[64] | 1 | ! allocation to the roots, stems, leaves, "fruits" and carbohydrate reserve. |
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| 2 | ! Reproduction: for the moment, this is simply a 10% "tax". |
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| 3 | ! This should depend on the limitations that the plant experiences. If the |
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| 4 | ! plant fares well, it will have fruits. However, this means that we should |
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| 5 | ! also "reward" the plants for having grown fruits by making the |
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| 6 | ! reproduction rate depend on the fruit growth of the past years. Otherwise, |
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| 7 | ! the fruit allocation would be a punishment for plants that are doing well. |
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| 8 | ! "calculates" root profiles (in fact, prescribes it for the moment). |
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| 9 | ! |
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| 10 | ! $Header: /home/ssipsl/CVSREP/ORCHIDEE/src_stomate/stomate_alloc.f90,v 1.10 2009/03/31 12:11:22 ssipsl Exp $ |
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| 11 | ! IPSL (2006) |
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| 12 | ! This software is governed by the CeCILL licence see ORCHIDEE/ORCHIDEE_CeCILL.LIC |
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| 13 | ! |
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| 14 | MODULE stomate_alloc |
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| 15 | |
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| 16 | ! modules used: |
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| 17 | |
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| 18 | USE ioipsl |
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| 19 | USE pft_parameters |
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| 20 | USE stomate_data |
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| 21 | USE constantes |
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| 22 | |
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| 23 | IMPLICIT NONE |
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| 24 | |
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| 25 | ! private & public routines |
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| 26 | |
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| 27 | PRIVATE |
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| 28 | PUBLIC alloc,alloc_clear |
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| 29 | |
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| 30 | ! first call |
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| 31 | LOGICAL, SAVE :: firstcall = .TRUE. |
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| 32 | CONTAINS |
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| 33 | SUBROUTINE alloc_clear |
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| 34 | firstcall = .TRUE. |
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| 35 | END SUBROUTINE alloc_clear |
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| 36 | |
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| 37 | SUBROUTINE alloc (npts, dt, & |
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| 38 | lai, veget_max, senescence, when_growthinit, & |
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| 39 | moiavail_week, tsoil_month, soilhum_month, & |
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| 40 | biomass, age, leaf_age, leaf_frac, rprof, f_alloc) |
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| 41 | |
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| 42 | ! |
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| 43 | ! 0 declarations |
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| 44 | ! |
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| 45 | |
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| 46 | ! 0.1 input |
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| 47 | |
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| 48 | ! Domain size |
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| 49 | INTEGER(i_std), INTENT(in) :: npts |
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| 50 | ! time step (days) |
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| 51 | REAL(r_std), INTENT(in) :: dt |
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| 52 | ! Leaf area index |
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| 53 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: lai |
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| 54 | ! "maximal" coverage fraction of a PFT ( = ind*cn_ind ) |
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| 55 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: veget_max |
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| 56 | ! is the plant senescent? (only for deciduous trees - carbohydrate reserve) |
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| 57 | LOGICAL, DIMENSION(npts,nvm), INTENT(in) :: senescence |
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| 58 | ! how many days ago was the beginning of the growing season |
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| 59 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: when_growthinit |
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| 60 | ! "weekly" moisture availability |
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| 61 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: moiavail_week |
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| 62 | ! "monthly" soil temperature (K) |
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| 63 | REAL(r_std), DIMENSION(npts,nbdl), INTENT(in) :: tsoil_month |
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| 64 | ! "monthly" soil humidity |
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| 65 | REAL(r_std), DIMENSION(npts,nbdl), INTENT(in) :: soilhum_month |
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| 66 | ! age (days) |
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| 67 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: age |
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| 68 | |
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| 69 | ! 0.2 modified fields |
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| 70 | |
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| 71 | ! biomass (gC/m**2) |
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| 72 | REAL(r_std), DIMENSION(npts,nvm,nparts), INTENT(inout) :: biomass |
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| 73 | ! leaf age (days) |
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| 74 | REAL(r_std), DIMENSION(npts,nvm,nleafages), INTENT(inout) :: leaf_age |
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| 75 | ! fraction of leaves in leaf age class |
