摘要
采用高分辨率房屋建筑物轮廓栅格数据、城市规划以及百度POI等资料构建了海口市房屋建筑物的使用类型及经济价值分布;基于实地调研的损失数据及参考现有研究,拟合了海口市各类房屋建筑物脆弱性曲线;结合模型模拟的海口市历史台风事件和台风暴雨-洪涝-风暴潮联合概率情景的洪涝淹没数据,开展了海口市台风次生洪涝情景下的房屋建筑物损失评估。研究表明:①高精度的承灾体数据可以实现对单体房屋的损失估算及空间分布规律分析。江东新区、海甸岛以及新埠岛等沿海区域的房屋洪涝灾害暴露度较高,商业用地、工业用地及在建工程等房屋使用类型发生洪涝损失的概率较大。②相同台风暴雨-洪涝-风暴潮重现期水平下,海口市房屋室内财产损失率呈现北高南低的分布格局,损失率较高的区域主要分布海甸岛、新埠岛以及江东新区等南渡江入海口附近。③相同台风暴雨-洪涝-风暴潮重现期水平下,海口市房屋建筑物洪涝损失主要集中在北部沿海及河流沿线,空间分布与洪涝危险性空间分布趋同。
In this paper,we use Basedon data on high-resolution building profile raster,city planning and Baidu POI,building types and economic value distribution in Haikou city is constructed.Based on the losses data from field research and referring to existing studies,vulnerability curves for various types of buildings in Haikou city are fitted.The buildings’internal damage assessment of typhoon-induced floods is carried out by the model-simulated historical typhoon and typhoon rainstorm-flood-storm surge joint flood inundation data in Haikou city.The study shows that:1)Highly precision building type data can support single house’s damage estimation and spatial distribution pattern analysis.The coastal areas such as Jiangdong district,Haidian Island and Xinbu Island have higher exposure to flooding,and the probability of high buildings’interior damage is more significant for commercial building,industrial building,and projects under construction.At the same return period of typhoon rainstorm-flood-storm surge joint flood,2)Haikou’s interior property loss rate presents a distribution pattern of higher in the north and lower in the south.Areas with high loss rates are mainly distributed near the estuary of the Nandu River,such as Haidian Island,Xinbu island and Jiangdong district.And 3)The interior property loss in Haikou city is mainly concentrated on the northern coast and along the Nandu rivers,and the spatial distribution tends to be the same as the flood hazards.
作者
曾鹏
苏朝晖
方伟华
张海霞
余璐
ZENG Peng;SU Zhaohui;FANG Weihua;ZHANG Haixia;YU Lu(Key Laboratory of Environmental Change and Natural Disasters,Ministry of Education,Beijing Normal University,Beijing 100875,China;Faculty of Geographical Science,Beijing Normal University,Beijing 100875,China;State Key Laboratory of Earth Surface Processes and Resource Ecology(ESPRE),Beijing Normal University,Beijing 100875,China;Academy of Disaster Reduction and Emergency Management,Ministry of Emergency Management and Ministry of Education,Beijing 100875,China)
出处
《灾害学》
CSCD
北大核心
2022年第4期155-165,共11页
Journal of Catastrophology
基金
国家重点研发计划资助项目(2017YFA0604903,2018YFC1508803)
南方海洋科学与工程广东省实验室(广州)重大专项(GML2019ZD0601)。
关键词
台风
次生灾害
洪涝灾害
损失评估
室内财产价值
海口市
typhoon
secondary hazards
flood disaster
loss assessment
interior property
Haikou city
