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CSP_PHOTO.for
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C CSP_PHOTO, Subroutine, based on PHOTO Subroutine by
C K.J.Boote, J.W.Jones, G. Hoogenboom
C Compute daily photosynthetic using canopy (C) method.
C-----------------------------------------------------------------------
C REVISION HISTORY
C 01/01/1989 KJB Written.
C 06/02/1993 NBP Made into subroutine.
C 02/11/1994 NBP Corrected dimension (15) for XPGSLW, YPGSLW
C 04/24/1994 NBP Replaced TAIRHR, TAVG with TGRO, TGROAV.
C 09/25/1995 KJB Light interception for ET the same for canopy and leaf
C models
C 11/11/1999 CHP Modified for modular format
C 01/13/2000 NBP Added SWFAC effect on PG
C 06/11/2002 GH Modified for Y2K
C 08/12/2003 CHP Added I/O error checking
C 10/09/2003 FSR Modified for O.H. Daza CASUPRO sugarcane model
C 08/17/2004 FV Modified PTSMAX photosynthesis calculation
C 09/02/2004 CHP Added KC_SLOPE to SPE file and KC_ECO to ECO file.
C 10/04/2005 FSR Implemented stalk-level phosynthesis.
!-----------------------------------------------------------------------
! Called from: CSP_CASUPRO
! Calls: CSP_PHOTIP
C=======================================================================
SUBROUTINE CSP_PHOTO(CONTROL,FILEIO,
& CANHT, CanLmtFac, CANWH, CO2, ECONO, EXCESS, !Input
& DeltaLeafArea, DeltaLeafNum, FILECC, !Input
& DeltaLeafArealost, FILEGC, FRACSH, FRSHV, !Input
& KCAN, LeafArea,LeafAreaPlant, LeafNum, !Input
& LfShdFac, PAR, !Input
& PStres2, RNITP, SLAREF, SLAAD, !Input
& SLPF, Smax, StalkState, StkHt, SWFAC, TAVG, !Input
& TURFAC, WEATHER, XHLAI, !Input
& AGEFAC, LeafDist, LI, LITOTAL, PGT, PgRatio, !Output
& PLTPOP, StkPG) !Output
!-----------------------------------------------------------------------
USE ModuleDefs !Definitions of constructed variable types,
USE ModuleData
IMPLICIT NONE
SAVE
CHARACTER*3 TYPPGN, TYPPGT
CHARACTER*4 StalkState(NumOfStalks,10)
CHARACTER*6 ECONO
CHARACTER*30 FILEIO
CHARACTER*92 FILECC, FILEGC
INTEGER DAS, DYNAMIC, H, PLUN, Smax, YRDOY, YRSIM, Zone
REAL AGEFAC, AGEFCC, A0, BETN, CANHT, CanLmtFac, CANWH,
& CCEFF, CCK, CCMAX, CCMP, CO2, COLDSTR, CUMSTR, CURV,
& E_FAC, FRACSH, FRSHAV, FRSHV, KCAN, LAITH1,
& LAITH2, LAsun, LAshd, LAgnd, LIsun, LaiAllZone, LAI2, LIalt,
& LaiSunZone, LaiShdZone, LaiGndZone, LfShdFac, LIshd,
& LIsunAvl, LIshdAvl, LIgndAvl, LNREF, PAR, PARMAX, PG,
& LI, LIallZone, LITOTAL, SLPF, PGT,
& PGLFMX, PGREF, PGSLW, PHTMAX, PLTPOP, PRATIO,
& PStres2, PTSMAX, RNITP, ROWSPC, SHLAI, SLAREF, SLAAD,
& SLW, SNDN, SNUP, SWFAC, TABEX,
& TGRO(TS), TLI, TURFAC, XHLAI, XLAI
REAL PlantLeafAreaTmp, temp
INTEGER OpenStatus, Stalk
INTEGER GP1, GP2, GP3, Sun, Shade, Ground
! INTEGER, PARAMETER :: Sun=1, Shade=2, Ground=3, CanopyLayers=3
INTEGER, PARAMETER :: CanopyLayers=3
REAL FNPGN(4), FNPGT(4)
REAL TAVG, PG_b, XPGSLW(15), YPGSLW(15)
REAL, DIMENSION(0:NumOfDays) :: LeafAreaPlant, LAtmp, LAItmp
REAL, DIMENSION(1:NumOfStalks) :: EXCESS, PgRatio,
& StkHt, TotalPG
REAL, DIMENSION(0:NumOfDays,NumOfStalks) :: LeafArea, LeafNum,
& DeltaLeafArea, DeltaLeafArealost, DeltaLeafNum
REAL, DIMENSION(1:NumOfStalks,CanopyLayers) :: LeafDist, StkLI,
& StkPG
TYPE (WeatherType) WEATHER
!-----------------------------------------------------------------------
! Define constructed variable types based on definitions in
! ModuleDefs.for.
! The variable "CONTROL" is of type "ControlType".
TYPE (ControlType) CONTROL
TYPE (SwitchType) ISWITCH
! Transfer values from constructed data types into local variables.
