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Assessment of Greenhouse Gas Emissions, Economic Benefits, and Emergy-Based Sustainability in Ratoon Rice–Duck Coculture in the Jianghan Plain

江漢平原における再生稲-アヒル共作の温室効果ガス排出、経済的利益、およびエメルギーに基づく持続可能性の評価 (AI 翻訳)

Yong Zhou, Changchun Li, Wenjian Wang, Zuolin Zhang, Qiao Luo, Jiangwen Nie, Bo Zhu, Zhangyong Liu, Zijuan Ding

Agriculture📚 査読済 / ジャーナル2026-05-27#その他Origin: CN
DOI: 10.3390/agriculture16111172
原典: https://doi.org/10.3390/agriculture16111172

🤖 gxceed AI 要約

日本語

中国江漢平原での3年間の圃場試験により、再生稲単作（RR）から再生稲-アヒル共作（RR-D）への転換が温室効果ガス排出に与える影響を評価。RR-Dはメタン排出を25.7-39.5%削減する一方、一酸化二窒素を18.7-122.2%増加。平均地球温暖化係数とGHG強度はそれぞれ27.8%、30.7%減少し、経済的利益は131.0-167.1%向上したが、エメルギー持続可能性指標は低下した。

English

A three-year field experiment in the Jianghan Plain, China, compared greenhouse gas emissions, economic benefits, and emergy-based sustainability between ratoon rice monoculture (RR) and ratoon rice-duck coculture (RR-D). RR-D significantly reduced CH4 emissions by 25.7-39.5% but increased N2O emissions by 18.7-122.2%. Global warming potential and GHG intensity decreased by 27.8% and 30.7%, respectively, while economic benefits increased by 131.0-167.1%. However, emergy sustainability indicators (UEVBenefits, %R, EYR, ESI) worsened, suggesting a need for optimization.

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

日本では水田からのメタン排出削減が重要な課題であり、本論文はアヒルとの共作による削減効果を定量的に示している。日本の水田農業におけるGHG削減策や有機農業との組み合わせを検討する際の参考となる。

In the global GX context

This study provides empirical evidence on the trade-offs between GHG mitigation and sustainability in rice-duck coculture, relevant for global agricultural climate policies and sustainable intensification strategies. The findings can inform initiatives like the FAO's low-emission rice production and national GHG inventories.

👥 読者別の含意

🔬研究者:Agricultural researchers can use the GHG emission and emergy data to model environmental impacts of integrated rice-livestock systems.

🏢実務担当者:Farmers and agribusinesses can assess the economic and environmental viability of adopting rice-duck coculture, noting the need to optimize external inputs.

🏛政策担当者:Policymakers can consider rice-duck coculture as a potential option for agricultural GHG mitigation, but should balance with emergy sustainability.

📄 Abstract（原文）

Ratoon rice monoculture system (RR) is a labor-efficient and high-yielding cropping system in southern China. The rice–duck coculture system has been increasingly recognized as a mutually beneficial agricultural practice. However, the environmental impacts, economic performance, and sustainability of transitioning from a RR monoculture to a ratoon rice–duck system (RR-D) coculture remain unclear. A three-year (2022–2024) field experiment with three replications was therefore conducted in the Jianghan Plain, China (29°41′ N, 112°25′ E), to compare greenhouse gas (GHG) emissions, economic benefits, and emergy-based sustainability indicators between the RR and RR-D systems at a significant level of p < 0.05. The results showed that the RR-D significantly reduced CH4 emissions by 25.7–39.5% but increased N2O emissions by 18.7–122.2%. The average global warming potential (GWP) and GHG intensity decreased by 27.8% and 30.7%, respectively. Meanwhile, RR-D increased economic benefits by 131.0–167.1%, but lowered the unit emergy value per economic benefit (UEVBenefits), renewable emergy ratio (%R), emergy yield ratio (EYR), and emergy sustainability index (ESI), and increased the environmental loading ratio (ELR). Overall, RR-D may improve economic returns and GHG mitigation, but its emergy-based sustainability requires optimization of feed, labor, and duck stocking density.

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