[64] | 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_data |
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| 17 | USE constantes |
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| 18 | USE pft_parameters |
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| 19 | |
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| 20 | IMPLICIT NONE |
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| 21 | |
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| 22 | ! private & public routines |
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| 23 | |
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| 24 | PRIVATE |
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| 25 | PUBLIC turn, turn_clear |
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| 26 | |
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| 27 | ! first call |
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| 28 | LOGICAL, SAVE :: firstcall = .TRUE. |
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| 29 | |
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| 30 | CONTAINS |
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| 31 | |
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| 32 | SUBROUTINE turn_clear |
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| 33 | firstcall=.TRUE. |
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| 34 | END SUBROUTINE turn_clear |
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| 35 | |
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| 36 | SUBROUTINE turn (npts, dt, PFTpresent, & |
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| 37 | herbivores, & |
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| 38 | maxmoiavail_lastyear, minmoiavail_lastyear, & |
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| 39 | moiavail_week, moiavail_month, tlong_ref, t2m_month, t2m_week, veget_max, & |
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| 40 | leaf_age, leaf_frac, age, lai, biomass, & |
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| 41 | turnover, senescence,turnover_time) |
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| 42 | |
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| 43 | ! |
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| 44 | ! 0 declarations |
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| 45 | ! |
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| 46 | |
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| 47 | ! 0.1 input |
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| 48 | |
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| 49 | ! Domain size |
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| 50 | INTEGER(i_std), INTENT(in) :: npts |
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| 51 | ! time step in days |
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| 52 | REAL(r_std), INTENT(in) :: dt |
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| 53 | ! PFT exists |
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| 54 | LOGICAL, DIMENSION(npts,nvm), INTENT(in) :: PFTpresent |
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| 55 | ! time constant of probability of a leaf to be eaten by a herbivore (days) |
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| 56 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: herbivores |
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| 57 | ! last year's maximum moisture availability |
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| 58 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: maxmoiavail_lastyear |
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| 59 | ! last year's minimum moisture availability |
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| 60 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: minmoiavail_lastyear |
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| 61 | ! "weekly" moisture availability |
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| 62 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: moiavail_week |
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| 63 | ! "monthly" moisture availability |
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| 64 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: moiavail_month |
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| 65 | ! "long term" 2 meter reference temperatures (K) |
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| 66 | REAL(r_std), DIMENSION(npts), INTENT(in) :: tlong_ref |
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| 67 | ! "monthly" 2-meter temperatures (K) |
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| 68 | REAL(r_std), DIMENSION(npts), INTENT(in) :: t2m_month |
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| 69 | ! "weekly" 2 meter temperatures (K) |
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| 70 | REAL(r_std), DIMENSION(npts), INTENT(in) :: t2m_week |
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| 71 | ! "maximal" coverage fraction of a PFT (LAI -> infinity) on ground |
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| 72 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: veget_max |
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| 73 | |
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| 74 | ! 0.2 modified fields |
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| 75 | |
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| 76 | ! age of the leaves (days) |
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| 77 | REAL(r_std), DIMENSION(npts,nvm,nleafages), INTENT(inout) :: leaf_age |
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| 78 | ! fraction of leaves in leaf age class |
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| 79 | REAL(r_std), DIMENSION(npts,nvm,nleafages), INTENT(inout) :: leaf_frac |
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| 80 | ! age (years) |
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| 81 | REAL(r_std), DIMENSION(npts,nvm), INTENT(inout) :: age |
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| 82 | ! leaf area index |
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| 83 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: lai |
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| 84 | ! biomass (gC/(m**2 of ground)) |
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| 85 | REAL(r_std), DIMENSION(npts,nvm,nparts), INTENT(inout) :: biomass |
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| 86 | ! turnover_time of grasse |
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| 87 | REAL(r_std), DIMENSION(npts,nvm), INTENT(inout) :: turnover_time |
