[8] | 1 | ! This subroutine calculates: |
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| 2 | ! 1-6 : leaf senescence, climatic and as a function of leaf age. New LAI. |
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| 3 | ! 7 : herbivores |
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| 4 | ! 8 : fruit turnover for trees. |
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| 5 | ! 9 : sapwood conversion. |
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| 6 | ! |
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| 7 | ! $Header: /home/ssipsl/CVSREP/ORCHIDEE/src_stomate/stomate_turnover.f90,v 1.13 2010/04/06 15:44:01 ssipsl Exp $ |
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| 8 | ! IPSL (2006) |
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| 9 | ! This software is governed by the CeCILL licence see ORCHIDEE/ORCHIDEE_CeCILL.LIC |
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| 10 | ! |
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| 11 | MODULE stomate_turnover |
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| 12 | |
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| 13 | ! modules used: |
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| 14 | |
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| 15 | USE ioipsl |
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| 16 | USE stomate_constants |
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| 17 | USE constantes_veg |
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| 18 | |
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| 19 | IMPLICIT NONE |
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| 20 | |
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| 21 | ! private & public routines |
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| 22 | |
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| 23 | PRIVATE |
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| 24 | PUBLIC turn, turn_clear |
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| 25 | |
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| 26 | ! first call |
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| 27 | LOGICAL, SAVE :: firstcall = .TRUE. |
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| 28 | |
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| 29 | CONTAINS |
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| 30 | |
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| 31 | SUBROUTINE turn_clear |
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| 32 | firstcall=.TRUE. |
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| 33 | END SUBROUTINE turn_clear |
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| 34 | |
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| 35 | SUBROUTINE turn (npts, dt, PFTpresent, & |
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| 36 | herbivores, & |
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| 37 | maxmoiavail_lastyear, minmoiavail_lastyear, & |
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| 38 | moiavail_week, moiavail_month, tlong_ref, t2m_month, t2m_week, veget_max, & |
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| 39 | leaf_age, leaf_frac, age, lai, biomass, & |
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| 40 | turnover, senescence,turnover_time) |
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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 in days |
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| 51 | REAL(r_std), INTENT(in) :: dt |
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| 52 | ! PFT exists |
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| 53 | LOGICAL, DIMENSION(npts,nvm), INTENT(in) :: PFTpresent |
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| 54 | ! time constant of probability of a leaf to be eaten by a herbivore (days) |
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| 55 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: herbivores |
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| 56 | ! last year's maximum moisture availability |
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| 57 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: maxmoiavail_lastyear |
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| 58 | ! last year's minimum moisture availability |
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| 59 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: minmoiavail_lastyear |
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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" moisture availability |
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| 63 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: moiavail_month |
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| 64 | ! "long term" 2 meter reference temperatures (K) |
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| 65 | REAL(r_std), DIMENSION(npts), INTENT(in) :: tlong_ref |
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| 66 | ! "monthly" 2-meter temperatures (K) |
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| 67 | REAL(r_std), DIMENSION(npts), INTENT(in) :: t2m_month |
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| 68 | ! "weekly" 2 meter temperatures (K) |
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| 69 | REAL(r_std), DIMENSION(npts), INTENT(in) :: t2m_week |
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| 70 | ! "maximal" coverage fraction of a PFT (LAI -> infinity) on ground |
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| 71 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: veget_max |
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| 72 | |
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| 73 | ! 0.2 modified fields |
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| 74 | |
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| 75 | ! age of the leaves (days) |
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| 76 | REAL(r_std), DIMENSION(npts,nvm,nleafages), INTENT(inout) :: leaf_age |
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| 77 | ! fraction of leaves in leaf age class |
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| 78 | REAL(r_std), DIMENSION(npts,nvm,nleafages), INTENT(inout) :: leaf_frac |
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| 79 | ! age (years) |
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| 80 | REAL(r_std), DIMENSION(npts,nvm), INTENT(inout) :: age |
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| 81 | ! leaf area index |
