基于PSR-TOPSIS模型和水系演變的湘江流域洪澇韌性評價及障礙因子分析

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Evaluation of Flood Resilienceand Analysis of Obstacle Factors in Xiangjiang River Basin BasedonPSR-TOPSISModelsandRiverSystemEvolution

SUN Ruisi'， YANG Liu 1，2，3* ，F(xiàn)ENG Chang1，23，ZHOU Jialong'，LI Na'，SHI Yabo1 （1.CollegofGeogaphyandTourism，HengangNoralUniversity，Hengyang4102，China;2.HunanEnvironmentalEducatio andSustainableDevelopmentResearch Base，Hengyang 421OO2，China;3.Hengyang Base，InternationalCentreonSpace Technologies for Naturaland Cultural Heritage （HIST）under the Auspices of UNESCO，Hengyang 421002， China）

Abstract：Flooddisastersareoneofthemostsignificantnaturalhazardsthreateningthesustainabledevelopmentofcities，and enhancingurbanfloodresilienceiscrucialforachievingsustainabledevelopment.Fromaresilienceperspective，thisstudy constructedacomprehensivefloodresilienceevaluationindicatorsystembasedonthepressure-state-response（PSR）frameworkby takingintoaccount thecomplexrelatioshipbetweenwatersystemindicatorsandfloodresilienceacross diferentvalueranges.The systemwasdevelopedfrommultipledmesions，incudingnatural，socialndonomicfactors.Byakingtheangingirsin asthestudyarea，thetechniquefororderpreferencebysimilaritytoidealsolution（TOPSIS）combinedwiththeentropyweightmethod wasemployedtoquantifyfloodresilienelevels，whiletheobstacledegremodelwasusedtoidentifykeyconstraitsafectinflood resilience. The results indicate that： ① The overallflood resilience of the basin shows a fluctuating upward trend，with an increase of 77.22% during the study period. ② The growth rates of resilience vary significantly among cities within the basin.As the capital city ofHunanProvince，Changshahasexperiencedrapideconomicdevelopment，resultinginthehighest increaseinfloodresilience， transitioningfromalowertoahigherresilienelevel.Incontrast，Loudi Cityhasshonthelowestprogressinflodresilieneaong all the cities. ③ Theprimary obstacles hindering the improvement offloodresilience are predominantlyconcentrated in the response andstatesubsystems，icludingtotalwagesofon-the-jobemployees，reservoircapacityndlengthoffodcontrolembankmets.In thefuture，enhancingfloodresiliencesouldfocusonindicatosofthestateandresponsesubsytems，suchastheotalwagesofoth jobemployees，eservoircapacityandthelengthoffloodcontrolmbankments.Thisstudycanprovidevaluablereferencesforiver systemprotection，floodriskmanagement，andurbanresilienceconstructionintheXiangjiangRiverBasinandothersiilargios. Keywords： flood resilience; river system evolution; TOPSIS; obstacle factor; Xiangjiang River Basin

洪澇災(zāi)害作為全球范圍內(nèi)最為頻繁和破壞性極強的自然災(zāi)害之一，對人類社會和自然環(huán)境構(gòu)成了嚴重威脅[1-3]。（剩余10179字）