Global human-made mass exceeds all living biomass
Global human-made mass exceeds all living biomass
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DOI：
10.1038/s41586-020-3010-5
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发表时间：
2020-12-09
期刊：
影响因子：
64.8
通讯作者：
Milo, Ron
中科院分区：
文献类型：
--
作者：
Elhacham, Emily;Ben-Uri, Liad;Milo, Ron
随着时间的推移，对全球总生物量（所有生物的质量）和人为质量（人类制造的无生命物体的质量）的估计表明，我们大致处于人为质量超过总生物量的时间点。人类已成为塑造地球面貌的主导力量(1-9)。一个新出现的问题是人类活动的总体物质产出与总体自然生物量相比如何。在这里，我们量化了人造质量（称为“人为质量”），并将其与地球上的总生物量进行比较，后者目前约为 1.1 太吨(10,11)。我们发现地球正好处于交叉点；到 2020 年（+/- 6），人类活动总量大约每 20 年翻一番，将超过全球所有生物量。平均而言，全球每个人每周产生的人为质量超过其体重。这种对人类事业的量化为人类引发的人类世时代提供了基于大众的定量和象征特征。
Estimates of global total biomass (the mass of all living things) and anthopogenic mass (the mass embedded in inanimate objects made by humans) over time show that we are roughly at the timepoint when anthropogenic mass exceeds total biomass.Humanity has become a dominant force in shaping the face of Earth(1-9). An emerging question is how the overall material output of human activities compares to the overall natural biomass. Here we quantify the human-made mass, referred to as 'anthropogenic mass', and compare it to the overall living biomass on Earth, which currently equals approximately 1.1 teratonnes(10,11). We find that Earth is exactly at the crossover point; in the year 2020 (+/- 6), the anthropogenic mass, which has recently doubled roughly every 20 years, will surpass all global living biomass. On average, for each person on the globe, anthropogenic mass equal to more than his or her bodyweight is produced every week. This quantification of the human enterprise gives a mass-based quantitative and symbolic characterization of the human-induced epoch of the Anthropocene.