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| 76 | REAL(r_std), DIMENSION(npts,nvm,nleafages), INTENT(inout) :: leaf_frac |
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| 77 | |
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| 78 | ! 0.3 output |
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| 79 | |
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| 80 | ! root depth. This will, one day, be a prognostic variable. It will be calculated by |
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| 81 | ! STOMATE (save in restart file & give to hydrology module!). For the moment, it |
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| 82 | ! is prescribed. |
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| 83 | REAL(r_std), DIMENSION(npts,nvm), INTENT(inout) :: rprof |
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| 84 | ! fraction that goes into plant part |
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| 85 | REAL(r_std), DIMENSION(npts,nvm,nparts), INTENT(out) :: f_alloc |
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| 86 | |
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| 87 | ! 0.4 local |
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| 88 | |
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| 89 | ! below this lai, the carbohydrate reserve is used |
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| 90 | REAL(r_std), DIMENSION(nvm) :: lai_happy |
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| 91 | ! limiting factor light |
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| 92 | REAL(r_std), DIMENSION(npts) :: limit_L |
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| 93 | ! limiting factor nitrogen |
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| 94 | REAL(r_std), DIMENSION(npts) :: limit_N |
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| 95 | ! factors determining limit_N: 1/ temperature |
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| 96 | REAL(r_std), DIMENSION(npts) :: limit_N_temp |
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| 97 | ! factors determining limit_N: 2/ humidity |
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| 98 | REAL(r_std), DIMENSION(npts) :: limit_N_hum |
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| 99 | ! limiting factor water |
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| 100 | REAL(r_std), DIMENSION(npts) :: limit_W |
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| 101 | ! limiting factor in soil (nitrogen or water) |
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| 102 | REAL(r_std), DIMENSION(npts) :: limit_WorN |
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| 103 | ! limit: strongest limitation amongst limit_N, limit_W and limit_L |
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| 104 | REAL(r_std), DIMENSION(npts) :: limit |
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| 105 | ! soil temperature used for N parameterization |
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| 106 | REAL(r_std), DIMENSION(npts) :: t_nitrogen |
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| 107 | ! soil humidity used for N parameterization |
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| 108 | REAL(r_std), DIMENSION(npts) :: h_nitrogen |
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| 109 | ! integration constant for vertical profiles |
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| 110 | REAL(r_std), DIMENSION(npts) :: rpc |
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| 111 | ! ratio between leaf-allocation and (leaf+sapwood+root)-allocation |
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| 112 | REAL(r_std), DIMENSION(npts) :: LtoLSR |
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| 113 | ! ratio between sapwood-allocation and (leaf+sapwood+root)-allocation |
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| 114 | REAL(r_std), DIMENSION(npts) :: StoLSR |
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| 115 | ! ratio between root-allocation and (leaf+sapwood+root)-allocation |
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| 116 | REAL(r_std), DIMENSION(npts) :: RtoLSR |
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| 117 | ! rescaling factor for carbohydrate reserve allocation |
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| 118 | REAL(r_std), DIMENSION(npts) :: carb_rescale |
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| 119 | ! mass taken from carbohydrate reserve (gC/m**2) |
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| 120 | REAL(r_std), DIMENSION(npts) :: use_reserve |
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| 121 | ! mass taken from carbohydrate reserve and put into leaves (gC/m**2) |
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| 122 | REAL(r_std), DIMENSION(npts) :: transloc_leaf |
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| 123 | ! mass in youngest leaf age class (gC/m**2) |
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| 124 | REAL(r_std), DIMENSION(npts) :: leaf_mass_young |
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| 125 | ! old leaf biomass (gC/m**2) |
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| 126 | REAL(r_std), DIMENSION(npts,nvm) :: lm_old |
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| 127 | ! maximum time (d) during which reserve is used |
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| 128 | REAL(r_std) :: reserve_time |
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| 129 | ! lai on natural part of the grid cell, or of this agricultural PFT |
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| 130 | REAL(r_std), DIMENSION(npts,nvm) :: lai_around |
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| 131 | ! vegetation cover of natural PFTs on the grid cell (agriculture masked) |
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| 132 | REAL(r_std), DIMENSION(npts,nvm) :: veget_max_nat |
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| 133 | ! total natural vegetation cover on natural part of the grid cell |
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| 134 | REAL(r_std), DIMENSION(npts) :: natveg_tot |
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| 135 | ! average LAI on natural part of the grid cell |
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| 136 | REAL(r_std), DIMENSION(npts) :: lai_nat |
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| 137 | ! intermediate array for looking for minimum |
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| 138 | REAL(r_std), DIMENSION(npts) :: zdiff_min |
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| 139 | ! fraction of sapwood allocation above ground (SHOULD BE CALCULATED !!!!) |
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| 140 | REAL(r_std), DIMENSION(npts) :: alloc_sap_above |
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| 141 | ! soil levels (m) |
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| 142 | REAL(r_std), SAVE, DIMENSION(0:nbdl) :: z_soil |
