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net.simplace.client.simulation.lap.lintul.EvapTran

EvapTran.java estimates the potential actual crop transpiration and soil evaporation based on the potential values considering the crop available soil water content and the crop water demand at a given day as a function of LAI

The calculation of daily amount of the crop available soil water (WAC in mm) content requires the definition of soil properties related to water retention characteristics WCAD WCWP WCFC WCWET WCST WCI

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	Min Value	Max Value	Default Value
constant	cTRANCO	Transpiration constant (Crop characteristic indicating the level of drought tolerance)	DOUBLE	mm/d	0.0	20.0	8.0
constant	cWaterContentAirDry	Soil water content after air drying	DOUBLE	m3/m3	0.0	1.0	0.025
constant	cWaterContentFieldCapacity	Soil water content at field capacity	DOUBLE	m3/m3	0.0	1.0	0.23
constant	cWaterContentInitial	Initial soil water content (at start of the simulation run); in the case of multiple year runs, this value should be re-initialized each year on day of the sowing/planting	DOUBLE	m3/m3	0.0	1.0	0.23
constant	cWaterContentSaturation	Soil water content at saturation of the soil with water	DOUBLE	m3/m3	0.0	1.0	0.4
constant	cWaterContentWet	Critical soil water content for transpiration reduction due to waterlogging/oxygen deficiency in the root zone	DOUBLE	m3/m3	0.0	1.0	0.35
constant	cWaterContentWiltingPoint	Soil water content at wilting point	DOUBLE	m3/m3	0.0	1.0	0.075
input	iDoHarvest	True if plant is harvested	BOOLEAN	1	-	-	false
input	iDoSow	True if plant is sown	BOOLEAN	1	-	-	false
input	iPotentialEvaporation	Daily potential soil evaporation	DOUBLE	mm/d	0.0	20.0	-
input	iPotentialTranspiration	Daily potential transpiration	DOUBLE	mm/d	0.0	20.0	-
input	iRootDepth	Root depth at a given day	DOUBLE	m	0.0	20.0	0.0
input	iWaterContent	Actual amount of water stored over the soil root zone	DOUBLE	mm	0.0	25.0	-
Evaporation	Daily actual evaporation	DOUBLE	mm/d	null
Transpiration	Daily actual transpiration	DOUBLE	mm/d	null

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

// 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) - EvapTran