Bringing greenhouse gas removal down to earth: Stakeholder supply chain appraisals reveal complex challenges
Bringing greenhouse gas removal down to earth: Stakeholder supply chain appraisals reveal complex challenges
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DOI：
10.1016/j.gloenvcha.2021.102369
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发表时间：
2021-11
期刊：
影响因子：
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通讯作者：
D. Clery;N. Vaughan;J. Forster;I. Lorenzoni;C. Gough;J. Chilvers
中科院分区：
文献类型：
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作者：
D. Clery;N. Vaughan;J. Forster;I. Lorenzoni;C. Gough;J. Chilvers
在一些预测中，温室气体清除（GGR）方法被认为是实现《巴黎协定》气候减缓目标的关键。碳捕集与封存（BECCS）和植树造林广泛包含在缓解方案中，但人们对这些方法的可行性表示担忧。来自行业、非政府组织 (NGO) 和政策的利益相关者参与了访谈和为期一天的参与式研讨会，对此进行了探讨。多标准绘图 (MCM) 方法用于在英国背景下细粒度评估四个特定温室气体清除供应链的“现实”可行性。 MCM 分析表明，在商业模式、社会可接受性和环境可持续性等标准方面，与三个 BECCS 供应链相比，造林表现更好。 MCM 方法的这种创新应用使得能够通过供应链分析在更细粒度的层面上探索综合评估模型中 GGR 的抽象表示，从而更深入地了解这些方法面临的问题。收集的数据允许系统地应用广泛的技术、环境、社会和政治标准来评估未来造林和 BECCS 不同实施方案的实际绩效。如果这些 GGR 供应链要成为全球变暖 1.5°C 所需规模的现实，全球合作、土地供应以及政策和激励措施的长期性等因素将成为重大挑战。
Greenhouse gas removal (GGR) approaches are considered essential in several projections to meet the climate mitigation ambition of the Paris Agreement. Biomass Energy with Carbon Capture and Storage (BECCS) and afforestation are included extensively in mitigation scenarios but there are concerns about the feasibility of these approaches. This was explored with stakeholders from industry, non-governmental organisations (NGOs) and policy who were involved in interviews and a one-day participatory workshop. Multicriteria mapping (MCM) methodology was used to appraise the ‘real-world’ feasibility of four specific greenhouse gas removal supply chains at a granular level in the UK context. The MCM analysis shows that afforestation performs better in comparison to three BECCS supply chains, on criteria such as business model, social acceptability, and environmental sustainability. This innovative application of the MCM methodology enables the abstract representations of GGR in integrated assessment models to be explored at a more granular level through a supply chain analysis and thus gain a deeper understanding of the issues facing these approaches. The data gathered allows a wide range of technical, environmental, social and political criteria to be systematically applied in appraising the practical performance of different future implementation options for afforestation and BECCS. If these GGR supply chains are to become a reality on the scale required for 1.5 °C global warming, factors such as global cooperation, land availability, and the longevity of policies and incentives were found to be major challenges.