Page 65 - 《水资源与水工程学报》2023年第5期
P. 65
! 34 " ! 5 # & ' ( ) & * + , - Vol.34No.5
2023 $ 10 % JournalofWaterResources&WaterEngineering Oct.,2023
DOI:10.11705/j.issn.1672-643X.2023.05.07
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EFGHI:X52 JK7LM:A JNOI:1672643X(2023)05006109
Responseofnitrogenandphosphoruspollutionloadtodifferentland
usepatternsinTaolinkouReservoirbasin
1
1
1
1
2
YANGNijuan,WANGXiaoyun,LIJianzhu,ZHANGTing,FENGPing
(1.StateKeyLaboratoryofHydraulicEngineeringSimulationandSafety,TianjinUniversity,Tianjin300350,China;
2.ChinaWaterResourcesBeifangInvestigation,Design&ResearchCo.,Ltd.,Tianjin300222,China)
Abstract:Nonpointsourcepollutionhasbecomethemaintargetofwaterpollutionpreventionandcon
trol ,thepolluantlossiscloselyrelatedtothelandusepatterns.Inthisstudy,thenonpointsourcepol
lutionloadinTaolinkouReservoirbasinwassimulatedbySWATnonpointsourcepollutionmodel.The
effectsofdifferentlanduseonnitrogenandphosphoruslossrateswerestudied ,andthechangesofnon
pointsourcepollutionloadlossundertwolandusepatternsin2014and2019werequantitativelyana
lyzed.TheresultsshowedthattheSWATnonpointsourcepollutionmodelwassuitableforthesimulation
ofnonpointsourcepollutioninthebasin.Inasinglelandusetype ,thepollutantlossraterankedasfol
lows:cultivatedland( Ⅱ) >grassland( Ⅲ) >residentialland( Ⅷ) >woodland( Ⅰ).Thecombi
nationofwoodlandcouldeffectivelyreducetheloadlossrateofsubbasins,comparedwithanysingle
landuse.Thepollutionyieldperunitareaofdifferentlandusevariedgreatly,thatofwoodlandwasthe
lowest ,whereasthatofcultivatedlandwasthehighest.Comparedwith2014,theareaofwoodlandin
creasedandtheareaofcultivatedlandandgrasslanddecreasedin2019 ,andtheoutputofTNandTP
loaddecreasedby34.43% and23.75%,respectively.Theresultsofthisstudycanprovideatechnical
supportforthewaterenvironmentpollutionmanagementoftheTaolinkouReservoirbasin.
Keywords:nonpointsourcepollution;pollutionloadofnitrogenandphosphorus;landusepattern;
pollutionloadloss;SWATmodel;TaolinkouReservoirbasin
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