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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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