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| 82 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: lai |
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| 83 | ! biomass (gC/(m**2 of ground)) |
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| 84 | REAL(r_std), DIMENSION(npts,nvm,nparts), INTENT(inout) :: biomass |
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| 85 | ! turnover_time of grasse |
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| 86 | REAL(r_std), DIMENSION(npts,nvm), INTENT(inout) :: turnover_time |
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| 87 | |
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| 88 | ! 0.3 output |
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| 89 | |
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| 90 | ! Turnover rates (gC/day/(m**2 of ground)) |
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| 91 | REAL(r_std), DIMENSION(npts,nvm,nparts), INTENT(out) :: turnover |
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| 92 | ! is the plant senescent? |
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| 93 | ! (interesting only for deciduous trees: carbohydrate reserve) |
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| 94 | LOGICAL, DIMENSION(npts,nvm), INTENT(out) :: senescence |
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| 95 | |
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| 96 | ! 0.4 local |
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| 97 | |
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| 98 | !!$ ! minimum leaf age for senescence (d) |
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| 99 | !!$ REAL(r_std), PARAMETER :: min_leaf_age = 30. |
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| 100 | ! mean age of the leaves (days) |
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| 101 | REAL(r_std), DIMENSION(npts,nvm) :: leaf_meanage |
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| 102 | ! Intermediate variable for turnover |
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| 103 | REAL(r_std), DIMENSION(npts) :: dturnover |
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| 104 | ! critical moisture availability, function of last year's moisture availability |
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| 105 | REAL(r_std), DIMENSION(npts) :: moiavail_crit |
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| 106 | ! long term annual mean temperature, C |
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| 107 | REAL(r_std), DIMENSION(npts) :: tl |
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| 108 | ! critical senescence temperature, function of long term annual temperature (K) |
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| 109 | REAL(r_std), DIMENSION(npts) :: t_crit |
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| 110 | ! shed the remaining leaves? |
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| 111 | LOGICAL, DIMENSION(npts) :: shed_rest |
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| 112 | ! Sapwood conversion (gC/day(m**2 of ground)) |
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| 113 | REAL(r_std), DIMENSION(npts) :: sapconv |
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| 114 | ! old heartwood mass (gC/(m**2 of ground)) |
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| 115 | REAL(r_std), DIMENSION(npts) :: hw_old |
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| 116 | ! new heartwood mass (gC/(m**2 of ground)) |
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| 117 | REAL(r_std), DIMENSION(npts) :: hw_new |
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| 118 | ! old leaf mass (gC/(m**2 of ground)) |
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| 119 | REAL(r_std), DIMENSION(npts) :: lm_old |
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| 120 | ! leaf mass change for each age class |
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| 121 | REAL(r_std), DIMENSION(npts,nleafages) :: delta_lm |
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| 122 | ! turnover rate |
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| 123 | REAL(r_std), DIMENSION(npts) :: turnover_rate |
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| 124 | ! critical leaf age (d) |
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| 125 | REAL(r_std), DIMENSION(npts,nvm) :: leaf_age_crit |
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| 126 | ! instantaneous turnover time |
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| 127 | REAL(r_std), DIMENSION(npts,nvm) :: new_turnover_time |
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| 128 | ! Index |
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| 129 | INTEGER(i_std) :: j,m |
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| 130 | |
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| 131 | ! ========================================================================= |
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| 132 | |
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| 133 | IF (bavard.GE.3) WRITE(numout,*) 'Entering turnover' |
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| 134 | |
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| 135 | ! |
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| 136 | ! 1 messages |
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| 137 | ! |
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| 138 | |
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| 139 | IF ( firstcall ) THEN |
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| 140 | |
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| 141 | WRITE(numout,*) 'turnover:' |
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| 142 | |
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| 143 | WRITE(numout,*) ' > minimum mean leaf age for senescence (d): ',pheno_crit%min_leaf_age_for_senescence |
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| 144 | |
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| 145 | firstcall = .FALSE. |
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| 146 | |
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| 147 | |
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| 148 | ENDIF |
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| 149 | |
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| 150 | ! |
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| 151 | ! 2 Initializations |
