Life‐cycle carbon emissions and sequestration mechanisms under contrasting rice rotation systems
対照的な水田輪作体系におけるライフサイクル炭素排出と隔離メカニズム (AI 翻訳)
Deping Zhou, Zheng Zhao, Qingfeng Wang, Changbin Chu, Xiangyang Gui, Lin Du, Jinxi He, Shuhang Wu
🤖 gxceed AI 要約
日本語
水田-バイオマス（RB）輪作システムは、水田-休閑（RF）システムと比較して、メタン排出を42.34%削減し、土壌有機炭素含有量を15.12から18.22 g kg⁻¹に増加させた。総炭素排出量は30.26%減少し、炭素排出原単位も1.46から1.04 kg CO₂ kg⁻¹に改善した。RB輪作は温室効果ガス削減と炭素隔離の両面で有効な栽培方法である。
English
The rice-biomass rotation system reduced methane emissions by 42.34% and increased soil organic carbon from 15.12 to 18.22 g kg⁻¹ compared to rice-fallow. Total carbon emissions fell by 30.26% and carbon emission intensity decreased from 1.46 to 1.04 kg CO₂ kg⁻¹. The system demonstrates dual benefits for greenhouse gas mitigation and carbon sequestration.
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
日本でも水田農業のGHG削減が課題となる中、RB輪作のようなバイオマス利用による炭素隔離・排出削減の実証データは、日本の農業版GX推進に示唆を与える。特に土壌炭素貯留の定量化はカーボンファーミングの評価基盤として有用。
In the global GX context
This study provides empirical evidence for integrated biomass rotation systems to reduce agricultural GHGs and enhance soil carbon sequestration, supporting global net-zero targets and sustainable agriculture policies.
👥 読者別の含意
🔬研究者:Provides mechanistic understanding of carbon dynamics under different rice rotations with life-cycle assessment.
🏢実務担当者:Can inform sustainable rice cultivation practices and carbon footprint reduction strategies for farmers and agribusiness.
🏛政策担当者:Supports policy design for agricultural carbon credits and incentives for biomass rotation systems.
📄 Abstract（原文）
Abstract BACKGROUND Reducing the carbon footprint of rice production is critical for achieving carbon neutrality targets and advancing sustainable agriculture. Nevertheless, the mechanisms underlying the impacts of different rotation treatments on carbon emissions remain poorly understood. This study conducted field experiments comparing rice–fallow (RF) and rice–biomass (RB) rotations were combined with an environmentally extended input–output life cycle assessment to quantify carbon emissions and evaluate their impacts on greenhouse gas emissions and soil carbon sequestration. RESULTS The RB system reduced the paddy ecosystem global warming potential by 32.88%, with methane (CH₄) and nitrous oxide (N₂O) emissions decreasing by 42.34% (from 268.32 to 154.71 kg ha −1 ) and 4.36% (from 9.41 to 9.00 kg ha −1 ), respectively. Total carbon emissions declined by 30.26% compared to the RF system, and carbon emission intensity fell from 1.46 to 1.04 kg CO₂kg −1 . Soil organic carbon content increased from 15.12 to 18.22 g kg −1 , indicating strong carbon sequestration. Reduced emissions were primarily driven by improvements in soil physicochemical properties, highlighting the dual benefits of RB rotation in mitigating greenhouse gas emissions and enhancing soil carbon storage. CONCLUSION Overall, the RB rotation system effectively reduced greenhouse gas emissions and enhanced soil carbon storage, demonstrating a feasible and efficient green cultivation practice for achieving carbon sequestration, emission reduction and productivity improvement in rice production. © 2026 Society of Chemical Industry.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1002/jsfa.70941first seen 2026-07-30 05:45:24
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