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首页> 外文期刊>Environmental Science & Technology >Recirculating Aquaculture Is Possible without Major Energy Tradeoff: Life Cycle Assessment of Warmwater Fish Farming in Sweden
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Recirculating Aquaculture Is Possible without Major Energy Tradeoff: Life Cycle Assessment of Warmwater Fish Farming in Sweden

机译：没有重大能量权衡的循环水产养殖：瑞典温水养鱼的生命周期评估

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摘要

Seafood is seen as promising for more sustainable diets. The increasing production in land-based closed Recirculating Aquaculture Systems (RASs) has overcome many local environmental challenges with traditional open net-pen systems such as eutrophication. The energy needed to maintain suitable water quality, with associated emissions, has however been seen as challenging from a global perspective. This study uses Life Cycle Assessment (LCA) to investigate the environmental performance and improvement potentials of a commercial RAS farm of tilapia and Clarias in Sweden. The environmental impact categories and indicators considered were freshwater eutrophication, climate change, energy demand, land use, and dependency on animal-source feed inputs per kg of fillet. We found that feed production contributed most to all environmental impacts (between 67 and 98%) except for energy demand for tilapia, contradicting previous findings that farm-level energy use is a driver of environmental pressures. The main improvement potentials include improved byproduct utilization and use of a larger proportion of plant-based feed ingredients. Together with further smaller improvement potential identified, this suggests that RASs may play a more important role in a future, environmentally sustainable food system.
机译：海鲜被视为对更可持续的饮食有前途。陆基封闭循环水产养殖系统（RASS）的产量越来越多地克服了与富营养化等传统开放式净笔系统的许多当地环境挑战。然而，维持合适的水质所需的能量与相关的排放所需的能量从全球视角视为具有挑战性。本研究使用生命周期评估（LCA）来调查瑞典罗非鱼商业RAS农场的环境绩效和改善潜力。考虑的环境影响类别和指标是淡水富营养化，气候变化，能源需求，土地利用以及每千克圆角的动物源供给输入的依赖。我们发现饲料生产最多为所有环境影响（67至98％）除了为罗非鱼的能源需求外，违背农业水平能源使用是环境压力的驱动因素。主要改善潜力包括改善副产品利用率和使用较大比例的植物饲料成分。鉴定了进一步较小的改善潜力，这表明RASS可能在未来环境可持续的食品系统中发挥更重要的作用。

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  • 来源
    《Environmental Science & Technology》 |2020年第24期|16062-16070|共9页
  • 作者

    Kristina Bergman; Patrik J. G. Henriksson; Sara Hornborg; Max Troell; Louisa Borthwick; Malin Jonell; Gaspard Philis; Friederike Ziegler;

  • 作者单位

    RISE Research Institutes of Sweden Agrifood and Bioscience 402 29 Goteborg Sweden;

    Beijer Institute of Ecological Economics Royal Swedish Academy of Sciences 104 05 Stockholm Sweden Stockholm Resilience Centre Stockholm University 106 91 Stockholm Sweden Worldfish 11960 Penang Malaysia;

    RISE Research Institutes of Sweden Agrifood and Bioscience 402 29 Goeteborg Sweden;

    Beijer Institute of Ecological Economics Royal Swedish Academy of Sciences 104 05 Stockholm Sweden Stockholm Resilience Centre Stockholm University 106 91 Stockholm Sweden;

    RISE Research Institutes of Sweden Agrifood and Bioscience 402 29 Goteborg Sweden;

    Beijer Institute of Ecological Economics Royal Swedish Academy of Sciences 104 05 Stockholm Sweden Stockholm Resilience Centre Stockholm University 106 91 Stockholm Sweden;

    Department of Biological Sciences Norwegian University of Science and Technology 6009 Alesund Norway;

    RISE Research Institutes of Sweden Agrifood and Bioscience 402 29 Goteborg Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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