温暖化による農業由来の亜酸化窒素排出は肥料管理の緩和効果を相殺し得る
Warming-induced agricultural nitrous oxide emissions can offset mitigation benefits of fertiliser management (原題)
Jize Jiang, Lenny H. E. Winkel, Andrea Stenke, Magdalena Necpálová, Moritz Laub, Iris Feigenwinter, Nina Buchmann, Johan Six
🤖 gxceed AI 要約
日本語
スイスの農地・草地を対象に、生物地球化学モデルDayCentを用いて1981〜2020年のN2O排出をシミュレーション。肥料使用量の25%削減により排出は減少したが、温暖化による排出増加がその効果の一部を相殺した。気候変動に強い統合的緩和戦略の必要性を示す。
English
Using the DayCent model at 1 km resolution across Switzerland, this study quantifies N2O emissions from agricultural soils from 1981-2020. A 25% reduction in fertilizer use lowered emissions, but warming-induced increases offset these gains, highlighting the need for climate-resilient mitigation strategies.
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
日本の農業分野でもN2O排出削減は重要であり、肥料管理の効果が温暖化で減殺される可能性は、国内の農業政策やGHGインベントリに示唆を与える。気候変動適応を考慮した緩和策の設計に参考となる。
In the global GX context
This study provides empirical evidence that climate warming can undermine agricultural mitigation efforts, relevant for global climate policy and N2O inventories. It underscores the need to integrate climate resilience into agricultural N2O reduction strategies, informing IPCC guidelines and national mitigation plans.
👥 読者別の含意
🔬研究者:Provides quantitative evidence of climate-mitigation trade-offs in agricultural N2O emissions, useful for modeling and policy research.
🏢実務担当者:Highlights that fertilizer management alone may be insufficient under warming, suggesting adaptive strategies for agricultural sustainability.
🏛政策担当者:Informs agricultural climate policy by showing that mitigation benefits can be offset by warming, necessitating integrated approaches.
📄 Abstract（原文）
Abstract. Agriculture is the dominant source of anthropogenic nitrous oxide (N2O), a potent greenhouse gas with a high global warming potential. In Switzerland, substantial changes in fertiliser use alongside climatic conditions have occurred over the past four decades, yet the relative contributions of management practices versus environmental change to long-term N2O emission trends remain incompletely understood. Here, we applied the biogeochemical model DayCent at 1 km resolution across Switzerland, integrating spatially explicit datasets on climate, soil properties and agricultural management, to quantify N2O emissions for the period 1981–2020 from croplands and grasslands and attribute emission changes to management versus climate drivers. Simulated national N2O emissions from agricultural soils declined by roughly 5 % from 4.0 to 3.8 kt N yr⁻¹ between the 1980s and 2010s, primarily due to a 25 % reduction in N fertiliser use. Our attribution simulations suggested that under real climate conditions, such a decrease in fertiliser N inputs (–25 %) over the period studied lowered emissions by 15.2 % in croplands and by 12.0 % in grasslands (including permanent meadows and pastures, and high alpine summer pastures). However, compared to a control scenario (in the absence of climate change), rising temperatures over the past 40 years offset these gains, increasing emissions by 5.7 % in croplands and 13.6 % in grasslands. These results show that warming-induced N2O emissions partially negate mitigation from improved fertiliser management, highlighting the need for integrated agricultural N2O mitigation strategies that are resilient to future warming.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.5194/egusphere-2026-4445first seen 2026-09-01 05:09:16
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