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| 4C variable name | |||
| ass | Optimum gross assimilation rate | assi | kg DW/d |
| aevi | Daily evaporation of intercepted water | aev_i | mm/day |
| ddi | Daily drought index | drindd | - |
| dem | Demand for soil water | demand | mm/day |
| dips | Drought index for Photosynthesis calulation | drindps | cum |
| gp | Unstressed stomatal conductance | gp | mol/m²*d |
| gsdps | Number of growingseason days per time step of photosynthesis | ndaysps | - |
| intcap | Interception (precipitation absorbed by the cohort per m² patch area) | sum of intcap(layer) | mm/day |
| interc | Interception storage (total intercepted precipitation by the cohort per m² patch area) | interc_st | mm/day |
| Ndemc_d | Daily N demand per tree | g | |
| Nuptc_d | Daily N uptake per tree | g | |
| N_pool | Daily N_pool per tree | g | |
| RedNc | Daily photosynthesis nitrogen reduction factor | - | |
| res | Leaf respiration rate | resp | kg DW/d |
| resbr | Daily respiration rate of br | respbr | |
| ressap | Daily respiration rate of sapwood | respsap | |
| resfrt | Daily respiration rate of frt | respfrt | |
| sup | Supply of soil water to roots | supply | mm/day |
Yearly output of cohort variables
| <var> |
content |
4C variable name | unit |
|---|---|---|---|
| age | Tree-age per cohort |
age | years |
| atr | Number of alive trees per cohort | ntreea | /td> |
bioi |
Net biomass increment |
bio_inc | kg DM/year/tree |
cpa |
crown projection area |
crown_area*ntreea | m² |
daybb |
Day of bud burst |
day_bb | DOY |
dcrb |
Diameter of stem at crown base |
dcrb | cm |
diac |
Drought index for Allocation calculation |
drindal/ndaysgr | cum |
diam |
Diameter at breast height |
diam | cm |
dtr |
Number of dead trees per cohort |
ntreed | - |
| dwd | Stem biomass of dead trees per cohort | ntreed*(x_sap+x_hrt) | kg DM |
fol |
Foliage biomass |
x_fol | kg DM/tree |
foli |
Foliage increment |
fol_inc | kg DM/year/tree |
frt |
Fine root biomass |
x_frt | kg DM/tree |
frti |
Net fine root increment |
frt_inc | kg DM/year/tree |
| frtrel | Relative fine root fraction per soil layer | frtrel(1) | - |
geff |
Growth efficiency |
geff | kg/m² |
gfol |
Gross growth rate foliage |
gfol | kg DM/year/tree |
gfrt |
Gross growth rate fineroot |
gfrt | kg DM/year/tree |
grossass |
Gross assimilation rate |
grossass | kg DM/year/tree |
gsap |
Gross growth rate sapwood |
gsap | kg DM/year/tree |
gsd |
Number of growing season days per year |
ndaysgr | days |
hbo |
Bole height |
x_hbole | cm |
hea |
Number of years without stress |
x_health | years |
hei |
Total tree height |
height | cm |
hrt |
Heartwood biomass |
x_hrt | kg DM/tree |
leaf |
Leaf area per tree |
t_leaf | m² |
maintres |
Maintenance respiration |
maintres | kg DM/year/tree |
nas |
Realized net assimilation rate |
netass | kg DM/year/tree |
| Ndemc_c | N demand per tree and year | Ndemc_c | g/year |
npp |
NPP |
npp | kg DM/year/tree |
| Nstr | Ratio of N uptake to demand per tree and year | Nuptc_c /Ndemc_c | - |
| Nuptc_c | N uptake per tree and year | Nuptc_c | g/year |
| rooteff | Root uptake efficiency factor | rooteff(1) | - |
sap |
Sapwood biomass |
x_sap | kg DM/tree |
sfol |
Senescence rate foliage |
sfol | kg DM/year/tree |
sfrt |
Senescence rate fineroot |
sfrt | kg DM/year/tree |
spn |
Species number of the cohort |
species | - |
ssap |
Senescence rate sapwood |
ssap | kg DM/year/tree |
stem |
Stemwood biomass increment |
stem_inc | kg DM/year/tree |
str |
Number of stress years |
x_stress | years |
tdb |
Total dead biomass per cohort |
dbio | kg DM/year/tree |
trman |
Total number of harvested trees per cohort |
ntreem | - |
ttb |
Total tree biomass |
totbio | kg DM/tree |
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