Page 75 - 《水资源与水工程学报》2023年第2期
P. 75
!34 " ! 2 # & ' ( ) & * + , - Vol.34No.2
2023 $ 4 % JournalofWaterResources&WaterEngineering Apr.,2023
DOI:10.11705/j.issn.1672-643X.2023.02.09
((GUu÷ûAB
H{|, }~, u, 6`
( ø?cd\& 010É&`, ø? µê 625014)
C D: GÀöC(?äií/£²ñ/ÄnÅÆ, G/ß9®¯jk, ' SWAT0J®, Ýf
CMIP5 UkÌt$£²±XZ3æÃÙ, ±£Ó²£&"¿6CI 2022—2050 Áñ/ÄnÅÆ。ÇÈÉ
Ê: / 2022—2050 ÁA0Ó¬æ"¬+'Ï*, ¾ÖãaZÅÆ, Ãi/LhA0ABm\, /
khæ"ABm\。' RCP2.6、RCP4.5、RCP8.53 ½æÃ0h\,2022—2050 ÁÁñ/¬ãaA\ÅÆ, Än
3
8
8
8
h³îG 5.79×10、5.53×10、2.99×10 m /a。(m'Ï*, £²¯çÓ(çñ/ãa{ôÅÆ, "çÓ¿
çñ/ãaAÅÆ, ¿çñ/ABïÀ 10%。/Ü/ãa<kHLjkA¹5, (m'
Ï*, /LhