Page 110 - 《水资源与水工程学报》2022年第3期
P. 110
!33 " ! 3 # & ' ( ) & * + , - Vol.33No.3
2022 $ 6 % JournalofWaterResources&WaterEngineering Jun.,2022
DOI:10.11705/j.issn.1672-643X.2022.03.14
ôq¬RyÇÆõÒðdö - ÷Ò¦ DOC
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DOC®±WDTUF«ÞñYÖ×。®ºs!?, d - ~>dr DOC!ôg;zs 258.53kt, !ô ;zs
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8IBJK:TV697.3 9;X142 LMNOP:A LQRK:1672643X(2022)03010609
Temporalandspatialdistributioncharacteristicsandfluxesofdissolved
organiccarbonintheupperYellowRiver(Longyangxia-Liujiaxia)
undercascadehydropowerdevelopment
1
2
2
1
1
1
WUWei,WANGJiawei,LIUTing,WANGHao,LIChen,ZHOUXiaode
(1.StateKeyLaboratoryofEcohydraulicsinNorthwestAridRegionofChina,Xi’anUniversityofTechnology,Xi’an710048,China;
2.Hanjiang-to-WeiheRiverValleyWaterDiversionProjectConstructionCo.,Ltd.,ShaanxiProvince,Xi’an710024,China)
Abstract:Aimingattheproblemofriparianbiogenicmaterialcyclesbroughtuponbycascadehydropowerde
velopment ,thecascadehydropowerdevelopmentsectionoftheupperYellowRiver(Longyangxia-Liujiaxia
section ,atotaloffivereservoirs)wasselectedastheresearcharea,anddissolvedorganiccarbon(DOC)as
themainresearchobject.ThedistributioncharacteristicsofDOCandphysicochemicalindicatorswereanalyzed
bysamplingmonitoringmethod ,thentheDOCtransportfluxineachreservoirwasestimatedbasedonthestat
icboxalgorithmmodel.TheresultsshowedthatDOCandconventionalphysicochemicalindicatorspresented
obviousspatiotemporalheterogeneity ,andtheconcentrationofDOCinthefloodseason(5.37-7.00mg/L)
washigherthanthatinthenonfloodseason(2.90-5.56mg/L).Moreover,duetotheverticalwatertem
peraturestratificationofthereservoir,theDOCshowedthecharacteristicsoffluctuatedchangealongtheverti
caldirectionofthewaterdepthinthefloodseason.Duringthesamplingyear ,thetotalinputofDOCinthe
Long-Liusectionwas258.53kt,thetotaloutputwas192.23kt,andtheinterceptionratewas25.6%.The
reservoirswhichplayedtheroleofinterceptionwereLongyangxia ,GongboxiaandLiujiaxia,andtherestwere
alltransporters.
Keywords:dissolvedorganiccarbon(DOC);transportflux;cascadehydropowerdevelopment;theupper
YellowRiver
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