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| 143 | ! Index |
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| 144 | INTEGER(i_std) :: i,j,l,m |
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| 145 | |
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| 146 | ! ========================================================================= |
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| 147 | |
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| 148 | IF (bavard.GE.3) WRITE(numout,*) 'Entering alloc' |
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| 149 | |
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| 150 | ! |
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| 151 | ! 1 Initialization |
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| 152 | ! |
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| 153 | L0 = 1. - R0 - S0 ! defined in constantes.f90 |
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| 154 | IF ((L0 .LT. zero) .OR. (S0 .EQ. un)) STOP 'L0 negative or division by zero if S0 = 1' |
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| 155 | |
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| 156 | ! |
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| 157 | ! 1.1 first call |
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| 158 | ! |
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| 159 | |
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| 160 | IF ( firstcall ) THEN |
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| 161 | |
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| 162 | ! 1.1.1 soil levels |
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| 163 | |
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| 164 | z_soil(0) = 0. |
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| 165 | z_soil(1:nbdl) = diaglev(1:nbdl) |
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| 166 | |
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| 167 | ! 1.1.2 info about flags and parameters. |
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| 168 | |
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| 169 | WRITE(numout,*) 'alloc:' |
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| 170 | |
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| 171 | WRITE(numout,'(a,$)') ' > We' |
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| 172 | IF ( .NOT. ok_minres ) WRITE(numout,'(a,$)') ' do NOT' |
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| 173 | WRITE(numout,*) 'try to reach a minumum reservoir when severely stressed.' |
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| 174 | |
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| 175 | WRITE(numout,*) ' > Time to put initial leaf mass on (d): ',tau_leafinit |
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| 176 | |
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| 177 | WRITE(numout,*) ' > scaling depth for nitrogen limitation (m): ', & |
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| 178 | z_nitrogen |
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| 179 | |
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| 180 | WRITE(numout,*) ' > sap allocation above the ground / total sap allocation: ' |
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| 181 | WRITE(numout,*) ' trees:', alloc_sap_above_tree |
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| 182 | WRITE(numout,*) ' grasses:', alloc_sap_above_grass |
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| 183 | |
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| 184 | WRITE(numout,*) ' > standard root alloc fraction: ', R0 |
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| 185 | |
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| 186 | WRITE(numout,*) ' > standard sapwood alloc fraction: ', S0 |
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| 187 | |
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| 188 | WRITE(numout,*) ' > standard fruit allocation: ', f_fruit |
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| 189 | |
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| 190 | WRITE(numout,*) ' > minimum/maximum leaf alloc fraction: ', min_LtoLSR,max_LtoLSR |
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| 191 | |
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| 192 | WRITE(numout,*) ' > maximum time (d) during which reserve is used:' |
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| 193 | WRITE(numout,*) ' trees:',reserve_time_tree |
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| 194 | WRITE(numout,*) ' grasses:',reserve_time_grass |
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| 195 | |
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| 196 | firstcall = .FALSE. |
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| 197 | |
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| 198 | ENDIF |
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| 199 | |
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| 200 | ! |
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| 201 | ! 1.2 initialize output |
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| 202 | ! |
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| 203 | |
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| 204 | f_alloc(:,:,:) = 0.0 |
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| 205 | f_alloc(:,:,icarbres) = 1.0 |
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| 206 | ! |
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| 207 | ! 1.3 Convolution of the temperature and humidity profiles with some kind of profile |
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| 208 | ! of microbial density gives us a representative temperature and humidity |
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| 209 | ! |
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| 210 | |
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| 211 | ! 1.3.1 temperature |
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| 212 | |
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| 213 | ! 1.3.1.1 rpc is an integration constant such that the integral of the root profile is 1. |
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| 214 | rpc(:) = 1. / ( 1. - EXP( -z_soil(nbdl) / z_nitrogen ) ) |
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| 215 | |
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| 216 | ! 1.3.1.2 integrate over the nbdl levels |
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| 217 | |
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| 218 | t_nitrogen(:) = 0. |
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| 219 | |
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| 220 | DO l = 1, nbdl |
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| 221 | |
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| 222 | t_nitrogen(:) = & |
