BASFC2 - (savanna only) A basal factor used to calculate the N reaction; if not running savanna, set to 1.0.
BASFCT - (savanna only) A constant used to calculate the tree basal area; it is equal to (form factor * wood density * tree height); if not running savanna, set to 1.0.
BTOLAI - Biomass to leaf area index (LAI) conversion factor for trees. This is a biome-specific parameters. Values used at NREL include:
| arctic tundra | 0.008 |
| arid savanna/shrubland | 0.007 |
| boreal forest | 0.004 |
| coniferous/deciduous mix forest | 0.007 |
| grassland | 0.008 |
| maritime coniferous forest | 0.004 |
| temperate coniferous forest | 0.004 |
| temperate coniferous savanna | 0.004 |
| temperate deciduous savanna | 0.01 |
| temperate mixed savanna | 0.007 |
| tropical evergreen forest | 0.01 |
| tropical savanna | 0.006 |
| warm temperate deciduous forest | 0.01 |
CERFOR(1,1,1) - Minimum C / N ratio for leaves.
Valid Range: 1.0 to 200.0
CERFOR(1,1,2) - Minimum C / P ratio for leaves.
Valid Range: 1.0 to 9999.0
CERFOR(1,1,3) - Minimum C / S ratio for leaves.
Valid Range: 1.0 to 9999.0
CERFOR(1,2,1) - Minimum C / N ratio for fine roots.
Valid Range: 1.0 to 200.0
CERFOR(1,2,2) - Minimum C / P ratio for fine roots.
Valid Range: 1.0 to 9999.0
CERFOR(1,2,3) - Minimum C / S ratio for fine roots.
Valid Range: 1.0 to 9999.0
CERFOR(1,3,1) - Minimum C / N ratio for fine branches.
Valid Range: 1.0 to 1000.0
CERFOR(1,3,2) - Minimum C / P ratio for fine branches.
Valid Range: 1.0 to 9999.0
CERFOR(1,3,3) - Minimum C / S ratio for fine branches.
Valid Range: 1.0 to 9999.0
CERFOR(1,4,1) - Minimum C / N ratio for large wood.
Valid Range: 1.0 to 1500.0
CERFOR(1,4,2) - Minimum C / P ratio for large wood.
Valid Range: 1.0 to 9999.0
CERFOR(1,4,3) - Minimum C / S ratio for large wood.
Valid Range: 1.0 to 9999.0
CERFOR(1,5,1) - Minimum C / N ratio for coarse roots.
Valid Range: 1.0 to 1500.0
CERFOR(1,5,2) - Minimum C / P ratio for coarse roots.
Valid Range: 1.0 to 9999.0
CERFOR(1,5,3) - Minimum C / S ratio for coarse roots.
Valid Range: 1.0 to 9999.0
CERFOR(2,1,1) - Maximum C / N ratio for leaves.
Valid Range: 1.0 to 200.0
CERFOR(2,1,2) - Maximum C / P ratio for leaves.
Valid Range: 1.0 to 9999.0
CERFOR(2,1,3) - Maximum C / S ratio for leaves.
Valid Range: 1.0 to 9999.0
CERFOR(2,2,1) - Maximum C / N ratio for fine roots.
Valid Range: 1.0 to 200.0
CERFOR(2,2,2) - Maximum C / P ratio for fine roots.
Valid Range: 1.0 to 9999.0
CERFOR(2,2,3) - Maximum C / S ratio for fine roots.
Valid Range: 1.0 to 9999.0
CERFOR(2,3,1) - Maximum C / N ratio for fine branches.
Valid Range: 1.0 to 1000.0
CERFOR(2,3,2) - Maximum C / P ratio for fine branches.
Valid Range: 1.0 to 9999.0
CERFOR(2,3,3) - Maximum C / S ratio for fine branches.
Valid Range: 1.0 to 9999.0
CERFOR(2,4,1) - Maximum C / N ratio for large wood.
Valid Range: 1.0 to 1500.0
CERFOR(2,4,2) - Maximum C / P ratio for large wood.
