中国牛肉システムのカーボンフットプリント探求：ライフサイクル評価、デカップリング分析、空間効果
Exploring the carbon footprint of Chinese beef systems – a life‑cycle assessment, decoupling analysis and spatial effects (原題)
Xianghui Yin, Shiqin Sun, Jiangge Wang, Tengyun Gao
🤖 gxceed AI 要約
日本語
中国本土の牛肉生産を対象に、2002〜2022年の省別カーボンフットプリントをLCAで定量化した研究。大規模経営ほど炭素強度が低く、腸内発酵が最大排出源でメタンが全体の約74%を占める。排出と産出額は多くの省で連動して増加し、空間的回帰により経済水準や農村所得などが炭素強度に有意に影響することが示された。
English
This study quantifies the carbon footprint of beef cattle production across Chinese provinces (2002–2022) using life-cycle assessment. Large-scale farms show lower carbon intensity, enteric fermentation dominates emissions, and methane accounts for ~74% of the total. Decoupling and spatial regression analyses reveal that emissions largely grew with output value, with economic and income factors significantly shaping carbon 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Scope 3や食品ロス、畜産由来メタン削減が開示・削減目標の論点となりつつある。本論文は農畜産セクターの排出構造と地域差を定量的に示し、サプライチェーン排出把握や削減戦略立案の参考になる。
In the global GX context
As global disclosure frameworks (ISSB, CSRD) expand into agriculture and food supply chains, this paper provides empirical evidence on livestock emissions and decoupling dynamics in the world's largest beef-producing country, informing Scope 3 accounting and transition risk assessment for agri-food sectors.
👥 読者別の含意
🔬研究者:LCAと空間計量を組み合わせた畜産排出研究の手法と中国の地域別データを参照できる。
🏢実務担当者:食品・畜産サプライチェーンにおけるScope 3排出の主要源（腸内発酵・メタン）と規模別傾向を把握し、削減優先順位の検討に活用できる。
🏛政策担当者:畜産由来メタン削減と地域経済のデカップリングを促す政策設計の基礎資料として、中国の事例を参考にできる。
📄 Abstract（原文）
Introduction China’s beef cattle industry is currently in a phase of expansion, while its greenhouse gas (GHG) emission characteristics remain insufficiently elucidated. To fill this research gap, this study employed Life Cycle Assessment (LCA) to quantify the carbon footprint of beef cattle production across provinces in mainland China during the period 2002–2022. Methods The analysis encompassed total GHG emissions across three farming scales—small-scale (1–49 heads), medium-scale (50–500 heads), and large-scale (>500 heads)—classified by annual slaughter volume, and divided the entire production system into four stages: feed cultivation, enteric fermentation, manure management, and processing and transportation. Results Large-scale operations exhibited relatively lower carbon intensity, with an average of 23.71 kg CO 2 e per kilogram of beef, whereas all three scales demonstrated a fluctuating yet gradually increasing trend over the study period. Enteric fermentation emerged as the dominant emission source, with an annual average of 268.84 TgCO 2 e. Methane consistently accounted for the largest proportion of GHG emissions, averaging 73.59% of the annual total. Spatially, both total emissions and various carbon intensity indicators showed a westward shift, with western regions lagging behind eastern regions in emission reduction performance. Decoupling analysis revealed that for most provinces from 2002 to 2022, GHG emissions from beef cattle production grew in tandem with the output value of the cattle industry. Spatial regression further identified significant agglomeration effects, with carbon intensity being significantly influenced by the economic level of the beef cattle sector, rural per capita disposable income, the share of the cattle industry in the regional economy, and grain yield.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3389/fsufs.2026.1849066first seen 2026-09-17 04:57:45
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