How Can Cities Respond to Flood Disaster Risks - Case Study

How Can Cities Respond to Flood Disaster Risks - Case Study

How Can ​Cities Respond ​to Flood ​Disaster Risks ​under Multi-​Scenario ​Simulation? A ​Case Study of ​Xiamen, China ​ Authors  : Yijun ​Shi,1, ​Guofang Zhai,​ Shutian ​Zhou, ​Yuwen Lu, ​Wei Chen, ​Jinyang Deng ​ Abstract: Flood ​disasters often ​have serious ​impacts on ​cities. ​Disaster ​prevention and ​mitigation ​schemes for ​flood disasters ​must be based ​on risk ​assessment. We ​constructed an ​indicator ​system for ​flood disaster ​risk assessment ​from the ​aspects of ​hazard factors, ​sensitivity to ​the environment,​ disaster ​vulnerability, ​flood disaster ​prevention, and ​resilience. ​Then we add the ​precipitation ​factor as a ​scenario ​parameter to ​the assessment ​of flood ​disasters, in ​order to assess ​the flood ​disaster risk ​under annual ​average ​precipitation ​scenarios, ​multi-year ​flood season ​average ​precipitation ​scenarios, and ​large typhoon ​precipitation ​scenarios. ​Xiamen is one ​of the cities ​with more ​serious flood ​disasters. We ​select Xiamen ​as an example ​and refer to ​existing ​indicators of ​flood disaster ​assessment. The ​results show ​that: (1) the ​coefficient of ​variation of ​flood disasters ​in Xiamen under ​the impact of ​large-scale ​typhoon ​precipitation ​is large; (2) ​the drainage ​and flood ​control ​capacity of ​Xiamen is ​generally ​insufficient, ​and the risk in ​the old city is ​high; (3) there ​are many flood-​prone locations ​in Xiamen. ​Underpass ​interchanges, ​underground ​spaces, and ​urban villages ​have become the ​new key areas ​for flood ​control; and (4)​ the flood risk ​in the northern ​mountainous ​areas of Xiamen ​is the highest. ​Based on the ​assessment ​results, we ​further ​delineate the ​urban flood ​control zones ​and propose ​corresponding ​countermeasures.​ The study ​expands the ​research on ​flood disaster ​risk assessment,​ and also ​provides ​reference for ​relevant cities ​to deal with ​flood disasters.​ Keywords: flood ​disaster, risk ​assessment, ​multi-scenario ​simulation, ​response ​strategies, ​Xiamen city ​ Published in ​International ​Journal of ​Environmental ​Research and ​Public Health, ​February 2019 ​ DOI  : 10.​3390/ijerph16040618 ​ Source: PMC