Cohort output
General structure: per variable one data file as follows
<sitename>_<var>.<type><anz_sim>
with:
<sitename> location name
<var> content description
<type> typ of output file
<anz_sim> number of simulation
Detailed information about yearly and daily output can be found in the respective chapters.
The following tables give an overview on the names of the variables of the cohorts which are listed in daily or yearly resolution and their description. Additional, there are two output files with a special format.
The output shows the values of one tree of the respective cohort.
Daily output of cohort variables (one tree, <type> = out)
| 4C variable name*) | |||
| ass | Optimum gross assimilation rate | assi | kg DW/d |
| aevi | Daily evaporation of intercepted water | aev_i | mm/d |
| ddi | Daily drought index | drindd | - |
| dem | Demand for soil water | demand | mm/d |
| 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/d |
| interc | Interception storage (total intercepted precipitation by the cohort per m² patch area) | interc_st | mm/d |
| Ndemc_d | Daily N demand per tree | Ndemc_d | g N/d |
| Nuptc_d | Daily N uptake per tree | Nuptc_d | g N/d |
| N_pool | Daily N_pool per tree | N_pool |
g N/d |
| RedNc | Daily photosynthesis nitrogen reduction factor | RedNc | - |
| resp | Leaf respiration rate | resp | g C/d |
| respaut | Daily autotrophic respiration rate | respaut | g C/d |
| respbr | Daily respiration rate of branches | respbr | g C/d |
| respfol | Daily respiration rate of leaves | respfol | g C/d |
| respfrt | Daily respiration rate of fine roots | respfrt | g C/d |
| resphet | Daily heterotrophic respiration rate | resphet | g C/d |
| respsap | Daily respiration rate of sapwood | respsap | g C/d |
| sup | Supply of soil water to roots | supply | mm/d |
| totfpar | Total fraction of PAR absorbed per m² patch area | totFPAR | - |
Yearly output of cohort variables (one tree, <type> = out)
| <var> |
content |
4C variable name*) | unit |
|---|---|---|---|
| age | Tree-age per cohort |
x_age | years |
| ahb | Cross sectional area of heart wood at stem base | x_ahb | cm² |
| ahbasrel | Relation of heartwood to sapwood at stem base | x_ahb / Asapw | - |
| ahc | Cross sectional area of heart wood at crown base | ahc | cm² |
| ahcasrel | Relation of heartwood to sapwood at crown base | ahc / Asapw | - |
| asapw | Cross sectional area of sapwood in bole space | Asapw | cm² |
| atr | Number of alive trees per cohort | ntreea | - |
bioi |
Net biomass increment |
bio_inc | kg DM/y |
| botlayer | Number of bottom layer of crown | botLayer | - |
cpa |
crown projection area |
crown_area*ntreea | m² |
| crt | coarse root biomass | x_crt | kg DM |
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 |
|
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 |
foli |
Foliage increment |
fol_inc | kg DM/y |
frt |
Fine root biomass |
x_frt | kg DM |
frti |
Net fine root increment |
frt_inc | kg DM/y |
| frtrel | Relative fine root fraction per soil layer | frtrel(1) | - |
geff |
Growth efficiency |
geff | kg/m² |
gfol |
Gross growth rate foliage |
gfol | kg DM/y |
gfrt |
Gross growth rate fineroot |
gfrt | kg DM/y |
grossass |
Gross assimilation rate |
grossass | kg DM/y |
gsap |
Gross growth rate sapwood |
gsap | kg DM/y |
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 |
leaf |
Leaf area per tree |
t_leaf | m² |
maintres |
Maintenance respiration |
maintres | kg DM/y |
nas |
Realized net assimilation rate |
netass | kg DM/y |
| Ndemc_c | N demand per tree and year | Ndemc_c | g N/y |
| Nfol | N content of foliage | N_fol | g N |
| Npool | N pool per tree | N_pool | g N |
npp |
NPP |
npp | kg DM/y |
| 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 N/y |
| rdpt | Rooting depth calculated with TRAP model | x_rdp | cm |
| rooteff | Root uptake efficiency factor | rooteff(1) | - |
sap |
Sapwood biomass |
x_sap | kg DM |
sfol |
Senescence rate foliage |
sfol | kg DM/y |
sfrt |
Senescence rate fineroot |
sfrt | kg DM/y |
spn |
Species number of the cohort |
species | - |
ssap |
Senescence rate sapwood |
ssap | kg DM/y |
stem |
Stemwood biomass increment |
stem_inc | kg DM/y |
str |
Number of stress years |
x_stress | - |
tdb |
Total dead biomass per cohort |
dbio | kg DM/y |
| toplayer | Number of top layer of crown | topLayer | - |
trman |
Total number of harvested trees per cohort |
ntreem | - |
ttb |
Total tree biomass |
totbio | kg DM |
| watleft | Water left in next layer | watleft |
Special output of cohort variables (one tree, <type> = res)
| allo | Intermediate results from allocation module |
| prod | Daily evaporation of intercepted water |
allo: Intermediate results from allocation module for one tree
| description | |||
| year | time_cur | actual year | - |
| coh | ident | identification number of cohort | - |
| NPP | NPP | net primary production | kg DW/d |
| dbh | DBH | diameter at breast height | cm |
| growthrate | growthrate | height growthrate | cm |
| Fnew | Fnew | new foliage mass | kg DW |
| Fmax | Fmax_old | maximum foliage biomass | kg DW |
| Htnew | Htnew | total tree height | cm |
| lambdaf | lf | solution of equation system of partitioning | - |
| lambdas | ls | solution of equation system of partitioning | - |
| lambdar | lr | solution of equation system of partitioning | - |
| lambdac | lc | solution of equation system of partitioning |
- |
| x1 | x1 | solution of quadratic equation of partitioning | - |
| x2 | x2 | solution of quadratic equation of partitioning | - |
prod: Intermediate results from NPP module for one tree
| description | |||
| year | time_cur | actual year | - |
| day | iday | actual day | - |
| coh | ident | identification number of cohort | - |
| PAR | PAR | total available Photosynthetically Aactive Radiation | mol/m² |
| totFPAR | totFPAR | total fraction of Photosynthetically Aactive Radiation absorbed per m² patch area | - |
| LUE | LUE | light use efficiency | g C/mmol |
| NPP | NPP | new foliage mass | kg DW |
| netass | netass | realized net assimilation rate | kg DW/d |
| grossass | grossass | gross assimilation rate | kg DW/d |
| nDaysPS | ndaysps | number of growing season days per time step of photosynthesis module | - |
about 4C | news | 4C guide | theory | applications | publications | contact