海洋科学2023，Vol.47Issue(11)：12-23,12.DOI:10.11759/hykx20220824001
风暴潮灾害情景下海岸带暴露指数时空演变研究——以福建省东山湾为例
Spatiotemporal evolution of the exposure index in coastal zones from the context of storm surge disaster:Dongshan Bay,Fujian Province
摘要
Abstract
The exposure index(EI)indicates the potential risk of possible natural disasters to an ecosystem.This study analyzes the EI and its spatiotemporal evolution based on storm surge disasters.To this end,we selected Dongshan Bay,Fujian Province,as the study area and used a combination of remote-sensing images,the digital elevation model,as well as the wind and wave data.The analysis is based on the EI evaluation model,and the fol-lowing results are obtained from the study.(1)In the past decade,the EI of Dongshan Bay has been observed to decrease;the fraction of regions with"medium-high"potential risk decreased from 67.13%to 59.06%.Further,the potential risk of coastal zones decreased in the face of extreme weather conditions,such as storm surge disasters.Changes in the geomorphologic type and shoreline spatial position are primarily responsible for fluctuations in the EI in the coastal zone of Dongshan Bay.(2)Based on the degree of the potential risk and utilization status,ecol-ogically sensitive regions in the coastal zone are identified and evaluated.This study thus proposes targeted coun-termeasures for the development and risk prevention to support spatial planning and scientific delineation of eco-logical protection and restore coastal zones.The results could considerably facilitate the overall land-sea planning and sustainable development of coastal zones.(3)Finally,this study proposes a technical route and framework for long-term EI research,providing new prospects for assessing the vulnerability and resilience of coastal zones.The proposed methodology,based on deep learning in coastal zones,is broadly applicable in the field of disaster and disaster simulation.关键词
暴露指数模型/风暴潮灾害/生态环境潜在风险/海岸带/东山湾Key words
exposure index model/storm surge disaster/potential risk of ecological environment/coastal zone/Dongshan Bay分类
海洋科学引用本文复制引用
王超,黄发明,陈华香,殷飞笺,施荣灿,杨黎静..风暴潮灾害情景下海岸带暴露指数时空演变研究——以福建省东山湾为例[J].海洋科学,2023,47(11):12-23,12.基金项目
中央级公益性科研院所(自然资源部第三海洋研究所)基本科研业务费专项(海三科2022016)The Project Sponsored by the Scientific Research Foundation of Third Institute of Oceanography,MNR,No.2022016 （自然资源部第三海洋研究所）