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| 88 | |
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| 89 | ! 0.3 output |
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| 90 | |
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| 91 | ! Turnover rates (gC/day/(m**2 of ground)) |
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| 92 | REAL(r_std), DIMENSION(npts,nvm,nparts), INTENT(out) :: turnover |
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| 93 | ! is the plant senescent? |
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| 94 | ! (interesting only for deciduous trees: carbohydrate reserve) |
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| 95 | LOGICAL, DIMENSION(npts,nvm), INTENT(out) :: senescence |
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| 96 | |
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| 97 | ! 0.4 local |
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| 98 | |
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| 99 | !!$ ! minimum leaf age for senescence (d) |
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| 100 | !!$ REAL(r_std), PARAMETER :: min_leaf_age = 30. |
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| 101 | ! mean age of the leaves (days) |
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| 102 | REAL(r_std), DIMENSION(npts,nvm) :: leaf_meanage |
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| 103 | ! Intermediate variable for turnover |
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| 104 | REAL(r_std), DIMENSION(npts) :: dturnover |
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| 105 | ! critical moisture availability, function of last year's moisture availability |
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| 106 | REAL(r_std), DIMENSION(npts) :: moiavail_crit |
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| 107 | ! long term annual mean temperature, C |
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| 108 | REAL(r_std), DIMENSION(npts) :: tl |
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| 109 | ! critical senescence temperature, function of long term annual temperature (K) |
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| 110 | REAL(r_std), DIMENSION(npts) :: t_crit |
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| 111 | ! shed the remaining leaves? |
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| 112 | LOGICAL, DIMENSION(npts) :: shed_rest |
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| 113 | ! Sapwood conversion (gC/day(m**2 of ground)) |
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| 114 | REAL(r_std), DIMENSION(npts) :: sapconv |
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| 115 | ! old heartwood mass (gC/(m**2 of ground)) |
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| 116 | REAL(r_std), DIMENSION(npts) :: hw_old |
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| 117 | ! new heartwood mass (gC/(m**2 of ground)) |
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| 118 | REAL(r_std), DIMENSION(npts) :: hw_new |
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| 119 | ! old leaf mass (gC/(m**2 of ground)) |
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| 120 | REAL(r_std), DIMENSION(npts) :: lm_old |
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| 121 | ! leaf mass change for each age class |
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| 122 | REAL(r_std), DIMENSION(npts,nleafages) :: delta_lm |
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| 123 | ! turnover rate |
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| 124 | REAL(r_std), DIMENSION(npts) :: turnover_rate |
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| 125 | ! critical leaf age (d) |
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| 126 | REAL(r_std), DIMENSION(npts,nvm) :: leaf_age_crit |
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| 127 | ! instantaneous turnover time |
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| 128 | REAL(r_std), DIMENSION(npts,nvm) :: new_turnover_time |
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| 129 | ! Index |
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| 130 | INTEGER(i_std) :: j,m |
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| 131 | |
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| 132 | ! ========================================================================= |
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| 133 | |
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| 134 | IF (bavard.GE.3) WRITE(numout,*) 'Entering turnover' |
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| 135 | |
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| 136 | ! |
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| 137 | ! 1 messages |
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| 138 | ! |
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| 139 | |
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| 140 | IF ( firstcall ) THEN |
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| 141 | |
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| 142 | WRITE(numout,*) 'turnover:' |
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| 143 | |
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| 144 | WRITE(numout,*) ' > minimum mean leaf age for senescence (d): ',min_leaf_age_for_senescence |
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| 145 | |
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| 146 | firstcall = .FALSE. |
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| 147 | |
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| 148 | |
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| 149 | ENDIF |
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| 150 | |
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| 151 | ! |
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| 152 | ! 2 Initializations |
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| 153 | ! |
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| 154 | |
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| 155 | ! |
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| 156 | ! 2.1 set output to zero |
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| 157 | ! |
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| 158 | |
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| 159 | turnover(:,:,:) = zero |
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| 160 | new_turnover_time=zero |
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| 161 | senescence(:,:) = .FALSE. |
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| 162 | |
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| 163 | ! |
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| 164 | ! 2.2 mean leaf age. Should actually be recalculated at the end of this routine, |
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| 165 | ! but it does not change too fast. |
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| 166 | ! |
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| 167 | |
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| 168 | leaf_meanage(:,:) = 0.0 |
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| 169 | |
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| 170 | DO m = 1, nleafages |
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| 171 | leaf_meanage(:,:) = leaf_meanage(:,:) + leaf_age(:,:,m) * leaf_frac(:,:,m) |
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| 172 | ENDDO |
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| 173 | |
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| 174 | ! |
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| 175 | ! 3 different types of "climatic" leaf senescence |
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| 176 | ! does not change age structure. |
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| 177 | ! |
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| 178 | |
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| 179 | DO j = 2,nvm |
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| 180 | |
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| 181 | ! |
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| 182 | ! 3.1 determine if there is climatic senescence |
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| 183 | ! |
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| 184 | |
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| 185 | SELECT CASE ( senescence_type(j) ) |
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| 186 | |
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| 187 | CASE ( 'cold' ) |
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| 188 | |
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| 189 | ! 3.1.1 summergreen species: |
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| 190 | ! monthly temperature low and temperature tendency negative ? |
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| 191 | |
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| 192 | ! critical temperature for senescence may depend on long term annual mean temperature |
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| 193 | tl(:) = tlong_ref(:) - ZeroCelsius |
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| 194 | t_crit(:) = ZeroCelsius + senescence_temp(j,1) + & |
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| 195 | tl(:) * senescence_temp(j,2) + & |
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| 196 | tl(:)*tl(:) * senescence_temp(j,3) |
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| 197 | |
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[257] | 198 | WHERE ( ( biomass(:,j,ileaf) .GT. zero ) .AND. & |
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[64] | 199 | ( leaf_meanage(:,j) .GT. min_leaf_age_for_senescence(j) ) .AND. & |
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| 200 | ( t2m_month(:) .LT. t_crit(:) ) .AND. ( t2m_week(:) .LT. t2m_month(:) ) ) |
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| 201 | |
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| 202 | senescence(:,j) = .TRUE. |
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| 203 | |
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| 204 | ENDWHERE |
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| 205 | |
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| 206 | CASE ( 'dry' ) |
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| 207 | |
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| 208 | ! 3.1.2 raingreen species: |
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| 209 | ! does moisture availability drop below critical level? |
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| 210 | |
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| 211 | moiavail_crit(:) = & |
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| 212 | MIN( MAX( minmoiavail_lastyear(:,j) + hum_frac(j) * & |
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| 213 | ( maxmoiavail_lastyear(:,j) - minmoiavail_lastyear(:,j) ), & |
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| 214 | senescence_hum(j) ), & |
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| 215 | nosenescence_hum(j) ) |
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| 216 | |
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[257] | 217 | WHERE ( ( biomass(:,j,ileaf) .GT. zero ) .AND. & |
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[64] | 218 | ( leaf_meanage(:,j) .GT. min_leaf_age_for_senescence(j) ) .AND. & |
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| 219 | ( moiavail_week(:,j) .LT. moiavail_crit(:) ) ) |
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| 220 | |
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| 221 | senescence(:,j) = .TRUE. |
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| 222 | |
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| 223 | ENDWHERE |
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| 224 | |
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| 225 | CASE ( 'mixed' ) |
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| 226 | |
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| 227 | ! 3.1.3 mixed criterion: |
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| 228 | ! moisture availability drops below critical level, or |
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| 229 | ! monthly temperature low and temperature tendency negative |
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| 230 | moiavail_crit(:) = & |
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| 231 | MIN( MAX( minmoiavail_lastyear(:,j) + hum_frac(j) * & |
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| 232 | ( maxmoiavail_lastyear(:,j) - minmoiavail_lastyear(:,j) ), & |
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| 233 | senescence_hum(j) ), & |
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| 234 | nosenescence_hum(j) ) |
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| 235 | tl(:) = tlong_ref(:) - ZeroCelsius |
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| 236 | t_crit(:) = ZeroCelsius + senescence_temp(j,1) + & |
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| 237 | tl(:) * senescence_temp(j,2) + & |
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| 238 | tl(:)*tl(:) * senescence_temp(j,3) |
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| 239 | IF ( tree(j) ) THEN |
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| 240 | |
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| 241 | ! critical temperature for senescence may depend on long term annual mean temperature |
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[257] | 242 | WHERE ( ( biomass(:,j,ileaf) .GT. zero ) .AND. & |
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[64] | 243 | ( leaf_meanage(:,j) .GT. min_leaf_age_for_senescence(j) ) .AND. & |
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| 244 | ( ( moiavail_week(:,j) .LT. moiavail_crit(:) ) .OR. & |
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| 245 | ( ( t2m_month(:) .LT. t_crit(:) ) .AND. ( t2m_week(:) .LT. t2m_month(:) ) ) ) ) |
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| 246 | senescence(:,j) = .TRUE. |
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| 247 | ENDWHERE |
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| 248 | ELSE |
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| 249 | new_turnover_time(:,j)=max_turnover_time(j)+ new_turnover_time_ref |
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| 250 | WHERE ((moiavail_week(:,j) .LT. moiavail_month(:,j))& |
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| 251 | .AND. (moiavail_week(:,j) .LT. nosenescence_hum(j))) |
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| 252 | new_turnover_time(:,j)=max_turnover_time(j) * & |
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| 253 | (1.-nosenescence_hum(j)+moiavail_week(:,j)) * & |
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| 254 | (1.-nosenescence_hum(j)+moiavail_week(:,j)) + & |
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| 255 | min_turnover_time(j) |
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| 256 | ! new_turnover_time(:,j)=pheno_crit%max_turnover_time(j) * & |
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| 257 | ! moiavail_week(:,j)/ pheno_crit%nosenescence_hum(j) + & |
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| 258 | ! pheno_crit%min_turnover_time(j) |
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| 259 | ENDWHERE |
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| 260 | ! WHERE ((t2m_month(:) .LT. t_crit(:)+5) .AND. ( t2m_week(:) .LT. t2m_month(:) )) |
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| 261 | ! new_turnover_time(:,j)=new_turnover_time(:,j)*((t2m_month(:)-t_crit(:))/5*0.4+0.6) |
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| 262 | ! ENDWHERE |
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| 263 | ! WHERE (new_turnover_time(:,j) .LT. pheno_crit%min_turnover_time(j)) |
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| 264 | ! new_turnover_time(:,j)=pheno_crit%min_turnover_time(j) |
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| 265 | ! ENDWHERE |
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| 266 | |
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| 267 | WHERE (new_turnover_time(:,j) .GT. turnover_time(:,j)*1.1) |
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| 268 | new_turnover_time(:,j)=max_turnover_time(j)+ new_turnover_time_ref |
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| 269 | ENDWHERE |
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| 270 | !!$ WHERE ( ( t2m_month(:) .LT. t_crit(:) ) .AND. ( t2m_week(:) .LT. t2m_month(:) ) & |
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| 271 | !!$ & .AND. ( leaf_meanage(:,j) .GT. pheno_crit%min_leaf_age_for_senescence(j) )) |
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| 272 | !!$ new_turnover_time(:,j)=pheno_crit%min_turnover_time(j) |
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| 273 | !!$ ENDWHERE |
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| 274 | ! print *,'t_crit=',t_crit |
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| 275 | |
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| 276 | |
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| 277 | turnover_time(:,j)=(turnover_time(:,j)*dt_turnover_time/dt+new_turnover_time(:,j))/(dt_turnover_time/dt+1.) |
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| 278 | |
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| 279 | ENDIF |
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| 280 | |
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| 281 | CASE ( 'none' ) |
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| 282 | |
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| 283 | ! evergreen species: no climatic senescence |
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| 284 | |
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| 285 | CASE default |
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| 286 | |
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| 287 | WRITE(numout,*) 'turnover: don''t know how to treat this PFT.' |
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| 288 | WRITE(numout,*) ' number: ',j |
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| 289 | WRITE(numout,*) ' senescence type: ',senescence_type(j) |
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| 290 | STOP |
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| 291 | |
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| 292 | END SELECT |
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| 293 | |
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| 294 | ! |
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| 295 | ! 3.2 drop leaves and roots, plus stems and fruits for grasses |
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| 296 | ! |
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| 297 | |
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| 298 | IF ( tree(j) ) THEN |
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| 299 | |
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| 300 | ! 3.2.1 trees |
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| 301 | |
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| 302 | WHERE ( senescence(:,j) ) |
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| 303 | |
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| 304 | turnover(:,j,ileaf) = biomass(:,j,ileaf) * dt / leaffall(j) |
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| 305 | turnover(:,j,iroot) = biomass(:,j,iroot) * dt / leaffall(j) |
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| 306 | |
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| 307 | biomass(:,j,ileaf) = biomass(:,j,ileaf) - turnover(:,j,ileaf) |
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| 308 | biomass(:,j,iroot) = biomass(:,j,iroot) - turnover(:,j,iroot) |
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| 309 | |
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| 310 | ENDWHERE |
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| 311 | |
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| 312 | ELSE |
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| 313 | |
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| 314 | ! 3.2.2 grasses |
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| 315 | WHERE (turnover_time(:,j) .LT. max_turnover_time(j)) |
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| 316 | turnover(:,j,ileaf) = biomass(:,j,ileaf) * dt / turnover_time(:,j) |
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| 317 | turnover(:,j,isapabove) = biomass(:,j,isapabove) * dt / turnover_time(:,j) |
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| 318 | turnover(:,j,iroot) = biomass(:,j,iroot) * dt / turnover_time(:,j) |
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| 319 | turnover(:,j,ifruit) = biomass(:,j,ifruit) * dt / turnover_time(:,j) |
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| 320 | ELSEWHERE |
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[257] | 321 | turnover(:,j,ileaf)= zero |
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| 322 | turnover(:,j,isapabove) = zero |
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| 323 | turnover(:,j,iroot) = zero |
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| 324 | turnover(:,j,ifruit) = zero |
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[64] | 325 | ENDWHERE |
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| 326 | biomass(:,j,ileaf) = biomass(:,j,ileaf) - turnover(:,j,ileaf) |
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| 327 | biomass(:,j,isapabove) = biomass(:,j,isapabove) - turnover(:,j,isapabove) |
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| 328 | biomass(:,j,iroot) = biomass(:,j,iroot) - turnover(:,j,iroot) |
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| 329 | biomass(:,j,ifruit) = biomass(:,j,ifruit) - turnover(:,j,ifruit) |
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| 330 | |
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| 331 | ENDIF ! tree/grass |
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| 332 | |
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| 333 | ENDDO ! loop over PFTs |
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| 334 | |
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| 335 | ! |
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| 336 | ! 4 At a certain age, leaves fall off, even if the climate would allow a green plant |
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| 337 | ! all year round. |
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| 338 | ! Decay rate varies with leaf age. |
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| 339 | ! Roots, fruits (and stems) follow leaves. |
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| 340 | ! Note that plant is not declared senescent in this case (important for allocation: |
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| 341 | ! if the plant loses leaves because of their age, it can renew them). |
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| 342 | ! |
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| 343 | |
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| 344 | DO j = 2,nvm |
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| 345 | |
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| 346 | ! save old leaf mass |
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| 347 | lm_old(:) = biomass(:,j,ileaf) |
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| 348 | |
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| 349 | ! initialize leaf mass change in age class |
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| 350 | delta_lm(:,:) = 0.0 |
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| 351 | |
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| 352 | IF ( tree(j) ) THEN |
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| 353 | |
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| 354 | ! |
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| 355 | ! 4.1 trees: leaves, roots, fruits |
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| 356 | ! roots and fruits follow leaves. |
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| 357 | ! |
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| 358 | |
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| 359 | ! 4.1.1 critical age: prescribed for trees |
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| 360 | |
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| 361 | leaf_age_crit(:,j) = leafagecrit(j) |
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| 362 | |
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| 363 | ! 4.1.2 loop over leaf age classes |
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| 364 | |
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| 365 | DO m = 1, nleafages |
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[257] | 366 | turnover_rate(:) = zero |
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[64] | 367 | WHERE ( leaf_age(:,j,m) .GT. leaf_age_crit(:,j)/2. ) |
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| 368 | |
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| 369 | turnover_rate(:) = & |
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| 370 | MIN( 0.99_r_std, dt / ( leaf_age_crit(:,j) * & |
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| 371 | ( leaf_age_crit(:,j) / leaf_age(:,j,m) )**quatre ) ) |
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| 372 | |
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| 373 | dturnover(:) = biomass(:,j,ileaf) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 374 | turnover(:,j,ileaf) = turnover(:,j,ileaf) + dturnover(:) |
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| 375 | biomass(:,j,ileaf) = biomass(:,j,ileaf) - dturnover(:) |
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| 376 | |
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| 377 | ! save leaf mass change |
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| 378 | delta_lm(:,m) = - dturnover(:) |
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| 379 | |
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| 380 | dturnover(:) = biomass(:,j,iroot) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 381 | turnover(:,j,iroot) = turnover(:,j,iroot) + dturnover(:) |