DAS = CONTROL % DAS
DYNAMIC = CONTROL % DYNAMIC
FILEIO = CONTROL % FILEIO
YRDOY = CONTROL % YRDOY
YRSIM = CONTROL % YRSIM
SNDN = WEATHER % SNDN
SNUP = WEATHER % SNUP
C***********************************************************************
C***********************************************************************
C Run Initialization - Called once per simulation
C***********************************************************************
IF (DYNAMIC .EQ. RUNINIT) THEN
C-----------------------------------------------------------------------
CALL CSP_PHOTIP(FILEIO,
& CCEFF, CCMAX, CCMP, FNPGN, FNPGT, LIsun, !, KCAN
& LIshd, LNREF, PARMAX, PGREF, !, LMXSTD, PHTHRS10
& PHTMAX, PLTPOP, ROWSPC, TYPPGN, TYPPGT, XPGSLW,
& YPGSLW)
C-----------------------------------------------------------------------
C Adjust canopy photosynthesis for GENETIC input value of
C maximum leaf photosynthesis (LMXSTD). Exponential curve from
C from the hedgerow photosynthesis model (Boote et al, 199?).
! This needs be revised in case of use.
C-----------------------------------------------------------------------
! Copied from CSP_GROW FSR
!-----------------------------------------------------------------------
!! ROWSPC = ROWSPC / 100.
!! IF (ROWSPC .GT. 0.0 .AND. PLTPOP .GT. 0.0) THEN
!! BETN = 1./(ROWSPC*PLTPOP)
!! ELSE
!! BETN = 0.
!! ENDIF
Sun=1
Shade=2
Ground=3
C-----------------------------------------------------------------------
CALL CSP_CANOPY(CONTROL,
& DAS, DeltaLeafNum, ECONO, FILECC, !Input
& FILEGC, FRACSH, FRSHV, KCAN, !Input
& LeafNum, PAR, ROWSPC, Smax, !Input
& StalkState, TGRO, TURFAC, WEATHER, XHLAI, !Input
& CANHT, CANWH, FRSHAV, H, StkHt) !Output
C-----------------------------------------------------------------------
! LMXSTD Maximum leaf photosyntheses for standard cultivar. No apparent
! source for this in CASUPRO files. Had been using M1 from
! CUL file, but that was an apparent legacy from CropGro.
! PGREF Reference value for leaf level photosynthesis used in canopy
! light response curve (µmol[CO2] / m2-s)
! chp 2/9/2007 remove LMXSTD, no value available.
! IF (PGREF .GT. 0.0 .AND. LMXSTD .GT. 0.0) THEN
! PGLFMX = (1. - EXP(-1.6 * LMXSTD)) / (1. - EXP(-1.6 * PGREF))
! ELSE
PGLFMX = 1.0
! ENDIF
C***********************************************************************
C***********************************************************************
C Seasonal initialization - run once per season
C***********************************************************************
ELSEIF (DYNAMIC .EQ. SEASINIT) THEN
C-----------------------------------------------------------------------
! Open file to write results from CSP_PHOTO.FOR
CALL GET(ISWITCH)
IF (INDEX('Y' ,ISWITCH%IDETG) > 0 .AND.
& INDEX('YDA',ISWITCH%IDETL) > 0) THEN
CALL GETLUN('CSP_PHOTO',PLUN)
OPEN(UNIT = PLUN, FILE = "CSP_PHOTO.OUT", STATUS = "UNKNOWN",
& ACTION = "WRITE", POSITION = "REWIND", IOSTAT = OpenStatus)
WRITE(PLUN,'(1X,"RESULTS FROM CSP_PHOTO.FOR")')
WRITE(PLUN,'(90X,"LeafArea m2")')
WRITE(PLUN,'(1X," YRDOY DAS XHLAI LAIAZ SHLAI FRSHA
&LIalt LI LITOT LIsun LIshd LIgnd PG PGTOT GP1 GP2
& GP3 EXCESS
& PAR RNITP SLAAD SWFAC TAVG AGEFAC PTSMAX SLPF
&TLI AGEFCC PGSLW PRATIO PGLFMX")',
& ADVANCE="NO")
!!! DO Stalk = 1, Smax
!!! WRITE(PLUN,'(" LI",I2)',ADVANCE="NO") Stalk
!!! END DO
DO Stalk = 1,Smax
WRITE(PLUN,'(" PG",I2.2)',ADVANCE="NO") Stalk
END DO
ENDIF
C-----------------------------------------------------------------------
AGEFAC = 0.0
CUMSTR = 0.0
COLDSTR = 0.0
LaiSunZone = 0.0
LaiShdZone = 0.0
LaiGndZone = 0.0
LaiAllZone = 0.0
LIsunAvl = 0.0
LIshdAvl = 0.0
LIgndAvl = 0.0
!************ new ************
FRACSH = 0.0
PGT = 0.0
LAsun = 0.0 ! Daily leaf area, stalks in pseudo-zone 1
LAshd = 0.0 ! Daily leaf area, stalks in pseudo-zone 2
LAgnd = 0.0 ! Daily leaf area, stalks in pseudo-zone 3
LITOTAL = 0.0 ! Sum of stalk Light Interception
GP1 = 0
GP2 = 0
GP3 = 0
LAI2 = 0.
