Page 95 - 《水资源与水工程学报》2024年第2期
P. 95

!35 "!2 #                         & ' ( ) & * + , -                               Vol.35No.2
               2024 $ 4 %               JournalofWaterResources&WaterEngineering                 Apr.,2024

            DOI:10.11705/j.issn.1672-643X.2024.02.10


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                             Evolutioncharacteristicsofrivernetworkpatternin
                                      Xi’anCityunderrapidurbanization

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                      XIEYue,JIANGRengui,XIEJiancang,ZHAOYong,LIFawen,ZHUJiwei
                  (1.StateKeyLaboratoryofEcohydraulicsinNorthwestAridRegionofChina,Xi’anUniversityofTechnology,Xi’an
                  710048,China;2.StateKeyLaboratoryofSimulationandRegulationofWaterCycleinRiverBasin,ChinaInstituteof
                       WaterResourcesandHydropowerResearch,Beijing100038,China;3.StateKeyLaboratoryofHydraulic
                                EngineeringSimulationandSafety ,TianjinUniversity,Tianjin300072,China)
               Abstract:Inordertooptimizethelayoutofrivernetwork,itisnecessarytoclarifytheimpactofurbaniza
               tionontherivernetwork.Basedonremotesensingimagesandrivernetworkdataofthreetimeperiods
               (2000,2010and2020),thespatialandtemporalevolutioncharacteristicsoftherivernetworkinXi’an
               Citywasanalyzedfromrivernetworkquantitativeandstructuralperspectivestorevealthequantitativerela
               tionshipbetweenurbanizationlevelandrivernetworkcharacteristics.Theresultsshowthattheareaofcon
               structionlandhasbeenincreasingoverthepast20years ,accountingfor13.25% ofthetotalareaofthe
               Xi’anCityin2020,andtheprocessofurbanizationhaschangedfromtheacceleratedstageofdevelopment
               tothematurestage.ThequantitativeparametersoftherivernetworkinXi ’anCityshowedacontinuousde
               creasingtrend ,withthedensityoftherivernetworkandwatersurfaceratiodecreasingby26.47% and
               20.69%,respectively.Thestructuralcharacteristicsofthenetworkincludingriverdevelopmentcoefficient
               andrivernetworkcomplexityshowedanincreasingandthendecreasingtrend ,butoverallattenuationtrend,
               withanattenuationrateof19.87% and17.01%,respectively.Inregionswithdifferentratesofurbaniza
               tion ,thespatialdistributionoftherivernetworkpatternvariedsignificantly,butunderthejointactionof
               naturalfactorsandhumanactivities ,thestabilitydegreeoftheoverallrivernetworkstructureinXi’ancity

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