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| 152 | ! |
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| 153 | |
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| 154 | ! |
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| 155 | ! 2.1 set output to zero |
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| 156 | ! |
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| 157 | |
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| 158 | turnover(:,:,:) = zero |
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| 159 | new_turnover_time=zero |
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| 160 | senescence(:,:) = .FALSE. |
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| 161 | |
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| 162 | ! |
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| 163 | ! 2.2 mean leaf age. Should actually be recalculated at the end of this routine, |
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| 164 | ! but it does not change too fast. |
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| 165 | ! |
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| 166 | |
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| 167 | leaf_meanage(:,:) = 0.0 |
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| 168 | |
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| 169 | DO m = 1, nleafages |
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| 170 | leaf_meanage(:,:) = leaf_meanage(:,:) + leaf_age(:,:,m) * leaf_frac(:,:,m) |
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| 171 | ENDDO |
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| 172 | |
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| 173 | ! |
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| 174 | ! 3 different types of "climatic" leaf senescence |
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| 175 | ! does not change age structure. |
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| 176 | ! |
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| 177 | |
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| 178 | DO j = 2,nvm |
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| 179 | |
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| 180 | ! |
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| 181 | ! 3.1 determine if there is climatic senescence |
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| 182 | ! |
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| 183 | |
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| 184 | SELECT CASE ( pheno_crit%senescence_type(j) ) |
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| 185 | |
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| 186 | CASE ( 'cold' ) |
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| 187 | |
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| 188 | ! 3.1.1 summergreen species: |
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| 189 | ! monthly temperature low and temperature tendency negative ? |
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| 190 | |
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| 191 | ! critical temperature for senescence may depend on long term annual mean temperature |
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| 192 | tl(:) = tlong_ref(:) - ZeroCelsius |
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| 193 | t_crit(:) = ZeroCelsius + pheno_crit%senescence_temp(j,1) + & |
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| 194 | tl(:) * pheno_crit%senescence_temp(j,2) + & |
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| 195 | tl(:)*tl(:) * pheno_crit%senescence_temp(j,3) |
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| 196 | |
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| 197 | WHERE ( ( biomass(:,j,ileaf) .GT. 0.0 ) .AND. & |
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| 198 | ( leaf_meanage(:,j) .GT. pheno_crit%min_leaf_age_for_senescence(j) ) .AND. & |
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| 199 | ( t2m_month(:) .LT. t_crit(:) ) .AND. ( t2m_week(:) .LT. t2m_month(:) ) ) |
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| 200 | |
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| 201 | senescence(:,j) = .TRUE. |
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| 202 | |
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| 203 | ENDWHERE |
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| 204 | |
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| 205 | CASE ( 'dry' ) |
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| 206 | |
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| 207 | ! 3.1.2 raingreen species: |
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| 208 | ! does moisture availability drop below critical level? |
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| 209 | |
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| 210 | moiavail_crit(:) = & |
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| 211 | MIN( MAX( minmoiavail_lastyear(:,j) + pheno_crit%hum_frac(j) * & |
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| 212 | ( maxmoiavail_lastyear(:,j) - minmoiavail_lastyear(:,j) ), & |
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| 213 | pheno_crit%senescence_hum(j) ), & |
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| 214 | pheno_crit%nosenescence_hum(j) ) |
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| 215 | |
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| 216 | WHERE ( ( biomass(:,j,ileaf) .GT. 0.0 ) .AND. & |
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| 217 | ( leaf_meanage(:,j) .GT. pheno_crit%min_leaf_age_for_senescence(j) ) .AND. & |
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| 218 | ( moiavail_week(:,j) .LT. moiavail_crit(:) ) ) |
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| 219 | |
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| 220 | senescence(:,j) = .TRUE. |
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| 221 | |
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| 222 | ENDWHERE |
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| 223 | |
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| 224 | CASE ( 'mixed' ) |
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| 225 | |
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| 226 | ! 3.1.3 mixed criterion: |
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| 227 | ! moisture availability drops below critical level, or |