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| 382 | biomass(:,j,iroot) = biomass(:,j,iroot) - dturnover(:) |
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| 383 | |
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| 384 | dturnover(:) = biomass(:,j,ifruit) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 385 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + dturnover(:) |
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| 386 | biomass(:,j,ifruit) = biomass(:,j,ifruit) - dturnover(:) |
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| 387 | |
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| 388 | ENDWHERE |
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| 389 | |
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| 390 | ENDDO |
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| 391 | |
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| 392 | ELSE |
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| 393 | |
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| 394 | ! |
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| 395 | ! 4.2 grasses: leaves, roots, fruits, sap. |
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| 396 | ! roots, fruits, and sap follow leaves. |
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| 397 | ! |
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| 398 | |
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| 399 | ! 4.2.1 critical leaf age depends on long-term temperature: |
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| 400 | ! generally, lower turnover in cooler climates. |
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| 401 | |
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| 402 | leaf_age_crit(:,j) = & |
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| 403 | MIN( leafagecrit(j) * leaf_age_crit_coeff(1) , & |
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| 404 | MAX( leafagecrit(j) * leaf_age_crit_coeff(2) , & |
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| 405 | leafagecrit(j) - leaf_age_crit_coeff(3) * & |
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| 406 | ( tlong_ref(:)-ZeroCelsius - leaf_age_crit_tref ) ) ) |
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| 407 | |
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| 408 | ! 4.2.2 loop over leaf age classes |
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| 409 | |
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| 410 | DO m = 1, nleafages |
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| 411 | |
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| 412 | WHERE ( leaf_age(:,j,m) .GT. leaf_age_crit(:,j)/2. ) |
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| 413 | |
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| 414 | turnover_rate(:) = & |
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| 415 | MIN( 0.99_r_std, dt / ( leaf_age_crit(:,j) * & |
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| 416 | ( leaf_age_crit(:,j) / leaf_age(:,j,m) )**quatre ) ) |
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| 417 | |
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| 418 | dturnover(:) = biomass(:,j,ileaf) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 419 | turnover(:,j,ileaf) = turnover(:,j,ileaf) + dturnover(:) |
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| 420 | biomass(:,j,ileaf) = biomass(:,j,ileaf) - dturnover(:) |
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| 421 | |
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| 422 | ! save leaf mass change |
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| 423 | delta_lm(:,m) = - dturnover(:) |
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| 424 | |
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| 425 | dturnover(:) = biomass(:,j,isapabove) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 426 | turnover(:,j,isapabove) = turnover(:,j,isapabove) + dturnover(:) |
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| 427 | biomass(:,j,isapabove) = biomass(:,j,isapabove) - dturnover(:) |
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| 428 | |
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| 429 | dturnover(:) = biomass(:,j,iroot) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 430 | turnover(:,j,iroot) = turnover(:,j,iroot) + dturnover(:) |
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| 431 | biomass(:,j,iroot) = biomass(:,j,iroot) - dturnover(:) |
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| 432 | |
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| 433 | dturnover(:) = biomass(:,j,ifruit) * leaf_frac(:,j,m) * turnover_rate(:) |
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| 434 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + dturnover(:) |
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| 435 | biomass(:,j,ifruit) = biomass(:,j,ifruit) - dturnover(:) |
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| 436 | |
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| 437 | ENDWHERE |
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| 438 | |
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| 439 | |
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| 440 | ENDDO |
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| 441 | |
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| 442 | ENDIF ! tree/grass ? |
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| 443 | |
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| 444 | ! |
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| 445 | ! 4.3 recalculate fraction in each leaf age class |
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| 446 | ! new fraction = new leaf mass of that fraction / new total leaf mass |
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| 447 | ! = ( old fraction*old total leaf mass + biomass change of that fraction ) / |
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| 448 | ! new total leaf mass |
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| 449 | ! |
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| 450 | |
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| 451 | DO m = 1, nleafages |
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| 452 | |
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| 453 | WHERE ( biomass(:,j,ileaf) .GT. 0.0 ) |
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| 454 | leaf_frac(:,j,m) = ( leaf_frac(:,j,m)*lm_old(:) + delta_lm(:,m) ) / biomass(:,j,ileaf) |
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| 455 | ELSEWHERE |
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[257] | 456 | leaf_frac(:,j,m) = zero |
