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    中国典型山楂和樱桃产区碳足迹分析及减排路径

    Carbon footprint analysis and emission reduction pathways in typical hawthorn and cherry production areas in China

    • 摘要:
      目的 山楂和樱桃作为中国特色水果,在林果业中占据重要地位。碳足迹是衡量生产过程对气候变化潜在影响的重要指标,解析其构成对推动林果产业绿色低碳发展具有重要意义。
      方法 基于典型山楂和樱桃产区的调查数据,采用生命周期评价方法,评估我国绛县山楂和樱桃从摇篮到大门的碳足迹,利用碳经济效率指数分析不同区域的低碳优势,并探讨果园减排潜力。
      结果 (1)山楂和樱桃种植的单位面积碳足迹分别为6.93 和8.62 t/hm2,单位产量碳足迹分别为0.23和0.57 t/t,尿素、有机肥用量及种植面积的不同导致区域内单位面积碳足迹存在显著差异;(2)施肥产生的N2O排放占单位面积碳足迹的36.60% ~ 65.34%,是山楂和樱桃种植过程中碳足迹的主要来源;(3)单位产量碳足迹与碳经济效率呈负相关,碳足迹较低的区域内碳经济效率较高,低碳优势显著;(4)在4种模拟情景下,通过应用绿色肥料混施、灌溉模式优化及新能源技术开发等综合管理措施,最终使山楂和樱桃的排放量分别降低77.06%和77.72%。
      结论 在山楂和樱桃种植中,樱桃的单位面积和单位产量碳足迹显著高于山楂,而肥料施用是樱桃和山楂碳足迹的主要构成部分,单位产量碳足迹与碳经济效率呈负相关。通过采取合理的减排路径,山楂和樱桃园有潜力实现碳中和。

       

      Abstract:
      Objective As characteristic fruits in China, hawthorn (Crataegus pinnatifida) and cherry (Prunus pseudocerasus) play a pivotal role in the fruit industry. Carbon footprint serves as a critical metric for quantitatively assessing the potential impact of production processes on climate change. Analyzing the carbon footprint composition of hawthorn and cherry production is essential for promoting green and low-carbon development within the fruit industry and cultivation regions.
      Method This study utilized survey data from hawthorn and cherry orchards in Jiang County, Shanxi Province of northern China, to evaluate their carbon footprints from cradle to gate based on the life cycle assessment method, analyzed low-carbon advantages of different areas using carbon economic efficiency index, and explored the mitigation potential in hawthorn and cherry orchards.
      Result (1) The carbon footprints per unit area of hawthorn and cherry were 6.93 and 8.62 t/hm2, respectively, while the carbon footprints per unit yield were 0.23 and 0.57 t/t. Variations in urea and organic fertilizer application, as well as planting area, resulted in significant regional differences in carbon footprints per unit area. (2) Nitrous oxide (N2O) emissions from fertilization accounted for 36.60%–65.34% of the per-unit-area carbon footprint, representing the dominant source in both hawthorn and cherry production. (3) The carbon footprints per unit yield exhibited a negative correlation with the carbon emission efficiency. Regions with lower carbon footprints per unit yield demonstrated higher carbon emission efficiency and greater low-carbon advantages. (4) Under four simulated scenarios, the integrated implementation of green fertilizer blending, optimized irrigation practices, and renewable energy technologies reduced emissions by 77.06% and 77.72% for hawthorn and cherry, respectively.
      Conclusion In the cultivation of hawthorn and cherry, the carbon footprints per unit area and the carbon footprints per unit yield of cherry were significantly higher than those of hawthorn. Fertilizer application is the main component of the carbon footprint of cherry and hawthorn orchards, and the carbon footprints per unit yield is negatively correlated with the carbon emission efficiency. Through a series of emission reduction measures, hawthorn and cherry orchards have the potential to achieve carbon neutrality.

       

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