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建築材料の予測と環境影響：木造と従来型建設経路の比較

Forecast of building materials and their related environmental impacts: comparing wood-based and conventional construction pathways (原題)

Camilla Marlene Ernst Andersen, Rasmus Nøddegaard Hansen, Endrit Hoxha, Harpa Björk Birgisdóttir

Journal of Industrial Ecology📚 査読済 / ジャーナル2026-08-18#エネルギー転換Origin: EU経営インパクト: コスト削減対象セクター: construction
DOI: 10.1007/s44498-026-00159-0
原典: https://doi.org/10.1007/s44498-026-00159-0

🤖 gxceed AI 要約

日本語

デンマークの建設部門を対象に、木造と従来型の2つの建設経路を2025年から2050年まで比較し、材料フローと排出量を予測。16のケースビルのLCAを用いて、木造が初期GHG排出と非再生可能資源の依存を削減することを示す。しかし、年間排出量はデンマークの割当炭素予算の49%（木造）と96%（従来型）を占め、システム変革の必要性を強調。

English

This study compares wood-based and conventional construction pathways in Denmark from 2025 to 2050, projecting material flows and emissions using LCA of 16 case buildings. Wood-based materials significantly reduce upfront GHG emissions and non-renewable resource use. However, annual emissions still consume 49% (wood) and 96% (conventional) of Denmark's allocated carbon budget, underscoring the need for systemic changes in the construction industry.

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

日本の建設部門はCO2排出量が多く、木造建築やカーボンニュートラル政策が進む中、本研究成果は日本の建設資材選択やLCA評価に示唆を与える。特に、SSBJや有報でのGHG開示が進む中、建設企業のScope 1・2排出削減戦略に有用。

In the global GX context

This study provides robust LCA-based evidence for the decarbonization potential of wood-based construction, relevant to global efforts under TCFD/ISSB and the EU's CSRD. It highlights the need for circular economy and reduced construction demand, offering insights for construction firms and policymakers aligning with net-zero targets.

👥 読者別の含意

🔬研究者:Provides a comprehensive LCA comparison of construction pathways, useful for building sector decarbonization research.

🏢実務担当者:Construction companies can use these findings to evaluate material choices and reduce carbon footprints in projects.

🏛政策担当者:Highlights the urgency of systemic changes in construction to meet carbon budgets, informing building codes and climate policies.

📄 Abstract（原文）

<title>Abstract</title> The building sector is a major contributor to global greenhouse gas emissions (GHGe), necessitating carbon mitigating strategies to reduce its environmental impact. This study investigates the environmental implications of two construction pathways in Denmark - wood-based and conventional - projecting material flows and emissions from 2025 to 2050. Using life cycle assessments (LCA) for 16 case buildings across multiple typologies, the study evaluates the potential for wood-based materials to reduce GHGe compared to conventional materials. The results highlight significant environmental benefits of wood-based pathways, particularly in reducing upfront GHGe and the reliance on non-renewable resources. However, the findings indicate that annual emissions account for 49% and 96% of Denmark’s allocated share of the global carbon budget for the wood-based and conventional pathways, respectively, underscoring the pressing need for systemic changes in the construction industry. Comprehensive strategies integrating biobased solutions, circular economy principles, and reduced reliance on new construction are critical to achieving Denmark’s climate goals.

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