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| 228 | ! monthly temperature low and temperature tendency negative |
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| 229 | moiavail_crit(:) = & |
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| 230 | MIN( MAX( minmoiavail_lastyear(:,j) + pheno_crit%hum_frac(j) * & |
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| 231 | ( maxmoiavail_lastyear(:,j) - minmoiavail_lastyear(:,j) ), & |
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| 232 | pheno_crit%senescence_hum(j) ), & |
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| 233 | pheno_crit%nosenescence_hum(j) ) |
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| 234 | tl(:) = tlong_ref(:) - ZeroCelsius |
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| 235 | t_crit(:) = ZeroCelsius + pheno_crit%senescence_temp(j,1) + & |
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| 236 | tl(:) * pheno_crit%senescence_temp(j,2) + & |
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| 237 | tl(:)*tl(:) * pheno_crit%senescence_temp(j,3) |
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| 238 | IF ( tree(j) ) THEN |
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| 239 | |
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| 240 | ! critical temperature for senescence may depend on long term annual mean temperature |
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| 241 | WHERE ( ( biomass(:,j,ileaf) .GT. 0.0 ) .AND. & |
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| 242 | ( leaf_meanage(:,j) .GT. pheno_crit%min_leaf_age_for_senescence(j) ) .AND. & |
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| 243 | ( ( moiavail_week(:,j) .LT. moiavail_crit(:) ) .OR. & |
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| 244 | ( ( t2m_month(:) .LT. t_crit(:) ) .AND. ( t2m_week(:) .LT. t2m_month(:) ) ) ) ) |
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| 245 | senescence(:,j) = .TRUE. |
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| 246 | ENDWHERE |
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| 247 | ELSE |
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| 248 | new_turnover_time(:,j)=pheno_crit%max_turnover_time(j)+20 |
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| 249 | WHERE ((moiavail_week(:,j) .LT. moiavail_month(:,j))& |
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| 250 | .AND. (moiavail_week(:,j) .LT. pheno_crit%nosenescence_hum(j))) |
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| 251 | new_turnover_time(:,j)=pheno_crit%max_turnover_time(j) * & |
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| 252 | (1.-pheno_crit%nosenescence_hum(j)+moiavail_week(:,j)) * & |
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| 253 | (1.-pheno_crit%nosenescence_hum(j)+moiavail_week(:,j)) + & |
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| 254 | pheno_crit%min_turnover_time(j) |
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| 255 | ! new_turnover_time(:,j)=pheno_crit%max_turnover_time(j) * & |
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| 256 | ! moiavail_week(:,j)/ pheno_crit%nosenescence_hum(j) + & |
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| 257 | ! pheno_crit%min_turnover_time(j) |
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| 258 | ENDWHERE |
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| 259 | ! WHERE ((t2m_month(:) .LT. t_crit(:)+5) .AND. ( t2m_week(:) .LT. t2m_month(:) )) |
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| 260 | ! new_turnover_time(:,j)=new_turnover_time(:,j)*((t2m_month(:)-t_crit(:))/5*0.4+0.6) |
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| 261 | ! ENDWHERE |
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| 262 | ! WHERE (new_turnover_time(:,j) .LT. pheno_crit%min_turnover_time(j)) |
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| 263 | ! new_turnover_time(:,j)=pheno_crit%min_turnover_time(j) |
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| 264 | ! ENDWHERE |
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| 265 | |
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| 266 | WHERE (new_turnover_time(:,j) .GT. turnover_time(:,j)*1.1) |
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| 267 | new_turnover_time(:,j)=pheno_crit%max_turnover_time(j)+20 |
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| 268 | ENDWHERE |
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| 269 | !!$ WHERE ( ( t2m_month(:) .LT. t_crit(:) ) .AND. ( t2m_week(:) .LT. t2m_month(:) ) & |
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| 270 | !!$ & .AND. ( leaf_meanage(:,j) .GT. pheno_crit%min_leaf_age_for_senescence(j) )) |
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| 271 | !!$ new_turnover_time(:,j)=pheno_crit%min_turnover_time(j) |
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| 272 | !!$ ENDWHERE |
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| 273 | ! print *,'t_crit=',t_crit |
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| 274 | |
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| 275 | |
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| 276 | turnover_time(:,j)=(turnover_time(:,j)*10./dt+new_turnover_time(:,j))/(10./dt+1.) |
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| 277 | |
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| 278 | ENDIF |
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| 279 | |
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| 280 | CASE ( 'none' ) |
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| 281 | |
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| 282 | ! evergreen species: no climatic senescence |
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| 283 | |
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| 284 | CASE default |
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| 285 | |
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| 286 | WRITE(numout,*) 'turnover: don''t know how to treat this PFT.' |
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| 287 | WRITE(numout,*) ' number: ',j |
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| 288 | WRITE(numout,*) ' senescence type: ',pheno_crit%senescence_type(j) |
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| 289 | STOP |
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| 290 | |
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| 291 | END SELECT |
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| 292 | |
