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net.simplace.client.simulation.lap.lintul2.Lintul2

Lintul2 is the implementation of the original FST Version of Lintul2, which you find at (L2).

Model description

For the model description please consult the original documentation from (L2).

Changes in the SIMPLACE version

In order to integrate in the SIMPLACE Framework and make the model run over multiple years, following changes were made.

There are two additional boolean input Variables iDoSow and iDoHarvest
There is an additional output variable WithCrop, which is set to true

when iDoSow is true and set to false, when iDoHarvest is true

Calculation is performed only while WithCrop is true (between iDoSow and iDoHarvest). Outside

this period, variables remain on their initial values.

On iDoSow and iDoHarvest, the variables are reset to their initial values. When calculating

multiple years, no values are kept from one vegetation period to the other

The internal variable is TIME always set to the value of the model DOY, when iDoSow is true

and is incremented daily while WithCrop is true

Result comparison

This versions produces same results (up to rounding) as the FST version. Comparison was made by running the FST script LINTUL2NetherlandsParams.FST with weather data NLD1.970 and NLD1.971 from (W). To perform the comparison, run the SIMPLACE unit test net.simplace.client.simulation.lap.test.model.Lintul2Test.testLintul2Project() and run the FST file above with

References

(L2) a simple crop growth model for both potential and water limited growing conditions] (W) data all files (01/01/2012)]

