中国食用原料林苗木生产系统碳排放及活动足迹评估

刘倩文; 赵梅芳; 郭飞; 付军; 康鹏; 谭一波; 郑威; 孙孟德; 韦兰英

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中国环境科学 ›› 2025, Vol. 45 ›› Issue (5) : 2884-2896.

碳排放控制

中国食用原料林苗木生产系统碳排放及活动足迹评估

刘倩文^1,2, 赵梅芳^1,2, 郭飞³, 付军³, 康鹏^1,2, 谭一波^4,5, 郑威^4,5, 孙孟德^1,2, 韦兰英⁶

作者信息 +

Carbon emission and activity footprint assessment of edible raw material forest seedling production systems in China

LIU Qian-wen^1,2, ZHAO Mei-fang^1,2, GUO Fei³, FU Jun³, KANG Peng^1,2, TAN Yi-bo^4,5, ZHENG Wei^4,5, SUN Meng-de^1,2, WEI Lan-ying⁶

Author information +

文章历史 +

摘要

在全球气候治理与"双碳"战略协同推进背景下,林业碳汇体系建设亟需突破苗木生产环节的碳计量瓶颈.食用原料林苗木对改善生态环境和提高经济收入具有重要意义,估算苗木生产的碳足迹对于评估林业碳汇至关重要.以典型食用原料林8cm×12cm八角容器苗为研究对象,,建立一个基于过程的生命周期清单(LCI)数据集,并构建生命周期评价(LCA)模型.通过调查广西现有八角育苗基地的原始数据,计算苗木生产从种子采集到苗木运输至零售商三个阶段产生的碳排放.结果显示,一株八角苗木一年产生的全球变暖潜势(GWP)为0.145kgCO₂e,其中能源消耗(57.2%)和物料投入(28.8%)为主要排放源,分别集中于电力消耗(占能源排放75.9%)和水资源利用(占物料排放60%).在八角苗木生产活动中,田间容器苗阶段的灌溉活动是影响其GWP的主要因素(0.07kgCO₂e/株).敏感性分析显示能源消耗的变化对碳足迹影响最大(0.804),其中大部分来自于柴油(42.4%).结果表明,优化清洁能源替代、实施精准水肥管理等可降低苗木生产过程中碳排放,对推进食用林产品碳标签制度建设和林业碳中和进程具有实践指导价值.

Abstract

Under the synergistic advancement of global climate governance and China's "Dual Carbon" strategy, the development of forestry carbon sink systems urgently required breakthroughs in carbon quantification bottlenecks within seedling production. Edible raw material forests played an important role in improving the ecological environment and increasing economic growth, and estimating the carbon footprint of seedling production was crucial for assessing the carbon sink of forestry. By surveying existing star anise nursery operations for primary data in Guangxi, a new process-based life cycle inventory (LCI) dataset an 8cm×12cm star anise seedling of a typical edible raw material forest production system was created, covering three stages from seed collection to the transportation of seedlings to retailers. Incorporating the new LCI data into life cycle assessment (LCA) method, the total global warming (GW) impact of a star anise seedling was 0.145kgCO₂e, of which energy and materials consumption constituted 57.2% and 28.8% of total emissions. Electricity use is dominated by irrigation demands (75.9%) and water was estimated to be just over half of these emissions (60%). Among the production activities, the total environmental impact of the product was dominated by the irrigation at the field container seedling stage, which contributed 0.07kgCO₂e/seedling. In this case, the change in energy consumption had a notable impact on the carbon footprint, with a sensitivity of 0.804. Among them, the input of diesel had the largest impact on carbon footprint (42.4%). The results indicated that optimizing clean energy structures and implementing efficient water and nutrient management strategies could significantly reduce carbon emissions during seedling cultivation and offered practical guidance for advancing carbon labeling systems for edible forest products and supported forestry carbon neutrality progress.

导出引用

刘倩文, 赵梅芳, 郭飞, 付军, 康鹏, 谭一波, 郑威, 孙孟德, 韦兰英. 中国食用原料林苗木生产系统碳排放及活动足迹评估[J]. 中国环境科学. 2025, 45(5): 2884-2896

LIU Qian-wen, ZHAO Mei-fang, GUO Fei, FU Jun, KANG Peng, TAN Yi-bo, ZHENG Wei, SUN Meng-de, WEI Lan-ying. Carbon emission and activity footprint assessment of edible raw material forest seedling production systems in China[J]. China Environmental Science. 2025, 45(5): 2884-2896

中图分类号： X820.3

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