Upstream-Downstream Joint Carbon Reduction Strategies Based on Low-Carbon Promotion

. 2018 Jun 27;15(7):1351. doi: 10.3390/ijerph15071351

(1)	$\frac{\partial p^{M }}{\partial t} > 0, \frac{\partial E_{R}^{M }}{\partial t} > 0, \frac{\partial w^{M }}{\partial t} > 0, \frac{\partial q^{M }}{\partial t} > 0;$
(2)	$w h e n γ > \frac{φ_{M} - 2 δ C_{M} A}{C_{M} A}, \frac{\partial E_{M}^{M }}{\partial t} > 0; w h e n γ < \frac{φ_{M} - 2 δ C_{M} A}{C_{M} A}, \frac{\partial E_{M}^{M }}{\partial t} < 0;$
(3)	$\frac{\partial τ^{M}}{\partial t} > 0 .$