Impact of Organic Fertilizer Substitution on Greenhouse Gas Emissions from Vegetable Production Systems: A Global Meta-Analysis
有機肥料代替が野菜生産システムの温室効果ガス排出に与える影響：全球メタ分析 (AI 翻訳)
Lusheng Li, Xiangjie Chen, Lili Zhao, Ling Zhong, Lixia Guo, Yuan Wang, Hongbo Xue, Haixia Qin, Minggui Zhang, Guanghua Yao
🤖 gxceed AI 要約
日本語
野菜作付け体系における有機肥料代替の温暖化影響を定量化した全球メタ分析。有機肥料は全般的にCH4排出とGWPを増加させるが、特定の気候・土壌条件（年降水量400mm未満、全窒素3g/kg以上）ではN2O排出削減によりGWPを低減できる。10年以上の施肥継続や適度な代替率（33-66%）がGHG強度の低下に有効。
English
A global meta-analysis quantifying the effects of organic fertilizer substitution on greenhouse gas emissions in vegetable systems. While organic fertilizer generally increases CH4 and global warming potential (GWP), under specific conditions (precipitation <400 mm, soil total nitrogen ≥3 g/kg) it can reduce GWP via lower N2O emissions. Long-term application (≥10 years) and moderate substitution rates (33-66%) reduce GHG intensity.
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
日本ではみどりの食料システム戦略の下、化学肥料削減と温室効果ガス削減が推進されている。本メタ分析は有機肥料代替の効果が条件依存であることを示し、画一的な推進ではなく地域・土壌条件に応じた精密管理の重要性を示唆する。
In the global GX context
Agriculture accounts for a significant share of global GHG emissions. This meta-analysis provides evidence-based guidance for optimizing organic fertilizer use to mitigate N2O and CH4 emissions, relevant to national GHG inventories and climate-smart agriculture policies worldwide.
👥 読者別の含意
🔬研究者:Provides a comprehensive meta-regression framework and SEM analysis identifying key drivers of GHG emissions in organic fertilizer systems.
🏢実務担当者:Offers actionable insights on optimal substitution rates, irrigation, and tillage practices to reduce GHG intensity in vegetable farming.
🏛政策担当者:Informs agricultural climate mitigation policies by highlighting conditions under which organic substitution reduces GWP, supporting targeted interventions.
📄 Abstract（原文）
Controversy persists on a global scale regarding the trade-offs between greenhouse gas (GHG) emissions, yield, the global warming potential (GWP), and GHG intensity (GHGI) following organic fertilizer substitution within vegetable cropping systems. This study aimed to quantify these effects under diverse conditions and elucidate the direct and indirect drivers governing these outcomes through a meta-analysis and structural equation modeling (SEM). We synthesized 655 paired observations from 69 published studies using random-effects meta-analysis, finding that organic fertilizer substitution significantly increased CH4 emissions and GWP compared to inorganic fertilizer controls. Although this was the general trend, organic fertilizer could reduce GWP under specific climatic and soil conditions by reducing N2O emissions, such as mean annual precipitation <400 mm or soil total nitrogen ≥3 g kg−1. These conditions were also associated with substantially higher yield and lower GHGI. Furthermore, SEM demonstrated that field management practices exerted significant direct effects on N2O emissions, GWP, and GHGI. Reductions in N2O emissions, GWP, and GHGI could be achieved with fertilizer application duration ≥10 years, total N application rate ≥300 kg ha−1, and field cultivation or plowing. GHGI was also reduced through yield enhancement under a moderate organic substitution rate (33–66%) or irrigation ≥300 mm. Our study provides a scientific basis for moving beyond universal recommendations towards precision organic management, which is essential for optimizing fertilization strategies to mitigate agricultural GHG emissions.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.3390/agronomy16121205first seen 2026-06-23 06:07:49
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