不耕起栽培が土壌炭素を高め温室効果ガスを削減しつつ作物収量を維持する世界的可能性
Global Potential of No-Tillage in Enhancing Soil Carbon and Reducing Greenhouse Gas Emissions While Sustaining Crop Yields (原題)
Chuanxu Fang, Xiaorong Wei, Wim DE VRIES, Gerard H. Ros, Josep Peñuelas, Peter B. Reich, Weibo Kong, Han Zhang, Haiqiang Li, Xiaoxu Jia, Jun Sun, Wei Li, Mingan Shao, Gehong Wei, Liping Qiu
🤖 gxceed AI 要約
日本語
1,371研究・8,303組の比較観測のメタ分析とランダムフォレストを組み合わせ、不耕起栽培(NT)の全球効果を評価した。NTは表層0–30cmの土壌有機炭素を11.0%増やし、GHG排出を13.5%削減しつつ、収量への有意な影響はなかった。乾燥気候・粗粒土壌で効果が強く、全球農地の44%が最適地と推定され、そこでの導入は主要作物収量+4.8%、炭素+15.2%、排出−6.4%をもたらす。
English
A global meta-analysis of 8,303 paired observations from 1,371 studies combined with a random forest model assessed no-tillage (NT) effects. NT raised 0–30 cm soil organic carbon by 11.0% and cut GHG emissions by 13.5% with no significant yield penalty. Benefits are strongest in drier climates and coarse soils; 44% of global croplands are optimal, where adoption would lift yields 4.8%, SOC 15.2%, and cut emissions 6.4%.
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
農業由来のScope 3・土壌炭素クレジットやSBTiのFLAG目標を検討する日本企業・農政にとって、地域別の導入効果の根拠を提供する。食料安全保障と脱炭素の両立を図る国内農業政策の参考になる。
In the global GX context
Provides region-specific evidence for soil-carbon accounting and SBTi FLAG target setting, relevant to agri-food Scope 3 and carbon-removal markets under emerging disclosure regimes. Supports climate-smart agriculture guidance in ISSB/CSRD supply-chain reporting.
👥 読者別の含意
🔬研究者:メタ分析と機械学習を組み合わせた全球スケールの農業炭素・GHG評価手法の実例として参照できる。
🏢実務担当者:農業サプライチェーンを持つ企業がFLAG目標や土壌炭素イニシアチブの地域優先度を判断する材料になる。
🏛政策担当者:不耕起栽培をGood Agricultural Practiceに組み込む際の地域別根拠と期待効果を提示する。
📄 Abstract（原文）
Abstract Pursuing the balance between environmental sustainability and agricultural productivity remains a critical challenge for achieving global sustainable development goals. No-tillage (NT), as a key measure of sustainable conservation and climate-smart agriculture, offers a promising approach to addressing this challenge. However, its comprehensive effects on soil carbon accumulation, greenhouse gas emissions, and crop yields remain unquantified at the global scale, limiting our ability to optimize both environmental and agronomic outcomes. Here, we conducted such a global synthesis by combining a meta-analysis of 8,303 paired observations from 1,371 studies with a random forest model to assess the influence of site conditions and management on NT effects. Our meta-analysis demonstrates integrated benefits of NT in enhancing soil organic carbon (SOC) stocks in 0–30 cm layer by 11.0% and mitigating greenhouse gas (the sum of CO2, CH4, and N2O in CO2-equivalent) emissions by 13.5%, without a significant impact on crop yields (−0.6% ± 1.5%). The integrated benefits are stronger in drier climates and coarser-textured soils, and they exhibit significant time-dependent patterns. Our prediction identifies 44% of global croplands as being optimal for NT’s integrated benefits, mainly in Africa, South Asia, and North America. Adopting NT in these areas would result in a 4.8% increase in major food-crop yields, a 15.2% increase in 0–30 cm SOC stocks, and a 6.4% reduction in global cropland emissions, respectively. These findings underscore the relevance of implementing NT in suitable regions by adopting it into Good Agricultural Practice Guidelines.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1021/acs.est.6c04705first seen 2026-11-10 05:13:14 · last seen 2026-11-14 05:22:38
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