Abstract:

The issue of global warming has aroused widespread concern all over the world. Governments and companies around the world are actively working hard to achieve low-carbon emission reduction. However， the company must invest in energy conservation and emission reduction for green production， which occupies the company's funds for production activities， resulting in low enthusiasm for carbon emission reduction.To this end， the government has introduced a variety of preferential policies to increase the enthusiasm of enterprises to carry out carbon emission reduction activities.Considering consumers’ low-carbon preference and government subsidy policies， in the context of the coexistence of old-for-new and old-for-remanufacturing in the closed-loop supply chain， a single monopolistic manufacturer has constructed a two-stage differential pricing decision model.The effects of two government subsidies and consumer low-carbon preferences on manufacturer's emission reduction decisions， closed-loop supply chain performance and environmental benefits are analyzed， and the results of the study are simulated with numerical values.The results show that：Government subsidies help reduce the conditions for manufacturer to initiate emission reductions， and the worse the emission reduction properties of re-products， the higher the manufacturer’s enthusiasm for low-carbon emission reduction. Carbon emission reduction subsidy make the positive impact of consumers' low-carbon preferences on the environmental benefits of the supply chain more significant， while “trade-in” subsidy are more conducive for manufacturers to use consumers' low-carbon preferences to benefit from emission reduction and remanufacturing.The government implements carbon emission reduction subsidy for the manufacturer with higher levels of carbon emission reduction， and implements “trade-in” subsidy for the manufacturer with low levels of carbon emission reduction， which is conducive to the realization of efficient carbon emission supervision. When the government unit subsidy is low， the “trade-in” subsidy increases the manufacturer's investment in carbon emission reduction； when the government unit subsidy is high， the carbon emission subsidy makes the manufacturer's investment in carbon emission reduction higher.

Key words: old-for-new, old-for-remanufacturing, consumers' low-carbon preference, government subsidies