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Cohort output

General structure: per variable one data file <sitename>_<var>.out<anz_sim>

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 which are listed in daily or yearly resolution and their description

Daily output of cohort variables

<var>
content
4C variable name
unit
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

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

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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