Page 76 - 《水资源与水工程学报》2022年第3期
P. 76

!33 " ! 3 #                       & ' ( ) & * + , -                               Vol.33No.3
               2022 $ 6 %               JournalofWaterResources&WaterEngineering                 Jun.,2022

            DOI:10.11705/j.issn.1672-643X.2022.03.10


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                 ôÖ×ä­Rõ 1970-2019 ! 2~3 ; !}WzÞ#>ØÙ, Äo6"#>ä­{·, l"âÚä­{·。Hi
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                 8IBJK:P42   LMNOP:A    LQRK:1672643X(2022)03007209
                       Climatewarminghiatusandcharacteristicsofairtemperature
                                    andprecipitationinMuUsSandyLand


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                             LIJia,GUOLan,YANGMeihuan,ZHAOGang,WANGTao
                          (1.CollegeofGeomatics,Xi’anUniversityofScienceandTechnology,Xi’an710054,China;
                                 2.ShaanxiGuotuInformationTechnologyCo.,Ltd.,Xi’an710034,China)
                 Abstract:Asaspecialphenomenonintheprocessofglobalwarming,climatewarminghiatusischarac
                 terizedbyslow ,stagnatedordecreasedgrowthofairtemperature.TheecologyoftheMuUsSandyLand
                 isfragileandsensitivetoclimatechange ,theresearchonthehiatusandthecharacteristicsofairtemper
                 atureandprecipitationhasimportantreferentialvaluefortheappropriateadjustmentofregionalvegetation
                 ecologyprotectionpoliciesinthisarea.Basedonthegroundobservationdataofairtemperatureandpre
                 cipitationintheMuUsSandyLandduring1970-2019 ,weadoptedthelineartrendmethodandthe
                 Mann-Kendalltestmethodtoanalyzethehiatusandthecharacteristicsofairtemperatureandprecipita
                 tioninthisarea.Theresultsshowedtheinterannualandseasonalaverageairtemperatureandprecipita
                 tionincreasedsignificantly (P<0.05),presentingthecharacteristicsof“warmandhumid”intheMu
                 UsSandyLandduring1970-2019.From1998to2012 ,theannualaverageairtemperaturechangerate
                 was-0.70℃/10a(P<0.05),hiatuswasreadilyrecognized.Duringtheoccurrenceofhiatus,theav
                 erageairtemperatureineachseasonshowedadownwardtrend ,withthehighestdecreasingrateinspring
                 andwinter;whereastheannualprecipitationstillshowedanincreasingtrend,withthehighestincreasing
                 rateinsummerandautumn.Afterthehiatus(2012-2019),thechangeratesoftheinterannualand

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                +,-.: v A(1996-), H, q]Œ¥K, ÓM(^P, STUVÿ]Ð@(^。
                /0+,: _ ©(1965-), H, z{;WK, ÒNO, STUVÈ|*ÿ]Ð@(^。
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