*yr
realizedHarvest	double	total harvested timber volume, m3/ha*yr
finalHarvest	double	total harvested timber of planned final harvests, m3/ha*yr
thinningHarvest	double	total harvested timber due to tending and thinning operations, m3/ha*yr
salvageHarvest	double	total harvested timber due to salvage operations , m3/ha*yr

Annual stand output (state).

Table Name: abeStand This output provides details about the forest state on stand level. The timber is provided as standing timber per hectare. The output is rather performance critical. You can use the condition XML-tag to limit the execution to certain years (e.g., mod(year,10)=1 ).

caption	datatype	description
year	integer	simulation year
unitid	string	unique identifier of the planning unit
standid	integer	unique identifier of the forest stand
initialstandid	integer	stand id if not split, stand id of the source stand after splitting a stand.
area	double	total area of the forest stand (ha)
volume	double	standing timber volume (after harvests of the year) (m3/ha)
basalarea	double	basal area (trees >4m) (m2/ha)
dbh	double	mean diameter (basal area weighted, of trees >4m) (cm)
height	double	mean stand tree height (basal area weighted, of trees >4m)(cm)
stems	double	number of trees (trees >4m) per ha
age	double	the age of the stand (years since beginning of the rotation)

Detailed annual stand output (state).

Table Name: abeStandDetail This output provides details about the forest state on species- and stand level. This output is more detailed than the abeStand output. The output is rather performance critical. You can use the condition XML-tag to limit the execution to certain years (e.g., mod(year,10)=1 ).

caption	datatype	description
year	integer	simulation year
species	string	tree species
standid	integer	unique identifier of the forest stand
basalarea	double	basal area of the species(trees >4m) (m2/ha)
relBasalarea	double	relative basal area share of the species (trees >4m) (0..1)

Annual harvests on stand level.

Table Name: abeStandRemoval This output provides details about realized timber harvests on stand level. The timber is provided as standing timber per hectare. The total harvest on the stand is the sum of thinning and final.

caption	datatype	description
year	integer	simulation year
unitid	string	unique identifier of the planning unit
standid	integer	unique identifier of the forest stand
area	double	total area of the forest stand (ha)
age	double	absolute stand age at the time of the activity (yrs)
activity	string	name of the management activity that is executed
volumeAfter	double	standing timber volume after the harvest operation (m3/ha)
volumeThinning	double	removed timber volume due to thinning, m3/ha
volumeFinal	double	removed timber volume due to final harvests (regeneration cuts), m3/ha
volumeSalvaged	double	removed timber volume due to salvaging (m3/ha)
volumeDisturbed	double	disturbed trees on the stand, m3/ha. Note: all killed trees are recorded here,also those trees that are not salvaged (due to size and other constraints)