再生農業：政策立案にはより良いエビデンスが必要
Regenerative agriculture: we need better evidence to inform policy (原題)
Joshua P. Copping, Andrew Balmford, Richard B. Bradbury, Lynn V. Dicks, Rob Field, Ruth Wade, Tom Finch
🤖 gxceed AI 要約
日本語
再生農業（RA）は環境負荷低減と生産性維持の両立策として注目されるが、収量やGHG排出への効果のエビデンスはばらつきが大きい。本研究は英国の農地景観を模した土地利用シミュレーションで、収量応答の仮定次第でシステム全体の気候影響が大きく変わることを示した。収量減は土地利用変化による排出を招き、圃場単位の排出削減を上回り得る。RAの気候便益は圃場排出のみでは判断できず、生産性・土地利用変化・生産移転の不確実性を政策評価に明示的に組み込むべきと論じる。
English
Regenerative agriculture (RA) is promoted for cutting environmental impacts while maintaining productivity, but evidence on yields and GHG emissions is highly variable. Using a stylised UK arable land-use simulation, the authors show that system-level climate outcomes hinge on yield assumptions: yield losses raise land demand and land-use-change emissions that can outweigh field-scale savings, while maintained or higher yields free land for restoration and sequestration. They argue RA's climate impact cannot be inferred from field-scale emissions alone, and policy should explicitly treat productivity, land-use change, and displacement uncertainty.
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
日本では有報・統合報告書でのScope 3（特にカテゴリ1）や食品・農業分野の気候目標設定が進む中、再生農業の導入効果を圃場単位の排出削減だけで評価するリスクを示す。SSBJ開示やSBTiのFLAG目標を検討する食品・商社・農業関連企業にとって、土地利用変化や生産移転を考慮した評価枠組みの必要性を裏付ける。
In the global GX context
As ISSB/CSRD and SBTi FLAG guidance push food and agriculture companies to disclose land-related emissions, this paper warns that field-scale accounting alone can misstate climate benefits. It supports global moves toward system-boundary and land-use-change accounting in corporate climate targets and agricultural transition policy.
👥 読者別の含意
🔬研究者:圃場排出と土地利用変化・生産移転を統合したシステム境界の評価手法が必要であることを示す。
🏢実務担当者:再生農業の調達・Scope 3目標を設定する際、収量前提と土地利用変化の不確実性を開示・感度分析に含めるべき。
🏛政策担当者:農業気候政策の便益評価では、収量応答・土地利用変化・生産移転の不確実性を明示的に扱う必要がある。
📄 Abstract（原文）
Regenerative agriculture (RA) is increasingly promoted as a means of reducing the environmental impacts of food production while maintaining agricultural productivity. However, evidence for its effects on crop yields and greenhouse gas (GHG) emissions remains highly variable, creating uncertainty about its overall climate benefits. We argue that evaluating RA requires a system-wide perspective that considers productivity, land-use change, and production displacement alongside field-scale emissions. To illustrate this, we developed a stylised land-use simulation representing a UK arable landscape and explored a range of plausible yield and production-emission outcomes reported for RA and its constituent practices. Production shortfalls were met through conventional domestic and international production under alternative intensification and extensification pathways, while yield gains released land for habitat restoration. The analysis shows that system-level climate outcomes are highly sensitive to assumptions about yield response. Yield reductions increased land demand and, where additional production required agricultural expansion, emissions from land-use change frequently outweighed reductions in production emissions. Conversely, maintaining or increasing yields reduced land requirements and created opportunities for habitat restoration and carbon sequestration. Although illustrative rather than predictive, our analysis demonstrates that the climate impact of RA cannot be inferred from field-scale emissions alone. Assessments and policy should explicitly consider uncertainty in productivity, land-use change, and displacement effects when evaluating the climate mitigation potential of regenerative agriculture.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1088/1748-9326/aeac6cfirst seen 2026-10-13 04:35:21
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