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| 293 | ! |
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| 294 | ! 3.2 drop leaves and roots, plus stems and fruits for grasses |
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| 295 | ! |
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| 296 | |
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| 297 | IF ( tree(j) ) THEN |
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| 298 | |
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| 299 | ! 3.2.1 trees |
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| 300 | |
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| 301 | WHERE ( senescence(:,j) ) |
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| 302 | |
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| 303 | turnover(:,j,ileaf) = biomass(:,j,ileaf) * dt / pheno_crit%leaffall(j) |
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| 304 | turnover(:,j,iroot) = biomass(:,j,iroot) * dt / pheno_crit%leaffall(j) |
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| 305 | |
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| 306 | biomass(:,j,ileaf) = biomass(:,j,ileaf) - turnover(:,j,ileaf) |
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| 307 | biomass(:,j,iroot) = biomass(:,j,iroot) - turnover(:,j,iroot) |
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| 308 | |
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| 309 | ENDWHERE |
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| 310 | |
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| 311 | ELSE |
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| 312 | |
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| 313 | ! 3.2.2 grasses |
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| 314 | WHERE (turnover_time(:,j) .LT. pheno_crit%max_turnover_time(j)) |
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| 315 | turnover(:,j,ileaf) = biomass(:,j,ileaf) * dt / turnover_time(:,j) |
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| 316 | turnover(:,j,isapabove) = biomass(:,j,isapabove) * dt / turnover_time(:,j) |
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| 317 | turnover(:,j,iroot) = biomass(:,j,iroot) * dt / turnover_time(:,j) |
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| 318 | turnover(:,j,ifruit) = biomass(:,j,ifruit) * dt / turnover_time(:,j) |
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| 319 | ELSEWHERE |
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| 320 | turnover(:,j,ileaf)=0.0 |
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| 321 | turnover(:,j,isapabove) =0.0 |
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| 322 | turnover(:,j,iroot) = 0.0 |
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| 323 | turnover(:,j,ifruit) =0.0 |
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| 324 | ENDWHERE |
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| 325 | biomass(:,j,ileaf) = biomass(:,j,ileaf) - turnover(:,j,ileaf) |
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| 326 | biomass(:,j,isapabove) = biomass(:,j,isapabove) - turnover(:,j,isapabove) |
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| 327 | biomass(:,j,iroot) = biomass(:,j,iroot) - turnover(:,j,iroot) |
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| 328 | biomass(:,j,ifruit) = biomass(:,j,ifruit) - turnover(:,j,ifruit) |
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| 329 | |
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| 330 | ENDIF ! tree/grass |
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| 331 | |
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| 332 | ENDDO ! loop over PFTs |
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| 333 | |
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| 334 | ! |
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| 335 | ! 4 At a certain age, leaves fall off, even if the climate would allow a green plant |
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| 336 | ! all year round. |
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| 337 | ! Decay rate varies with leaf age. |
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| 338 | ! Roots, fruits (and stems) follow leaves. |
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| 339 | ! Note that plant is not declared senescent in this case (important for allocation: |
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| 340 | ! if the plant loses leaves because of their age, it can renew them). |
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| 341 | ! |
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| 342 | |
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| 343 | DO j = 2,nvm |
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| 344 | |
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| 345 | ! save old leaf mass |
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| 346 | lm_old(:) = biomass(:,j,ileaf) |
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| 347 | |
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| 348 | ! initialize leaf mass change in age class |
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| 349 | delta_lm(:,:) = 0.0 |
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| 350 | |
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| 351 | IF ( tree(j) ) THEN |
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| 352 | |
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| 353 | ! |
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| 354 | ! 4.1 trees: leaves, roots, fruits |
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| 355 | ! roots and fruits follow leaves. |
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| 356 | ! |
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| 357 | |
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| 358 | ! 4.1.1 critical age: prescribed for trees |
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| 359 | |
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| 360 | leaf_age_crit(:,j) = pheno_crit%leafagecrit(j) |
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| 361 | |
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| 362 | ! 4.1.2 loop over leaf age classes |
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| 363 | |
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| 364 | DO m = 1, nleafages |
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| 365 | turnover_rate(:) =0 |
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| 366 | WHERE ( leaf_age(:,j,m) .GT. leaf_age_crit(:,j)/2. ) |
