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《estimation of irrigation requirement for sustainable water resources reallocation in north china》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在工程資料-天天文庫(kù)。
1、AgriculturalWaterManagement97(2010)1711–1721ContentslistsavailableatScienceDirectAgriculturalWaterManagementjournalhomepage:www.elsevier.com/locate/agwatEstimationofirrigationrequirementforsustainablewaterresourcesreallocationinNorthChinaYanminYang,YonghuiY
2、ang?,JuanaPaulMoiwo,YukunHuKeyLaboratoryofAgriculturalWaterResources,HebeiKeyLaboratoryofAgriculturalWater-saving,CenterforAgriculturalResourcesResearch,InstituteofGeneticsandDevelopmentalBiology,ChineseAcademyofSciences,294HuaizhongRoad,Shijiazhuang,Hebei0
3、50021,ChinaarticleinfoabstractArticlehistory:TheSouth–NorthWaterTransfer(SNWT)project(uponcompletion)willdeliversome4.8billionm3Received30June2009ofwaterperannumtoHebei,BeijingandTianjin—greatlymitigatingwatershortageinNorthChina.Accepted6June2010Surfacewat
4、erthatiscurrentlyrestrictedtourbanusecouldthenbecomepartlyavailableforagriculturalAvailableonline29June2010production.Thiswillreducethedependenceofagricultureongroundwater,whichwillinturnretardgroundwaterdepletionintheregion.Thisstudydeterminesthespatialand
5、temporaldistributionsofKeywords:agriculturalwaterrequirementinHebeiPlain.ThisinturnlaysthebasisforsurfacewaterreallocationDSSATfollowingthecompletionoftheSNWTproject.DSSATandCOTTON2KcropmodelsareusedalongwithCOTTON2Kcropcoef?cientmethodstoestimaterequiredir
6、rigationamountsforwheat,maize,cotton,vegetablesRequiredirrigationamountPan-evaporationcoef?cientandfruittreesinHebeiPlain.Thestudyuses20years(1986–2006)ofagronomic,hydrologicandclimateCropwaterusedatacollectedfrom43well-distributedstationsacrosstheplain.Bas
7、edontheresults,wheataccountsforover40%oftotalirrigationwaterrequirementintheplain.Similarly,wheat,maizeandcottontogetheraccountfor64%ofthetotalirrigationwaterrequirement.ThepiedmontregionsofMountTaihanghavethehighestirrigationrequirementduetohighpercentfarm
8、andirrigatedlandarea.ThemonthsofAprilandMayhavethehighestirrigationwaterrequirement,respectivelyaccountingfor18.1%and25.4%ofaverageannualirrigation.Spatialandtemporalvariationsinourestimatedirrigationw
