Abstract：
Life expectancy can reflect both health benefit and implementation cost of climate policy. Nevertheless, little research has quantified the relation between life expectancy and climate policy in literature. In this paper, we attempt to narrow the research gap by studying how life expectancy is related to the Chinese nationwide emission trading scheme (CNETS). To achieve this research target, a Computable General Equilibrium (CGE) model is employed to simulate the operation of the economic system and the policy shock from emission abatement. The CGE model results show that life expectancy is prolonged by GDP but shortened by emissions, and the GDP impact on life expectancy is larger than the emission impact. Climate policy has dual effects on life expectancy because it relieves both negative emission impacts and positive GDP impacts on lifespan; its net effect on life expectancy is positive. Life expectancy positively impacts GDP, and this impact is moderated by climate policy; specifically, climate policy reinforces the positive impact of life expectancy on GDP. Life expectancy minimally affects carbon emissions during climate policy implementation; in other words, it has minimal impacts on emission abatement. These findings imply that climate policy and life expectancy complement each other; the government could implement climate policy to increase lifespan or prolong life expectancy to facilitate policy implementation.
摘要：
预期寿命可以反映气候政策的健康益处和实施成本。然而，文献中很少有研究量化预期寿命与气候政策之间的关系。在本文中,我们试图通过研究预期寿命与中国全国排放交易计划（CNETS）的关系来缩小研究差距。为了实现这一研究目标,采用可计算一般均衡（CGE）模型来模拟经济系统的运行和减排的政策冲击。CGE模型结果表明，预期寿命因GDP而延长，但因排放而缩短，GDP对预期寿命的影响大于排放影响。气候政策对预期寿命有双重影响，因为它既减轻了排放的负面影响，也减轻了GDP对寿命的积极影响；它对预期寿命的净影响是积极的。预期寿命对GDP有积极影响，这种影响受到气候政策的缓和；具体地说，气候政策加强了预期寿命对GDP的积极影响。在气候政策实施期间，预期寿命对碳排放的影响最小；换句话说，它对减排的影响最小。这些发现意味着气候政策和预期寿命是相辅相成的；政府可以实施气候政策来延长寿命或延长预期寿命，以促进政策实施。
