对IPCC AR6报告建筑章节的介绍和解读

Interpretation of IPCC AR6 on buildings

IPCC于2022年4月正式发布了第六次评估报告(AR6)第三工作组(WGⅢ)报告《气候变化2022:减缓气候变化》,该报告以已发布的第一和第二工作组报告作为基础,评估了各领域减缓气候变化的进展。报告的第九章建筑章节系统全面地评估了全球建筑领域的温室气体排放现状、趋势和驱动因素,综述并评估了建筑减缓气候变化的措施、潜力、成本和政策。报告主要结论认为,全球建筑领域有可能在2050年实现温室气体净零排放,但如果政策措施执行不力,将有可能在建筑领域形成长达几十年的高碳锁定效应。报告的主要结论将成为全球建筑领域应对气候变化行动的重要参考,对于我国建筑领域实现碳达峰、碳中和目标也有非常重要的借鉴意义。

The IPCC officially released its Working Group Ⅲ report,“climate change 2022:mitigation of climate change”,in April 2022.This report builds on the published Working Group I,and Working Group II reports,to assess progress in global climate change mitigation work.Chapter 9 of Working GroupⅢreport,provides a systematic and comprehensive assessment of the current trends and drivers of global building sector,technical and non-technical measures to reduce emissions,and quantitative overviews of the potential and costs of global and regional mitigation measures.This report discusses the relationship between mitigation and adaptation measures,sustainable development,and key policy barriers and feasible measures.Global building emissions scenario analysis show that it is possible to achieve net-zero GHG emissions in building sector by 2050 if strong policies for sufficiency,efficiency,and renewable energy are adopted and effectively implemented,and all barriers to decarbonization are removed.If policies are not effectively implemented,there is the potential for decades of high carbon lock-in effect in buildings.There is significant potential for emissions reductions in all regions of the world,in both new and existing buildings.Adopting emission reduction measures in buildings also contributes to achieving the Sustainable Development Goals(SDGs)and using buildings to adapt to future climate change.The main findings of the report will be an important reference for global action on climate change in the building sector,and will be very important implications for China’s building sector to achieve its carbon peak and carbon neutral targets.