食料排出税は限定的な漏洩で健康・環境便益をもたらし得る
Food emissions taxes can deliver health and environmental benefits with limited leakage (原題)
Clara G. Bouyssou, Marco Springmann, Francesco Clora, Jørgen Dejgård Jensen, Wusheng Yu
🤖 gxceed AI 要約
日本語
本論文は、食料消費ベースのGHG課税がもたらす製品間代替・国間再配分と、その緩和・健康効果を分析する。炭素の社会的費用（SCC）、税の国際普及、国内税収の再循環（果物・野菜補助）でシナリオを変化させた。一律SCCは最大の緩和効果を持つが一部で健康を損ない、共通だが差異ある責任を反映したSCCは緩和を下げるが健康悪化を和らげる。補助金は健康を改善するが緩和を下げる。購買力が大きく損なわれなければ、野心的なGHG課税は緩和と健康の両立に有効と結論づける。
English
This study models food-consumption-based GHG taxes, examining cross-product substitution, cross-country reallocation, and mitigation and health effects. Scenarios vary by social cost of carbon (SCC), international tax diffusion, and revenue recycling via fruit and vegetable subsidies. A uniform-SCC approach maximizes global mitigation but can harm health in some countries; common-but-differentiated-responsibility SCC lowers mitigation but reduces negative health effects, while subsidies improve health but lower mitigation. Ambitious GHG taxes can improve both mitigation and health if purchasing power is not substantially reduced, with low leakage risk.
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
日本では食料自給率や農業政策との整合が論点となる。炭素価格の設計と税収再循環は、今後のカーボンプライシング議論やSSBJ開示下でのフードセクターの移行戦略に示唆を与える。
In the global GX context
Amid global carbon pricing debates and CBAM-style border measures, this paper quantifies leakage risk and health co-benefits of food GHG taxes—directly relevant to ISSB/CSRD disclosure of transition plans and to policy design balancing mitigation with distributional and health outcomes.
👥 読者別の含意
🔬研究者:食料システムの炭素課税設計と漏洩・健康影響の定量モデルを提供し、SCCと税収再循環のトレードオフを評価する枠組みを示す。
🏢実務担当者:食品・農業関連企業は、炭素価格導入時のコスト・調達・消費者需要変化を想定した移行計画と開示準備に活用できる。
🏛政策担当者:食料GHG課税の設計において、SCCの選択、国際普及、税収再循環が緩和・健康・漏洩に与える影響を考慮すべき根拠を提供する。
📄 Abstract（原文）
Exploring various designs of greenhouse gas (GHG) taxation in food systems is crucial for understanding possible global implications. Here we investigate cross-product substitution and cross-country reallocations derived from food-consumption-based GHG taxes, together with their mitigation and health effects. We vary the tax scenarios according to the social cost of carbon (SCC) used to calculate the country-specific tax rate, the international diffusion of the tax, and the use of within-country tax revenue recycling to subsidize fruit and vegetables. We find that, despite minor leakage risks, a uniform-SCC approach offers the highest global mitigation potential but could harm health in some countries. SCC scenarios reflecting common but differentiated responsibility lower mitigation but lessen the negative health effects, and subsidies can improve health but lower mitigation. Our findings support an ambitious GHG tax for improving mitigation and health, provided it does not substantially reduce purchasing power. Consumer preferences continue to favour emission-intense foods such as meat and dairy. A scenario analysis explores the social cost of carbon taxation design for balancing emissions and health outcomes, with low leakage risk.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1038/s43016-026-01429-7first seen 2026-09-25 04:34:31
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