DO Stalk = 1,Smax
DO Zone = 1,3
LeafDist(Stalk,Zone) = 0.0
StkPG(Stalk,Zone) = 0.0
StkLI(Stalk,Zone) = 0.0
END DO ! Zone
END DO ! Stalk
!************ end ************
! LAItmp = 0.0
PG = 0.0
DO Stalk = 1,Smax
!!! DO Zone = 1,3
!!! StkPG(Stalk,Zone) = 0.0
!!! StkLI(Stalk,Zone) = 0.0
!!! END DO ! Zone
PgRatio(Stalk) = 0.0
TotalPG(Stalk) = 0.0
StalkState(Stalk,3) = ' '
END DO ! Stalk
C-----------------------------------------------------------------------
! Calculate the fraction of ground area shaded prior to canopy closing.
CALL CSP_CANOPY(CONTROL,
& DAS, DeltaLeafNum, ECONO, FILECC, !Input
& FILEGC, FRACSH, FRSHV, KCAN, !Input
& LeafNum, PAR, ROWSPC, Smax, !Input
& StalkState, TGRO, TURFAC, WEATHER, XHLAI, !Input
& CANHT, CANWH, FRSHAV, H, StkHt) !Output
C-----------------------------------------------------------------------
LAITH1 = (1/(-KCAN)) * log(1-LIsun) !chp for portability
LAITH2 = (1/(-KCAN)) * log(1-LIshd)
C***********************************************************************
C***********************************************************************
C Daily rate calculations
C***********************************************************************
ELSEIF (DYNAMIC .EQ. RATE) THEN
C-----------------------------------------------------------------------
GP1 = 0
GP2 = 0
GP3 = 0
DO Stalk = 1,Smax
DO Zone = 1,3
StkPG(Stalk,Zone) = 0.0
StkLI(Stalk,Zone) = 0.0
END DO ! Zone
END DO ! Stalk
! CanopyLayers
! Sun = 1
! Shade = 2
! Ground = 3
C-----------------------------------------------------------------------
C Calculate maximum photosynthesis as function of PAR, g CH2O/m2
C-----------------------------------------------------------------------
PGT = 0.0
LAsun = 0.0 ! Daily leaf area, stalks in pseudo-zone 1
LAshd = 0.0 ! Daily leaf area, stalks in pseudo-zone 2
LAgnd = 0.0 ! Daily leaf area, stalks in pseudo-zone 3
LITOTAL = 0.0 ! Sum of stalk Light Interception
PTSMAX = PHTMAX * (1.0 - EXP(-(1.0 / PARMAX) * PAR))
! Use this equation for the time being. Maximum photosynthesis without
! any correction (See correction factors in equation above).
! Calculations taken from paper of Goudriaan and van Laar ()
!Fernando Villegas changed 8/17/2004
! PTSMAX = -0.0035 * PAR ** 2 + 1.068 * PAR
PG_b = PTSMAX
C-----------------------------------------------------------------------
C Calculate reduction in photosynthesis due to incomplete canopy.
C-----------------------------------------------------------------------
! LI - Light Interception
!
! Ignore KCANR for stalk-based photosynthesis - JWJ
!! IF (BETN .LE. ROWSPC) THEN
!! SPACNG = BETN / ROWSPC
!! ELSE
!! SPACNG = ROWSPC / BETN
!! ENDIF
!! PGFAC = 1. - EXP(-KCANR * XHLAI)
LI = 1. - EXP(-KCAN * XHLAI)
C-----------------------------------------------------------------------
C Compute reduction in PG based on the average daylight temperature.
!
TLI = CURV(TYPPGT,FNPGT(1),FNPGT(2),FNPGT(3),FNPGT(4),TAVG)
C-----------------------------------------------------------------------
C Compute reduction in PG as a function of leaf N concentration.
! Until N stress is restored, temporarily replaced following lines so
! that AGEFCC = approx 1 FSR
!
! AGEFAC = CURV(TYPPGN,FNPGN(1),FNPGN(2),FNPGN(3),FNPGN(4),RNITP)
! AGEREF = CURV(TYPPGN,FNPGN(1),FNPGN(2),FNPGN(3),FNPGN(4),LNREF)
! AGEFAC = AGEFAC / AGEREF
AGEFAC = 1.028571
C-----------------------------------------------------------------------
C 9/24/95 KJB,JWJ Decrease sensitivity of canopy PG to N function
C to mimic behavior of leaf version. AGEFAC corresponds to leaf
C PG vs. leaf N. Function does not act strongly on QE, thus, we
C need to scale effect back on daily canopy version.
C-----------------------------------------------------------------------
AGEFCC = (1.0 - EXP(-2.0 * AGEFAC)) / (1. - EXP(-2.0 * 1.0))
C-----------------------------------------------------------------------
C Compute canopy PG response to changes in specific leaf weight.
C (Dornhoff and Shibles, 197?).
C-----------------------------------------------------------------------
IF (SLAAD .GT. 0.0) THEN
SLW = 1. / SLAAD
ELSE IF (SLAREF .GT. 0.0) THEN
SLW = 1. / SLAREF
ELSE
SLW = 0.0099
ENDIF
PGSLW = TABEX(YPGSLW, XPGSLW, SLW, 10)
C-----------------------------------------------------------------------
C Adjust canopy photosynthesis for CO2 concentration assuming a
C reference value of CO2 of 330 ppmv.
