Abstract: By building mathematical models, This paper studies the influence of abatement R&D subsidy to emissions reductions, emissions trading market, the enterprise profit and social welfare under the condition of emissions trading, and further analyzes the relevant supporting policies. The result shows that: abatement R&D subsidy can adjust the emission trading market effectively. Under the condition of emissions trading, abatement R&D subsidy has a good emission reduction effect, and can improve the level of corporate profit and social welfare. Finally, we find that pollution tax is the optimal policy for abatement R&D subsidy, choose the appropriate pollution tax will improve the level of emission reduction, firm profit and social welfare , which can realize the sustainable development of economy.

摘要： 通过两阶段博弈模型构建，文章研究了排污权交易条件下的最优减排研发补贴政策，分析了减排研发补贴政策对污染物减排、企业利润及社会福利的影响，并进一步利用数值模拟方法讨论了减排研发补贴与排污税政策搭配使用的效果。结论表明：首先，当排污权的市场交易价格小于某一阈值时，政府应对企业的减排研发进行适当补贴；当交易价格等于或超过该阈值时，政府不提供补贴或对企业的减排研发进行征税。其次，排污权交易条件下，减排研发补贴政策具有较好的减排效果，并且能够提高企业的利润和社会福利水平。最后，政府选择合适的排污税与研发补贴搭配使用不仅能激活排污权交易市场，还能使得研发补贴政策的利润和社会福利效果最优，从而实现经济和环境的协调发展。