Modelling the drivers of a widespread shift to sustainable diets
Modelling the drivers of a widespread shift to sustainable diets
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DOI：
10.1038/s41893-019-0331-1
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发表时间：
2019-08-01
影响因子：
27.6
通讯作者：
Obersteiner, Michael
中科院分区：
文献类型：
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作者：
Eker, Sibel;Reese, Gerhard;Obersteiner, Michael
减少全球肉类消费可以显著减少食品系统对环境的不利影响，但这需要广泛的饮食改变。这种向可持续饮食的转变取决于一些尚未在粮食系统方面得到解决的行为因素。这项研究将行为饮食转变模型与综合评估模型联系起来，以确定全球饮食变化的主要驱动因素及其对粮食系统的影响。结果表明，社会规范效应（例如，素食主义在人口中的程度，加速进一步转向素食）和自我效能是广泛饮食变化的主要驱动力。这些研究结果强调了价值驱动的行动的重要性，无论是由内在的身份或群体动态的健康和气候风险的看法，在引导饮食变化的动态。
A reduction in global meat consumption can significantly reduce the adverse environmental effects of the food system, but it would require widespread dietary changes. Such shifts to sustainable diets depend on several behavioural factors that have not yet been addressed in relation to the food system. This study links a behavioural diet shift model to an integrated assessment model to identify the main drivers of global diet change and its implications for the food system. The results show that the social norm effect (for instance, the extent of vegetarianism in the population that accelerates a further switch to a vegetarian diet) and self-efficacy are the main drivers of widespread dietary changes. These findings stress the importance of value-driven actions motivated either by intrinsic identity or by group dynamics over health and climate risk perceptions in steering diet change dynamics.