C-----------------------------------------------------------------------
CCK = CCEFF / CCMAX
A0 = -CCMAX * (1. - EXP(-CCK * CCMP))
PRATIO = A0 + CCMAX * (1. - EXP(-CCK * CO2))
!***********************************************************************
!***********************************************************************
! Daily integration
!***********************************************************************
ELSEIF (DYNAMIC .EQ. INTEGR) THEN
!-----------------------------------------------------------------------
! 09-14-2007 FSR restored the INTEGR section which had been commented
! out in the CSP_PHOTO module. This was done to be more consistent
! the CSP_GROW_CANE module, since CSP_PHOTO shares several variables
! with CSP_GROW_CANE in order to distribute each stalk's leaf area
! across three canopy zones. These functions of CSP_PHOTO are more
! integrative than rate-calculating.
!
C Effect of daylength on daily gross PG, computed by KJB with
C stand alone model, and used by Ernie Piper in his dissertation
C see page 127 for the equation and conditions. Nornalized to
C about 13 hours where the function is 1.00. Actually
C normalized to a bit higher between 13 and 14 hours.
C
C DLFAC = 1.0 + 0.6128 - 0.01786*DAYL + 0.006875*DAYL*DAYL
C & - 0.000247*DAYL*DAYL*DAYL
C
C-----------------------------------------------------------------------
! AGEFAC Relative effect of current leaf N on canopy photosynthesis (0-1)
! (fraction)
! AGEFCC Effect of AGEFAC on photosynthesis
! AGEREF Reference value calculated at reference leaf N value to
! normalize the effect of N for different plant species
! LI Multiplier to compute daily canopy PG as a function of leaf area
! index (LAI)
! PGLFMX Multiplier for daily canopy photosynthesis to account for
! cultivar differences in leaf photosynthesis capabilities
! PGREF Reference value for leaf level photosynthesis used in canopy
! light response curve (µmol[CO2] / m2-s)
! PGSLW Relative effect of leaf thickness (SLW) on daily canopy PG
! PRATIO Relative effect of CO2 on canopy PG, for multiplying by PG
! computed for 330 vpm
! PTSMAX Potential amount of CH20 which can be produced at the specified
! PAR for full canopy (LAI>8), all other factors optimal
! (g[CH2O]/m2-d)
! SLPF Empirical multiplier to adjust daily canopy PG due to unknown
! soil or environmental factors that persist in a given location
! SWFAC Effect of soil-water stress on photosynthesis, 1.0=no stress,
! 0.0=max stress
! TLI Reduction in specific leaf area due to daytime temperature
! being less than optimal (0-1)
! --------------------- temp for checking output -----------------------
C Compute daily gross photosynthesis (g CH2O/m2/d)
! Phosphorus stress
! Following CropGro photo.for (CHP 05/07/2004)
! AGEFCC can be > 1.0, so don't want to use minimum of PSTRES2 and AGEFCC
! (PSTRES2 is always 1.0 or below).
IF (AGEFCC .GE. 1.0) THEN
E_FAC = AGEFCC * PSTRES2
ELSE
E_FAC = MIN(AGEFCC, PSTRES2)
ENDIF
!-----------------------------------------------------------------------
! Calculate the fraction of ground area shaded prior to canopy closing.
CALL CSP_CANOPY(CONTROL,
& DAS, DeltaLeafNum, ECONO, FILECC, !Input
& FILEGC, FRACSH, FRSHV, KCAN, !Input
& LeafNum, PAR, ROWSPC, Smax, !Input
& StalkState, TGRO, TURFAC, WEATHER, XHLAI, !Input
& CANHT, CANWH, FRSHAV, H, StkHt) !Output
C-----------------------------------------------------------------------
! Compute daily gross canopy photosynthesis (g CH2O/stalk/d)
!!
!! PG = PTSMAX * SLPF * LI * TLI * E_FAC * PGSLW
!! & * PRATIO * PGLFMX * SWFAC
!-----------------------------------------------------------------------
! FRSHAV - Avg of FRACSH; hourly daylight shaded area
! SHLAI - Shaded LAI; > XHLAI prior to canopy closing
! FRSHV - Vertical sun shadow fraction
! FRACSH - Hourly daylight shadow fraction of ground area
FRSHAV = MAX(FRSHAV, 3.0E-05)
SHLAI = XHLAI * 1 / FRSHAV
LIalt = (1. - EXP(-KCAN * (XHLAI/FRSHAV))) * FRSHAV
!-----------------------------------------------------------------------
! Compute daily gross canopy photosynthesis (g[CH2O]/m2-d)
! (this function is now used only for checking against sum of stalk PG)
PG = PTSMAX * SLPF * LIalt * TLI * E_FAC * PGSLW
& * PRATIO * PGLFMX * SWFAC
!-----------------------------------------------------------------------
!**********************************************************************
!----------------BEGIN STALK-BASED PHOTOSYNTHESIS METHOD----------------
!-----------------------------------------------------------------------
! Remove DEAD stalk leaf area.
DO Stalk = 1,Smax
IF (StalkState(Stalk,1) .EQ. 'DEAD') THEN
LAsun = LAsun - LeafDist(Stalk,Sun)
LeafDist(Stalk,Sun) = 0.
LAsun = MAX(LAsun,0.)
LAshd = LAshd - LeafDist(Stalk,Shade)
LeafDist(Stalk,Shade) = 0.
LAshd = MAX(LAshd,0.)
LAgnd = LAgnd - LeafDist(Stalk,Ground)
LeafDist(Stalk,Ground) = 0.
LAgnd = MAX(LAgnd,0.)
END IF ! (StalkState(Stalk,1) .EQ. 'DEAD')
END DO ! Stalk = 1,Smax
!-----------------------------------------------------------------------
! Remove senesced leaf area beginning with lowest leaves.