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| 223 | t_nitrogen(:) + tsoil_month(:,l) * rpc(:) * & |
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| 224 | ( EXP( -z_soil(l-1)/z_nitrogen ) - EXP( -z_soil(l)/z_nitrogen ) ) |
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| 225 | |
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| 226 | ENDDO |
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| 227 | |
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| 228 | ! 1.3.2 moisture |
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| 229 | |
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| 230 | ! 1.3.2.1 rpc is an integration constant such that the integral of the root profile is 1. |
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| 231 | rpc(:) = 1. / ( 1. - EXP( -z_soil(nbdl) / z_nitrogen ) ) |
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| 232 | |
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| 233 | ! 1.3.2.2 integrate over the nbdl levels |
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| 234 | |
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| 235 | h_nitrogen(:) = 0.0 |
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| 236 | |
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| 237 | DO l = 1, nbdl |
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| 238 | |
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| 239 | h_nitrogen(:) = & |
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| 240 | h_nitrogen(:) + soilhum_month(:,l) * rpc(:) * & |
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| 241 | ( EXP( -z_soil(l-1)/z_nitrogen ) - EXP( -z_soil(l)/z_nitrogen ) ) |
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| 242 | |
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| 243 | ENDDO |
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| 244 | |
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| 245 | ! |
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| 246 | ! 1.4 for light limitation: lai on natural part of the grid cell or lai of this |
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| 247 | ! agricultural PFT |
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| 248 | ! |
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| 249 | |
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| 250 | ! mask agricultural vegetation |
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| 251 | ! mean LAI on natural part |
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| 252 | |
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| 253 | natveg_tot(:) = 0.0 |
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| 254 | lai_nat(:) = 0.0 |
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| 255 | |
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| 256 | DO j = 2, nvm |
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| 257 | |
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| 258 | IF ( natural(j) ) THEN |
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| 259 | veget_max_nat(:,j) = veget_max(:,j) |
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| 260 | ELSE |
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| 261 | veget_max_nat(:,j) = 0.0 |
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| 262 | ENDIF |
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| 263 | |
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| 264 | ! sum up fraction of natural space covered by vegetation |
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| 265 | natveg_tot(:) = natveg_tot(:) + veget_max_nat(:,j) |
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| 266 | |
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| 267 | ! sum up lai |
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| 268 | lai_nat(:) = lai_nat(:) + veget_max_nat(:,j) * lai(:,j) |
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| 269 | |
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| 270 | ENDDO |
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| 271 | |
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| 272 | DO j = 2, nvm |
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| 273 | |
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| 274 | IF ( natural(j) ) THEN |
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| 275 | lai_around(:,j) = lai_nat(:) |
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| 276 | ELSE |
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| 277 | lai_around(:,j) = lai(:,j) |
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| 278 | ENDIF |
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| 279 | |
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| 280 | ENDDO |
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| 281 | |
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| 282 | ! |
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| 283 | ! 1.5 LAI below which carbohydrate reserve is used |
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| 284 | ! |
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| 285 | |
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| 286 | lai_happy(:) = lai_max(:) * lai_max_to_happy |
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| 287 | |
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| 288 | ! |
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| 289 | ! 2 Use carbohydrate reserve |
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| 290 | ! This time constant implicitly takes into account the dispersion of the budburst |
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| 291 | ! data. Therefore, it might be decreased at lower resolution. |
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| 292 | ! |
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| 293 | |
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| 294 | ! save old leaf mass |
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| 295 | |
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| 296 | lm_old(:,:) = biomass(:,:,ileaf) |
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| 297 | |
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| 298 | DO j = 2, nvm |
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| 299 | |
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| 300 | ! |
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| 301 | ! 2.1 determine mass to be translocated to leaves and roots |
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| 302 | ! |
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| 303 | |
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| 304 | ! determine maximum time during which reserve is used |
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| 305 | |
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| 306 | IF ( tree(j) ) THEN |
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| 307 | reserve_time = reserve_time_tree |
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| 308 | ELSE |
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| 309 | reserve_time = reserve_time_grass |
