Regional Institute for Population Studies, University of Ghana, Legon, Ghana; Climate Change Working Group, University of Ghana, Legon, Ghana; School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Sci Total Environ. 2019 Mar 15;656:732-739. doi: 10.1016/j.scitotenv.2018.11.333. Epub 2018 Nov 23.
There are heightened debates on limited opportunity of the global adaptation policy goals of the Paris Climate Agreement (PaCA) to match efforts at mitigation and adaptation. This has been attributed partially to the overstatement in Article 7 Paragraph 4 of the PaCA that "greater levels of mitigation" reduces the cost of additional adaptation through mitigation Co-benefits. Therefore, the paper explores how Article 7 of the PaCA partially faults the natural synergy between mitigation and adaptation to equally reduce aggregate emission, although mitigation could help reduce adaptation to physical exposure. Co-benefits are non-climate ancillary benefits from emission reduction that is human-centered. Article 7 of the PaCA overtly favors efforts at mitigation compared to adaptation, yet how much mitigation benefits match adaptation cost including human dimension issues remain speculative and also constrained emission leakages. Thus, the sole attribution of avoiding additional adaptation cost to increased mitigation efforts is far from the reality as adaptation could offset its own additional cost through benefits that reduce emissions, and synonymous to mitigation Co-benefits. For example, the adaptation intentions of ecosystem-based adaptation (Eba), urban NEXUS, integrated water resources management (IWRM) and climate smart agriculture (CSA) in aspects of biodiversity conservation, energy redistribution from human activity, water purification and nutrient recycling are also major sources of emission sink. Therefore, the Article 7 of the PaCA could be enhanced by broadening the definition of Co-benefits to reflect the two-way equity-bound efforts at mitigation and adaptation towards reduced emission leakages and additional adaptation cost.
全球适应政策目标与《巴黎气候协定》(PaCA)的减排努力之间的适应机会有限,这引发了激烈的争论。这部分归因于 PaCA 第 7 条第 4 款的夸大表述,即“更大程度的减排”通过减排共同效益降低了额外适应的成本。因此,本文探讨了 PaCA 第 7 条如何部分破坏了减排和适应之间的自然协同作用,以同等程度减少总排放量,尽管减排可以帮助减少对物理暴露的适应。共同效益是减排带来的以人为中心的非气候附带效益。PaCA 第 7 条明显偏向于减排努力,而不是适应,但减排带来的好处与包括人类维度问题在内的适应成本相匹配的程度仍存在推测性,也受到排放泄漏的限制。因此,将避免额外适应成本完全归因于增加的减排努力,与现实相去甚远,因为适应可以通过减少排放的效益来抵消其自身的额外成本,这与减排共同效益是同义词。例如,基于生态系统的适应(Eba)、城市 Nexus、综合水资源管理(IWRM)和气候智能农业(CSA)在生物多样性保护、人类活动产生的能源再分配、水净化和养分回收等方面的适应意图,也是排放汇的主要来源。因此,可以通过扩大共同效益的定义来增强 PaCA 第 7 条,以反映减排和适应方面的双向公平努力,以减少排放泄漏和额外适应成本。