DO Stalk = 1,Smax
IF (StalkState(Stalk,1) .EQ. 'LIVE' .AND.
& DeltaLeafArealost(DAS,Stalk) > 0.) THEN
temp = DeltaLeafArealost(DAS,Stalk)
IF (LeafDist(Stalk,Ground) > 0.) THEN
LeafDist(Stalk,Ground) = LeafDist(Stalk,Ground)- temp
temp = 0.
IF (LeafDist(Stalk,Ground) < 0.) THEN
temp = -LeafDist(Stalk,Ground)
LeafDist(Stalk,Ground) = 0.
END IF ! (LeafDist(Stalk,Ground) < 0.)
END IF ! (LeafDist(Stalk,Ground) > 0.)
IF (LeafDist(Stalk,Shade) > 0. .AND. temp > 0.) THEN
LeafDist(Stalk,Shade) = LeafDist(Stalk,Shade)- temp
temp = 0.
IF (LeafDist(Stalk,Shade) < 0.) THEN
temp = -LeafDist(Stalk,Shade)
LeafDist(Stalk,Shade) = 0.
END IF ! (LeafDist(Stalk,Shade) < 0.)
END IF ! (LeafDist(Stalk,Shade) > 0.)
IF (LeafDist(Stalk,Sun) > 0. .AND. temp > 0.) THEN
LeafDist(Stalk,Sun) = LeafDist(Stalk,Sun) - temp
temp = 0.
IF (LeafDist(Stalk,Sun) < 0.) THEN
temp = -LeafDist(Stalk,Sun)
LeafDist(Stalk,Sun) = 0.
LaiSunZone = 0.
END IF ! (LeafDist(Stalk,Sun) < 0.)
END IF ! (LeafDist(Stalk,Ground) > 0.)
END IF ! (StalkState(Stalk,1) .EQ. 'LIVE')
temp = 0.
END DO !Stalk = 1,Smax
!-----------------------------------------------------------------------
!+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
!-----------------------------------------------------------------------
! Assign leaf area on each stalk to canopy zones based on available space
! in each canopy zone. Each stalk may have leaf area in each zone.
! This section corresponds to the period before the leaf canopy closes.
PlantLeafAreaTmp = 0. ! for de-bugging FSR
IF (FRSHAV < 1.0) THEN ! Canopy has not closed
DO Stalk = 1,Smax
IF (StalkState(Stalk,1) .EQ. 'LIVE') THEN
IF (LaiSunZone <= LAITH1) THEN
LeafDist(Stalk, Sun) = LeafDist(Stalk,Sun)
& + DeltaLeafArea(DAS,Stalk)
ELSE IF (LaiSunZone + LaiShdZone <= LAITH2) THEN
LeafDist(Stalk,Shade) = LeafDist(Stalk,Shade)
& + DeltaLeafArea(DAS,Stalk) !DAS-1
ELSE
LeafDist(Stalk,Ground) = LeafDist(Stalk,Ground)
& + DeltaLeafArea(DAS,Stalk) !DAS-1
END IF !
END IF !
END DO !Stalk = 1,Smax
ELSE ! (FRSHAV = 1.0 means canopy has closed)
! After closing, new leaf area is allocated to highest canopy zone where
! a stalk has previously-existing leaf area. Since the canopy has closed,
! the canopy zone is generally filled (LaiSunZone >= LAITH1), and new
! leaf area displaces existing leaf area, both same-stalk and other stalk,
! which are moved down a zone.
DO Stalk = 1,Smax
IF (LeafDist(Stalk,Sun) > 0.) THEN
LeafDist(Stalk,Sun) = LeafDist(Stalk,Sun)
& + LfShdFac * DeltaLeafArea(DAS,Stalk)
LeafDist(Stalk,Shade) = LeafDist(Stalk,Shade)
& + (1 - LfShdFac) * DeltaLeafArea(DAS,Stalk)
ELSE IF (LeafDist(Stalk,Shade) > 0.) THEN
LeafDist(Stalk,Shade) = LeafDist(Stalk,Shade)
& + LfShdFac * DeltaLeafArea(DAS,Stalk)
LeafDist(Stalk,Ground) = LeafDist(Stalk,Ground)
& + (1 - LfShdFac) * DeltaLeafArea(DAS,Stalk)
ELSE
LeafDist(Stalk,Ground) = LeafDist(Stalk,Ground)
& + DeltaLeafArea(DAS,Stalk)
END IF
END DO
END IF !(FRSHAV < 1.0)
!-----------------------------------------------------------------------
! Calculate cumulative leaf area in each canopy pseudo-zone
! IF (LeafAreaPlant(DAS-1) > 0) THEN
DO Stalk = 1,Smax
LAsun = LAsun + LeafDist(Stalk,Sun)
LAshd = LAshd + LeafDist(Stalk,Shade)
LAgnd = LAgnd + LeafDist(Stalk,Ground)
PlantLeafAreaTmp = PlantLeafAreaTmp !for debugging FSR
& + LeafDist(Stalk,Sun)
& + LeafDist(Stalk,Shade)
& + LeafDist(Stalk,Ground)
END DO !Stalk = 1,Smax
LAtmp(DAS) = LAsun + LAshd + LAgnd !FSR-temporary debug check
!-----------------------------------------------------------------------
! Calculate LAI for each canopy pseudo-zone
LaiSunZone = LAsun * PLTPOP * 0.0001 * 1 / FRSHAV
LaiShdZone = LAshd * PLTPOP * 0.0001 * 1 / FRSHAV
LaiGndZone = LAgnd * PLTPOP * 0.0001 * 1 / FRSHAV
!-----------------------------------------------------------------------
! Check whether canopy zones are over-filled, and if so move leaf area
! down a zone, beginning with newer (higher number) stalks.
