ControlTable Treatment Model

In the treatment model control table you can configure how forest management treatments are simulated.

Regeneration - model

Allows you to control how forest regenerations are simulated, regarding planting, natural regeneration using seed trees, and sowing.

RegenerationModelType

Simulation generates the new forest by simulation.

Database generates the new forest by imputation of plot data from a database.

Regeneration - settings

DeterministicSimulation

True applies deterministic regeneration model components, False do not.

[Is this really applicable in Database as RegenerationModelType?]

HeightTargetRegenerationModels

Defines the arithmetic mean height in meters at stand-level[?] when trees are initiated instead of saplings[?], for natural regeneration, sowing, spruce plantation, pine plantation, and contorta plantation, respectively.

NumberOfSeedTrees (only if Database is selected)

Defines the number of seed trees per hectare applied in natural regeneration.

RegenerationSettings

Defines the number of seedlings per hectare applied in plantation (or in sowing, or in natural regeneration using seed trees, respectively) following soil scarification (or controlled burning, or no preparation, respectively), regarding the site index at plot-level[?].

RegenerationYear

Defines the number of years from time of final felling to time of regeneration applied in simulations of planting and sowing[?].

SoilPreparationYear

Defines the number of years before regeneration when soil scarification is simulated.

Cleaning - model

Allows you to control how cleanings, a.k.a. pre-commercial thinnings, are simulated.

CleaningModelType

HeurekaCleaning defines one model of tree removal, actually cutting of saplings, in the cleaning simulations.

HuginCleaning defines another model of tree removal, almost as accurate as the above, in the cleaning simulations.

DeterministicCleaning

True applies deterministic cleaning model components, False do not.

Cleaning - settings

CleaningDeciduous

Alfa and Beta are coefficients in function calculating the priority factor of deciduous tree species. Deciduous trees, i.e. all broadleaves, will then be removed[or retained?] in cleanings prior to coniferuous trees.

CleaningPine

Alfa and Beta are coefficients in function calculating the priority factor of pine trees. Pines, i.e. Pinus sylvestris, will then be removed[or retained?] in cleanings prior to deciduous and other coniferuous trees.

CleaningSpruce

Alfa and Beta are coefficients in function calculating the priority factor of spruce trees. Spruces, i.e. Picea abies, will then be removed[or retained?] in cleanings prior to deciduous and other coniferuous trees.

[How should the user select the above coefficients?]

MeanHeightCleaning

Min defines the minimum arithmetic mean height in meters at stand-level when cleaning is simulated.

Max defines the maximum arithmetic mean height in meters at stand-level when cleaning is simulated.

MinStemsCleaned

Defines the minimum number of stems per hectare to be cut in cleanings. No cuttings will be simulated if less stems are available in next cleaning.

Fertilization

Allows you to control how fertilizations are simulated.

FertilizerAmount

Defines the amount of fertilizer in kilogram per hectare used in the simulations.

FertilizerSubstance

AN defines that ammonium nitrate is the active substance in fertilizations.

UREA defines that urea, i.e. ammoniac[?], is the active substance in fertilizations.

MaxAnnualGrowth

Defines the maximum annual growth, in m³sk/ha, if fertilization of the stand is to be simulated.

MeanHeightLimitFertilization

Defines the minimum average height (basal area weighted) in meters if fertilization of the stand is to be simulated.

MinConiferProportion

Defines the minimum proportion of conifers, in percentage of basal area, if fertilization of the stand is to be simulated.

SiteIndex

Min defines the minimum site index value in meters if fertilization of the stand is to be simulated.

Max defines the maximum site index value in meters if fertilization of the stand is to be simulated.

Intensive Fertilization

HeightIntensiveFertilization

Min defines the minimum average height in meters if fertilization is to be initiated in the young stand.

Max defines the maximum average height in meters if fertilization is to be initiated in the young stand.

MinSpruceProportionIntensiveFertilization

Defines the minimum proportion of spruce, in percentage of basal area (or of stems per hectare), if fertilization is to be initiated in the young stand.

MinStemsIntensiveFertilization

Defines the minimum number of stems per hectare if fertilization is to be initiated in the young stand.

Thinning - model

Allows you to control how thinnings are simulated.

ThinningModelType

Hugin defines one model of tree selection in the thinning simulations.

LOEriksson defines another model of tree selection in the thinning simulations.

Thinning - settings

BasalAreaCalculatorCoefficients

Pine include the settings for basal area development of Pinus sylvestris, applied when thinning guides are used. Set the constant and the coefficients (of site index and dominant height, respectively) used in calculations of the tree species' basal area, before and after thinning.

Spruce include the settings for basal area development of Picea abies, applied when thinning guides are used. Set the constant and the coefficients (of site index and dominant height, respectively) used in calculations of the tree species' basal area, before and after thinning.

Deciduous include the settings for basal area development of deciduous trees, applied when thinning guides are used. Set the constant and the coefficients (of site index and dominant height, respectively) used in calculations of the tree species' basal area, before and after thinning.

DistanceBetweenStripRoads

Defines the distance in meters between the centre of adjacent stip roads, used in simulation of the first thinning in a stand.

HarvestStriproads

True simulates the cutting of strip roads if a stand is thinned for the first time, False do not.

MaxThinningIntensity

Defines the maximum thinning intensity, in percentage of basal area, including any cutting of strip roads.

MinDiameterThinning

Defines the minimum diameter, in centimeters, of trees to be cut in thinnings.

RelativeDiameter (only if LOEriksson is selected)

First defines the relationship between the mean diameters of trees cut and trees retained in first thinning of a stand, expressed in percentage.

Second defines the relationship between the mean diameters of trees cut and trees retained in second and following thinnings of a stand, expressed in percentage.

StripRoadWidth

Defines the width of strip roads in meters.

ThinningControlParameter (only if Hugin is selected)

ParamDeciduousConifer defines if deciduous trees should be prioritized to be cut before coniferuous trees, expressed in value range (-1, 1).

ParamSprucePine defines if spruces should be prioritized to be cut before pines, expressed in value range (-1, 1).

ParamThinThick defines if trees with lesser diameter should be prioritized to be cut before trees with larger diameter, expressed in value range (-1, 1).

ParamWithinThin defines, among trees classified as having less diameter, if trees with lesser diameter should be prioritized to be cut before trees with larger diameter, expressed in value range (-1, 1).

ParamWithinThick defines, among trees classified as having large diameter, if trees with larger diameter should be prioritized to be cut before trees with lesser diameter, expressed in value range (-1, 1).

ThinningType

NotSpecified defines that non specified thinning types should be simulated.

StripRoad defines that thinnings with strip roads should be simulated.

StripRoadMidFieldMachine defines that thinnings with harvester able to cut all trees between strip roads should be simulated.

StripRoadMidFieldChainsaw defines that thinnings with harvester and manual labor

Tolerance (only if LOEriksson is selected)

UMax (only if LOEriksson is selected)

UMin (only if LOEriksson is selected)

VaryThinningIntensity

True , False do not.

Final felling

Allows...

MinDiameterFinalFelling

TypeOfFinalFelling

Ordinary

SeedTree

Shelterwood

Selection felling (only if Hugin is selected as thinning model)

Allows...

SelectionControlParameter

ParamDeciduousConifer

ParamSprucePine

ParamThinThick

ParamWithinThin

ParamWithinThick

Forest fuel

Allows...

Restrictions

MinSpruce

MaxDiamStump

MinDiamStump

Utilization

Top

BranchesNotTop

BranchesTop

DeadBranchesNotTop

DeadBranchesTop

NeedlesTop

NeedlesNotTop

Stump