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| 310 | ENDIF |
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| 311 | |
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| 312 | ! conditions: 1/ plant must not be senescent |
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| 313 | ! 2/ lai must be relatively low |
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| 314 | ! 3/ must be at the beginning of the growing season |
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| 315 | |
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| 316 | WHERE ( ( biomass(:,j,ileaf) .GT. 0.0 ) .AND. & |
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| 317 | ( .NOT. senescence(:,j) ) .AND. & |
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| 318 | ( lai(:,j) .LT. lai_happy(j) ) .AND. & |
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| 319 | ( when_growthinit(:,j) .LT. reserve_time ) ) |
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| 320 | |
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| 321 | ! determine mass to put on |
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| 322 | use_reserve(:) = & |
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| 323 | MIN( biomass(:,j,icarbres), & |
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| 324 | deux * dt/tau_leafinit * lai_happy(j)/ sla(j) ) |
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| 325 | |
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| 326 | ! grow leaves and fine roots |
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| 327 | |
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| 328 | transloc_leaf(:) = L0/(L0+R0) * use_reserve(:) |
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| 329 | |
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| 330 | biomass(:,j,ileaf) = biomass(:,j,ileaf) + transloc_leaf(:) |
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| 331 | biomass(:,j,iroot) = biomass(:,j,iroot) + ( use_reserve(:) - transloc_leaf(:) ) |
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| 332 | |
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| 333 | ! decrease reserve mass |
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| 334 | |
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| 335 | biomass(:,j,icarbres) = biomass(:,j,icarbres) - use_reserve(:) |
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| 336 | |
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| 337 | ELSEWHERE |
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| 338 | |
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| 339 | transloc_leaf(:) = 0.0 |
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| 340 | |
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| 341 | ENDWHERE |
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| 342 | |
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| 343 | ! |
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| 344 | ! 2.2 update leaf age |
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| 345 | ! |
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| 346 | |
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| 347 | ! 2.2.1 Decrease leaf age in youngest class. |
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| 348 | |
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| 349 | leaf_mass_young(:) = leaf_frac(:,j,1) * lm_old(:,j) + transloc_leaf(:) |
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| 350 | |
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| 351 | WHERE ( ( transloc_leaf(:) .GT. min_stomate ) .AND. ( leaf_mass_young(:) .GT. min_stomate ) ) |
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| 352 | |
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| 353 | leaf_age(:,j,1) = MAX( zero, leaf_age(:,j,1) * ( leaf_mass_young(:) - transloc_leaf(:) ) / & |
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| 354 | leaf_mass_young(:) ) |
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| 355 | |
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| 356 | ENDWHERE |
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| 357 | |
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| 358 | ! 2.2.2 new age class fractions (fraction in youngest class increases) |
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| 359 | |
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| 360 | ! 2.2.2.1 youngest class: new mass in youngest class divided by total new mass |
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| 361 | |
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| 362 | WHERE ( biomass(:,j,ileaf) .GT. min_stomate ) |
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| 363 | |
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| 364 | leaf_frac(:,j,1) = leaf_mass_young(:) / biomass(:,j,ileaf) |
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| 365 | |
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| 366 | ENDWHERE |
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| 367 | |
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| 368 | ! 2.2.2.2 other classes: old mass in leaf age class divided by new mass |
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| 369 | |
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| 370 | DO m = 2, nleafages |
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| 371 | |
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| 372 | WHERE ( biomass(:,j,ileaf) .GT. min_stomate ) |
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| 373 | |
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| 374 | leaf_frac(:,j,m) = leaf_frac(:,j,m) * lm_old(:,j) / biomass(:,j,ileaf) |
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| 375 | |
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| 376 | ENDWHERE |
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| 377 | |
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| 378 | ENDDO |
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| 379 | |
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| 380 | ENDDO ! loop over PFTs |
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| 381 | |
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| 382 | ! |
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| 383 | ! 3 Calculate fractional allocation. |
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| 384 | ! The fractions of NPP allocated to the different compartments depend on the |
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| 385 | ! availability of light, water, and nitrogen. |
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| 386 | ! |
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| 387 | |
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| 388 | DO j = 2, nvm |
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| 389 | |
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| 390 | RtoLSR(:)=0 |
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| 391 | LtoLSR(:)=0 |
