台风过程引发洪涝灾害的风险评估--以海南岛为例

Risk assessment of flood disaster trigged by typhoon process:a case study on Hainan Island

海南岛是一个受台风影响频繁的区域,台风过程中的暴雨过程极易引发洪涝灾害。在分析洪涝灾害形成的各主要因子的基础上,提出了基于G IS的台风过程引发海南岛洪涝灾害的评估模型,以台风过程中发生的暴雨的危险性指数、地形因子和社会经济易损为主要指标,得出了海南岛台风过程引发洪灾的风险综合区划图。

Hainan Island is frequently effected by typhoon,and during the typhoon landing,rainstorm is easy to bring about flood disaster.A model for flood risk assessment was put forward based on GIS by study the main factors consisting of rainstorm index,topography and socio-economic vulnerability,which was used to get flood disaster risk zonation of Hainan Island.