Economic analysis of wider benefits to facilitate SuDS uptake in London, UK
Economic analysis of wider benefits to facilitate SuDS uptake in London, UK
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DOI：
10.1016/j.scs.2016.10.002
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发表时间：
2017
影响因子：
11.7
通讯作者：
Juan Ossa-Moreno;Karl M. Smith;A. Mijić
中科院分区：
文献类型：
--
作者：
Juan Ossa-Moreno;Karl M. Smith;A. Mijić
通过可持续城市排水系统（SuDS）进行城市水资源管理已在世界各地的城市中成功应用。事实证明，该基础设施是管理洪水风险的一种具有成本效益的解决方案，同时还能带来更广泛的利益。尽管它们的技术性能，大规模的SuDS在许多地方的吸收一直很慢，主要是由于工程领域以外的原因。英格兰和威尔士的情况就是如此，在那里，SuDS的实施尚未充分发挥其潜力。本文通过对所有效益（即减少洪水和更广泛的效益）的经济评估，探讨了SuDS改造在管理集水区城市基础设施环境风险方面的战略作用。在诱饵溪集水区在伦敦，英国，被用作一个案例研究。平均年效益被用来货币化的价值，在减少地面洪水风险的SuDS，而价值转移的方法被用来评估更广泛的利益。据发现，通过包括后者，其经济可行性大大提高。本文还展示了如何在多个利益相关者之间分配投资，突出每个利益相关者所获得的利益。最后，建议有关的激励措施和政策，以提高吸收的SuDS。在规划阶段，提出的SuDS制图和经济评估方法可用于世界各地的城市，只要一般原则适应当地情况。
Urban water management via Sustainable Urban Drainage Systems (SuDS) has been successfully applied in cities worldwide. This infrastructure has proven to be a cost efficient solution to manage flood risks whilst also delivering wider benefits. Despite their technical performance, large-scale SuDS uptake in many places has been slow, mostly due to reasons beyond the engineering realm. This is the case of England and Wales, where the implementation of SuDS has not reached its full potential. This paper investigates the strategic role of SuDS retrofit in managing environmental risks to urban infrastructure at a catchment level, through an economic appraisal of all benefits (i.e. flood reduction and wider benefits). The Decoy Brook catchment in London, UK, was used as a case study. Average Annual Benefits were used to monetise the value of SuDS in reducing surface flood risk, whilst a Value Transfer approach was used to appraise wider benefits. It was found that by including the latter, their economic feasibility improves considerably. This paper also shows how to split the investment amongst multiple stakeholders, by highlighting the benefits each one derives. Finally, recommendations regarding incentives and policies to enhance the uptake of SuDS are given. The proposed methodology for SuDS mapping and economic appraisal in the planning phase can be used in cities worldwide, as long as general principles are adapted to local contexts.