Assessing the net climate benefits of improved grazing intensity in global rangelands
世界の牧草地における放牧強度改善の正味の気候便益評価 (AI 翻訳)
Robert S. Powell, Steven J. Davis, David Encarnation, Johannes Piipponen, Jinfeng Chang, Courtney M. Currier, Karl‐Heinz Erb, Samuel Eze, Chaopeng Hong, Pierre Ploton, Shuai Ren, Pete Smith, Jishuai Su, Giuseppe Tempio, César Terrer, Dominik Wisser, Fengwei Xu, Adam F. A. Pellegrini
🤖 gxceed AI 要約
日本語
世界の牧草地で放牧強度を改善すると、土壌と植生にCO2を年間22億トン（CO2換算）固定できるが、家畜生産を維持するための補助飼料給与により正味の緩和効果が2〜31%減少する。システム全体の排出影響を無視すると気候便益を過大評価する可能性がある。
English
Improving grazing intensity in global rangelands can sequester 2.2 GtCO2eq/yr, but maintaining livestock production via supplemental feeding reduces net mitigation by 2-31%, highlighting the need for systems-level assessment.
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
日本の畜産業は飼料の多くを輸入に依存しており、牧草地管理の改善は国内のカーボンフットプリント削減や国際的な食料供給網における排出削減に示唆を与える。また、日本は陸域生態系の吸収源を気候目標に計上しており、本知見は適切な計上方法の検討に役立つ。
In the global GX context
This global study underscores that land-based mitigation must account for full system effects (e.g., feed shifts) to avoid overestimation—critical for international carbon accounting frameworks like the IPCC Guidelines and national GHG inventories.
👥 読者別の含意
🔬研究者:Provides a systems-level model for assessing net mitigation from grazing management, applicable to other land-use interventions.
🏢実務担当者:Livestock and land managers can use these findings to balance carbon sequestration with production and supply-chain emissions.
🏛政策担当者:Informs national climate strategies that include rangeland management, highlighting the risk of overcounting net benefits without considering feed replacement.
📄 Abstract（原文）
Improved rangeland grazing could mitigate climate change through carbon dioxide (CO 2 ) sequestration in soils and vegetation. However, altering grazing practices to increase ecosystem carbon storage may also decrease livestock production and/or increase greenhouse gas emissions through the supply chain, such that the net emissions impacts remain unclear. Here, we assess the global net mitigation potential of improving grazing intensity by quantifying potential CO 2 sequestration alongside systems-level impacts of plant productivity changes, livestock emissions, feed requirements, and production constraints. Improving grazing intensity in global rangelands could sequester 2.2 ± 0.43 gigatons of carbon dioxide equivalent (Gt/CO 2 eq) per year in the near term, but maintaining livestock production through supplemental feeding would reduce net mitigation by 2 to 31% (to 1.8 ± 0.45 GT/CO 2 eq per year). Our results suggest that neglecting systems-level emissions impacts may substantially overestimate the global climate benefits of improved grazing.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1126/science.adz4320first seen 2026-06-13 05:03:13
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