Assessment of urban flood vulnerability using the social-ecological-technological systems framework in six US cities
Assessment of urban flood vulnerability using the social-ecological-technological systems framework in six US cities
复制标题
DOI：
10.1016/j.scs.2021.102786
复制
发表时间：
2021-03-08
影响因子：
11.7
通讯作者：
Herreros-Cantis, Pablo
中科院分区：
文献类型：
--
作者：
Chang, Heejun;Pallathadka, Arun;Herreros-Cantis, Pablo
随着城市人口在整个世纪继续增长，预计将有更多的人面临气候变化引发的极端事件的风险。为了研究城市洪水的复杂性，本研究应用了一个相互关联的社会生态技术系统（SETS）脆弱性框架，开发了一个城市洪水脆弱性指数为美国六个城市。选择的指标，以反映和说明暴露，敏感性和适应能力，以洪水为三个领域的SETS。我们量化了18个指标，并在人口普查区块组水平上按城市500年的洪泛区面积将其标准化。每个SETS域都以不同的方式确定了洪水脆弱地区的集群，有些地区在一个以上的域中容易受到洪水的影响。通过考虑社会、生态和技术脆弱性以及多种脆弱性来源共存的热点，提供结果以支持减少洪水风险的决策。空间上明确的城市SETS洪水脆弱性框架可以转移到其他地区面临挑战性的城市洪水和其他类型的环境灾害。绘制SETS洪水脆弱性有助于揭示复杂的SETS相互作用的交叉点，并为决策提供信息，以建设面对极端事件和气候变化影响的更具弹性的城市。
As urban populations continue to grow through the 21st century, more people are projected to be at risk of exposure to climate change-induced extreme events. To investigate the complexity of urban floods, this study applied an interlinked social-ecological-technological systems (SETS) vulnerability framework by developing an urban flood vulnerability index for six US cities. Indicators were selected to reflect and illustrate exposure, sensitivity, and adaptive capacity to flooding for each of the three domains of SETS. We quantified 18 indicators and normalized them by the cities' 500-yr floodplain area at the census block group level. Clusters of flood vulnerable areas were identified differently by each SETS domain, and some areas were vulnerable to floods in more than one domain. Results are provided to support decision-making for reducing risks to flooding, by considering social, ecological, and technological vulnerability as well as hotspots where multiple sources of vulnerability coexist. The spatially explicit urban SETS flood vulnerability framework can be transferred to other regions facing challenging urban floods and other types of environmental hazards. Mapping SETS flood vulnerability helps to reveal intersections of complex SETS interactions and inform policy-making for building more resilient cities in the face of extreme events and climate change impacts.