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[64] | 457 | ENDWHERE |
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| 458 | |
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| 459 | ENDDO |
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| 460 | |
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| 461 | ENDDO ! loop over PFTs |
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| 462 | |
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| 463 | ! |
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| 464 | ! 5 new (provisional) lai |
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| 465 | ! |
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| 466 | |
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| 467 | ! lai(:,ibare_sechiba) = zero |
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| 468 | ! DO j = 2, nvm |
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| 469 | ! lai(:,j) = biomass(:,j,ileaf) * sla(j) |
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| 470 | ! ENDDO |
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| 471 | |
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| 472 | ! |
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| 473 | ! 6 definitely drop leaves if very low leaf mass during senescence. |
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| 474 | ! Also drop fruits and loose fine roots. |
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| 475 | ! Set lai to zero if necessary |
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| 476 | ! Check whether leaf regrowth is immediately allowed. |
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| 477 | ! |
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| 478 | |
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| 479 | DO j = 2,nvm |
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| 480 | |
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| 481 | shed_rest(:) = .FALSE. |
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| 482 | |
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| 483 | ! |
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| 484 | ! 6.1 deciduous trees |
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| 485 | ! |
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| 486 | |
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| 487 | IF ( tree(j) .AND. ( senescence_type(j) .NE. 'none' ) ) THEN |
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| 488 | |
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| 489 | ! check whether we shed the remaining leaves |
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| 490 | |
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[257] | 491 | WHERE ( ( biomass(:,j,ileaf) .GT. zero ) .AND. senescence(:,j) .AND. & |
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[64] | 492 | ( biomass(:,j,ileaf) .LT. (lai_initmin(j) / 2.)/sla(j) ) ) |
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| 493 | |
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| 494 | shed_rest(:) = .TRUE. |
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| 495 | |
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| 496 | turnover(:,j,ileaf) = turnover(:,j,ileaf) + biomass(:,j,ileaf) |
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| 497 | turnover(:,j,iroot) = turnover(:,j,iroot) + biomass(:,j,iroot) |
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| 498 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + biomass(:,j,ifruit) |
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| 499 | |
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[257] | 500 | biomass(:,j,ileaf) = zero |
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| 501 | biomass(:,j,iroot) = zero |
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| 502 | biomass(:,j,ifruit) = zero |
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[64] | 503 | |
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| 504 | |
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| 505 | |
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| 506 | ! reset leaf age |
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[257] | 507 | leaf_meanage(:,j) = zero |
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[64] | 508 | |
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| 509 | ENDWHERE |
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| 510 | |
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| 511 | ENDIF |
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| 512 | |
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| 513 | ! |
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| 514 | ! 6.2 grasses: also convert stems |
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| 515 | ! |
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| 516 | |
---|
| 517 | IF ( .NOT. tree(j) ) THEN |
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| 518 | |
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| 519 | ! Shed the remaining leaves if LAI very low. |
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| 520 | |
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[257] | 521 | WHERE ( ( biomass(:,j,ileaf) .GT. zero ) .AND. senescence(:,j) .AND. & |
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[64] | 522 | ( biomass(:,j,ileaf) .LT. (lai_initmin(j) / 2.)/sla(j) )) |
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| 523 | |
---|
| 524 | shed_rest(:) = .TRUE. |
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| 525 | |
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| 526 | turnover(:,j,ileaf) = turnover(:,j,ileaf) + biomass(:,j,ileaf) |
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| 527 | turnover(:,j,isapabove) = turnover(:,j,isapabove) + biomass(:,j,isapabove) |
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| 528 | turnover(:,j,iroot) = turnover(:,j,iroot) + biomass(:,j,iroot) |
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| 529 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + biomass(:,j,ifruit) |
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| 530 | |
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[257] | 531 | biomass(:,j,ileaf) = zero |
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| 532 | biomass(:,j,isapabove) = zero |
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| 533 | biomass(:,j,iroot) = zero |
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| 534 | biomass(:,j,ifruit) = zero |
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[64] | 535 | |
---|
| 536 | |
---|
| 537 | |
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| 538 | ! reset leaf age |