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| 367 | |
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| 368 | turnover_rate(:) = & |
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| 369 | MIN( 0.99_r_std, dt / ( leaf_age_crit(:,j) * & |
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| 370 | ( leaf_age_crit(:,j) / leaf_age(:,j,m) )**4._r_std ) ) |
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| 371 | |
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| 372 | dturnover(:) = biomass(:,j,ileaf) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 373 | turnover(:,j,ileaf) = turnover(:,j,ileaf) + dturnover(:) |
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| 374 | biomass(:,j,ileaf) = biomass(:,j,ileaf) - dturnover(:) |
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| 375 | |
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| 376 | ! save leaf mass change |
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| 377 | delta_lm(:,m) = - dturnover(:) |
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| 378 | |
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| 379 | dturnover(:) = biomass(:,j,iroot) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 380 | turnover(:,j,iroot) = turnover(:,j,iroot) + dturnover(:) |
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| 381 | biomass(:,j,iroot) = biomass(:,j,iroot) - dturnover(:) |
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| 382 | |
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| 383 | dturnover(:) = biomass(:,j,ifruit) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 384 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + dturnover(:) |
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| 385 | biomass(:,j,ifruit) = biomass(:,j,ifruit) - dturnover(:) |
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| 386 | |
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| 387 | ENDWHERE |
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| 388 | |
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| 389 | ENDDO |
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| 390 | |
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| 391 | ELSE |
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| 392 | |
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| 393 | ! |
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| 394 | ! 4.2 grasses: leaves, roots, fruits, sap. |
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| 395 | ! roots, fruits, and sap follow leaves. |
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| 396 | ! |
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| 397 | |
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| 398 | ! 4.2.1 critical leaf age depends on long-term temperature: |
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| 399 | ! generally, lower turnover in cooler climates. |
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| 400 | |
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| 401 | leaf_age_crit(:,j) = & |
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| 402 | MIN( pheno_crit%leafagecrit(j) * 1.5_r_std , & |
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| 403 | MAX( pheno_crit%leafagecrit(j) * 0.75_r_std, & |
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| 404 | pheno_crit%leafagecrit(j) - 10._r_std * & |
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| 405 | ( tlong_ref(:)-ZeroCelsius-20._r_std ) ) ) |
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| 406 | |
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| 407 | ! 4.2.2 loop over leaf age classes |
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| 408 | |
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| 409 | DO m = 1, nleafages |
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| 410 | |
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| 411 | WHERE ( leaf_age(:,j,m) .GT. leaf_age_crit(:,j)/2. ) |
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| 412 | |
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| 413 | turnover_rate(:) = & |
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| 414 | MIN( 0.99_r_std, dt / ( leaf_age_crit(:,j) * & |
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| 415 | ( leaf_age_crit(:,j) / leaf_age(:,j,m) )**4._r_std ) ) |
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| 416 | |
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| 417 | dturnover(:) = biomass(:,j,ileaf) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 418 | turnover(:,j,ileaf) = turnover(:,j,ileaf) + dturnover(:) |
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| 419 | biomass(:,j,ileaf) = biomass(:,j,ileaf) - dturnover(:) |
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| 420 | |
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| 421 | ! save leaf mass change |
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| 422 | delta_lm(:,m) = - dturnover(:) |
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| 423 | |
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| 424 | dturnover(:) = biomass(:,j,isapabove) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 425 | turnover(:,j,isapabove) = turnover(:,j,isapabove) + dturnover(:) |
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| 426 | biomass(:,j,isapabove) = biomass(:,j,isapabove) - dturnover(:) |
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| 427 | |
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| 428 | dturnover(:) = biomass(:,j,iroot) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 429 | turnover(:,j,iroot) = turnover(:,j,iroot) + dturnover(:) |
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| 430 | biomass(:,j,iroot) = biomass(:,j,iroot) - dturnover(:) |
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| 431 | |
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| 432 | dturnover(:) = biomass(:,j,ifruit) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 433 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + dturnover(:) |
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| 434 | biomass(:,j,ifruit) = biomass(:,j,ifruit) - dturnover(:) |
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| 435 | |
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| 436 | ENDWHERE |
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| 437 | |
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| 438 | |
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| 439 | ENDDO |
