Greenhouse gas emissions from rice crop production in Jiangxi Province (China) based on life cycle assessment and household panel data
ライフサイクルアセスメントと家計パネルデータに基づく江西省（中国）の水稲生産からの温室効果ガス排出 (AI 翻訳)
Yaqin He, Yanduo Liu, Jinyong Guo
🤖 gxceed AI 要約
日本語
本研究は、江西省2018～2023年の農家パネルデータを用いて、水稲生産の温室効果ガス（GHG）排出量をLCAで算出し、固定効果モデルで要因分析。CH4、灌漑電力CO2、窒素肥料N2Oが主排出源であり、2018～2023年に排出原単位は一度低下後上昇、農家間格差が拡大。早期米は後期米より排出原単位が有意に低く、TFP上昇が排出削減の鍵、作付面積と排出原単位はU字関係、緑色農業補助金は排出削減効果を持つ一方、有機土壌改良材は排出を増加させる。
English
This study uses household panel data from Jiangxi Province (2018-2023) and life cycle assessment to calculate GHG emissions from rice production, then applies a two-way fixed effects model to analyze driving factors. CH4, CO2 from irrigation electricity, and N2O from nitrogen fertilizer are main sources. Emission intensity first declined then increased, with widening farmer gaps. Early rice has significantly lower intensity than late rice. Increasing TFP reduces emissions; planting size has a U-shaped relationship with intensity. Green subsidies reduce intensity; organic amendments increase it.
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
中国の「双炭」目標達成に向け、農業GHG排出の実態解明が急務。日本でも水田からのCH4排出は重要な削減課題であり、本論文のLCA手法や政策評価（補助金効果）は、日本の農業部門におけるGHG排出削減策の設計に示唆を与える。また、SSBJにおける農業関連排出の開示要求が強まる中、日本企業のサプライチェーン排出（Scope3）対応にも参考となる。
In the global GX context
This paper provides empirical evidence on agricultural GHG emission drivers, relevant for global decarbonization pathways. The LCA approach and policy analysis (green subsidies, organic amendments) inform national inventory improvements and agricultural climate policies, especially for rice-producing countries. The findings on TFP and planting size offer insights for sustainable intensification strategies applicable to other regions.
👥 読者別の含意
🔬研究者:Provides a household-level LCA methodology and empirical drivers of rice emission intensity, useful for agricultural mitigation research.
🏢実務担当者:Offers actionable insights: green subsidies reduce emissions, but organic amendments may increase them – relevant for farm management and supply chain decisions.
🏛政策担当者:Demonstrates that green subsidies and TFP improvement are effective for reducing agricultural emissions, informing climate policy design for the rice sector.
📄 Abstract（原文）
Accurately understanding the current status and driving factors of agricultural greenhouse gas (GHG) emissions from rice crop production in China is crucial for achieving the national “dual carbon” goals. Based on a farm household panel dataset collected in Jiangxi Province from 2018 to 2023, the study employs Life Cycle Assessment (LCA) approach to calculate GHG emissions from rice crop production at the household level and further analyzes driving factors of GHG emissions using a two-way fixed effects model. CH 4 emissions from rice planting, CO 2 emissions from electricity used for irrigation, and N 2 O emissions from nitrogen fertilizer application are the main sources of rice crop production GHG emissions. GHG emission intensity from rice crop production at the household level first declined and then increased from 2018 to 2023. The GHG emission intensity gap among farmers has widened during this period. Notably, GHG emission intensity of early rice crop production is significantly lower than that of late rice crop production. An increase in rice TFP was found to be the key factor in reducing GHG emissions. It demonstrated a “U-shaped” relationship between planting size and GHG emission intensity. Additionally, implementing green agricultural subsidy schemes was found to reduce GHG emission intensity significantly. On the contrary, using organic soil amendments tended to increase GHG emission intensity. The study suggests encouraging farmers to improve water, energy, and fertilizer management in rice crop production and optimize production input factors.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.3389/fsufs.2026.1758788first seen 2026-07-17 06:14:48
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