基于能值理论的洪涝灾害脆弱性评估

在搜集整理 2015 年郑州市暴雨洪涝资料的基础上, 从生态学的角度, 运用能值分析方法评估区域洪涝灾害脆 弱性。进而使用能值作为统一的度量尺度, 以能值评价的结果和表征区域洪涝灾害脆弱性的能值指标为基础, 借助 地理信息系统( GIS) 对郑州市洪涝灾害的脆弱性进行空间差异分析。结果表明郑州市洪涝灾害脆弱性的空间分布 差异明显, 大致呈现从中部向四周递减的趋势。新密市的脆弱性最高, 其次是市区, 脆弱性最低的是新郑市。结论 表明, 在暴露度相同的条件下, 有效提高系统的适应能力是降低脆弱性的关键。 On the basis o f t he rainsto rm and f loo d dat a of Zhengzho u in 2015, w e applied the emerg y analysis metho d to evaluat e the regional v ulner ability to floo d disasters fr om the ecolo gica l perspectiv e. The emer gy w as then considered as a normalized ba2 sis. Based o n the results of emer g y ev aluatio n and the emer gy index r epr esenting t he reg io nal v ulnerability to floo d disasters, w e used t he g eo gr aphic info rmatio n sy stem ( GIS) to analyze the spat ial difference o f vulnerability to flo od disasters in Zheng zhou. Results show ed t hat t her e w ere obvio us differences in the spatia l distribution of vulnerability to floo d disasters. The v ulnerabili2 ty of Xinm i was the hig hest and that o f Xinzheng w as the low est. I n a who le, the vulnerability to flo od disasters in Zhengzho u City tended to decrease from t he middle to the peripher y. Im pr oving the ada ptability of the sy stem effectively is the key to re2 ducing the vulnerability . 国家自然科学基金重点基金( 51739009)