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【正文】 population.The daily water consumption per capita has been increasing from less than m3 in 1959, to more than m3 in 1995, and to more than m3 in 2023 Attribution: Water stress from increased water demand. Irrigation demand approached a limit.p50increase aboutseriousin753droughtrainNCPintostreamflow intoin2023theIndia2023ResearchwithdrawaleMain Water issues: Groundwater depletion Ground fissure resulting from overdraft of groundwater in the North China Plain (in Hebei province）The depth to groundwater was meters in 1978, and has been subsequently reduced to meters in 2023, with an average annual decline rate of meters LongtermofLuanchengPlain),(observedlevelcouplingn(7)SG(滲漏與地下水上升 )； (8)RV(徑流過(guò)程的初損 )(1)PRS(考慮前期土壤水的降水徑流關(guān)系， API模型 )；(3)PRV(降水徑流的初損 )；(5)SVP(水在土壤 植物 大氣系統(tǒng)中的傳輸或 SAPC系統(tǒng) )；(7)GSP(三水轉(zhuǎn)化 )；(9)VSG(植物對(duì)土壤水與地下水的影響 )；(3)VRSGinteractionandefficiencyRs:radiationRHconductanceRootRootrootsRootSoilwatertransferGroundwaterGroundwaterRstemRrootRleafAtmosphereSPAC systemVarieties heredity Reduceofsavingindexsoil 4050mm；Summer.interactioncreatingConjunctivesavingbiologicalbreedingcanalpressureirrigationRationalfilmIntermittent2. Agriculture uses the most amount water dominant consumer。Major4. To establish marketing mechanisms for watersaving agriculture and to promote the industrialization in watersaving facilities。km3 Strategic measures:1.understanding4. Water saving is plex systems needs multidisciplinary technologies。flow)Alternativesmallsurfaceproof)WateralternativeconservancyFertilizeragriculturalagronomicbrackishagricultureSoilcancanofindexMatureinterfacevarioustheandcharactersSoilpotentialSoillengthleavesVegetationhumidityDifferencerateDI:grainhydrostates)。(five(考慮地下水影響的 SAPC系統(tǒng) )。(植物與土壤對(duì)降水徑流影響 )；(10)VSR(植物對(duì)土壤入滲與徑流的影響 )。(8)GVR(地下水與地表水關(guān)系的植物影響 )；(6)GVP(地下水 植物 大氣系統(tǒng)，地下水垂直排泄 )；(4)PSG(降水入滲補(bǔ)給地下水 )；(2)PRG(三水轉(zhuǎn)化 )；n =3， bination = 10：(9)GV(植物利用地下水 )； (6)RG(地表水地下水關(guān)系 )=interaction(交換的系統(tǒng)耦合 )m: Elements = hydrostate number or subsystem numbern: bination = number of coupling subsystemsm(n = 2), matrix:seasonGroundwater level desceningObserved at Luancheng stationSummary: to save groundwater in the NCP is very urgent p Agricultural watersaving: A highlightWatersaving is core of rational water management? To adapt to climate change ? To realize highest potential use of available water? To increase water economy with high benefit? To control blind development of regional water resources and promote water demand management ? To maintain ecoenvironment against degradation ? To foster participation management institutionsWatersaving—”Killing Many Birds With One Stone”！Water saving is the best for adaptation to climate change impact on water resources p Discussions of some ideas of watersaving: water cycle / five water interactions 2. interface control of water fluxes3. agricultural watersaving system ++1 1098765432FiveChineseGlobalinbeen1972MinistrytoinWadaEastUS,aboutkm3dramatically,indramaticwaterChinaThe distribution of Drought in the sprin
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