ナイジェリアの農業活動由来温室効果ガス排出量の把握：グローバルな気候行動に向けて
Tracking the Emission Levels of Greenhouse Gases from Agricultural Activities in Nigeria for Global Climate Action (原題)
Gabriel Tordue Buluku, Msugh Stephen Shiada, Usman Salifu Oma, Erhuen Ejomafuvwe
🤖 gxceed AI 要約
日本語
ナイジェリア6地域の牧畜・農地計150地点でCH₄・N₂O・CO₂濃度を実測し、IPCC Tier 1手法で年間排出量を推計した研究。家畜150頭・農地100haの例示的インベントリは約67.7百万kg CO₂e/年となり、土地利用変化に伴う土壌炭素損失が大半を占めた。土壌炭素保全や堆肥管理改善、施肥効率化、水田の水管理変更を緩和策として挙げる。
English
This study measured CH₄, N₂O and CO₂ at 25 livestock and farmland sites in each of Nigeria's six geopolitical zones and estimated annual emissions using an IPCC Tier 1 approach. An illustrative inventory (150 livestock heads, 100 ha farmland) totalled ~67.7 million kg CO₂e/year, dominated by soil-carbon losses from land-use change. Soil-carbon conservation, manure management, fertiliser efficiency and alternate rice water management are flagged as mitigation options.
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
日本企業のScope 3（農産物・畜産物調達）や一次産業由来排出の算定に関わる基礎的知見として参考になるが、日本の制度・政策との直接の接続は薄い。
In the global GX context
Adds country-level agricultural emissions evidence from a region underrepresented in global inventories, relevant to GHG Protocol agriculture guidance and IPCC refinement debates, though it is not yet disclosure-grade data.
👥 読者別の含意
🔬研究者:IPCC Tier 1推計の不確実性と土壌炭素損失の支配性を示す、途上国農業インベントリの実証例として有用。
🏢実務担当者:農産物・畜産物を調達する企業がScope 3カテゴリ1の排出原単位を検討する際の地域データの一例となる。
🏛政策担当者:農業由来排出の国家インベントリ整備と活動データ検証の必要性を示す事例として参照できる。
📄 Abstract（原文）
Greenhouse gas (GHG) emissions associated with livestock, crop production and land-use change are important considerations for climate action in Nigeria. This study assessed concentrations of methane (CH₄), nitrous oxide (N₂O) and carbon dioxide (CO₂) at selected livestock and farmland sites across the country's six geopolitical zones. Field measurements were undertaken at 25 sites per zone, while annual emissions were estimated using an IPCC Tier 1 approach with activity data and specified emission factors. Livestock-site concentrations ranged from 1.90 to 3.67 ppm for CH₄, approximately 0.35 to 0.39 ppm for N₂O and 340.3 to 390.1 ppm for CO₂. Corresponding farmland concentrations ranged from 80.44 to 157.2 ppm, 0.293 to 0.330 ppm and 555.21 to 775.31 ppm, respectively. An illustrative emissions inventory based on 150 livestock heads and 100 ha of farmland yielded a total of 67,738,300.75 kg CO₂e/year. Within this estimate, soil-carbon losses associated with land-use change accounted for 67,100,000 kg CO₂e/year, exceeding the contributions of rice cultivation, livestock and nitrogen-related activities. A projection scenario considered annual livestock growth of 2% with farmland area held constant through 2030. The findings identify soil-carbon conservation, improved manure management, more efficient fertiliser application and alternative water management in rice cultivation as relevant mitigation considerations. Further validation of activity data, emission estimates and projections is required before extrapolating these results to national agricultural emissions.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.9734/ijecc/2026/v16i105745first seen 2026-10-28 05:32:40 · last seen 2026-11-06 05:35:46
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