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Guiding urban water management towards 1.5 °C
npj Clean Water ( IF 11.4 ) Pub Date : 2021-06-24 , DOI: 10.1038/s41545-021-00126-1
Simon Parkinson

Reliable access to clean and affordable water is prerequisite for human well being, but its provision in cities generates environmental externalities including greenhouse gas (GHG) emissions. As policy-makers target opportunities to mitigate GHGs in line with the Paris Agreement, it remains vague how urban water management can contribute to the goal of limiting climate warming to 1.5 °C. This perspective guides policy-makers in the selection of innovative technologies and strategies for leveraging urban water management as a climate change mitigation solution. Recent literature, data and scenarios are reviewed to shine a light on the GHG mitigation potential and the key areas requiring future research. Increasing urban water demands in emerging economies and over-consumption in developed regions pose mitigation challenges due to energy and material requirements that can be partly offset through end-use water conservation and expansion of decentralized, nature-based solutions. Policies that integrate urban water and energy flows, or reconfigure urban water allocation at the river basin-level remain untapped mitigation solutions with large gaps in our understanding of potentials.



中文翻译:

引导城市水资源管理迈向 1.5°C

可靠地获得清洁且负担得起的水是人类福祉的先决条件,但在城市中提供水会产生环境外部性,包括温室气体 (GHG) 排放。随着政策制定者根据《巴黎协定》寻找减少温室气体的机会,城市水资源管理如何有助于将气候变暖限制在 1.5°C 的目标仍然模糊不清。这一观点指导政策制定者选择创新技术和战略,以利用城市水资源管理作为缓解气候变化的解决方案。回顾最近的文献、数据和情景,以阐明温室气体减排潜力和需要未来研究的关键领域。新兴经济体不断增加的城市用水需求和发达地区的过度消费带来了缓解挑战,因为能源和材料需求可以通过最终用水保护和分散的、基于自然的解决方案的扩展来部分抵消。整合城市水和能源流动或在流域层面重新配置城市水分配的政策仍然是未开发的缓解解决方案,我们对潜力的理解存在很大差距。

更新日期:2021-06-24
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