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[257] | 539 | leaf_meanage(:,j) = zero |
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[64] | 540 | |
---|
| 541 | ENDWHERE |
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| 542 | |
---|
| 543 | ENDIF |
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| 544 | |
---|
| 545 | ! |
---|
| 546 | ! 6.3 reset leaf age structure |
---|
| 547 | ! |
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| 548 | |
---|
| 549 | DO m = 1, nleafages |
---|
| 550 | |
---|
| 551 | WHERE ( shed_rest(:) ) |
---|
| 552 | |
---|
[257] | 553 | leaf_age(:,j,m) = zero |
---|
| 554 | leaf_frac(:,j,m) = zero |
---|
[64] | 555 | |
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| 556 | ENDWHERE |
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| 557 | |
---|
| 558 | ENDDO |
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| 559 | |
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| 560 | ENDDO |
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| 561 | |
---|
| 562 | ! |
---|
| 563 | ! 7 Elephants, cows, gazelles. No lions. |
---|
| 564 | ! Does not modify leaf age structure. |
---|
| 565 | ! |
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| 566 | |
---|
| 567 | IF ( ok_herbivores ) THEN |
---|
| 568 | |
---|
| 569 | ! herbivore activity allowed. Eat when there are leaves. Otherwise, |
---|
| 570 | ! there won't be many fruits anyway. |
---|
| 571 | |
---|
| 572 | DO j = 2,nvm |
---|
| 573 | |
---|
| 574 | IF ( tree(j) ) THEN |
---|
| 575 | |
---|
| 576 | ! trees: only leaves and fruits are affected |
---|
| 577 | |
---|
| 578 | WHERE ( biomass(:,j,ileaf) .GT. zero ) |
---|
| 579 | ! added by shilong |
---|
| 580 | WHERE (herbivores(:,j).GT. zero) |
---|
| 581 | dturnover(:) = biomass(:,j,ileaf) * dt / herbivores(:,j) |
---|
| 582 | turnover(:,j,ileaf) = turnover(:,j,ileaf) + dturnover(:) |
---|
| 583 | biomass(:,j,ileaf) = biomass(:,j,ileaf) - dturnover(:) |
---|
| 584 | |
---|
| 585 | dturnover(:) = biomass(:,j,ifruit) * dt / herbivores(:,j) |
---|
| 586 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + dturnover(:) |
---|
| 587 | biomass(:,j,ifruit) = biomass(:,j,ifruit) - dturnover(:) |
---|
| 588 | ENDWHERE |
---|
| 589 | ENDWHERE |
---|
| 590 | |
---|
| 591 | ELSE |
---|
| 592 | |
---|
| 593 | ! grasses: the whole biomass above the ground: leaves, fruits, stems |
---|
| 594 | |
---|
| 595 | WHERE ( biomass(:,j,ileaf) .GT. zero ) |
---|
| 596 | ! added by shilong |
---|
| 597 | WHERE (herbivores(:,j) .GT. zero) |
---|
| 598 | dturnover(:) = biomass(:,j,ileaf) * dt / herbivores(:,j) |
---|
| 599 | turnover(:,j,ileaf) = turnover(:,j,ileaf) + dturnover(:) |
---|
| 600 | biomass(:,j,ileaf) = biomass(:,j,ileaf) - dturnover(:) |
---|
| 601 | |
---|
| 602 | dturnover(:) = biomass(:,j,isapabove) * dt / herbivores(:,j) |
---|
| 603 | turnover(:,j,isapabove) = turnover(:,j,isapabove) + dturnover(:) |
---|
| 604 | biomass(:,j,isapabove) = biomass(:,j,isapabove) - dturnover(:) |
---|
| 605 | |
---|
| 606 | dturnover(:) = biomass(:,j,ifruit) * dt / herbivores(:,j) |
---|
| 607 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + dturnover(:) |
---|
| 608 | biomass(:,j,ifruit) = biomass(:,j,ifruit) - dturnover(:) |
---|
| 609 | ENDWHERE |
---|
| 610 | |
---|
| 611 | ENDWHERE |
---|
| 612 | |
---|
| 613 | ENDIF ! tree/grass? |
---|
| 614 | |
---|
| 615 | ENDDO ! loop over PFTs |
---|
| 616 | |
---|
| 617 | ENDIF |
---|
| 618 | |
---|
| 619 | ! |
---|
| 620 | ! 8 fruit turnover for trees |
---|
| 621 | ! |
---|
| 622 | |
---|
| 623 | DO j = 2,nvm |
---|
| 624 | |
---|
| 625 | IF ( tree(j) ) THEN |
---|
| 626 | |
---|
| 627 | !SZ correction of a mass destroying bug |
---|
| 628 | dturnover(:) = biomass(:,j,ifruit) * dt / tau_fruit(j) |
---|
| 629 | turnover(:,j,ifruit) = turnover(:,j,ifruit) + dturnover(:) |
---|
| 630 | biomass(:,j,ifruit) = biomass(:,j,ifruit) - dturnover(:) |
---|
| 631 | !!$ turnover(:,j,ifruit) = biomass(:,j,ifruit) * dt / tau_fruit(j) |
---|
| 632 | !!$ biomass(:,j,ifruit) = biomass(:,j,ifruit) - turnover(:,j,ifruit) |
---|
| 633 | |
---|
| 634 | ENDIF |
---|
| 635 | |
---|
| 636 | ENDDO |
---|
| 637 | |
---|
| 638 | ! |
---|
| 639 | ! 9 Conversion of sapwood to heartwood |
---|
| 640 | ! This is not added to "turnover" as the biomass is not lost! |
---|
| 641 | ! |
---|
| 642 | |
---|
| 643 | DO j = 2,nvm |
---|
| 644 | |
---|
| 645 | IF ( tree(j) ) THEN |
---|
| 646 | |
---|
| 647 | ! for age calculations |
---|
| 648 | |
---|
| 649 | IF ( .NOT. control%ok_dgvm ) THEN |
---|
| 650 | hw_old(:) = biomass(:,j,iheartabove) + biomass(:,j,iheartbelow) |
---|
| 651 | ENDIF |
---|
| 652 | |
---|
| 653 | ! |
---|
| 654 | ! 9.1 Calculate the rate of conversion and update masses |
---|
| 655 | ! |
---|
| 656 | |
---|
| 657 | ! above the ground |
---|
| 658 | |
---|
| 659 | sapconv(:) = biomass(:,j,isapabove) * dt / tau_sap(j) |
---|
| 660 | biomass(:,j,isapabove) = biomass(:,j,isapabove) - sapconv(:) |
---|
| 661 | biomass(:,j,iheartabove) = biomass(:,j,iheartabove) + sapconv(:) |
---|
| 662 | |
---|
| 663 | ! below the ground |
---|
| 664 | |
---|
| 665 | sapconv(:) = biomass(:,j,isapbelow) * dt / tau_sap(j) |
---|
| 666 | biomass(:,j,isapbelow) = biomass(:,j,isapbelow) - sapconv(:) |
---|
| 667 | biomass(:,j,iheartbelow) = biomass(:,j,iheartbelow) + sapconv(:) |
---|
| 668 | |
---|
| 669 | |
---|
| 670 | ! |
---|
| 671 | ! 9.2 If vegetation is not dynamic, identify the age of the heartwood |
---|
| 672 | ! to the age of the whole tree (otherwise, the age of the tree is |
---|
| 673 | ! treated in the establishment routine). |
---|
| 674 | ! Creation of new heartwood decreases the age of the plant. |
---|
| 675 | ! |
---|
| 676 | |
---|
| 677 | IF ( .NOT. control%ok_dgvm ) THEN |
---|
| 678 | |
---|
| 679 | hw_new(:) = biomass(:,j,iheartabove) + biomass(:,j,iheartbelow) |
---|
| 680 | |
---|
[257] | 681 | WHERE ( hw_new(:) .GT. zero ) |
---|
[64] | 682 | |
---|
| 683 | age(:,j) = age(:,j) * hw_old(:)/hw_new(:) |
---|
| 684 | |
---|
| 685 | ENDWHERE |
---|
| 686 | |
---|
| 687 | ENDIF |
---|
| 688 | |
---|
| 689 | ENDIF |
---|
| 690 | |
---|
| 691 | ENDDO |
---|
| 692 | |
---|
| 693 | ! |
---|
| 694 | ! history |
---|
| 695 | ! |
---|
| 696 | |
---|
| 697 | CALL histwrite (hist_id_stomate, 'LEAF_AGE', itime, & |
---|
| 698 | leaf_meanage, npts*nvm, horipft_index) |
---|
| 699 | CALL histwrite (hist_id_stomate, 'HERBIVORES', itime, & |
---|
| 700 | herbivores, npts*nvm, horipft_index) |
---|
| 701 | |
---|
| 702 | IF (bavard.GE.4) WRITE(numout,*) 'Leaving turnover' |
---|
| 703 | |
---|
| 704 | END SUBROUTINE turn |
---|
| 705 | |
---|
| 706 | END MODULE stomate_turnover |
---|