Timber as a low-carbon material strategy: A systematic review of substitution effects and mitigation potential in building systems
低炭素材料戦略としての木材：建築システムにおける代替効果と緩和可能性の系統的レビュー (AI 翻訳)
Şerban Chivulescu, Gheorghe Raul Radu, Diana Pitar, Ștefan Leca, Alexandru Claudiu Dobre, Ovidiu Badea
🤖 gxceed AI 要約
日本語
本レビューは30年間の全球研究を系統的に統合し、建築分野での木材代替による炭素削減効果を定量化しました。鉄筋代替で2.3kg CO2/kg、コンクリート代替で1.4kg CO2/kgの排出回避が確認され、建物全体では木材1m³あたり36～530kg CO2-eqの削減が可能です。持続可能な木材利用はセクター排出量を2050年までに20～30%削減できると推定されます。
English
This systematic review synthesizes three decades of global research to quantify timber substitution effects in buildings. It finds that replacing steel avoids 2.3 kg CO2 per kg of wood, and replacing concrete saves 1.4 kg CO2/kg. Whole-building emission reductions range from 36 to 530 kg CO2-eq per m³ of wood. Scaling timber use could cut sector emissions by 20–30% by 2050.
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
日本では建築物の炭素排出削減が急務であり、木材利用の推進はグリーン成長戦略の一環です。本レビューは代替効果を定量化し、日本の建築基準法やカーボンプライシング政策に示唆を与えます。
In the global GX context
Globally, the building sector is a key decarbonization target. This review consolidates displacement factors and barriers, informing ISSB-aligned disclosure of embodied carbon and policy interventions like carbon pricing.
👥 読者別の含意
🔬研究者:This meta-analysis provides consolidated displacement factors for LCA practitioners and researchers quantifying substitution effects.
🏢実務担当者:Construction firms can use the emission reduction ranges to estimate the climate benefits of timber substitution in building projects.
🏛政策担当者:Policymakers can leverage the quantified mitigation potential to revise building codes, promote carbon pricing, and support sustainable forestry.
📄 Abstract（原文）
The building sector is a major contributor to global greenhouse gas emissions. Substituting carbon-intensive materials with timber presents a significant, yet not fully quantified, climate mitigation opportunity.This systematic review synthesizes three decades of global research to quantify the timber substitution effect in the built environment. Its primary objectives are to: (1) consolidate displacement factors and emission reduction ranges from life-cycle assessments, (2) evaluate systemic barriers and enablers for adoption, and (3) provide actionable insights for policy and research.A structured literature search (1990–2024) was performed using Web of Science and Google Scholar. From 12,526 initial records, 12,320 unique studies were screened. Following a full-text review, 80 studies were included in the qualitative synthesis, with 68 providing quantitative data for meta-analysis. A mixed-methods framework combined bibliometric and thematic synthesis.The analysis confirms a robust substitution effect. Replacing steel with wood avoids 2.3 kg of CO₂ per kg of wood, while substituting concrete saves 1.4 kg CO₂/kg. In whole-building systems, emission reductions range from 36 to 530 kg CO₂-equivalents per m³ of wood. When sourced sustainably, timber serves as a long-term carbon store, with life-cycle assessments showing 34–84% lower climate impact in multi-story applications. Scaling timber use could reduce sector emissions by 20–30% by 2050. Key barriers include prescriptive building codes, fire safety perceptions, and uneven forest governance.Timber substitution is a viable, scalable mitigation pathway. Realizing its potential requires updated building codes, carbon pricing mechanisms, and certified sustainable forestry. Future research must standardize life-cycle assessment methods and address geographic literature gaps. This transition can simultaneously advance climate goals, circular economy principles, and green job creation.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.15287/afr.2026.4342first seen 2026-05-05 19:31:57
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。