Carbon-related functions

Low-level functions used in the calculation of carbon balance.

Usage

carbon_belowgroundSapwoodStructuralBiomass(SA, L, V, woodDensity)

carbon_sapwoodStructuralBiomass(SA, H, L, V, woodDensity)

carbon_belowgroundHeartwoodStructuralBiomass(DBH, SA, L, V, woodDensity)

carbon_heartwoodStructuralBiomass(DBH, SA, H, L, V, woodDensity)

carbon_sapwoodStarchCapacity(SA, H, L, V, woodDensity, conduit2sapwood)

carbon_carbonCompartments(x, biomassUnits = "g_m2")

carbon_sugarStarchDynamicsLeaf(sugarConc, starchConc, eqSugarConc)

carbon_sugarStarchDynamicsStem(sugarConc, starchConc, eqSugarConc)

carbon_osmoticWaterPotential(sugarConc, temp, nonSugarConc)

carbon_sugarConcentration(osmoticWP, temp, nonSugarConc)

carbon_relativeSapViscosity(sugarConc, temp)

carbon_leafStructuralBiomass(LAI, N, SLA)

carbon_twigStructuralBiomass(LAI, N, SLA, r635)

carbon_leafStarchCapacity(LAI, N, SLA, leafDensity)

carbon_abovegroundSapwoodStructuralBiomass(SA, H, woodDensity)

carbon_abovegroundHeartwoodStructuralBiomass(DBH, SA, H, woodDensity)

Arguments

SA: Sapwood area (cm2).
L: Coarse root length (mm) for each soil layer.
V: Proportion of fine roots in each soil layer.
woodDensity: Wood density (dry weight over volume).
H: Plant height (cm).
DBH: Tree diameter (cm).
conduit2sapwood: Proportion of sapwood corresponding to conducive elements (vessels or tracheids) as opposed to parenchymatic tissue.
x: An object of class growthInput.
biomassUnits: A string for output biomass units, either "g_ind" (g per individual) or "g_m2" (g per square meter).
sugarConc: Concentration of soluble sugars (mol/l).
starchConc: Concentration of starch (mol/l)
eqSugarConc: Equilibrium concentration of soluble sugars (mol/l).
temp: Temperature (degrees Celsius).
nonSugarConc: Concentration of inorganic solutes (mol/l).
osmoticWP: Osmotic water potential (MPa).
LAI: Leaf area index.
N: Density (ind·ha-1).
SLA: Specific leaf area (mm2/mg = m2/kg).
leafDensity: Density of leaf tissue (dry weight over volume).

Value

Values returned for each function are:

carbon_leafStarchCapacity: Capacity of storing starch in the leaf compartment (mol gluc/ind.).
carbon_leafStructuralBiomass: Leaf structural biomass (g dry/ind.)
carbon_sapwoodStarchCapacity: Capacity of storing starch in the sapwood compartment (mol gluc/ind.).
carbon_sapwoodStructuralBiomass: Sapwood structural biomass (g dry/ind.)
carbon_sapwoodStructuralLivingBiomass: Living sapwood (parenchyma) structural biomass (g dry/ind.)
carbon_sugarConcentration: Sugar concentration (mol gluc/l)
carbon_osmoticWaterPotential: Osmotic component of water potential (MPa)
carbon_relativeSapViscosity: Relative viscosity of sapwood with respect to pure water (according to Forst et al. (2002)).
carbon_sugarStarchDynamicsLeaf: Rate of conversion from sugar to starch in leaf (mol gluc/l/s).
carbon_sugarStarchDynamicsStem: Rate of conversion from sugar to starch in leaf (mol gluc/l/s).
carbon_carbonCompartments: A data frame with the size of compartments for each plant cohort, in the specified units.

References

Forst P, Wermer F, Delgado A (2002). On the pressure dependence of the viscosity of aqueous sugar solutions. Rheol Acta 41: 369–374 DOI 10.1007/s00397-002-0238-y

Author

Miquel De Cáceres Ainsa, CREAF

Examples