湘江流域中游洪水灾害风险评估及驱动力分析

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中图分类号：TV122 文献标识码：A 文章编号：1001-9235（2025）08-0013-10

Flood Risk Assessment in Midstream Xiangjiang River Basin and Its Driving Force Analysis

XIANG Jin YANG Liu   ， FENG Chang ， SUN Ruisi ， LIU Chang '，LYU Ling

（1.Colegeofoaphdousm，HngangalUvesityngang4a;2etioalCereSce TechnologiesforNaturalandCulturalHeritage（HST）undertheAuspicesofUNESCO，HengyangBase，Hengyang4202Chia; 3.Hunan EnvironmentalEducation and Sustainable Development Research Base，Hengyang 4210o2，China; 4.Hengyang Hydrology and Water Resources Survey Bureau of Hunan Province， Hengyang 421o99， China）

Abstract：InodertooreaccuratelyandcarefullevaluatetheimpactofoodriskiemidstreamoftheXiangjiangRiveiret fromthetraditioalflodiskassessmentsystem，thisstudyconstructedafour-dimensionalfloodriskasessmentsystemcosidering thecomprehensiveindexoftheriversystemandadoptedtheobjectiveentropyweightmethod.Thestudyevaluatedandverifiedthe systemfromfourdimensionsofdisaster-inducingfactors，disaster-inducingenvironment，disaster-affctedbodyanddisaster preventionandreductioncapabilityAgeographicdetectorbasedonoptimalparameterswasintroducedtodetecthedrivingfactorsof flood risk level in the midstream of the Xiangjiang River. ① The flood risk evaluation based on the comprehensive index of the river systemshows thatthehigh-riskareasinthestudyareaare mainlyinHengyangCitySpatialy，hefloodriskinthemidstreamofthe Xiangjiang River gradually increases from the east and south to the west and north. ② The flood assessment system considering the comprehensiveindexof teriversystecansientificallandaccuratelyreflectthfloodriskevelinthemidstreamofteXiagjiang River，andtheesultsofquantitativeresearhhavegoodreliabilityfterverification，rovidingientificsupportforfoodontroland disasterreductionin thebasin. ③ Fromtheperspective of independent factors，the driving factors offlood risk level inthe midstream oftheXiangjiangRiveraremostafectedbyvulnerabiltyandsensitivityindexes.Intermsofinteraction，theindexfactorsshow significant two-factor enhancement results after interaction.

Keywords： riversystemevolution;floodrisk;geographicdetector; entropyweight method; midstreamof Xiangjiang River

洪水灾害是全球范围内频繁发生、损失严重且影响巨大的自然灾害之一[1-3]。（剩余12814字）