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net.simplace.client.simulation.lap.lintul.LintulWaterStress

LintulWaterStress calculates the transpiration reduction factor (TRANRF) based on the ratio between actual crop transpiration (TRAN in mm) and potential crop transpiration (PTRAN in mm):

\[ \begin{eqnarray} TRANRF &=& MIN(1,\frac{TRAN}{PTRAN} \cdot \frac{1}{DroughtTolerance}); \end{eqnarray} \]

TRAN and PTRAN are provided by the SimComponent EvapTran.java. The SimComponent forsees another factor of "drought tolerance" (besides TRANCO in the SimComponent EvapTran.java) to dampen the effect of drought stress by directly reducing TRANRF, but changing the "DroughtTolerance" factor to values other than unity is strongly discouraged.

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.

Component Variables

Content Type	Name	Description	Data Type	Unit	Max Value	Default Value
constant	cDroughtTolerance	Tolerance of plant for drought	DOUBLE	1	1.0	1.0
input	iActualTranspiration	Actual Transpiration	DOUBLE	mm/d	10.0	0.0
input	iPotentialTranspiration	Potential Transpiration	DOUBLE	mm/d	10.0	0.0
out	TRANRF	Transpiration reduction factor	DOUBLE	1	1.0	1.0

public class LintulWaterStress extends
net.simplace.simulation.model.FWSimComponent {
// Public Constructors
public LintulWaterStress();

// Public Instance Methods

public HashMap createVariables(); // Defines
net.simplace.simulation.model.FWSimComponent

create the FWSimVariables as interface for this SimComponent

// Protected Instance Methods

protected void init(); // Defines
net.simplace.simulation.model.FWSimComponent

initializes the fields by getting input and output FWSimVariables from VarMap

protected void process(); // Defines
net.simplace.simulation.model.FWSimComponent

process the algorithm and write the results back to VarMap

protected FWSimComponent clone(FWSimVarMap aVarMap);
// Defines net.simplace.simulation.model.FWSimComponent

creates a clone from this SimComponent for use in other threads

}

Hierarchy: java.lang.Object - net.simplace.simulation.model.FWSimComponent (net.simplace.simulation.util.FWSimFieldContainer) - LintulWaterStress