A dataset containing parameter sets from published studies with 3PG
i_parameters_litA data frame with 110 rows and 124 variables:
id of the parameter set
species scientific name
whether the parameter set was was used in even or uneven stands.
whether the parameter set was used in monocultures or mixed stands.
year of publication
geographical region in which the parameters were tested. NAs values are allowed.
country or countries in which the parameters were tested.
any relevant remark about how the parameters were processed. NAs are allowed.
short reference to publication
any relevant comment about the parameters present in the publication. NAs are allowed.
full reference to publication
a link to the publication, e.g. doi
Foliage:stem partitioning ratio - D = 2 cm
Foliage:stem partitioning ratio - D = 20 cm
Constant in the stem mass v. diam. relationship
Power in the stem mass v. diam. relationship
Maximum fraction of NPP to roots
Minimum fraction of NPP to roots
Maximum litterfall rate
Litterfall rate at t = 0
Age at which litterfall rate has median value
Average monthly root turnover rate
If deciduous, leaves are produced at end of this month
If deciduous, leaves all fall at start of this month
Minimum temperature for growth
Optimum temperature for growth
Maximum temperature for growth
Days production lost per frost day
Moisture ratio deficit for fq = 0.5
Power of moisture ratio deficit
Assimilation enhancement factor at 700 ppm
Canopy conductance enhancement factor at 700 ppm
Value of m when FR = 0
Value of fNutr when FR = 0
Power of (1-FR) in fNutr
Maximum stand age used in age modifier
Power of relative age in function for fAge
Relative age to give fAge = 0.5
Mortality rate for large t
Seedling mortality rate (t = 0)
Age at which mortality rate has median value
Shape of mortality response
Max. stem mass per tree - 1000 trees/hectare
Power in self-thinning rule
Fraction mean single-tree foliage biomass lost per dead tree
Fraction mean single-tree root biomass lost per dead tree
Fraction mean single-tree stem biomass lost per dead tree
Specific leaf area at age 0
Specific leaf area for mature leaves
Age at which specific leaf area = (SLA0+SLA1)/2
Extinction coefficient for absorption of PAR by canopy
Age at canopy closure
Maximum proportion of rainfall evaporated from canopy
LAI for maximum rainfall interception
LAI for 50% reduction of VPD in canopy
Canopy quantum efficiency
Ratio NPP/GPP
Minimum canopy conductance
Maximum canopy conductance
LAI for maximum canopy conductance
Defines stomatal response to VPD
Canopy boundary layer conductance
The ratio of diffusivities of CO2 and water vapour in air
d13C difference of modelled tissue and new photosynthate
Fractionation against 13C in diffusion
Enzymatic fractionation by Rubisco
Branch and bark fraction at age 0
Branch and bark fraction for mature stands
Age at which fracBB = (fracBB0+fracBB1)/2
Minimum basic density - for young trees
Maximum basic density - for older trees
Age at which rho = (rhoMin+rhoMax)/2
Constant in the stem height relationship
Power of DBH in the stem height relationship
Power of competition in the stem height relationship
Constant in the stem volume relationship
Power of DBH in the stem volume relationship
Power of height in the stem volume relationship
Power of DBH^2 x height in the stem volume relationship
Crown shape (1=cone, 2=ellipsoid, 3=half-ellipsoid, 4=rectangular)
Constant in the crown diameter relationship
Power of DBH in the crown diameter relationship
Power of height in the crown diameter relationship
Power of competition in the crown diameter relationship
Power of relative height in the crown diameter relationship
Constant in the LCL relationship
Power of DBH in the LCL relationship
Power of LAI in the LCL relationship
Power of competition in the LCL relationship
Power of relative height in the LCL relationship
Constant in the relationship for Weibull scale parameter of D distribution
Slope of DBH in relationship for Weibull scale parameter of D distribution
Slope of relative height in relationship for Weibull scale parameter of D distribution
Slope of age in relationship for Weibull scale parameter of D distribution
Slope of competition in relationship for Weibull scale parameter of D distribution
Constant in the relationship for Weibull shape parameter of D distribution
Slope of DBH in relationship for Weibull shape parameter of D distribution
Slope of relative height in relationship for Weibull shape parameter of D distribution
Slope of age in relationship for Weibull shape parameter of D distribution
Slope of competition in relationship for Weibull shape parameter of D distribution
Constant in the relationship for Weibull location parameter of D distribution
Slope of DBH in relationship for Weibull location parameter of D distribution
Slope of relative height in relationship for Weibull location parameter of D distribution
Slope of age in relationship for Weibull location parameter of D distribution
Slope of competition in relationship for Weibull location parameter of D distribution
Constant in the relationship for Weibull scale parameter of ws distribution
Slope of DBH in relationship for Weibull scale parameter of ws distribution
Slope of relative height in relationship for Weibull scale parameter of ws distribution
Slope of age in relationship for Weibull scale parameter of ws distribution
Slope of competition in relationship for Weibull scale parameter of ws distribution
Constant in the relationship for Weibull shape parameter of ws distribution
Slope of DBH in relationship for Weibull shape parameter of ws distribution
Slope of relative height in relationship for Weibull shape parameter of ws distribution
Slope of age in relationship for Weibull shape parameter of ws distribution
Slope of competition in relationship for Weibull shape parameter of ws distribution
Constant in the relationship for Weibull location parameter of ws distribution
Slope of DBH in relationship for Weibull location parameter of ws distribution
Slope of relative height in relationship for Weibull location parameter of ws distribution
Slope of age in relationship for Weibull location parameter of ws distribution
Slope of competition in relationship for Weibull location parameter of ws distribution
Intercept of net v. solar radiation relationship
Slope of net v. solar radiation relationship
Molecular weight of dry matter
Conversion of solar radiation to PAR
Each row refers to an unique parameter set.
The function get_parameters eases the use to this dataset.