lerfob.windstormdamagemodels.awsmodel

Class AlbrechtWindStormModel

java.lang.Object

lerfob.windstormdamagemodels.awsmodel.AWSModelCore

lerfob.windstormdamagemodels.awsmodel.AlbrechtWindStormModel

All Implemented Interfaces:

java.awt.event.ItemListener, java.util.EventListener

public class AlbrechtWindStormModel
extends AWSModelCore
implements java.awt.event.ItemListener

This class implements the equations of the different submodels that are part of Albrecht et al.'s wind storm model. This model predict an average probability of wind-induced damage without knowledge or assumption of wind storm occurrence. The wind storm occurrence is implicitly derived from the observed occurrence in the Baden-Wuerttemberg over the 1950-2005 period. IMPORTANT : This model applies to 0.25-ha plot, with regular structure and homogeneous composition.

See Also:

Albrecht, A., M. Hanewinkel, J. Bauhus, and U. Kohnle. 2010. How does silviculture affect storm damage in forests of south-western Germany? Results from empirical modeling based on long-term observations. European Journal of Forest Research.

Nested Class Summary

Nested classes/interfaces inherited from class lerfob.windstormdamagemodels.awsmodel.AWSModelCore

AWSModelCore.RandomEffectID, AWSModelCore.SubModelID

Field Summary

Fields inherited from class lerfob.windstormdamagemodels.awsmodel.AWSModelCore

isStochasticModeEnabled, RANDOM_GENERATOR

Constructor Summary

Constructors

Constructor and Description
AlbrechtWindStormModel() General constructor.

Method Summary

Modifier and Type	Method and Description
protected double	computeProbabilityOfTotalDamage(AWSTree.AWSTreeSpecies species) This method computes the probability of observing more than 75% of damage in the stand for a particular tree species.
protected double	computeProportionOfDamageIfNotTotallyDamaged(AWSTree.AWSTreeSpecies species) This method computes the damage proportion from 0 to 75% for a particular tree species.
java.util.Collection<AWSTree>	getDamagedTreesOfThisStand(AWSStand stand, AWSTreatment treatment) This method returns a collection of damaged trees.
AlbrechtWindStormModelUI	getGuiInterface() This method returns the GUI interface.
double[]	getPredictionForThisStand(AWSStand stand, AWSTreatment treatment) This method generates three predictions : 1- the probability of stand damage, 2- the probability of total damage (>75% of basal area damaged) conditional on the occurrence of stand damaged, and 3- the proportion of stand damage (<75% of basal area damaged) given that the stand is not totally damaged.
protected java.lang.Boolean	getResultForThisTree(AWSTree tree) This method provides a prediction of damage for an individual tree.
boolean	isStochasticModeEnabled()
void	itemStateChanged(java.awt.event.ItemEvent evt)
static void	main(java.lang.String[] args)
void	setStochasticModeEnabled(boolean enabled) This method makes it possible to enable the stochastic mode.
void	showInterface()

Methods inherited from class lerfob.windstormdamagemodels.awsmodel.AWSModelCore

getCutPoint, getParameters, getRandomEffect, getReferenceTables, getStand, getStandVariable, getTreatment, getTreatmentVariable, getTree, getTreeVariable, setStand, setTreatment, setTree

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AlbrechtWindStormModel

public AlbrechtWindStormModel()

General constructor.

Method Detail

setStochasticModeEnabled

public void setStochasticModeEnabled(boolean enabled)

This method makes it possible to enable the stochastic mode. BY DEFAULT, THE STOCHASTIC MODE IS DISABLED.

Parameters:

enabled -

isStochasticModeEnabled

public boolean isStochasticModeEnabled()

getPredictionForThisStand

public double[] getPredictionForThisStand(AWSStand stand,
                                          AWSTreatment treatment)
                                   throws java.lang.Exception

This method generates three predictions : 1- the probability of stand damage, 2- the probability of total damage (>75% of basal area damaged) conditional on the occurrence of stand damaged, and 3- the proportion of stand damage (<75% of basal area damaged) given that the stand is not totally damaged. NOTE: if there is no tree in this stand, the method returns an array containing null probabilities.

Parameters:

stand - a AWSStand object

treatment - a AWSTreatment object

Returns:

an array of three doubles corresponding to the above mentioned probabilities

Throws:

java.lang.Exception

getDamagedTreesOfThisStand

public java.util.Collection<AWSTree> getDamagedTreesOfThisStand(AWSStand stand,
                                                                AWSTreatment treatment)
                                                         throws java.lang.Exception

This method returns a collection of damaged trees. The probability of damage is also recorded in the tree through the registerProbability method.

Parameters:

stand - a AWSStand instance

treatment - a AWSTreatment instance

Returns:

the list of damaged trees

Throws:

java.lang.Exception

getResultForThisTree

protected java.lang.Boolean getResultForThisTree(AWSTree tree)
                                          throws java.lang.Exception

This method provides a prediction of damage for an individual tree. The method assumes the stand probabilities have been calculated prior to this.

Parameters:

tree - a AWSTree object

Returns:

a boolean (true = the tree is damaged, otherwise is false)

Throws:

java.lang.Exception

computeProbabilityOfTotalDamage

protected double computeProbabilityOfTotalDamage(AWSTree.AWSTreeSpecies species)
                                          throws java.lang.Exception

This method computes the probability of observing more than 75% of damage in the stand for a particular tree species.

Parameters:

species - a TreeSpecies enum variable

Returns:

the probability (double)

Throws:

java.lang.Exception

computeProportionOfDamageIfNotTotallyDamaged

protected double computeProportionOfDamageIfNotTotallyDamaged(AWSTree.AWSTreeSpecies species)
                                                       throws java.lang.Exception

This method computes the damage proportion from 0 to 75% for a particular tree species.

Parameters:

species - a TreeSpecies enum variable

Returns:

the probability (double)

Throws:

java.lang.Exception

getGuiInterface

public AlbrechtWindStormModelUI getGuiInterface()

This method returns the GUI interface. If the interface has not been created so far, the method creates it and sends it to the Event Dispatch Thread. The dialog pops up.

Returns:

a AlbrechtWindStormMakerUI instance

showInterface

public void showInterface()

main

public static void main(java.lang.String[] args)

itemStateChanged

public void itemStateChanged(java.awt.event.ItemEvent evt)

Specified by:

itemStateChanged in interface java.awt.event.ItemListener