Stalk = Smax + 1
DO WHILE ((LaiSunZone > LAITH1) .AND. (Stalk > 1.))
Stalk = Stalk - 1
IF (LeafDist(Stalk,Sun) > 0.) THEN
LeafDist(Stalk,Shade) = LeafDist(Stalk,Shade)
& + CanLmtFac * LeafDist(Stalk,Sun)
LeafDist(Stalk,Sun) = (1 - CanLmtFac) * LeafDist(Stalk,Sun)
LAsun = LAsun - CanLmtFac * LeafDist(Stalk,Sun)
LAshd = LAshd + CanLmtFac * LeafDist(Stalk,Sun)
LaiSunZone = LAsun * PLTPOP * 0.0001 * 1 / FRSHAV
LaiShdZone = LAshd * PLTPOP * 0.0001 * 1 / FRSHAV
END IF
END DO
!------------------------
Stalk = Smax +1
DO WHILE (LaiSunZone + LaiShdZone > LAITH2 .AND. Stalk > 1.)
Stalk = Stalk - 1
IF (LeafDist(Stalk,Shade) > 0.) THEN
LeafDist(Stalk,Ground) = LeafDist(Stalk,Ground)
& + CanLmtFac * LeafDist(Stalk,Shade)
LeafDist(Stalk,Shade)=(1-CanLmtFac) * LeafDist(Stalk,Shade)
LAshd = LAshd - CanLmtFac * LeafDist(Stalk,Shade)
LaiShdZone = LAshd * PLTPOP * 0.0001 * 1 / FRSHAV
END IF
END DO
!-----------------------------------------------------------------------
! Re-calculate cumulative leaf area in each canopy pseudo-zone
! IF (LeafAreaPlant(DAS-1) > 0) THEN
LAsun = 0.
LAshd = 0.
LAgnd = 0.
PlantLeafAreaTmp = 0.
DO Stalk = 1,Smax
LAsun = LAsun + LeafDist(Stalk,Sun)
LAshd = LAshd + LeafDist(Stalk,Shade)
LAgnd = LAgnd + LeafDist(Stalk,Ground)
PlantLeafAreaTmp = PlantLeafAreaTmp !for debugging FSR
& + LeafDist(Stalk,Sun)
& + LeafDist(Stalk,Shade)
& + LeafDist(Stalk,Ground)
END DO !Stalk = 1,Smax
!-----------------------------------------------------------------------
! Re-calculate LAI for each canopy pseudo-zone
!! DO Stalk = 1,Smax
LaiSunZone = LAsun * PLTPOP * 0.0001 * 1 / FRSHAV
LaiShdZone = LAshd * PLTPOP * 0.0001 * 1 / FRSHAV
LaiGndZone = LAgnd * PLTPOP * 0.0001 * 1 / FRSHAV
!! END DO ! Stalk = 1,Smax
!-----------------------------------------------------------------------
! Check whether canopy zones are under-filled, and if so move leaf area
! up a zone, beginning with older (lower number) stalks.
DO Stalk = 1,Smax
IF (LaiSunZone <= LAITH1 .AND.
& LeafDist(Stalk,Shade) > 0.) THEN
LeafDist(Stalk,Sun) = LeafDist(Stalk,Sun)
& + CanLmtFac * LeafDist(Stalk,Shade)
LeafDist(Stalk,Shade) = (1 - CanLmtFac)
& * LeafDist(Stalk,Shade)
LAsun = LAsun + CanLmtFac * LeafDist(Stalk,Shade)
LAshd = LAshd - CanLmtFac * LeafDist(Stalk,Shade)
LaiSunZone = LAsun * PLTPOP * 0.0001 * 1 / FRSHAV
LaiShdZone = LAshd * PLTPOP * 0.0001 * 1 / FRSHAV
ELSE IF (LaiSunZone + LaiShdZone <= LAITH2 .AND.
& LeafDist(Stalk,Ground) > 0.) THEN
LeafDist(Stalk,Shade) = LeafDist(Stalk,Shade)
& + CanLmtFac * LeafDist(Stalk,Ground)
LeafDist(Stalk,Ground) = (1 - CanLmtFac)
& * LeafDist(Stalk,Ground)
LAshd = LAshd + CanLmtFac * LeafDist(Stalk,Ground)
LAgnd = LAgnd - CanLmtFac * LeafDist(Stalk,Ground)
LaiShdZone = LAshd * PLTPOP * 0.0001 * 1 / FRSHAV
END IF
END DO
LAtmp(DAS) = LAsun + LAshd + LAgnd !FSR-temporary debug check
!-----------------------------------------------------------------------
! FSR-temporary debug check Was here
!-----------------------------------------------------------------------
! Calculate LI for each canopy pseudo-zone
IF (LAsun > 0) THEN
LIsunAvl = (1. - EXP(-KCAN * LaiSunZone))* FRSHAV
ELSE
LIsunAvl = 0.
