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Formationmechanism andevaluationmethodofagriculturewater - saving
potentialinirrigatedoasisinaridregions
1,3
1
1
1,2
1
ZHAIJiaqi,ZHAOYong,LIUKuan ,DONGYiyang ,LIXing
(1.ChinaInstituteofWaterResourcesandHydropowerResearch,StateKeyLaboratoryofSimulationand
RegulationofWaterCycleinRiverBasin ,Beijing 100038,China;
2.StateKeyLaboratoryofHydraulicEngineeringSimulationandSafety,TianjinUniversity,Tianjin 300072,China;
3.ScienceandTechnologyResearchInstitute,ChinaThreeGorgesCorporation,Beijing 100038,China)
Abstract:Theagriculturalwater - savingpotentialanditsscaleeffectsareamongthekeyconcernsinirrigated
oasesofaridregions,whicharecrucialforoasisagriculturalproduction,efficientutilizationofwaterresources,
andecologicalhealth.Toaddressthecalculationofagriculturalwater - savingpotentialandtheunclearformation
mechanismofscaleeffects ,thispaperexpoundstheconceptsandconnotationsofwaterintake - basedwater - saving
andwaterconsumption - basedwater - savingandproposesthatthewater - savingpotentialshouldnotignoretheeco
logicalwaterconsumptionandbenefitssupportedbyirrigationwateroverflow.Inaddition ,thisstudyalsoanalyzes
thetransformationandconsumptionmechanismofirrigationwaterinsideandoutsidethefarmlandinthearidirriga
tionoasisfromtheperspectiveofthewatercycle.Itevaluatestheinfluencemechanismsofdifferentwater - saving
measuresonthewatercycleprocesses,andrevealsthewatercyclemechanismsandrelatedecosystemresponsebe
hindthescaleeffectsofagriculturalwater - saving.Therefore ,onthebasisofthistheory,thecalculationmethods
ofagriculturalwater - savingpotentialatdifferentstagesandscalesareputforward,andthetransformationrelation
shipandtransformationtermsofagriculturalwater - savingatdifferentscalesofplant - field - irrigation - oasisareana
lyzed.Finally ,basedonthewatercyclemodel,aquantitativeevaluationandcalculationmethodofdifferentwater -
savingpotentialofirrigationoasisisputforward ,whichtakesvegetationhealth,riverandlakestabilityandwater -
saltbalanceasecologicalhealthconstraints.Thisstudyprovidesnewideasandtechnicalmethodsforscientifically
evaluatingagriculturalwater - savingpotentialanditsimpactsfromtheglobalperspectiveofoases.
Keywords:agriculturalwater - savingpotential;waterintake - basedwater - saving;waterconsumption - based
water - saving ;scaleeffects;watercyclemodel;ecologicalhealththreshold
(责任编辑:耿庆斋)
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