Page 47 - 《水资源与水工程学报》2023年第5期
P. 47

! 34 " ! 5 #                      & ' ( ) & * + , -                               Vol.34No.5
               2023 $ 10 %              JournalofWaterResources&WaterEngineering                 Oct.,2023

            DOI:10.11705/j.issn.1672-643X.2023.05.05


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                 (1. P!jHk# [\]^P_`abcCd./efghi, ZP P! 710048;2. `abcC5Wˆ‰ä„
                       ./z««efghi, ZP P! 710048;3. P!®Cd“ÙˆJÌÄ$, ZP P! 710054)
                 @ A: y+JDw3ÔՖ³Ú„æ (ET) |˜Û«d°± «dÑÒ[\­ÔՖ³Ú„æ6|P
                                                  0
                 Q, Þ8 45 ˆ./mјJÒ| 1970—2019 jD©Ñ˜ªÃÄ% ET, ø¹RS†]À、Mann-Kendall lmth
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                 EFGHI:P426.2   JK7LM:A    JNOI:1672643X(2023)05004309
              Temporalandspatialevolutioncharacteristicsofpotentialevapotranspiration

                               anditsinfluencingfactorsinJialingRiverBasin

                                            1
                                                                                     1
                                                         1
                                                                   1,2
                                                                                                3
                           1,2
                                                                                                          1
              ZHAOBinhua ,MAFangming,LIZhanbin,LIPeng ,HUANGJinhua,GAOBei,SUNHu
            (1.StateKeyLaboratoryofEcohydraulicsinNorthwestAridRegionofChina,Xi’anUniversityofTechnology,Xi’an710048,China;
                2.KeyLaboratoryofNationalForestryandGrasslandAdministrationonEcologicalHydrologyandDisasterPreventioninArid
                Regions,Xi’an710048,China;3.Xi’anWaterConservancyPlanningSurveyandDesignInstitute,Xi’an710054,China)
                 Abstract:Inordertostudythespatiotemporalpatternofpotentialevapotranspiration(ET)inJialing
                                                                                              0
                 RiverBasin(JRB)andtheinfluenceofchangingclimateconditionsonpotentialET inthebasin,the
                                                                                         0
                 dailymeteorologicaldatafrom1970to2019werecollectedfrom45nationalmeteorologicalstationsinJRB
                 forthecalculationof ET.Thespatiotemporalvariationcharacteristicswereanalyzedbylineartrendrate,
                                    0
                 Mann-Kendalltrendtestandinversedistanceweighted(IDW)interpolation.Thesensitivityanalysis
                 andcontributionratewereusedtoquantifytheleadingfactorsinfluencingthechangeofET,andthein
                                                                                             0
                 teractionsbetweentheinfluencingfactorswereanalyzedbythegeographicdetector.Theresultsshowthat
                 attheannualscale ,themeanairtemperatureintheJRBincreasedattherateof0.20℃/10a,whilethe
                 relativehumidity,averagewindspeedandsunshinedurationdecreasedattheratesof0.239%/10a,
                            -1
                                                   -1
                0.048(m·s )/10aand0.10(h·d )/10a,respectively.Moreover,theannualET decreasedat
                                                                                             0
                 therateof0.133mm/10a,whichincreasedinspringandwinter,butdecreasedinsummerandautumn.
                 Spatially ,annualET washigherinthenorthbutlowerinthesouth.Inconclusion,theleadingfactorof
                                  0
                 annual ETchangewasmeanairtemperature;however,thechangeofETinJRBwastheresultofthein
                                                                              0
                         0
                 teractionsofmultiplefactors,andtheexplanatorypoweroftheinteractionbetweenmeanairtemperature
                 andrelativehumidityreached68.4%.Theresultscanhelpunderstandthedeepanalysisofecological
                 andhydrologicalprocessesinthestudyarea.

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                +,-.: ™´`(1990—), N, ZPžµ(, ;<, =>, +Jœ]yÔÕbcC5CTñIWCu。
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