Page 84 - 《水资源与水工程学报》2023年第5期
P. 84
! 34 " ! 5 # & ' ( ) & * + , - Vol.34No.5
2023 $ 10 % JournalofWaterResources&WaterEngineering Oct.,2023
DOI:10.11705/j.issn.1672-643X.2023.05.09
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EFGHI:TV213.4 JK7LM:A JNOI:1672643X(2023)05008008
Evaluationofwatersystem connectivityofsmallwaterbodies
undertheregulationofhydraulicstructures
3
1
2
2
1
GAOYuhui,XUHui,TANGHuayan,LINXiaoming,ZHOUQiang,YANHuaichun 3
(1.CollegeofHydrologyandWaterResources,HohaiUniversity,Nanjing210098,China;2.WaterResources
BureauofLiyangDistrict,ChangzhouCity,Changzhou213300,China;3.SoilandWaterConservation
EcologicalEnvironmentMonitoringStationofJiangsuProvince ,Nanjing210012,China)
Abstract:Inordertoanalyzetheefficiencyofcomprehensiveriverregulationworksonwatersystemcon
nectivityofsmallwaterbodiesinthepolderareasofTaihuBasin,twomorecriterionlayersoflandscape
connectivityandwaterqualityimprovementwereputforwardbasedontheexistingcriterionlayersinclu
dingwatersystempattern,structuralconnectivityandhydraulicconnectivity,duetotheprominentfunc
tionsofsmallwaterbodiesinecosystemprotectionandwaterpurification.Theconventionalindiceswere
modifiedaccordingtotheshapecharacteristicsofsmallwaterbodies ,soastobetterdescribepolymorphic
rivernetworks.Inlightofdifferentwaterflowpathwaysandhydraulicconditionsofsmallwaterbodies
causedbyvariousregulationsofhydraulicstructures,structuralconnectivityandhydraulicconnectivity
werecalculatedseparatelyunderdiverseworkingconditions,andthenweightedbydurationforrelatively
stableannualaverages.Then,thisevaluationsystemofwatersystemconnectivityofsmallwaterbodies
wasappliedtotheconnectivityevaluationoftheTongziRiverinLiyangCitybeforeandafterriverregula
tions.Theresultsshowedthatcomprehensiveriverregulationworkshadasignificanteffectontheim
provementofthewatersystemconnectivity,andtheevaluationsystemcouldreflectwatersystemconnec
tivityofsmallwaterbodiesundercollaborativeoperationsofvarioushydraulicstructuresinareasonably
objectiveandcomprehensiveway.
Keywords:smallwaterbody;watersystemconnectivity;regulationofhydraulicstructure;comprehen
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