Carbon storage potential of wood and biochar in global urban building scenarios
世界の都市建物シナリオにおける木材とバイオ炭の炭素貯蔵可能性 (AI 翻訳)
Alessio Mastrucci, Dominik Maierhofer, X. Zhong, Nicolas Alaux, Felix Creutzig, Florian Maczek, Merle Quade, Martin Röck, Di Sheng, Matthew Gidden, van Ruijven, Bas
🤖 gxceed AI 要約
日本語
世界的な都市化による建築物の増加に伴い、木材とバイオ炭を活用した炭素貯蔵の可能性を評価。構造用木材を新築の50%に使用すると、2050年までの炭素貯蔵量がベースライン比173%増加する一方、バイオ炭コンクリートの効果は限定的であった。材料代替と循環戦略の組み合わせが最大の削減効果をもたらす。
English
This study assesses carbon storage potential of structural wood and biochar in global urban buildings. Substituting 50% of new buildings with wood could increase carbon storage by 173% by 2050, while biochar concrete offers only 12% improvement. Combining material substitution with circular strategies yields up to 57% reduction in cumulative embodied emissions.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の建設業界では、木造建築推進やカーボンニュートラル実現に向けた取り組みが進んでおり、本研究成果は、日本におけるバイオベース素材の活用可能性を定量的に示す参考となる。特に、アジア・アフリカの都市化地域での影響が大きい点は、日本の国際協力の観点からも注目に値する。
In the global GX context
This paper provides a comprehensive global assessment of bio-based carbon storage in urban buildings, a critical lever for climate mitigation. It highlights the significant potential of structural wood, especially in rapidly urbanizing regions, and underscores the need for supply chain expansion and circular economy integration.
👥 読者別の含意
🔬研究者:Provides a scenario-based framework for assessing carbon storage in construction materials, with detailed regional and strategy comparisons.
🏢実務担当者:Quantifies the mitigation potential of wood and biochar in buildings, informing material procurement and design decisions for sustainability teams.
🏛政策担当者:Demonstrates the importance of coupling material substitution with sufficiency and circular policies to maximize climate benefits.
📄 Abstract（原文）
Urbanization is accelerating globally, increasing material demand and associated greenhouse gas emissions. Bio-based construction materials can enable long-term carbon storage in buildings, yet their mitigation potential, interaction with circular strategies, and feasibility remain uncertain. Here, we assess carbon storage in global urban building stocks under future scenarios, focusing on two material strategies, structural wood and biochar-based concrete, while accounting for associated emission outcomes and feasibility considerations. We find that substituting conventional construction systems with structural wood in 50% of new urban buildings could increase carbon storage by 0.4 GtCO₂ yr⁻¹ (+173%) by 2050 relative to a current-practice baseline, with the largest contributions in rapidly urbanizing regions of Asia and Africa. In contrast, large-scale adoption of biochar-based concrete yields only a 12% increase in carbon storage by 2050, constrained by limited feasible substitution rates in cement. Over 2020–2100, structural wood substitution could reduce cumulative embodied emissions from urban construction by up to 46%, compared to only 2% for biochar-based concrete. Combining material substitutions with sufficiency and circular strategies that reduce overall material demand delivers the greatest mitigation potential, lowering cumulative net embodied emissions by up to 57% for wood and 38% for biochar. However, achieving the full carbon storage potentials requires significant supply expansion, up to a factor 1.75 for wood and more than twenty-five-fold for biochar compared without circular strategies. These findings clarify the potential, limits, and feasibility of bio-based carbon storage in urban buildings worldwide.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.5281/zenodo.19384476first seen 2026-05-17 06:55:25
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