Package net.simplace.sim.components.soil.slim

Class NFixationRestrictionFactor

java.lang.Object

net.simplace.sim.model.FWSimComponent

net.simplace.sim.components.soil.slim.NFixationRestrictionFactor

All Implemented Interfaces:

net.simplace.sim.util.FWSimFieldContainer

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

Symbiotic N fixation

N fixation is controlled by cNFIXF, the fraction of daily N uptake by fixation. If set to 0 (default), no fixation occurs. If set to 1, then all N demand is fullfilled by N fixation.

The N fixation can be influenced by actual development stage, N and water content by setting the cSymbioticNFixationRestrictionFactor. 0 means no influence of restrictions, 1 means full influence of restrictions.

* \[ r = min(r_{soilN},r_{water},r_{development}) \] \[ ActualSymbioticNFixationRestrictionFactor = r \cdot cSymbioticNFixationRestrictionFactor + (1-cSymbioticNFixationRestrictionFactor) \]

The fixation restriction factor can be used as input to SimComponents like NPKDemand and will be multiplied with the N fixation factor (NFIXF).

Notice that NPKDemandSlimNP and NPKDemandSlimNitrogen have the fixation reduction already implemented.

Author:

Gunther Krauss

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	cSoilLayerDepth	-	DOUBLEARRAY	m	-	-	-
constant	cSoilWaterFieldCapacity	-	DOUBLEARRAY	m3/m3	-	-	-
constant	cSoilWaterWiltingPoint	-	DOUBLEARRAY	m3/m3	-	-	-
constant	cSymbioticNFixationRestrictionFactor	influence of development, soil water and soil N on fixation factor (0=no restriction, 1=full restriction, default .5)	DOUBLE	1	0.0	1.0	0.5
input	iDVS	actual development stage of crop (from 0 to 2)	DOUBLE	1	-	-	0.0
input	iMD95	Number of deepest soil layer containing roots (provided by other SimComponents e.g. SlimRoots)	INT	1	0	10000	0
input	iSoilAvailNitrate	Nitrate in mobile+retained water fractions (without fixed nitrate) in layer i	DOUBLEARRAY	g/m2	-	-	-
input	iTotalWater	Total water content in each soil layer (mm)	DOUBLEARRAY	mm	-	-	-
out	ActualSymbioticNFixationRestrictionFactor	actual factor to multiply the ratio of crop N uptake by symbiotic fixation, depending possibly on development, soil water and soil N.	DOUBLE	1	0.0	1.0	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
NFixationRestrictionFactor()	called from class.forName()
NFixationRestrictionFactor(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.
final void	init()	Set the soil water and nitrogen content for all layers.
protected void	process()	Calculates one step (i.e. one day)
protected void	reInitialize()

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

NFixationRestrictionFactor

public NFixationRestrictionFactor(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 -

NFixationRestrictionFactor

public NFixationRestrictionFactor()

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

See Also:

• FWSimComponent.createVariables()

init

public final void init()

Set the soil water and nitrogen content for all layers.

Specified by:

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

reInitialize

protected void reInitialize()

process

protected void process()

Calculates one step (i.e. one day)

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)