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	cDOYEM	Daynumber at crop emergence	INT	d	-	-	1
constant	cDRATE	Maximum drainage rate (soil characteristic)	DOUBLE	mm/d	-	-	50.0
constant	cFLVTB	Table of FLV as a function of TSUM	DOUBLEARRAY	1	-	-	-
constant	cFRTTB	Table of FRT as a function of TSUM	DOUBLEARRAY	1	-	-	-
constant	cFSOTB	Table of FSO as a function of TSUM	DOUBLEARRAY	1	-	-	-
constant	cFSTTB	Table of FST as a function of TSUM	DOUBLEARRAY	1	-	-	-
constant	cIRRIGF	Irrigation rate relative to the rate needed to keep the soil water status at field capacity (WC=WCFC)	DOUBLE	1	-	-	0.0
constant	cK	Extinction coefficient for photosynthetically active radiation	DOUBLE	1	-	-	0.6
constant	cLAICR	Critical LAI beyond which leaves die due to self-shading	DOUBLE	m2/m2	-	-	4.0
constant	cLAII	Initial leaf area index (at crop emergence)	DOUBLE	m2/m2	-	-	0.012
constant	cLUE	Light use efficiency (dry matter produced per unit of intercepted photosynthetically active radiation)	DOUBLE	g/MJ	-	-	3.0
constant	cRDRSHM	Maximum relative death rate of leaves due to shading	DOUBLE	d-1	-	-	0.03
constant	cRDRT	Table of RDR as a function of temperature	DOUBLEARRAY	1	-	-	-
constant	cRGRL	Relative growth rate of LAI during exponential growth	DOUBLE	reciprocal_degree_Celsius_day	-	-	0.009
constant	cROOTDI	Initial rooting depth (at crop emergence)	DOUBLE	m	-	-	0.1
constant	cROOTDM	Maximum rooting depth	DOUBLE	m	-	-	1.2
constant	cRRDMAX	Maximum rate of increase in rooting depth	DOUBLE	m/d	-	-	0.012
constant	cSLA	Specific leaf area	DOUBLE	m2/g	-	-	0.022
constant	cTBASE	Base temperature	DOUBLE	°C	-	-	0.0
constant	cTRANCO	Transpiration constant (crop characteristic indicating the level of drought tolerance)	DOUBLE	mm/d	-	-	8.0
constant	cTSUMAN	Temperature sum at anthesis	DOUBLE	°C d	-	-	1110.0
constant	cWCAD	Soil water content at air dryness	DOUBLE	m3/m3	0.0	1.0	0.08
constant	cWCFC	Soil water content at field capacity	DOUBLE	m3/m3	0.0	1.0	0.36
constant	cWCI	Initial soil water content (at start of the simulation run)	DOUBLE	m3/m3	0.0	1.0	0.36
constant	cWCST	Soil water content at full saturation	DOUBLE	m3/m3	0.0	1.0	0.55
constant	cWCWET	Critical soil water content for transpiration reduction due to waterlogging	DOUBLE	m3/m3	0.0	1.0	0.48
constant	cWCWP	Soil water content at wilting point	DOUBLE	m3/m3	0.0	1.0	0.23
input	iDoHarvest	harvesting	BOOLEAN	1	-	-	false
input	iDoSow	sowing	BOOLEAN	1	-	-	false
input	iRAIN	Water input through rainfall	DOUBLE	mm/d	-	-	0.0
input	iRDD	Daily global radiation (weather file)	DOUBLE	J/(m2 d)	-	-	0.0
input	iTMMN	Daily minimum temperature (weather file)	DOUBLE	°C	-	-	0.0
input	iTMMX	Daily maximum temperature (weather file)	DOUBLE	°C	-	-	0.0
input	iVP	Vapour pressure of the air	DOUBLE	kPa	-	-	0.0
input	iWN	Wind speed	DOUBLE	m/s	-	-	0.0
state	sLAI	Leaf area index	DOUBLE	m2/m2	-	-	0.0
state	sROOTD	Rooting depth	DOUBLE	m	-	-	0.0
state	sTRAIN	Total rain	DOUBLE	mm	-	-	0.0
state	sTSUM	Temperature sum	DOUBLE	°C d	-	-	0.0
state	sWA	Actual amount of water in the soil	DOUBLE	mm	-	-	0.0
state	sWLVD	Dry weight of dead leaves	DOUBLE	g/m2	-	-	0.0
state	sWLVG	Dry weight of green leaves	DOUBLE	g/m2	-	-	0.0
state	sWRT	Dry weight of roots	DOUBLE	g/m2	-	-	0.0
state	sWSO	Dry weight of storage organs	DOUBLE	g/m2	-	-	0.0
state	sWST	Dry weight of stems	DOUBLE	g/m2	-	-	0.0
rate	rDLV	Death rate of leaves	DOUBLE	g/(m2 d)	-	-	0.0
rate	rRLAI	Growth rate of LAI	DOUBLE	square_metre_per_square_metre_day	-	-	0.0
rate	rRROOTD	Rate of increase in rooting depth	DOUBLE	m/d	-	-	0.0
rate	rRTSUM	Rate of increase of the temperature sum	DOUBLE	°C	-	-	0.0
rate	rRWA	Overall rate of change of soil water amount	DOUBLE	mm/d	-	-	0.0
rate	rRWLVG	Net rate of increase weight of green leaves	DOUBLE	g/(m2 d)	-	-	0.0
rate	rRWRT	Rate of increase weight of roots	DOUBLE	g/(m2 d)	-	-	0.0
rate	rRWSO	Rate of increase weight of storage organs	DOUBLE	g/(m2 d)	-	-	0.0
rate	rRWST	Rate of increase weight of stems	DOUBLE	g/(m2 d)	-	-	0.0
DAVTMP	Daily average temperature	DOUBLE	°C	null
DLAI	Death rate of leaf area index	DOUBLE	square_metre_per_square_metre_day	null
DRAIN	Drainage rate below the root zone	DOUBLE	mm/d	null
DTEFF	Daily effective temperature	DOUBLE	°C	null
DTR	Daily global radiation	DOUBLE	MJ/(m2 d)	null
EMERG	Auxiliary variable indicating crop emergence	DOUBLE	1	null
EVAP	Rate of evaporation from the soil	DOUBLE	mm/d	null
EXPLOR	Exploration rate of new soil water layers by root depth growth	DOUBLE	mm/d	null
GLAI	Growth rate of leaf area index	DOUBLE	square_metre_per_square_metre_day	null
GLV	Growth rate of leaf dry matter	DOUBLE	g/(m2 d)	null
GTOTAL	Growth rate of total crop dry matter	DOUBLE	g/(m2 d)	null
IRRIG	Irrigation rate	DOUBLE	mm/d	null
PARINT	Intercepted photosynthetically active radiation	DOUBLE	MJ/(m2 d)	null
PEVAP	Potential rate of evaporation from the soil	DOUBLE	mm/d	null
PTRAN	Potential transpiration rate	DOUBLE	mm/d	null
RDR	Relative death rate of leaves	DOUBLE	d-1	null
RNINTC	Interception of rain by the canopy	DOUBLE	mm/d	null
RUNOFF	Loss of water by runoff	DOUBLE	mm/d	null
TRAN	Rate of transpiration by the crop	DOUBLE	mm/d	null
TRANRF	Ratio of actual and potential transpiration (factor that accounts for reduced LUE because of water stress)	DOUBLE	-	null
WAI	Initial soil water amount (at start of the simulation run)	DOUBLE	mm	null
WC	Actual soil water content	DOUBLE	m3/m3	null
WLV	Dry weight of leaves	DOUBLE	g/m2	null
WLVI	Initial dry weight of green leaves (at crop emergence)	DOUBLE	g/m2	null
WSOTHA	Dry weight of storage organs	DOUBLE	ton_per_hectare	null
WithCrop	crop is present	BOOLEAN	1	null

public class Lintul2 extends net.simplace.simulation.model.FWSimComponent {
// Public Constructors
public Lintul2(String aName, HashMap aFieldMap, HashMap aInputMap, Element
aSimComponentElement, FWSimVarMap aVarMap, int aOrderNumber);
public Lintul2();

// 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 initValues();

protected void resetOnHarvest();

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) - Lintul2