Package net.simplace.sim.components.experimental.intercropping

Class BelowgroundAllocationFactor

java.lang.Object

net.simplace.sim.model.FWSimComponent

net.simplace.sim.components.experimental.intercropping.BelowgroundAllocationFactor

All Implemented Interfaces:

net.simplace.sim.util.FWSimFieldContainer

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

Calculates factors for below ground allocation of two crops from their root distribution.

The module uses a straigthforward approach:

• Root Length Densities (RLD) and Root Restriction Factors (RRF) are scaled according to the area covered by each crop
• Common RLD and RRF are just the sum of the scaled RLDs and RRFs
• Below ground allocation factors are proportional to the scaled RRFs

Calculation

Root Length Densities per layer $rld_{1,i}, rld_{2,i}$ and are scaled to the coresponding area fractions $a_1, a_2$ occupied by the two crops and the sum of both is calculated.

\[ rld_i = rld_{1,i} \cdot a_1 + rld_{2,i} \cdot a_2 \]

Same holds for Root Restriction Factors per Layer $rrf_{1,i}, rrf_{2,i}$ \[ rrf_i = rrf_{1,i} \cdot a_1 + rrf_{2,i} \cdot a_2 \]

The maximum rooted layer is the biggest layer number, where Root Length Density is greater than 0. \[ n_{max} = max\{i | rld_i > 0\} \]

To calculate the allocations factors $f_1, f_2$, first the total sum of root restriction factors is calculated \[ s = \sum_i rrf_{1_i} + \sum_i rrf_{2,i} \]

then the factor per layer is the root restriction factor per layer divided by the sum

\[ f_{1,i} = \frac{rff_{1,i}}{s} \quad \quad f_{2,i} = \frac{rff_{2,i}}{s} \]

To get the total factors, the factor per per layers are summed up

\[ f_1 = \sum_i f_{1,i} \quad \quad f_2 = \sum_i f_{2,i} \]

References

Author:

G. Krauss

See Also:

• RadiationInterception
• IntercroppingFunctions
• SplitWaterUptake

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	cAreaFraction1	Area fraction covered by crop 1	DOUBLE	1	0.0	1.0	0.0
constant	cAreaFraction2	Area fraction covered by crop 2	DOUBLE	1	0.0	1.0	0.0
input	iRootDepth1	Root depth of crop 1	DOUBLE	m	0.0	-	0.0
input	iRootDepth2	Root depth of crop 2	DOUBLE	m	0.0	-	0.0
input	iRootLength1	Root length per layer of crop 1	DOUBLEARRAY	m	0.0	-	-
input	iRootLength2	Root length per layer of crop 2	DOUBLEARRAY	m	0.0	-	-
input	iRootLengthDensity1	Root length density per layer of crop 1	DOUBLEARRAY	cm/cm3	0.0	-	-
input	iRootLengthDensity2	Root length density per layer of crop 2	DOUBLEARRAY	cm/cm3	0.0	-	-
input	iRootRestrictionFactor1	root restriction factor per layer of crop 1	DOUBLEARRAY	1	0.0	-	-
input	iRootRestrictionFactor2	root restriction factor per layer of crop 2	DOUBLEARRAY	1	0.0	-	-
out	Factor1	Below ground allocation factor for crop 1	DOUBLE	1	0.0	1.0	0.0
out	Factor1PerLayer	Below ground allocation factor for crop 1 per layer	DOUBLEARRAY	1	0.0	1.0	-
out	Factor2	Below ground allocation factor for crop 2	DOUBLE	1	0.0	1.0	0.0
out	Factor2PerLayer	Below ground allocation factor for crop 2 per layer	DOUBLEARRAY	1	0.0	1.0	-
out	MD95	Highest layer number that contains roots (counting from 1)	INT		0	-	0
out	MaxRootedLayerNumber	Highest layer number that contains roots (counting from 0)	INT		0	-	0
out	RootDepth	Root depth	DOUBLE	m	0.0	-	0.0
out	RootLength	Root length per layer of both crops	DOUBLEARRAY	m	0.0	-	-
out	RootLengthDensity	Root length density per layer of both crops	DOUBLEARRAY	cm/cm3	0.0	-	-
out	RootRestrictionFactor	Averaged root restriction factor per layer of both crops	DOUBLEARRAY	1	0.0	-	-

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

Modifier	Constructor	Description
	BelowgroundAllocationFactor()	called from class.forName()
protected	BelowgroundAllocationFactor(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)
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	initVariables()
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

BelowgroundAllocationFactor

protected BelowgroundAllocationFactor(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 -

BelowgroundAllocationFactor

public BelowgroundAllocationFactor()

called from 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

init

protected void init()

Specified by:

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

initVariables

protected void initVariables()

process

protected void process()

Specified by:

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

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)

Specified by:

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

See Also:

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