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文章针对气候变化经济学的研究目标、基本概念、主要内容和研究方法,提出了全面的分析和评价,并根据经济学的分析结果对排放指标、政策工具和全球行动提出了建议。文章认为,气候变化经济学首先应该关注二氧化碳的存量及其相关的风险和不确定性,将可控的二氧化碳浓度稳定在550ppm CO2e(二氧化碳当量)的水平,相关的减排成本达到世界GDP的1%,而实现削减所需要的碳价格约等于或大于每吨二氧化碳30美元。此外,在确定气候变化的损失值时,应从合适的价格机制入手,用形式化建模来补充其不足,并考虑适度的贴现率和伦理问题。
This paper presents a comprehensive analysis and evaluation of the research objectives, basic concepts, main contents and research methods of climate change economics, and puts forward suggestions on emission targets, policy tools and global actions based on the results of economic analysis. The article argues that economics of climate change should first of all focus on the stock of carbon dioxide and its associated risks and uncertainties, stabilize the controllable carbon dioxide concentration at a level of 550ppm CO2e (carbon dioxide equivalent) and the associated emission reduction costs to 1 %, While the price of carbon required to achieve the reduction is about $ 30 or more per tonne of carbon dioxide. In addition, determining the value of the loss of climate change should start with an appropriate price mechanism, supplement it with formal modeling, and consider appropriate discount rates and ethical issues.