Human impacts on planetary boundaries amplified by Earth system interactions
Human impacts on planetary boundaries amplified by Earth system interactions
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DOI：
10.1038/s41893-019-0454-4
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发表时间：
2020-02-01
影响因子：
27.6
通讯作者：
Rockstroem, Johan
中科院分区：
文献类型：
--
作者：
Lade, Steven J.;Steffen, Will;Rockstroem, Johan
行星边界框架展示了人类在一系列危及地球系统支持人类能力的环境问题上的全球综合表现的“行星仪表板”。虽然这一框架具有很大的影响力，但其在可持续性治理方面的应用存在一个重大缺陷，即它目前未能说明与一个行星边界有关的影响如何影响其他行星边界的状况。在这里，我们调查并暂时量化了以行星边界为代表的地球系统过程之间的相互作用，并研究了它们对可持续性治理的影响。我们确定了行星边界之间相互作用的密集网络。由此产生的级联和反馈主要放大了人类对地球系统的影响，从而缩小了未来人类对地球系统影响的安全操作空间。我们的研究结果表明，对地球系统动力学的综合理解对于走向可持续发展的未来至关重要。行星边界之间相互作用的级联效应和反馈缩小了最初通过单独分析每个边界确定的安全操作空间。
The planetary boundary framework presents a 'planetary dashboard' of humanity's globally aggregated performance on a set of environmental issues that endanger the Earth system's capacity to support humanity. While this framework has been highly influential, a critical shortcoming for its application in sustainability governance is that it currently fails to represent how impacts related to one of the planetary boundaries affect the status of other planetary boundaries. Here, we surveyed and provisionally quantified interactions between the Earth system processes represented by the planetary boundaries and investigated their consequences for sustainability governance. We identified a dense network of interactions between the planetary boundaries. The resulting cascades and feedbacks predominantly amplify human impacts on the Earth system and thereby shrink the safe operating space for future human impacts on the Earth system. Our results show that an integrated understanding of Earth system dynamics is critical to navigating towards a sustainable future.The cascading effects and feedbacks of interactions between planetary boundaries shrink the safe operating space originally identified by analysing each boundary separately.