持続可能な放牧管理が地中海性放牧地の気候変動緩和を支える
Sustainable grazing management supports climate change mitigation in a mediterranean pasture (原題)
Hafiz Khuzama Ishaq, Eleonora Grilli, Filomena Ardolino, Simona Castaldi
🤖 gxceed AI 要約
日本語
ポルトガル・アレンテージョの商業的モンタード羊農場を対象に、2018年の輪換放牧への転換前後でカーボンフットプリントをLCAで定量化した。転換後は総排出量が34%減、子羊肉のグロスCFは16.2から12.7 kg CO2-eq/kg LWへ低下。土壌炭素蓄積を算入すると純CFは−7.1 kg CO2-eq/kg LWとなり、農場は炭素吸収源に転じた。
English
A cradle-to-farm-gate LCA of a commercial Montado sheep farm in Alentejo, Portugal, quantified carbon footprint before and after a 2018 transition to rotational grazing. Total emissions fell 34%, and lamb gross CF dropped from 16.2 to 12.7 kg CO2-eq/kg LW. Including soil carbon accrual (2.47–2.9 t C/ha/yr), the farm became a net carbon sink at −7.1 kg CO2-eq/kg LW.
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
日本では農林水産省の「みどりの食料システム戦略」やJ-クレジットの農地土壌炭素貯留分野と接続しうる。畜産由来のGHG削減と土壌炭素クレジットを組み合わせた日本型カーボンファーミング設計の参考事例となる。
In the global GX context
This farm-level evidence on rotational grazing and soil carbon accrual informs the growing global debate on carbon farming, Scope 3 agricultural emissions, and the inclusion of soil carbon in corporate and national GHG inventories under IPCC AR6 methodologies.
👥 読者別の含意
🔬研究者:LCAと土壌炭素動態を統合した農場レベルCF評価の実証例として、放牧管理と気候緩和の因果関係を検討する際の参照点となる。
🏢実務担当者:畜産・食品企業がScope 3排出削減やカーボンファーミング調達基準を設計する際、放牧管理転換の定量的便益を示す根拠として活用できる。
🏛政策担当者:農地土壌炭素貯留を気候政策・クレジット制度に組み込む際、実農場での検証データとして参照価値がある。
📄 Abstract（原文）
Mediterranean dryland sheep farms face interconnected challenges of high greenhouse gas emission intensity and progressive land degradation driven by continuous, unmanaged grazing. Rotational grazing (RG) has been proposed as an integrated response, but field evidence documenting the climate outcomes of real farm-level grazing management transitions remains scarce. This study quantifies the carbon footprint (CF) of a commercial Montado sheep farm in Mediterranean drylands (Alentejo, Portugal) before and after a management transition implemented in 2018, using a cradle-to-farm-gate life cycle assessment and 100-year global warming potentials from the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. Prior to 2018, the farm operated under continuous grazing with documented land degradation and soil organic carbon below 2%. In 2018, the farm converted to RG through paddock restructuring, reduced stocking pressure, and a progressive reduction of external feed and fertilizer inputs. Total farm emissions were 34% lower in the post-transition period (1,165.1 t CO 2 -eq yr -1 ) than pre-transition (1,756.6 t CO 2 -eq yr -1 ), driven by reduced feed, fertilizer, and fuel inputs. Farm operations showed the largest reduction (59%), while enteric fermentation remained the dominant source in both periods. The gross CF of lamb meat decreased from 16.2 to 12.7 kg CO 2 -eq kg -1 live weight (LW) following the transition. Post-transition soil carbon (C) accrual was estimated at 2.47 to 2.9 t C ha -1 yr -1 across 200 ha of pasture, consistent with early-phase recovery from a severely degraded, low-carbon baseline. When incorporated into net C accounting, the farm shifted to a C sink, giving a net carbon footprint of −7.1 kg CO 2 -eq kg -1 LW after accounting for soil carbon accrual. These findings demonstrate that a whole-farm grazing management transition can simultaneously reduce emission intensity, generate measurable soil C accrual, and deliver ecosystem services, with direct relevance to C farming policy and climate strategy for Mediterranean dryland livestock systems.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3389/fenvs.2026.1917508first seen 2026-10-01 04:45:12
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。