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ノースカロライナ州の地場切り花サプライチェーンにおける生産・流通経路の炭素排出

Carbon Emissions in Production and Distribution Pathways of North Carolina’s Local Cut Flower Supply Chains (原題)

Amanda Solliday, Minliang Yang, Melinda Knuth

Hortscience📚 査読済 / ジャーナル2026-08-01#サプライチェーンOrigin: US対象セクター: agriculture
DOI: 10.21273/hortsci19413-26
原典: https://doi.org/10.21273/hortsci19413-26
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🤖 gxceed AI 要約

日本語

本研究は、ノースカロライナ州の切り花サプライチェーンにおける温室効果ガス排出量を、直接配送モデルとハブ＆スポークモデルで比較した。10の生産者、14の小売業者、1つの卸売ハブからデータを収集し、ライフサイクル評価を実施。輸送が炭素排出の約90%を占め、生産は10%未満、保管は2%であった。ハブ配送は高移動距離シナリオで排出削減の可能性を示した。

English

This study compared GHG emissions from two distribution models for cut flower supply chains in North Carolina: direct delivery and hub-and-spoke. Life-cycle assessment using data from 10 growers, 14 retailers, and a wholesale hub showed that transportation dominated emissions (nearly 90%), while production contributed under 10% and storage 2%. Hub distribution showed potential to reduce emissions in high-travel scenarios.

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

日本でも花卉や農産物のサプライチェーン排出削減が注目される中、この研究は物流最適化の重要性を示す事例となる。ただし、対象が米国地方都市であり、日本の市場構造にそのまま適用できるとは限らない。

In the global GX context

This paper provides a detailed LCA case study for cut flower supply chains, relevant to Scope 3 emission reduction strategies in agricultural sectors globally. The finding that transportation emissions far exceed production emissions underscores the need for logistics optimization in local food/flower systems.

👥 読者別の含意

🔬研究者:A methodologically sound LCA for a previously understudied product (cut flowers) with clear allocation of life-cycle stages.

🏛政策担当者:Offers evidence that supporting local hub infrastructure may lower supply chain emissions for perishable goods.

📄 抄録（日本語訳）

花卉供应链正朝着环境可持续性方向转变，这一趋势由消费者需求以及旨在减少环境影响的行业倡议所驱动。尽管以往研究已探索了部分观赏园艺产品（包括容器育苗的盆栽植物和树木）的碳足迹，但美国国内切花生产和分销在很大程度上仍未得到充分研究。了解与供应链模式相关的温室气体（GHG）排放，可为国内花卉产业的可持续实践提供指导。本研究聚焦于六个具有代表性的花卉和绿叶植物类群，比较了两种分销模式下的这些排放：从种植者到花卉零售商的直接点对点配送，以及通过区域批发枢纽整合库存的轴辐式网络。库存数据收集自北卡罗来纳州的10家种植者、14家零售商和一个批发枢纽。生命周期模型使用openLCA 2.5.0软件，依据HortiFootprint类别规则框架构建，结果按每枝功能单位进行归一化处理。结果表明，运输在所有花卉的碳足迹中占主导地位，占季节性总排放的近90%，而生产贡献不足10%，储存占2%。这凸显了优先优化供应链物流以提升可持续性的重要性，分销环节的碳排放显著超过生产和储存环节。针对花卉运至最终零售地点的运输脱碳建议包括：尽可能合并装运和配送，并探索低排放车辆。在长途运输情景下，采用枢纽分销显示出减少温室气体排放的潜力，随着国内花卉产量的增加，这提供了一种低碳选择。此外，本研究还计算了碳的社会成本，以从经济角度审视花卉供应链的环境影响。

AI 翻訳（deepseek-v4-flash）。 正確を期す場合は下の原文を参照してください。

📄 Abstract（原文）

Floriculture supply chains are undergoing a shift toward environmental sustainability, driven by consumer demand and industry initiatives to reduce environmental impacts. Although previous research has explored the carbon footprint of some ornamental horticultural products, including containerized bedding plants and trees, domestic US cut flower production and distribution remains largely understudied. Understanding the greenhouse gas (GHG) emissions associated with supply-chain models can guide sustainable practices in the domestic floriculture industry. Focusing on six representative flower and greenery taxa, this study compared these emissions from two distribution models: direct point-to-point delivery from growers to floral retailers and a hub-and-spoke network that consolidates inventory through regional wholesale hubs. Inventory data were gathered from 10 growers, 14 retailers, and a wholesale hub in North Carolina. Life-cycle models were developed in openLCA 2.5.0 using the HortiFootprint Category Rules framework, and results were normalized to a per-stem functional unit. The results show that transportation dominated the carbon footprint across all flowers, accounting for nearly 90% of total seasonal emissions, whereas production contributed less than 10% and storage provided 2%. This highlights the importance of prioritizing supply-chain logistics to improve sustainability, with carbon emissions from distribution significantly exceeding those from production and storage. Recommendations for decarbonizing transportation of flowers to the final retail location include combining shipments and deliveries when possible and exploring low-emission vehicles. Using hub distribution suggests potential to reduce GHG emissions in high-travel scenarios, offering a lower carbon option as domestic flower production increases. Furthermore, the social cost of carbon was calculated to provide an economic perspective on the environmental impact of floral supply chains.

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