END IF ! (LAsun > 0)
!--------
IF (LAshd > 0) THEN
LIshdAvl = ((1. - EXP(-KCAN*(LaiSunZone+LaiShdZone)))*FRSHAV)
& - LIsunAvl
ELSE
LIshdAvl = 0.
END IF ! (LAshd > 0)
!--------
IF (LAgnd > 0) THEN
!!! LIgndAvl = (LI - (LIsunAvl + LIshdAvl))* FRSHAV
LIgndAvl
& = ((1.- EXP(-KCAN*(LaiSunZone+LaiShdZone+LaiGndZone)))
& * FRSHAV)
& - (LIsunAvl+LIshdAvl)
!! LIgndAvl = (LIalt - (LIsunAvl + LIshdAvl))
LIgndAvl = MAX(LIgndAvl,0.)
ELSE
LIgndAvl = 0.
END IF ! (LAgnd > 0)
!-----------------------------------------------------------------------
! Distribute LI among stalks according to canopy zone and stalk
! leaf area.
IF (LeafAreaPlant(DAS-1) > 0) THEN !DAS-1 since DAS not calculated
!until CSP_Grow_Cane is called
DO Stalk = 1,Smax
! StkLI(Stalk) = 0.0 !Initialize daily to zero
! StkPG(Stalk) = 0.0
IF (LeafDist(Stalk,Sun) > 0) THEN
StkLI(Stalk,Sun) = LIsunAvl * 1/PLTPOP
& * LeafDist(Stalk,Sun)/LAsun
END IF !(LeafDist(Stalk,Sun) .GT. 0)
IF (LeafDist(Stalk,Shade) > 0) THEN
StkLI(Stalk,Shade) = LIshdAvl * 1/PLTPOP
& * LeafDist(Stalk,Shade)/LAshd
END IF !(LeafDist(Stalk,Shade) .GT. 0)
IF (LeafDist(Stalk,Ground) > 0) THEN
StkLI(Stalk,Ground) = LIgndAvl * 1/PLTPOP
& * LeafDist(Stalk,Ground)/LAgnd
END IF !(LeafDist(Stalk,Ground) .GT. 0)
DO Zone = 1,3
StkPG(Stalk,Zone) = PTSMAX * SLPF * StkLI(Stalk,Zone)
& * TLI * E_FAC * PGSLW * PRATIO * PGLFMX * SWFAC
LITOTAL = LITOTAL + StkLI(Stalk,Zone) * PLTPOP!Tmp for debug
PGT = PGT + StkPG(Stalk,Zone) * PLTPOP
END DO ! Zone = 1,Ground
END DO ! Stalk = 1,Smax
LIallZone = LIsunAvl + LIshdAvl + LIgndAvl
! PGT = 0.
END IF ! (LeafAreaPlant(DAS-1) > 0)
!-----------------------------------------------------------------------
! FSR-temporary debug check
! The following two LAI calculations will not be equal:
! XHLAI is equal to LAI2 at this point in the program, but
! equals LAI after a call to CSP_GROW_CANE). LI is
! calculated from XHLAI (input) and LITOTAL from StkLI
! (output)
LAI2 = PLTPOP * LeafAreaPlant(DAS-1) / 10000
LaiAllZone = (LaiSunZone + LaiShdZone + LaiGndZone)
LAItmp(DAS) = LAtmp(DAS) * PLTPOP * 0.0001 ! LaiAllZone
! LAItmp(DAS) = LaiAllZone
XLAI = LAtmp(DAS-1) * PLTPOP * 0.0001 / FRSHAV
!-----------------------------------------------------------------------
! Eliminate the production of CH2O while stalk is very small.
!!! IF (LeafNum(DAS,Stalk) <= 2) THEN !DAS-1
!!! StkPG(Stalk) = 0.0 !Not applied to PG calculation
!!! END IF !(LeafNum(DAS,Stalk) <= 2)
! For PG to equal sum of StkPG(Stalk), must eliminate EXCESS factor
! (below), as well as the code above which stops production of CH2O when
! stalks are very young. Neither of these are applied to PG, since
! EXCESS is now a (Stalk) array, and StkPG(j) = 0.0 was not applied
! to PG. To test the equivalence of PG and PGT, these two lines must be
! deactiviated. (Compare PG to PGT in CSP_PHOTO.OUT.) FSR
!
!!! StkPG(Stalk) = StkPG(Stalk) * EXCESS(Stalk)!Not applied to PG
! EXCESS deactivated. If it is to be restored, it needs to accomodate
! canopy zones. This may involve applying it only to the zone which is
! most likely to cause excess production, Zone 1. On the other hand, maybe
! the photosynthesis calculation should be refined, instead of EXCESS.
!
!-----------------------------------------------------------------------
C-----------------------------------------------------------------------
! Calculate ratio for assigning shoot carbon costs to existing stalks
DO Stalk = 1,Smax
TotalPG(stalk) = 0.
DO Zone = 1,3
TotalPG(stalk) = TotalPG(stalk) + StkPG(Stalk,Zone)
END DO ! Zone = 1,Ground
IF (TotalPG(stalk) > 0 .AND. PGT > 0) THEN
PgRatio(stalk) = TotalPG(Stalk) / (PGT/PLTPOP)
ELSE
PgRatio(Stalk) = 0.0
ENDIF ! (StkPG(Stalk) > 0 .AND. PGT >0)
END DO ! Stalk = 1,Smax
!---------------END STALK-BASED PHOTOSYNTHESIS METHOD---------------
!***********************************************************************
IF (INDEX('Y' ,ISWITCH%IDETG) > 0 .AND.
