Chonggang Xu - CESM

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Leaf-mass-based functional nitrogen availability (FNAm)=Total plant functional nitrogen/total leaf biomass FNAm, leaf layer 1 FNAm, leaf layer 2 FNAm, leaf layer n FNA a (1)=LMA(1)*FNAm (1) FNA a (2)=LMA(2)*FNAm (2) FNA a (n)=LMA(n)*FNAm (n) Leaf-area-based functional nitrogen availability (FNA a)= FNA m*Leaf mass per area (LMA) FNAa (1), leaf layer 1 FNAa(2), leaf layer 2 FNAa(2), leaf layer n
Leaf mass per area(g leaf/m2) 0 100 200 300 400 Leaf nitrogen content 0.01 0.03 0.05 Leaf nitrogen conte Leaf nitrogen content(g N/m2) 2.00 2.05 2.10 2.15 2.20 2.25 0.00 0.02 0.04 Leaf nitrogen conte Wright, I. J., P. B. Reich, et al. (2004). Nature 428(6985): 821-827. Assumption: Leaf mass per area (LMA) is always adjusted for optimal leaf-area-based nitrogen content
Page 1 and 2: Toward a mechanistic modeling of ni
Page 3 and 4: Farquhar Photosynthesis Model for C
Page 5 and 6: Vcmax25(umol CO2/m 0 10 20 30 40 En
Page 7 and 8: Leaf-mass-based functional nitrogen
Page 9 and 10: Nitrogen investment parameters Ntro
Page 11: Measured Vcmax (umol CO2/m2/ 0 50 1
Page 15 and 16: Optimal functional nitrogen availab
Page 17 and 18: Net photosynthesis rate(g biomass/m
Page 19 and 20: Summary & Next Step • A dynamic n
Page 21 and 22: Test case 2 [D ns=50; fs=0.5 ] Radi
Page 23 and 24: Leaf area index optimization Optima
Page 25 and 26: Jmax (umol O 2/m2/s) Irradiance eff
Page 27 and 28: Poplar (Populus tremula) Evaluation
Page 29: Fn = 2MFNCm/(FNCm+MFNCm) Dynamic ro

Chonggang Xu - CESM

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