Equity-centered dietary transitions: food-related GHG emissions and climate target alignment
公平性重視の食生活転換：食料由来GHG排出と気候目標の整合性 (AI 翻訳)
Yaling Li, Fujin Yi, Xiaoxi Wang
🤖 gxceed AI 要約
日本語
本研究は181カ国を対象に、公平性を重視した3つの食生活転換シナリオ（現状維持、低排出代替、高排出代替）を評価し、食料由来排出量とパリ協定目標との整合性を分析。低排出代替シナリオでは2℃目標に整合するが、1.5℃目標は食生活転換のみでは達成不可能であり、部門横断的な排出削減の必要性を強調。
English
This study evaluates three equity-centered dietary transition scenarios across 181 countries, quantifying food-related emissions and alignment with Paris targets. The low-emission substitution scenario achieves 37% reduction, compatible with 2°C, but 1.5°C remains unattainable without cross-sectoral decarbonization.
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、食品産業のサプライチェーン排出削減や国別の排出枠配分の議論に示唆を与える。また、SSBJ開示におけるScope 3排出量の算定・削減計画に、食料システムの公平性を考慮したアプローチを組み込む参考になり得る。
In the global GX context
Globally, this research informs climate policy on food systems, highlighting the need for equity-based allocation of mitigation obligations. It complements ISSB/CSRD disclosure frameworks by providing a quantitative basis for setting science-based targets in the food sector.
👥 読者別の含意
🔬研究者:Provides a novel equity-centered framework for allocating dietary transition mitigation obligations across countries.
🏢実務担当者:Offers insights for food companies on aligning product portfolios with low-emission dietary patterns and anticipating regulatory shifts.
🏛政策担当者:Highlights the necessity of integrating dietary shifts with cross-sectoral decarbonization to meet climate targets.
📄 Abstract（原文）
Abstract Global dietary transitions confront the dual challenge of reconciling nutrition equity with environmental sustainability. This study evaluates three equity-centered dietary transitions scenarios grounded in country-specific dietary recommendations across 181 countries: CP (current patterns), LP (low-emission substitutions, e.g., poultry replacing ruminants), and HP (high-emission alternatives), to quantify emission dynamics and assess alignment with Paris Agreement temperature targets. Business-as-usual trends (BAU) result in cumulative food-related emissions of 1768 Gt CO₂e between 2020 and 2100. While CP reduces this to 1411 Gt CO₂e, achieving only marginal alignment with the 2 °C limit, LP achieves a 37% reduction to 1113 GtCO₂e, ensuring robust compatibility with the 2 °C target. In contrast, HP emissions surpass even BAU levels. Central to the LP pathway, we propose an equity-centered allocation framework that differentiates mitigation obligations and emission allowances based on deviations from national dietary guidelines. Countries with excessive intakes, particularly of animal-source foods, are thus assigned stringent obligations (e.g., USA: 58.85 Gt CO₂e; China: 131.10 Gt CO₂e). Conversely, those with inadequate nutritional intake are allocated safeguarded allowances (e.g., Nigeria: 25.63 Gt CO₂e; Ethiopia: 24.94 Gt CO₂e), scaled to population size to uphold nutritional rights. However, even under this optimized pathway, the residual emission budget for non-food sectors is constrained to a narrow range of 407–818 Gt CO₂e. This severe constraint renders the 1.5 °C target unattainable through dietary shifts alone, underscoring the imperative for coordinated cross-sectoral decarbonization integrated with equity-centered policies.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1088/1748-9326/ae9563first seen 2026-08-08 05:08:52
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