Table 1 Eco-physiological parameters setting and acquisition ways in the BBGC
Parameters | Values | Symbol | Units | Sources |
|---|---|---|---|---|
Yearday to start new growth | 110 | YSNG | Day of year | [25] |
Yearday to end litterfall | 280 | YEL | Day of year | [25] |
Transfer growth period as fraction of growing season | 0.9 | TGP | / | Optimized |
Litterfall as fraction of growing season | 0.46 | LAFO | / | Optimized |
Annual leaf and fine root turnover fraction | 1.0 | LFRT | 1/yr | Model default value |
Annual whole-plant mortality fraction | 0 | WPM | 1/yr | Field measurement |
Annual fire mortality fraction | 0 | FMF | 1/yr | Field measurement |
New fine root C: new leaf C | 2.5 | FRC:LC | / | Optimized |
Current growth proportion | 0.47 | CGP | / | Optimized |
C:N of leaves | 18.7 | C:Nleaf | kgC/kgN | Field measurement |
C:N of leaf litter, after retranslocation | 65 | C:Nlit | kgC/kgN | Optimized |
C:N of fine roots | 77.35 | C:Nroot | kgC/kgN | Field measurement |
Leaf litter labile proportion | 0.39 | Llab | / | Model default value |
Leaf litter cellulose proportion | 0.44 | Lcel | / | Model default value |
Leaf litter lignin proportion | 0.17 | Llig | / | Model default value |
Fine root labile proportion | 0.3 | Rlab | / | Model default value |
Fine root cellulose proportion | 0.45 | Rcel | / | Model default value |
Fine root lignin proportion | 0.25 | Rlig | / | Model default value |
Canopy water interception coefficient | 0.021 | CWIC | 1/LAI/d | Model default value |
Canopy light extinction coefficient | 0.37 | CLEC | / | Optimized |
All-sided to projected leaf area ratio | 2.0 | LAIall:proj | / | Model default value |
Canopy average specific leaf area | 13.24 | SLA | m2/kgC | Field measurement |
Ratio of shaded SLA:sunlit SLA | 2.0 | SLAsha:sun | / | Model default value |
Fraction of leaf N in Rubisco | 0.15 | FLNR | / | Model default value |
Maximum stomatal conductance | 0.007 | gmax | m/s | [25] |
Cuticular conductance | 0.00001 | gcut | m/s | Model default value |
Boundary layer conductance | 0.04 | gbl | m/s | Model default value |
Leaf water potential: start of conductance reduction | – 0.6 | LWPs | Mpa | Model default value |
Leaf water potential: complete conductance reduction | – 2.3 | LWPc | Mpa | Model default value |
Vapor pressure deficit: start of conductance reduction | 930 | VPDs | Pa | Model default value |
Vapor pressure deficit: complete conductance reduction | 4100 | VPDc | Pa | Model default value |