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近期,两篇研究论文的发表,使“牛肉”突然成为社会媒体关注的热点。这两篇文章分别调查了畜牧业对全球环境的影响。文章中列举了一些例子,如:“与猪肉和禽肉的生产过程相比,生产牛肉在温室气体排放、氮素和水利用方面的影响更大。”西班牙巴塞罗那分子生物学研究所生理学与分子生物学家Tim Thomson在推特网上发文说:“不应效仿美国人:少吃牛肉,这样你可以减少来自饮食的环境成本。”但是,美国密苏里大学哥伦比亚校区肉牛遗传学家Jared Decker博士同样亦在推特网发文称:与其他工业部门的活动相比,生产牛肉的碳排放量相对更小。他进一步声言:“相比之下,在交通运输与能源系统进行必要的降耗改革难道不更加重要么?”

摘自《自然》杂志 2014年7月31日 第511卷(翻译:李蕊)

http://doi.org/tvw (2014); Proc.NatlAcad. Sci. USA http://doi.org/tvx (2014)


原文:Beef’s big impact on Earth

Socialselection-Popular articles on social media

Beefis suddenly big on social media, thanks to two recent papers investigating theglobal effects of livestock farming. They make the case that beef productionhas a bigger impact on greenhouse-gas emission and on the use of nitrogen andwater than does the production of pork and poultry, for instance. Tim Thomson,a physician and molecular biologist at the Molecular Biology Institute ofBarcelona in Spain, tweeted: “Do not imitate Americans: Eat less beef and youwill mitigate environmental costs of diet.” But Jared Decker, a beef-cattlegeneticist at the University of Missouri in Columbia, tweeted that cattle havea relatively small carbon footprint compared to other industry sectors, adding:“Wouldn’t changing transportation & energy be more important?”


Source:http://doi.org/tvw (2014); Proc. Natl Acad. Sci. USA http://doi.org/tvx (2014)