Package net.simplace.sim.components.soil.soilcn

Class SimpleRootResidues

java.lang.Object

net.simplace.sim.model.FWSimComponent

net.simplace.sim.components.soil.soilcn.SimpleRootResidues

All Implemented Interfaces:

net.simplace.sim.util.FWSimFieldContainer

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

Distributes NPK of dead roots to layers, include living roots on harvest.

The component takes daily dead root biomass per layer and adds living roots per layer on harvest.

NPK content of dead and living roots is distributed proportionally to the layers.

Calculation

Total dead root TDR and total living root biomass TLR are calculated from the inputs iDeadRootsRatePerLayer \(DR_i\) and iLivingRootsPerLayer \(LR_i\) \[ TDR = \sum_{i=1}^n DR_i \\ TLR = \sum_{i=1}^n LR_i \]

DeadRootsRatePerLayer \(R_i\) is calculated as:

\[ R_i = \begin{cases} DR_i + LR_i & \text{if } DoHarvest \\ DR_i & \text{else} \end{cases} \]

DeadRootsCRatePerLayer \(RC_i\) is calculated as:

\[ RC_i = \begin{cases} 0.5 \cdot DR_i + 0.5 \cdot LR_i & \text{if } DoHarvest \\ 0.5 \cdot DR_i & \text{else} \end{cases} \]

DeadRootsNRatePerLayer \(RN_i\) is calculated using iDeadRootsNRate \(DRN\) and iLivingRootsN \(LRN\):

\[ RN_i = \begin{cases} DR_i\cdot \frac{DRN}{TDR} + LR_i \cdot \frac{LRN}{TLR} & \text{if } DoHarvest \\ DR_i\cdot \frac{DRN}{TDR} & \text{else} \end{cases} \]

For P and K the P and K dead root rates are calculated accordingly:

\[ RP_i = \begin{cases} DR_i\cdot \frac{DRP}{TDR} + LR_i \cdot \frac{LRK}{TLR} & \text{if } DoHarvest \\ DR_i\cdot \frac{DRP}{TDR} & \text{else} \end{cases} \]

\[ RK_i = \begin{cases} DR_i\cdot \frac{DRK}{TDR} + LR_i \cdot \frac{LRK}{TLR} & \text{if } DoHarvest \\ DR_i\cdot \frac{DRK}{TDR} & \text{else} \end{cases} \]

Notice

The component is sensitive to the order. It has to run after root and plant NPK components, as it takes root biomass and NPK content as inputs.

On the other hand it uses the values also on harvest - when root and NPK components may have reset their states already.

A possible solution to this problem is to use following relative order

1. root and plant NPK components
2. harvest managmenet
3. SimpleRootResidues

Author:

Gunther Krauss, guntherkrauss@uni-bonn.de

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
input	iDeadRootsKRate	Daily rate of dead roots K	DOUBLE	g/(m2 d)	-	-	0.0
input	iDeadRootsNRate	Daily rate of dead roots N	DOUBLE	g/(m2 d)	-	-	0.0
input	iDeadRootsPRate	Daily rate of dead roots P	DOUBLE	g/(m2 d)	-	-	0.0
input	iDeadRootsRatePerLayer	Daily rate of dead roots per layer	DOUBLEARRAY	g/(m2 d)	-	-	-
input	iDoHarvest	If true, living biomass that is not removed is added to the dead biomass rate	BOOLEAN		-	-	false
input	iLivingRootsK	Weight of roots K	DOUBLE	g/m2	-	-	0.0
input	iLivingRootsN	Weight of roots N	DOUBLE	g/m2	-	-	0.0
input	iLivingRootsP	Weight of roots P	DOUBLE	g/m2	-	-	0.0
input	iLivingRootsPerLayer	Weight of roots per layer	DOUBLEARRAY	g/m2	-	-	-
out	DeadRootsCRatePerLayer	Daily dead roots C rate per layer, possibly incremented by roots when plant harvested	DOUBLEARRAY	g/(m2 d)	-	-	-
out	DeadRootsKRatePerLayer	Daily dead roots K rate per layer, possibly incremented by roots when plant harvested	DOUBLEARRAY	g/(m2 d)	-	-	-
out	DeadRootsNRatePerLayer	Daily dead roots N rate per layer, possibly incremented by roots when plant harvested	DOUBLEARRAY	g/(m2 d)	-	-	-
out	DeadRootsPRatePerLayer	Daily dead roots P rate per layer, possibly incremented by roots when plant harvested	DOUBLEARRAY	g/(m2 d)	-	-	-
out	DeadRootsRatePerLayer	Daily dead roots rate per layer, possibly incremented by roots when plant harvested	DOUBLEARRAY	g/(m2 d)	-	-	-

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
SimpleRootResidues()	Empty constructor used by class.forName()

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()	Create the FWSimVariables as interface for this SimComponent
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()	Initializes the fields by getting input and output FWSimVariables from VarMap
protected void	process()	Process the algorithm and write the results back to VarMap

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

SimpleRootResidues

public SimpleRootResidues()

Empty constructor used by class.forName()

Method Details

createVariables

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

Create the FWSimVariables as interface for this SimComponent

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()

Initializes the fields by getting input and output FWSimVariables from VarMap

Specified by:

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

See Also:

• FWSimComponent.init()

process

protected void process()

Process the algorithm and write the results back to VarMap

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

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)