Package net.simplace.sim.components.crop.heatstress

Class HeatStressOnLeafSenescence

java.lang.Object

net.simplace.sim.model.FWSimComponent

net.simplace.sim.components.crop.heatstress.HeatStressOnLeafSenescence

All Implemented Interfaces:

net.simplace.sim.util.FWSimFieldContainer

public class HeatStressOnLeafSenescence
extends net.simplace.sim.model.FWSimComponent

Calculates the effect of heat stress on leaf senescence .

When maximum temperature exceeds a threshold, leaf senescence increases. This module calculates the leaf senescence increase factor that can be used by biomass modules to adjust the leaf senescence rate.

\[ \begin{eqnarray} F_{heat}(T_{max},DVS) & = & \begin{cases} max(0,m\cdot (T_{max} - T_{C}) + F_{TC}) & \text{if} & T_{max} > T_C \quad \text{and} \quad DVS > DVS_C\\ 1 &\text{else} & \end{cases} \end{eqnarray} \] where \(F_{heat}\) is the calculated senescence factor dependend on the daily maximum temperature \(T_{max}\) and actual development stage \(DVS\), \(DVS_C\) is the critical dev stage, \(T_C\) is the critical temperature, \(F_{TC}\) the factor at the critical temperature and \(m\) the slope of the factor increment by temperature. With default values \(T_C = 34, m=0.5, F_{TC}=3\) the formula is equivalent to the formula in the referenced paper (A): \(F_{heat} = 4 - (1-(T_{max} -34°)/2)\)

References:

(A) Asseng, S.; Foster, I.; Turner N. C: The impact of temperature variability on wheat yields

Author:

Gunther Krauss, Ehsan Eyshi Rezaei "eeyshire@uni-bonn.de"

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	cDevStageCritical	development stage when heat stress on senescence starts	DOUBLE	1	-	-	1.0
constant	cFactorAtTempCritical	leaf senescence factor when maximum temperature equals critical temperature	DOUBLE	1	-	-	3.0
constant	cFactorSlope	increment of leaf senescence factor per degree Celsius	DOUBLE	°C-1	-	-	0.5
constant	cTempCritical	temperature threshold when heat stress on leaf senescence begins	DOUBLE	°C	-	-	34.0
input	iDevStage	Development stage	DOUBLE	1	0.0	-	0.0
input	iTMax	Daily maximum temperature	DOUBLE	°C	-	-	0.0
out	LeafSenescenceFactor	leaf senescence factor due to heat stress	DOUBLE	1	-	-	1.0

Nested Class Summary

Nested classes/interfaces inherited from class net.simplace.sim.model.FWSimComponent

net.simplace.sim.model.FWSimComponent.TEST_STATE

Field Summary

Fields inherited from class net.simplace.sim.model.FWSimComponent

iFieldMap, iFrequence, iInputMap, iJexlRule, iMasterComponentGroup, iName, iOrderNumber, isComponentGroup, iSimComponentElement, iSimModel, iVarMap

Constructor Summary

Constructors

Constructor	Description
HeatStressOnLeafSenescence()	Empty constructor used by class.forName()
HeatStressOnLeafSenescence(String aName, HashMap<String,net.simplace.sim.util.FWSimVariable<?>> aFieldMap, HashMap<String,String> aInputMap, org.jdom2.Element aSimComponentElement, net.simplace.sim.util.FWSimVarMap aVarMap, int aOrderNumber)

Method Summary

Modifier and Type	Method	Description
protected net.simplace.sim.model.FWSimComponent	clone(net.simplace.sim.util.FWSimVarMap aVarMap)	creates a clone from this SimComponent for use in other threads
HashMap<String,net.simplace.sim.util.FWSimVariable<?>>	createVariables()
HashMap<String,net.simplace.sim.util.FWSimVariable<?>>	fillTestVariables(int aParamIndex, net.simplace.sim.model.FWSimComponent.TEST_STATE aDefineOrCheck)	called for single component test to check the components algorithm.
protected void	init()
protected void	process()

Methods inherited from class net.simplace.sim.model.FWSimComponent

addVariable, bind, checkCondition, createSimComponent, createSimComponent, createSimComponent, createSimComponent, doProcess, getConstantVariables, getContentType, getCreateFormXML, getDescription, getEditFormXML, getFieldMap, getFrequence, getFrequenceRuleScript, getInputs, getInputVariables, getMasterComponentGroup, getName, getOrderNumber, getOutputVariables, getVariable, getVariableField, getVarMap, initialize, isConditionCheck, isVariableAvailable, performLinks, performLinks, readInputs, removeVariable, reset, runComponentTest, setVariablesDefault, toComponentLinkingXML, toDocXML, toGroupXML, toOutputDefinitionXML, toResourcesDataXML, toResourcesDefinitionXML, toString, toXML, writeVarInfos

Methods inherited from class java.lang.Object

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

Constructor Details

HeatStressOnLeafSenescence

public HeatStressOnLeafSenescence(String aName,
 HashMap<String,net.simplace.sim.util.FWSimVariable<?>> aFieldMap,
 HashMap<String,String> aInputMap,
 org.jdom2.Element aSimComponentElement,
 net.simplace.sim.util.FWSimVarMap aVarMap,
 int aOrderNumber)

Parameters:

aName -

aFieldMap -

aInputMap -

aSimComponentElement -

aVarMap -

aOrderNumber -

HeatStressOnLeafSenescence

public HeatStressOnLeafSenescence()

Empty constructor used by class.forName()

Method Details

createVariables

public HashMap<String,net.simplace.sim.util.FWSimVariable<?>> createVariables()

Specified by:

createVariables in interface net.simplace.sim.util.FWSimFieldContainer

Specified by:

createVariables in class net.simplace.sim.model.FWSimComponent

See Also:

• FWSimComponent.createVariables()

init

protected void init()

Specified by:

init in class net.simplace.sim.model.FWSimComponent

See Also:

• FWSimComponent.init()

process

protected void process()

Specified by:

process in class net.simplace.sim.model.FWSimComponent

See Also:

• FWSimComponent.process()

fillTestVariables

public HashMap<String,net.simplace.sim.util.FWSimVariable<?>> fillTestVariables(int aParamIndex,
 net.simplace.sim.model.FWSimComponent.TEST_STATE aDefineOrCheck)

called for single component test to check the components algorithm.

Specified by:

fillTestVariables in class net.simplace.sim.model.FWSimComponent

See Also:

• net.simplace.sim.util.FWSimFieldContainer#fillTestVariables(int aParamIndex, TEST_STATE aDefineOrCheck)

clone

protected net.simplace.sim.model.FWSimComponent clone(net.simplace.sim.util.FWSimVarMap aVarMap)

creates a clone from this SimComponent for use in other threads

Specified by:

clone in class net.simplace.sim.model.FWSimComponent

See Also:

• FWSimComponent.clone(net.simplace.sim.util.FWSimVarMap)