& INDEX('YDA',ISWITCH%IDETL) > 0) THEN
WRITE(PLUN,'(/1X,I7,1X,I4,10(1X,F5.2),2(1X,F6.2),3(1X,F4.1),
& 2(1X,F6.2),4(1X,F5.2),1X,F6.2,7(1X,F6.2))',
& ADVANCE="NO"),
& YRDOY, DAS, XHLAI, LaiAllZone, SHLAI, FRSHAV, LIalt,
& LI, LITOTAL, LIsunAvl, LIshdAvl,
& LIgndAvl,PG, PGT, LAsun/10000, LAshd/10000, LAgnd/10000,
& EXCESS(1), PAR, RNITP, SLAAD, SWFAC, TAVG, AGEFAC, PTSMAX,
& SLPF, TLI, AGEFCC, PGSLW, PRATIO, PGLFMX
!!! DO Stalk = 1,Smax
!!! WRITE(PLUN,'(2X,F4.2)', ADVANCE="NO") StkLI(Stalk)
!!! END DO
DO Stalk = 1,Smax
WRITE(PLUN,'(2X,F4.1)', ADVANCE="NO") TotalPG(Stalk)
END DO
ENDIF
! PG = PG * EXCESS ! EXCESS is now an array (Stalk)
! ENDIF !(DYNAMIC .EQ. INTEGR)
!***********************************************************************
!***********************************************************************
! END OF DYNAMIC IF CONSTRUCT
!***********************************************************************
!!! LITOTAL = 0.0 ! Temporary for debugging
ENDIF
!***********************************************************************
RETURN
END !SUBROUTINE CSP_PHOTO
C=======================================================================
C CSP_PHOTIP, Subroutine, N.B. Pickering
C Read input parameters for daily photosynthesis.
C-----------------------------------------------------------------------
C REVISION HISTORY
C 09/25/99 Written.
!-----------------------------------------------------------------------
C Output:
C Local :
!-----------------------------------------------------------------------
! Called from: CSP_PHOTO
! Calls : None
C=======================================================================
SUBROUTINE CSP_PHOTIP(FILEIO,
& CCEFF, CCMAX, CCMP, FNPGN, FNPGT, LIsun, !, KCAN
& LIshd, LNREF, PARMAX, PGREF, !, LMXSTD, PHTHRS10
& PHTMAX, PLTPOP, ROWSPC, TYPPGN, TYPPGT, XPGSLW,
& YPGSLW)
!-----------------------------------------------------------------------
IMPLICIT NONE
CHARACTER*1 BLANK
CHARACTER*3 TYPPGN, TYPPGT
CHARACTER*6 ERRKEY, SECTION
CHARACTER*12 FILEC
CHARACTER*30 FILEIO
CHARACTER*80 PATHCR,CHAR
CHARACTER*92 FILECC
INTEGER LUNIO, LINC, LNUM, FOUND
INTEGER II, PATHL, LUNCRP, ERR, ISECT
REAL CCEFF, CCMAX, CCMP, LIshd, LIsun, !, KCAN
& LNREF, PARMAX, PGREF, PHTMAX, !LMXSTD, PHTHRS10,
& PLTPOP, ROWSPC, XPGSLW(15) !, SLPF
REAL FNPGN(4),FNPGT(4)
REAL YPGSLW(15)
PARAMETER (BLANK = ' ')
PARAMETER (ERRKEY = 'PHOTIP')
!-----------------------------------------------------------------------
! Open and read FILEIO (DSSAT45.INP)
!-----------------------------------------------------------------------
CALL GETLUN('FILEIO', LUNIO)
OPEN (LUNIO, FILE = FILEIO,STATUS = 'OLD',IOSTAT=ERR)
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILEIO,0)
!-----------------------------------------------------------------------
READ(LUNIO,50,IOSTAT=ERR) FILEC, PATHCR; LNUM = 7
50 FORMAT(//////,15X,A12,1X,A80)
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILEIO,LNUM)
!-----------------------------------------------------------------------
C Read Planting Details Section
!-----------------------------------------------------------------------
SECTION = '*PLANT'
CALL FIND(LUNIO, SECTION, LINC, FOUND) ; LNUM = LNUM + LINC
IF (FOUND .EQ. 0) THEN
CALL ERROR(SECTION, 42, FILEIO, LNUM)
ELSE
READ(LUNIO,'(24X,F6.1,12X,F6.0)',IOSTAT=ERR)
& PLTPOP, ROWSPC ; LNUM = LNUM + 1
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILEIO,LNUM)
ENDIF
!-----------------------------------------------------------------------
C Read Cultivars Section
!-----------------------------------------------------------------------
SECTION = '*CULTI'
CALL FIND(LUNIO, SECTION, LINC, FOUND) ; LNUM = LNUM + LINC
IF (FOUND .EQ. 0) THEN
CALL ERROR(SECTION, 42, FILEIO, LNUM)
ELSE
READ(LUNIO,'(36X,F6.0,60X,2F6.3)',IOSTAT=ERR) PHTMAX, LIsun,
& LIshd
LNUM = LNUM + 1
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILEIO,LNUM)
ENDIF