气候变化是全人类共同面临的严峻挑战，对全球能源、技术、生态环境以及人类健康福祉都构成重大威胁。为实现《巴黎协定》目标，G20成员都已提交或更新了各自的国家自主贡献，明确了碳中和目标，多数G20成员还提高了2030年温室气体减排目标，颁布或修订了应对气候变化、促进清洁能源发展的专项法律或政策，扩大了清洁能源发展空间。2022年2月以来，俄乌冲突局势逐步升级与全球疫情反复，对全球能源供应链产生重大影响，迫使各国重新考虑能源安全和清洁能源政策。因此，研究G20碳中和目标及政策，特别是G20推进清洁能源发展的趋势及影响，对我国参与全球气候谈判议程和国际规则制定，构建公平合理、合作共赢的全球气候治理体系，应对气候危机和绿色壁垒所带来的影响，推进绿色“一带一路”建设具有重要现实意义。
Climate change is a severe challenge faced by all mankind，posing a major threat to global energy，technology，ecological environment and human health and well-being. To achieve the goals of the Paris Agreement，all G20 members have submitted or updated their Nationally Determined Contributions （NDCs），clarified carbon neutrality targets，and most G20 members have also raised their 2030 greenhouse gas emission reduction targets，promulgated or revised their special laws or policies to deal with climate change and clean energy development，so that it will expand the space for clean energy development. Since February 2022，the gradual escalation of the conflict between Russia and Ukraine and the ups and downs of the global epidemic have had an important impact on the global energy supply chain，forcing countries to rethink energy security and clean energy policies. Therefore，it is of great practical significance to study the G20 carbon neutrality goals and policies，especially the development trend and impact of clean energy，to participate in the global climate negotiation agenda and the formulation of international rules，and build a fair，reasonable，cooperative and win-win global climate governance system，cope with the climate crisis and green barriers，and promote the construction of a green “Belt and Road”.