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| 392 | StoLSR(:)=0 |
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| 393 | |
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| 394 | ! for the moment, fixed partitioning between above and below the ground |
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| 395 | ! modified by JO/NV/PF for changing partitioning with stand age |
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| 396 | ! we could have alloc_sap_above(npts,nvm) but we have only |
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| 397 | ! alloc_sap_above(npts) as we make a loop over j=2,nvm |
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| 398 | ! |
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| 399 | IF ( tree(j) ) THEN |
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| 400 | |
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| 401 | alloc_sap_above (:) = alloc_min(j)+(alloc_max(j)-alloc_min(j))*(1.-EXP(-age(:,j)/demi_alloc(j))) |
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| 402 | |
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| 403 | !IF (j .EQ. 3) WRITE(*,*) '%allocated above = 'alloc_sap_above(1),'age = ',age(1,j) |
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| 404 | ELSE |
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| 405 | alloc_sap_above(:) = alloc_sap_above_grass |
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| 406 | ENDIF |
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| 407 | |
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| 408 | ! only where leaves are on |
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| 409 | |
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| 410 | WHERE ( biomass(:,j,ileaf) .GT. min_stomate ) |
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| 411 | |
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| 412 | ! |
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| 413 | ! 3.1 Limiting factors: weak value = strong limitation |
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| 414 | ! |
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| 415 | |
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| 416 | ! 3.1.1 Light: depends on mean lai on the natural part of the |
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| 417 | ! grid box (light competition). |
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| 418 | ! For agricultural PFTs, take its own lai for both parts. |
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| 419 | !MM, NV |
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| 420 | WHERE( lai_around(:,j) < 10 ) |
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| 421 | limit_L(:) = MAX( 0.1_r_std, EXP( -undemi * lai_around(:,j) ) ) |
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| 422 | ELSEWHERE |
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| 423 | limit_L(:) = 0.1_r_std |
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| 424 | ENDWHERE |
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| 425 | ! 3.1.2 Water |
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| 426 | |
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| 427 | limit_W(:) = MAX( 0.1_r_std, MIN( un, moiavail_week(:,j) ) ) |
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| 428 | |
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| 429 | ! 3.1.3 Nitrogen supply: depends on water and temperature |
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| 430 | ! Agricultural PFTs can be limited by Nitrogen for the moment ... |
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| 431 | ! Replace this once there is a nitrogen cycle in STOMATE ! |
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| 432 | |
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| 433 | ! 3.1.3.1 water |
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| 434 | |
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| 435 | limit_N_hum(:) = MAX( undemi, MIN( un, h_nitrogen(:) ) ) |
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| 436 | |
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| 437 | ! 3.1.3.2 temperature |
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| 438 | |
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| 439 | limit_N_temp(:) = 2.**((t_nitrogen(:)-ZeroCelsius-25.)/10.) |
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| 440 | limit_N_temp(:) = MAX( 0.1_r_std, MIN( un, limit_N_temp(:) ) ) |
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| 441 | |
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| 442 | ! 3.1.3.3 combine water and temperature factors to get nitrogen limitation |
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| 443 | |
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| 444 | limit_N(:) = MAX( 0.1_r_std, MIN( un, limit_N_hum(:) * limit_N_temp(:) ) ) |
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| 445 | |
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| 446 | ! 3.1.4 Among water and nitrogen, take the one that is more limited |
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| 447 | |
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| 448 | limit_WorN(:) = MIN( limit_W(:), limit_N(:) ) |
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| 449 | |
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| 450 | ! 3.1.5 strongest limitation |
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| 451 | |
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| 452 | limit(:) = MIN( limit_WorN(:), limit_L(:) ) |
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| 453 | |
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| 454 | ! |
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| 455 | ! 3.2 Ratio between allocation to leaves, sapwood and roots |
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| 456 | ! |
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| 457 | |
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| 458 | ! preliminary root allocation |
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| 459 | |
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| 460 | RtoLSR(:) = & |
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| 461 | MAX( .15_r_std, & |
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| 462 | R0 * trois * limit_L(:) / ( limit_L(:) + deux * limit_WorN(:) ) ) |
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| 463 | |
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| 464 | ! sapwood allocation |
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| 465 | |
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| 466 | StoLSR(:) = S0 * 3. * limit_WorN(:) / ( 2. * limit_L(:) + limit_WorN(:) ) |
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| 467 | |
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| 468 | ! leaf allocation |
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| 469 | |
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| 470 | LtoLSR(:) = 1. - RtoLSR(:) - StoLSR(:) |