Valid Range: 1.0 to 9999.0
CERFOR(2,4,3) - Maximum C / S ratio for large wood.
Valid Range: 1.0 to 9999.0
CERFOR(2,5,1) - Maximum C / N ratio for coarse roots.
Valid Range: 1.0 to 1500.0
CERFOR(2,5,2) - Maximum C / P ratio for coarse roots.
Valid Range: 1.0 to 9999.0
CERFOR(2,5,3) - Maximum C / S ratio for coarse roots.
Valid Range: 1.0 to 9999.0
CERFOR(3,1,1) - Initial C / N ratio for leaves.
Valid Range: 1.0 to 200.0
CERFOR(3,1,2) - Initial C / P ratio for leaves.
Valid Range: 1.0 to 9999.0
CERFOR(3,1,3) - Initial C / S ratio for leaves.
Valid Range: 1.0 to 9999.0
CERFOR(3,2,1) - Initial C / N ratio for fine roots.
Valid Range: 1.0 to 200.0
CERFOR(3,2,2) - Initial C / P ratio for fine roots.
Valid Range: 1.0 to 9999.0
CERFOR(3,2,3) - Initial C / S ratio for fine roots.
Valid Range: 1.0 to 9999.0
CERFOR(3,3,1) - Initial C / N ratio for fine branches.
Valid Range: 1.0 to 1000.0
CERFOR(3,3,2) - Initial C / P ratio for fine branches.
Valid Range: 1.0 to 9999.0
CERFOR(3,3,3) - Initial C / S ratio for fine branches.
Valid Range: 1.0 to 9999.0
CERFOR(3,4,1) - Initial C / N ratio for large wood.
Valid Range: 1.0 to 1500.0
CERFOR(3,4,2) - Initial C / P ratio for large wood.
Valid Range: 1.0 to 9999.0
CERFOR(3,4,3) - Initial C / S ratio for large wood.
Valid Range: 1.0 to 9999.0
CERFOR(3,5,1) - Initial C / N ratio for coarse roots.
Valid Range: 1.0 to 1500.0
CERFOR(3,5,2) - Initial C / P ratio for coarse roots.
Valid Range: 1.0 to 9999.0
CERFOR(3,5,3) - Initial C / S ratio for coarse roots.
Valid Range: 1.0 to 9999.0
CO2ICE(2,1,1) - In a forest system, the effect on minimum C:N ratio of doubling the atmospheric CO 2 concentration from 350 ppm to 700 ppm. A value of 1 will have no effect. A reduction will have a negative effect. And an increase will have a positive effect.
Valid Range: 0.5 to 1.5
CO2ICE(2,1,2) - In a forest system, the effect on minimum C / P ratio of doubling the atmospheric CO 2 concentration from 350 ppm to 700 ppm. A value of 1 will have no effect. A reduction will have a negative effect. And an increase will have a positive effect.
Valid Range: 0.5 to 1.5
CO2ICE(2,1,3) - In a forest system, the effect on minimum C / S ratio of doubling the atmospheric CO 2 concentration from 350 ppm to 700 ppm. A value of 1 will have no effect. A reduction will have a negative effect. And an increase will have a positive effect.
Valid Range: 0.5 to 1.5
CO2ICE(2,2,1) - In a forest system, the effect on maximum C / N ratio of doubling the atmospheric CO 2 concentration from 350 ppm to 700 ppm. A value of 1 will have no effect. A reduction will have a negative effect. And an increase will have a positive effect.
Valid Range: 0.5 to 1.5
CO2ICE(2,2,2) - In a forest system, the effect on maximum C / P ratio of doubling the atmospheric CO 2 concentration from 350 ppm to 700 ppm. A value of 1 will have no effect. A reduction will have a negative effect. And an increase will have a positive effect.
Valid Range: 0.5 to 1.5
CO2ICE(2,2,3) - In a forest system, the effect on maximum C / S ratio of doubling the atmospheric CO 2 concentration from 350 ppm to 700 ppm. A value of 1 will have no effect. A reduction will have a negative effect. And an increase will have a positive effect.
