Package net.simplace.sim.components.models.lintul

Class LintulRoot

java.lang.Object

net.simplace.sim.model.FWSimComponent

net.simplace.sim.components.models.lintul.LintulRoot

All Implemented Interfaces:

net.simplace.sim.util.FWSimFieldContainer

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

Root depth growth calculation (only root depth, no root biomass)

LintulRoot.java The SimComponent LintulRoot.java calculates the daily increase in root depth (RROOTD in m d-1) depending on the crop development stage (DevStage) and the actual volumetric soil water content (WC). Vertical root growth only occurs when (1) the development of the crop has not reached anthesis (DevStage <1) and (2) the actual rooting depth (ROOTD in m) is below the user defined maximum rooting depth (ROOTDM in m). In this case, daily root growth rate depends on the crop specific maximum daily root growth rate (RRDMAX in m d-1) and the volumetric soil water content (WC in m^3 m^-3) in relation to the volumetric soil water content at wilting point (WCWP in m^3 m^-3):

\[ \begin{eqnarray} if & & ROOTD > ROOTDM & & and & & DevStage < 1: RROOTD = RRDMAX \cdot INSW(WC-WCWP) \end{eqnarray} \]

If crop developemnt has passed beyond anthesis or if ROOTD has reached ROOTDM, the daily increase in rrot depth is zero.

References: van Oijen, M. and P. Lefelaar. 2008. Lintul-2: water limited crop growth: A simple general crop growth model for water-limited growing conditions. Waageningen University, The Netherlands.

Author:

Gunther Krauss, Andreas Enders, Thomas Gaiser

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	cInitRootDepth	Initial rooting depth (at crop emergence)	DOUBLE	m	0.0	5.0	0.1
constant	cMaxRootDepth	Maximum rooting depth	DOUBLE	m	0.0	5.0	1.2
constant	cMaxRootGrowthRate	Maximum rate of increase in rooting depth	DOUBLE	m/d	0.0	2.0	0.012
constant	cWCWP	Soil water content at wilting point	DOUBLE	m3/m3	0.0	1.0	0.075
input	iDevStage	Development stage of the plant	DOUBLE	1	0.0	20.0	0.0
input	iDoHarvest	If plant is harvested on this day	BOOLEAN	1	-	-	false
input	iDoSow	If plant is sown on this day	BOOLEAN	1	-	-	false
input	iGlobalWaterContent	Actual amount of water in the soil (WA)	DOUBLE	mm	0.0	1000.0	-
state	sRootDepth	Root Depth	DOUBLE	m	0.0	20.0	0.0
rate	rRateRootDepth	Rate of Root Depth	DOUBLE	m/d	0.0	2.0	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

Constructor	Description
LintulRoot()	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

LintulRoot

public LintulRoot()

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

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)