Carbon storage potential of wood and biochar in global urban building scenarios
世界的な都市建築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
本研究は、世界の都市建築ストックにおける炭素貯留を将来シナリオ下で評価。構造用木材を新築の50%に導入することで、2050年に炭素貯留が0.4 GtCO2/年増加（+173%）、累積排出量を最大46%削減可能と示す。バイオ炭コンクリートの効果は限定的で、需要増加には木材で1.75倍、バイオ炭で25倍以上の供給拡大が必要。
English
This study assesses carbon storage in global urban building stocks under future scenarios, focusing on structural wood and biochar-based concrete. Substituting with wood in 50% of new buildings could increase carbon storage by 0.4 GtCO2/yr by 2050 and reduce cumulative emissions by up to 46%. Biochar yields only 12% storage increase and 2% emission reduction. Combining with circular strategies boosts mitigation but requires large supply expansion.
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
日本のカーボンニュートラル目標達成には建築分野の脱炭素が不可欠。本結果は、木材利用による炭素貯留の定量的ポテンシャルと限界を示し、SSBJや有報での環境情報開示において、スコープ3排出量削減のエビデンスとして活用できる。
In the global GX context
This study provides critical evidence for the potential and limits of bio-based carbon storage in urban buildings, relevant to ISSB/TCFD climate disclosures and transition finance. It highlights that wood substitution offers significant mitigation, but supply constraints and regional differences must be addressed in global carbon accounting standards.
👥 読者別の含意
🔬研究者:Researchers can adopt the scenario modeling framework combining material substitution with circular strategies for further analysis.
🏢実務担当者:Construction firms can use the storage potentials and substitution rates to inform low-carbon material procurement and design.
🏛政策担当者:Policymakers should consider mandating wood use in new buildings and investing in sustainable wood supply chains to realize carbon storage 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.19384477first seen 2026-05-17 06:55:47
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。