Table 2 Generic (apply to all taxa) parameter values used in the simulations
Parameter | Description | Parameter value | Source |
|---|---|---|---|
Site variables | |||
 Latitude | Latitude (degrees) | 46N | Dickson et al. 2000 |
 Soil type | Soil texture class (USDA Natural Resources Conservation Service) | SALO (sandy loam) | Dickson et al. 2000 |
 RootingDepth | Depth of rooting zone (mm) | 1000 | Unpublished data |
 PrecLossFrac | Fraction of precipitation not entering soil | 0.0 | Expert judgment based on flat terrain |
 LeakageFrac | Fraction of water in excess of field capacity that drains out of the rooting zone | 1.0 | Unpublished data |
 PrecIntConst | Fraction of precipitation that is intercepted | 0.11 | Expert judgment |
Canopy variables | |||
 TOfol | Fraction of foliage lost/year | 1.0 | Definition of deciduous |
 k | Canopy light extinction coefficient (unitless) | 0.61 | Ryu et al. (2008) |
Photosynthesis variables | |||
 BFolResp | Foliar respiration as a fraction of max. Photosynthetic rate (mo−1) | 0.10 | Gustafson et al. 2016 |
 AmaxA/B | Intercept (A) and slope (B) of relationship between foliar N and max. Net photosynthetic rate (μmol CO2 m−2 leaf s− 1) | 5.3/21.5 | Aber et al. (1996) |
 PsnAgeRed | Tuning parameter controlling senescence mortality (respiration > productivity) (unitless) | 5 |  |
 Q10 | Q10 value for foliar respiration (unitless) | 2.0 | Aber et al. 1996 |
Carbon balance variables | |||
 TOroot | Fraction of root biomass lost to damage or death (year−1) | 0.02 | Gustafson et al. 2016 |
 TOwood | Fraction of wood biomass lost to damage or death (year−1) | 0.01 | Gustafson et al. 2016 |
 MaintResp | Tissue maintenance respiration as a fraction of biomass (mo−1) | 0.002 | Gustafson et al. 2016 |
 dNSC | Fraction of NSC allocated to structural biomass pools (mo−1) | 0.05 | Gustafson et al. 2016 |