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| 471 | LtoLSR(:) = MAX( min_LtoLSR, MIN( max_LtoLSR, LtoLSR(:) ) ) |
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| 472 | |
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| 473 | ! roots: the rest |
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| 474 | |
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| 475 | RtoLSR(:) = 1. - LtoLSR(:) - StoLSR(:) |
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| 476 | |
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| 477 | ENDWHERE |
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| 478 | |
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| 479 | ! no leaf allocation if LAI beyond maximum LAI. Biomass then goes into sapwood |
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| 480 | |
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| 481 | WHERE ( (biomass(:,j,ileaf) .GT. min_stomate) .AND. (lai(:,j) .GT. lai_max(j)) ) |
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| 482 | |
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| 483 | StoLSR(:) = StoLSR(:) + LtoLSR(:) |
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| 484 | |
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| 485 | LtoLSR(:) = 0.0 |
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| 486 | |
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| 487 | ENDWHERE |
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| 488 | |
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| 489 | ! |
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| 490 | ! 3.3 final allocation |
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| 491 | ! |
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| 492 | |
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| 493 | DO i = 1, npts |
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| 494 | |
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| 495 | IF ( biomass(i,j,ileaf) .GT. min_stomate ) THEN |
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| 496 | |
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| 497 | IF ( senescence(i,j) ) THEN |
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| 498 | |
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| 499 | ! 3.3.1 senescent: everything goes into carbohydrate reserve |
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| 500 | |
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| 501 | f_alloc(i,j,icarbres) = 1.0 |
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| 502 | |
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| 503 | ELSE |
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| 504 | |
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| 505 | ! 3.3.2 in growing season |
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| 506 | |
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| 507 | ! to fruits |
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| 508 | f_alloc(i,j,ifruit) = f_fruit |
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| 509 | |
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| 510 | ! allocation to the reserve is proportional to the leaf and root allocation. |
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| 511 | ! Leaf, root, and sap allocation are rescaled. |
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| 512 | ! No allocation to reserve if there is much biomass in it |
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| 513 | ! (more than the maximum LAI: in that case, rescale=1) |
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| 514 | |
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| 515 | IF ( ( biomass(i,j,icarbres)*sla(j) ) .LT. 2*lai_max(j) ) THEN |
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| 516 | carb_rescale(i) = 1. / ( 1. + ecureuil(j) * ( LtoLSR(i) + RtoLSR(i) ) ) |
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| 517 | ELSE |
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| 518 | carb_rescale(i) = 1. |
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| 519 | ENDIF |
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| 520 | |
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| 521 | f_alloc(i,j,ileaf) = LtoLSR(i) * ( 1.-f_alloc(i,j,ifruit) ) * carb_rescale(i) |
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| 522 | |
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| 523 | f_alloc(i,j,isapabove) = StoLSR(i) * alloc_sap_above(i) * & |
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| 524 | ( 1. - f_alloc(i,j,ifruit) ) * carb_rescale(i) |
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| 525 | f_alloc(i,j,isapbelow) = StoLSR(i) * ( 1. - alloc_sap_above(i) ) * & |
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| 526 | ( 1. - f_alloc(i,j,ifruit) ) * carb_rescale(i) |
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| 527 | |
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| 528 | f_alloc(i,j,iroot) = RtoLSR(i) * ( 1.-f_alloc(i,j,ifruit) ) * carb_rescale(i) |
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| 529 | |
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| 530 | ! this is equivalent to: |
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| 531 | ! reserve alloc = ecureuil*(LtoLSR+StoLSR)*(1-fruit_alloc)*carb_rescale |
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| 532 | f_alloc(i,j,icarbres) = ( 1. - carb_rescale(i) ) * ( 1.-f_alloc(i,j,ifruit) ) |
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| 533 | |
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| 534 | ENDIF ! senescent? |
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| 535 | |
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| 536 | ENDIF ! there are leaves |
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| 537 | |
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| 538 | ENDDO ! Fortran95: double WHERE construct |
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| 539 | |
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| 540 | ENDDO ! loop over PFTs |
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| 541 | |
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| 542 | ! |
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| 543 | ! 4 root profile |
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| 544 | ! |
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| 545 | |
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| 546 | |
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| 547 | IF (bavard.GE.4) WRITE(numout,*) 'Leaving alloc' |
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| 548 | |
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| 549 | END SUBROUTINE alloc |
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| 550 | |
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| 551 | |
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| 552 | END MODULE stomate_alloc |
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