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| 440 | |
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| 441 | ENDIF ! tree/grass ? |
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| 442 | |
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| 443 | ! |
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| 444 | ! 4.3 recalculate fraction in each leaf age class |
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| 445 | ! new fraction = new leaf mass of that fraction / new total leaf mass |
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| 446 | ! = ( old fraction*old total leaf mass + biomass change of that fraction ) / |
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| 447 | ! new total leaf mass |
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| 448 | ! |
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| 449 | |
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| 450 | DO m = 1, nleafages |
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| 451 | |
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| 452 | WHERE ( biomass(:,j,ileaf) .GT. 0.0 ) |
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| 453 | leaf_frac(:,j,m) = ( leaf_frac(:,j,m)*lm_old(:) + delta_lm(:,m) ) / biomass(:,j,ileaf) |
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| 454 | ELSEWHERE |
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| 455 | leaf_frac(:,j,m) = 0.0 |
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| 456 | ENDWHERE |
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| 457 | |
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| 458 | ENDDO |
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| 459 | |
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| 460 | ENDDO ! loop over PFTs |
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| 461 | |
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| 462 | ! |
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| 463 | ! 5 new (provisional) lai |
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| 464 | ! |
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| 465 | |
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| 466 | ! lai(:,ibare_sechiba) = zero |
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| 467 | ! DO j = 2, nvm |
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| 468 | ! lai(:,j) = biomass(:,j,ileaf) * sla(j) |
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| 469 | ! ENDDO |
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| 470 | |
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| 471 | ! |
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| 472 | ! 6 definitely drop leaves if very low leaf mass during senescence. |
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| 473 | ! Also drop fruits and loose fine roots. |
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| 474 | ! Set lai to zero if necessary |
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| 475 | ! Check whether leaf regrowth is immediately allowed. |
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| 476 | ! |
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| 477 | |
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| 478 | DO j = 2,nvm |
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| 479 | |
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| 480 | shed_rest(:) = .FALSE. |
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| 481 | |
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| 482 | ! |
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| 483 | ! 6.1 deciduous trees |
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| 484 | ! |
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| 485 | |
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| 486 | IF ( tree(j) .AND. ( pheno_crit%senescence_type(j) .NE. 'none' ) ) THEN |
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| 487 | |
---|
| 488 | ! check whether we shed the remaining leaves |
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| 489 | |
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| 490 | WHERE ( ( biomass(:,j,ileaf) .GT. 0.0 ) .AND. senescence(:,j) .AND. & |
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| 491 | ( biomass(:,j,ileaf) .LT. (pheno_crit%lai_initmin(j) / 2.)/sla(j) ) ) |
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| 492 | |
---|
| 493 | shed_rest(:) = .TRUE. |
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| 494 | |
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| 495 | turnover(:,j,ileaf) = turnover(:,j,ileaf) + biomass(:,j,ileaf) |
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| 496 | turnover(:,j,iroot) = turnover(:,j,iroot) + biomass(:,j,iroot) |
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| 497 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + biomass(:,j,ifruit) |
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| 498 | |
---|
| 499 | biomass(:,j,ileaf) = 0.0 |
---|
| 500 | biomass(:,j,iroot) = 0.0 |
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| 501 | biomass(:,j,ifruit) = 0.0 |
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| 502 | |
---|
| 503 | |
---|
| 504 | |
---|
| 505 | ! reset leaf age |
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| 506 | leaf_meanage(:,j) = 0.0 |
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| 507 | |
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| 508 | ENDWHERE |
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| 509 | |
---|
| 510 | ENDIF |
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| 511 | |
---|
| 512 | ! |
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| 513 | ! 6.2 grasses: also convert stems |
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| 514 | ! |
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| 515 | |
---|
| 516 | IF ( .NOT. tree(j) ) THEN |
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| 517 | |
---|
| 518 | ! Shed the remaining leaves if LAI very low. |
---|
| 519 | |
---|
| 520 | WHERE ( ( biomass(:,j,ileaf) .GT. 0.0 ) .AND. senescence(:,j) .AND. & |
---|
| 521 | ( biomass(:,j,ileaf) .LT. (pheno_crit%lai_initmin(j) / 2.)/sla(j) )) |
---|
| 522 | |
---|
| 523 | shed_rest(:) = .TRUE. |
---|
| 524 | |
---|
| 525 | turnover(:,j,ileaf) = turnover(:,j,ileaf) + biomass(:,j,ileaf) |
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| 526 | turnover(:,j,isapabove) = turnover(:,j,isapabove) + biomass(:,j,isapabove) |
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| 527 | turnover(:,j,iroot) = turnover(:,j,iroot) + biomass(:,j,iroot) |