Valid Range: 0.5 to 1.5
CO2IPR(2) - In a forest system, the effect on plant production of doubling the atmospheric CO 2 concentration from 350 ppm to 700 ppm. A value of 1 will have no effect. A reduction will have a negative effect. And an increase will have a positive effect.
Valid Range: 0.5 to 1.5
CO2IRS(2) - In a forest system, the effect on root-shoot ratio of doubling the atmospheric CO 2 concentration from 350 ppm to 700 ppm. A value of 1 will have no effect. A reduction will have a negative effect. And an increase will have a positive effect.
Valid Range: 0.5 to 1.5
CO2ITR(2) - In a forest system, the effect on transpiration rate of doubling the atmospheric CO 2 concentration from 350 ppm to 700 ppm. A value of 1 will have no effect. A reduction will have a negative effect. And an increase will have a positive effect.
Valid Range: 0.5 to 1.5
DECID - Flag for type of forest:
0 = forest is continuous evergreen
1 = forest is temperate deciduous
2 = forest is drought-deciduous
Valid Values: 0, 1, or 2
DECW1 - Decomposition rate for WOOD1 (dead fine branch) per year (/y).
Valid Range: 0.0 to 5.0
DECW2 - Decomposition rate for WOOD2 (dead large wood) per year (/y).
Valid Range: 0.0 to 5.0
DECW3 - Decomposition rate for WOOD3 (dead coarse root) per year (/y).
Valid Range: 0.0 to 5.0
DEL13C - Delta 13C value for stable isotope labeling.
FCFRAC(1,1) - C allocation fraction of new leaves for juvenile forest.
Valid Range: 0.0 to 1.0
FCFRAC(2,1) - C allocation fraction of new fine roots for juvenile forest.
Valid Range: 0.0 to 1.0
FCFRAC(3,1) - C allocation fraction of new fine branches for juvenile forest.
Valid Range: 0.0 to 1.0
FCFRAC(4,1) - C allocation fraction of new large wood for juvenile forest.
Valid Range: 0.0 to 1.0
FCFRAC(5,1) - C allocation fraction of new coarse roots for juvenile forest.
Valid Range: 0.0 to 1.0
FCFRAC(1,2) - C allocation fraction of old leaves for mature forest.
Valid Range: 0.0 to 1.0
FCFRAC(2,2) - C allocation fraction of old fine roots for mature forest.
Valid Range: 0.0 to 1.0
FCFRAC(3,2) - C allocation fraction of old fine branches for mature forest.
Valid Range: 0.0 to 1.0
FCFRAC(4,2) - C allocation fraction of old large wood for mature forest.
Valid Range: 0.0 to 1.0
FCFRAC(5,2) - C allocation fraction of old coarse roots for mature forest.
Valid Range: 0.0 to 1.0
FORRTF(1) - Fraction of N retranslocated from green forest leaves at death.
Valid Range: 0.0 to 1.0
FORRTF(2) - Fraction of P retranslocated from green forest leaves at death.
Valid Range: 0.0 to 1.0
FORRTF(3) - Fraction of S retranslocated from green forest leaves at death.
Valid Range: 0.0 to 1.0
KLAI - Large wood mass in grams per square meter (g C /m2) at which half of the theoretical maximum leaf area ( MAXLAI) is achieved.
LAITOP - Parameter determining relationship between LAI and forest production.
LEAFDR(1) - Monthly death rate fraction for leaves for month 1.
Valid Range: 0.0 to 1.0
LEAFDR(2) - Monthly death rate fraction for leaves for month 2.
Valid Range: 0.0 to 1.0
LEAFDR(3) - Monthly death rate fraction for leaves for month 3.
Valid Range: 0.0 to 1.0
LEAFDR(4) - Monthly death rate fraction for leaves for month 4.
Valid Range: 0.0 to 1.0
LEAFDR(5) - Monthly death rate fraction for leaves for month 5.
Valid Range: 0.0 to 1.0
LEAFDR(6) - Monthly death rate fraction for leaves for month 6.
