C D r = Y L r , t = 1 K A G r , t = 1 C D A L F r , s = 1 ∗ L A B S r , s = 1 , t = 1 ( 1 − C D A L F r , s = 1 ) {\displaystyle CD_{r}={\frac {YL_{r,t=1}}{{KAG_{r,t=1}^{CDALF_{r,s=1}}}*{LABS_{r,s=1,t=1}^{(1-CDALF_{r,s=1})}}}}} BLOOP C O 2 F e r t t + 1 = e n v c o 2 f e r t ∗ C O 2 P P M − C O 2 P P M t = 1990 C O 2 P P M t = 1990 {\displaystyle CO2Fert_{t+1}=\mathbf {envco2fert} *{\frac {CO2PPM-CO2PPM_{t=1990}}{CO2PPM_{t=1990}}}}