Page 217 - 《水资源与水工程学报》2022年第6期
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# 33 A # 6 $                      8 9 : ; 8 < = > ?                               Vol.33No.6
               2022 @ 12 B              JournalofWaterResources&WaterEngineering                 Dec.,2022

            DOI:10.11705/j.issn.1672-643X.2022.06.27


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                    Spatialandtemporalevolutionofwaterfootprintsofmaincropsin

                            HuaiheRiverBasinandanalysisofinfluencingfactors
                                                                              1
                                                      1
                                                                    2
                                          FENGQiong,BIZhongfei,LIUJun
                            (1.CollegeofHydrologyandWaterResources,HohaiUniversity,Nanjing210098,China;
                                 2.DeqingWaterResourcesandHydropowerCenter,Deqing313200,China)
                 Abstract:ThewaterfootprintsofmaincropsinHuaiheRiverBasinwerediscussedinordertoprovidea
                 theoreticalbasisfortheimprovementofregionalagriculturalwaterusestructureandwatershortage.Tak
                 ingthemaincropsinthefiveprovincesoftheHuaiheRiverBasinastheresearchobjects ,thespatialand
                 temporalchangesoftheblue,greenandgraywaterfootprintsofwheat,rice,maize,soybeanandoil
                 plantsfrom2000to2017werecalculatedandanalyzed,andtheinfluencingfactorsofcropwaterfoot
                 printswereexploredusingpathanalysis.Theresultsshowthatthesoybeanhadthelargestannualaverage
                 waterfootprint ,andcropwaterfootprintswerenegativelycorrelatedwiththeyieldperunit.Intermsofin
                 terannualvariability ,thetotalwaterfootprintofwheat,rice,maize,andoilplantsgenerallyshoweda
                 decreasingtrend,whereasthatofsoybeanshowedatrendoffluctuatedincrease.Astothespatialdistri
                 bution,thetotalwaterfootprintsinAnhuiProvinceandHenanProvincewerethelargest,thespatialdis
                 tributionofthewaterfootprintshowedacertaindegreeofaggregation ,whichwasgenerallyhighinthe
                 middleandlowinthesurroundingareas.Inaddition ,thefactorsthathadthegreatestimpactonthewater
                 footprintofcropsintheHuaiRiverBasinweretheapplicationamountofnitrogenfertilizers ,averagetem
                 peratureandannualrainfall.
                 Keywords:waterfootprint;bluewaterfootprint;greenwaterfootprint;graywaterfootprint;spatialand
                 temporalofwaterfootprint ;crop;pathanalysis;HuaiheRiverBasin

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