Valid Range: 0.0 to 1.0
LEAFDR(7) - Monthly death rate fraction for leaves for month 7.
Valid Range: 0.0 to 1.0
LEAFDR(8) - Monthly death rate fraction for leaves for month 8.
Valid Range: 0.0 to 1.0
LEAFDR(9) - Monthly death rate fraction for leaves for month 9.
Valid Range: 0.0 to 1.0
LEAFDR(10) - Monthly death rate fraction for leaves for month 10.
Valid Range: 0.0 to 1.0
LEAFDR(11) - Monthly death rate fraction for leaves for month 11.
Valid Range: 0.0 to 1.0
LEAFDR(12) - Monthly death rate fraction for leaves for month 12.
Valid Range: 0.0 to 1.0
MAXLAI - Theoretical maximum leaf area index achieved in mature forest.
Valid Range: 0.0 to 50.0
MAXLDR - Multiplier for effect of N availability on leaf death rates (continuously growing forest systems only); a ratio between death rate at unlimited vs. severely limited N status.
Valid Range: 0.0 to 1.0
PPDF(1) - Optimum temperature for production for parameterization of a Poisson Density Function curve to simulate temperature effect on growth.
Valid Range: 10.0 to 40.0
PPDF(2) - Maximum temperature for production for parameterization of a Poisson Density Function curve to simulate temperature effect on growth.
Valid Range: 20.0 to 50.0
PPDF(3) - Left curve shape for parameterization of a Poisson Density Function curve to simulate temperature effect on growth.
Valid Range: 0.0 to 1.0
PPDF(4) - Right curve shape for parameterization of a Poisson Density Function curve to simulate temperature effect on growth.
Valid Range: 0.0 to 10.0
PRDX(2) - Gross forest production.
Valid Range: 0.0 to 9999.0
PRDX(3) - Maximum forest production excluding respiration.
Valid Range: 0.0 to 9999.0
SAPK Controls the ratio of sapwood to total stem wood, expressed as gC m-2; it is equal to both the large wood mass (RLWODC) at which half of large wood is sapwood, and the theoretical maximum sapwood mass achieved in mature forest.
SITPOT - (savanna only) Site potential; the N fraction. A measure of the aboveground herbaceous layer production in kilograms per hectare per year in the absence of trees. (SITPOT = 2400 * monthly N availability in grams of N per square meter per year.)
Valid Range: 1200.0 to 9600.0
SNFRMX(2) - Symbiotic N fixation maximum for forest in grams of nitrogen fixed per gram of carbon of new growth (g N fixed/g C new growth) .
Valid Range: 0.0 to 1.0
SWOLD - Year at which to switch from juvenile to mature forest carbon allocation fractions for tree production.
Valid Range: simulation year range
WDLIG(1) - Lignin fraction for forest system leaf production.
Valid Range: 0.0 to 1.0
WDLIG(2) - Lignin fraction for forest system fine root production.
Valid Range: 0.0 to 1.0
WDLIG(3) - Lignin fraction for forest system fine branch production.
Valid Range: 0.0 to 1.0
WDLIG(4) - Lignin fraction for forest system large wood production.
Valid Range: 0.0 to 1.0
WDLIG(5) - Lignin fraction for forest system coarse root production.
Valid Range: 0.0 to 1.0
WOODDR(1) - Controls the proportion of leaves that drop during senescence month or at the end of the growing season when DECID = 1 or 2. This is especially useful for drought-deciduous systems where only a portion of the leaves drop. Also useful when you are attempting to simulate a deciduous/coniferous mixed system of forest.
Valid Range: 0.0 to 1.0
WOODDR(2) - Monthly death rate fraction for fine root component.
Valid Range: 0.0 to 1.0
WOODDR(3) - Monthly death rate fraction for fine branch component.
Valid Range: 0.0 to 1.0
WOODDR(4) - Monthly death rate fraction for large wood component.
Valid Range: 0.0 to 1.0
WOODDR(5) - Monthly death rate fraction for coarse root component.
Valid Range: 0.0 to 1.0