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| 528 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + biomass(:,j,ifruit) |
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| 529 | |
---|
| 530 | biomass(:,j,ileaf) = 0.0 |
---|
| 531 | biomass(:,j,isapabove) = 0.0 |
---|
| 532 | biomass(:,j,iroot) = 0.0 |
---|
| 533 | biomass(:,j,ifruit) = 0.0 |
---|
| 534 | |
---|
| 535 | |
---|
| 536 | |
---|
| 537 | ! reset leaf age |
---|
| 538 | leaf_meanage(:,j) = 0.0 |
---|
| 539 | |
---|
| 540 | ENDWHERE |
---|
| 541 | |
---|
| 542 | ENDIF |
---|
| 543 | |
---|
| 544 | ! |
---|
| 545 | ! 6.3 reset leaf age structure |
---|
| 546 | ! |
---|
| 547 | |
---|
| 548 | DO m = 1, nleafages |
---|
| 549 | |
---|
| 550 | WHERE ( shed_rest(:) ) |
---|
| 551 | |
---|
| 552 | leaf_age(:,j,m) = 0.0 |
---|
| 553 | leaf_frac(:,j,m) = 0.0 |
---|
| 554 | |
---|
| 555 | ENDWHERE |
---|
| 556 | |
---|
| 557 | ENDDO |
---|
| 558 | |
---|
| 559 | ENDDO |
---|
| 560 | |
---|
| 561 | ! |
---|
| 562 | ! 7 Elephants, cows, gazelles. No lions. |
---|
| 563 | ! Does not modify leaf age structure. |
---|
| 564 | ! |
---|
| 565 | |
---|
| 566 | IF ( ok_herbivores ) THEN |
---|
| 567 | |
---|
| 568 | ! herbivore activity allowed. Eat when there are leaves. Otherwise, |
---|
| 569 | ! there won't be many fruits anyway. |
---|
| 570 | |
---|
| 571 | DO j = 2,nvm |
---|
| 572 | |
---|
| 573 | IF ( tree(j) ) THEN |
---|
| 574 | |
---|
| 575 | ! trees: only leaves and fruits are affected |
---|
| 576 | |
---|
| 577 | WHERE ( biomass(:,j,ileaf) .GT. zero ) |
---|
| 578 | ! added by shilong |
---|
| 579 | WHERE (herbivores(:,j).GT. zero) |
---|
| 580 | dturnover(:) = biomass(:,j,ileaf) * dt / herbivores(:,j) |
---|
| 581 | turnover(:,j,ileaf) = turnover(:,j,ileaf) + dturnover(:) |
---|
| 582 | biomass(:,j,ileaf) = biomass(:,j,ileaf) - dturnover(:) |
---|
| 583 | |
---|
| 584 | dturnover(:) = biomass(:,j,ifruit) * dt / herbivores(:,j) |
---|
| 585 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + dturnover(:) |
---|
| 586 | biomass(:,j,ifruit) = biomass(:,j,ifruit) - dturnover(:) |
---|
| 587 | ENDWHERE |
---|
| 588 | ENDWHERE |
---|
| 589 | |
---|
| 590 | ELSE |
---|
| 591 | |
---|
| 592 | ! grasses: the whole biomass above the ground: leaves, fruits, stems |
---|
| 593 | |
---|
| 594 | WHERE ( biomass(:,j,ileaf) .GT. zero ) |
---|
| 595 | ! added by shilong |
---|
| 596 | WHERE (herbivores(:,j) .GT. zero) |
---|
| 597 | dturnover(:) = biomass(:,j,ileaf) * dt / herbivores(:,j) |
---|
| 598 | turnover(:,j,ileaf) = turnover(:,j,ileaf) + dturnover(:) |
---|
| 599 | biomass(:,j,ileaf) = biomass(:,j,ileaf) - dturnover(:) |
---|
| 600 | |
---|
| 601 | dturnover(:) = biomass(:,j,isapabove) * dt / herbivores(:,j) |
---|
| 602 | turnover(:,j,isapabove) = turnover(:,j,isapabove) + dturnover(:) |
---|
| 603 | biomass(:,j,isapabove) = biomass(:,j,isapabove) - dturnover(:) |
---|
| 604 | |
---|
| 605 | dturnover(:) = biomass(:,j,ifruit) * dt / herbivores(:,j) |
---|
| 606 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + dturnover(:) |
---|
| 607 | biomass(:,j,ifruit) = biomass(:,j,ifruit) - dturnover(:) |
---|
| 608 | ENDWHERE |
---|
| 609 | |
---|
| 610 | ENDWHERE |
---|
| 611 | |
---|
| 612 | ENDIF ! tree/grass? |
---|
| 613 | |
---|
| 614 | ENDDO ! loop over PFTs |
---|
| 615 | |
---|
| 616 | ENDIF |
---|
| 617 | |
---|
| 618 | ! |
---|
| 619 | ! 8 fruit turnover for trees |
---|
| 620 | ! |
---|
| 621 | |
---|
| 622 | DO j = 2,nvm |
---|
| 623 | |
---|
| 624 | IF ( tree(j) ) THEN |
---|
| 625 | |
---|
| 626 | !SZ correction of a mass destroying bug |
---|
| 627 | dturnover(:) = biomass(:,j,ifruit) * dt / tau_fruit(j) |
---|
| 628 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + dturnover(:) |
---|
| 629 | biomass(:,j,ifruit) = biomass(:,j,ifruit) - dturnover(:) |
---|
| 630 | !!$ turnover(:,j,ifruit) = biomass(:,j,ifruit) * dt / tau_fruit(j) |
---|
| 631 | !!$ biomass(:,j,ifruit) = biomass(:,j,ifruit) - turnover(:,j,ifruit) |
---|
| 632 | |
---|
| 633 | ENDIF |
---|
| 634 | |
---|
| 635 | ENDDO |
---|
| 636 | |
---|
| 637 | ! |
---|
| 638 | ! 9 Conversion of sapwood to heartwood |
---|
| 639 | ! This is not added to "turnover" as the biomass is not lost! |
---|
| 640 | ! |
---|
| 641 | |
---|
| 642 | DO j = 2,nvm |
---|
| 643 | |
---|
| 644 | IF ( tree(j) ) THEN |
---|
| 645 | |
---|
| 646 | ! for age calculations |
---|
| 647 | |
---|
| 648 | IF ( .NOT. control%ok_dgvm ) THEN |
---|
| 649 | hw_old(:) = biomass(:,j,iheartabove) + biomass(:,j,iheartbelow) |
---|
| 650 | ENDIF |
---|
| 651 | |
---|
| 652 | ! |
---|
| 653 | ! 9.1 Calculate the rate of conversion and update masses |
---|
| 654 | ! |
---|
| 655 | |
---|
| 656 | ! above the ground |
---|
| 657 | |
---|
| 658 | sapconv(:) = biomass(:,j,isapabove) * dt / tau_sap(j) |
---|
| 659 | biomass(:,j,isapabove) = biomass(:,j,isapabove) - sapconv(:) |
---|
| 660 | biomass(:,j,iheartabove) = biomass(:,j,iheartabove) + sapconv(:) |
---|
| 661 | |
---|
| 662 | ! below the ground |
---|
| 663 | |
---|
| 664 | sapconv(:) = biomass(:,j,isapbelow) * dt / tau_sap(j) |
---|
| 665 | biomass(:,j,isapbelow) = biomass(:,j,isapbelow) - sapconv(:) |
---|
| 666 | biomass(:,j,iheartbelow) = biomass(:,j,iheartbelow) + sapconv(:) |
---|
| 667 | |
---|
| 668 | |
---|
| 669 | ! |
---|
| 670 | ! 9.2 If vegetation is not dynamic, identify the age of the heartwood |
---|
| 671 | ! to the age of the whole tree (otherwise, the age of the tree is |
---|
| 672 | ! treated in the establishment routine). |
---|
| 673 | ! Creation of new heartwood decreases the age of the plant. |
---|
| 674 | ! |
---|
| 675 | |
---|
| 676 | IF ( .NOT. control%ok_dgvm ) THEN |
---|
| 677 | |
---|
| 678 | hw_new(:) = biomass(:,j,iheartabove) + biomass(:,j,iheartbelow) |
---|
| 679 | |
---|
| 680 | WHERE ( hw_new(:) .GT. 0.0 ) |
---|
| 681 | |
---|
| 682 | age(:,j) = age(:,j) * hw_old(:)/hw_new(:) |
---|
| 683 | |
---|
| 684 | ENDWHERE |
---|
| 685 | |
---|
| 686 | ENDIF |
---|
| 687 | |
---|
| 688 | ENDIF |
---|
| 689 | |
---|
| 690 | ENDDO |
---|
| 691 | |
---|
| 692 | ! |
---|
| 693 | ! history |
---|
| 694 | ! |
---|
| 695 | |
---|
| 696 | CALL histwrite (hist_id_stomate, 'LEAF_AGE', itime, & |
---|
| 697 | leaf_meanage, npts*nvm, horipft_index) |
---|
| 698 | CALL histwrite (hist_id_stomate, 'HERBIVORES', itime, & |
---|
| 699 | herbivores, npts*nvm, horipft_index) |
---|
| 700 | |
---|
| 701 | IF (bavard.GE.4) WRITE(numout,*) 'Leaving turnover' |
---|
| 702 | |
---|
| 703 | END SUBROUTINE turn |
---|
| 704 | |
---|
| 705 | END MODULE stomate_turnover |
---|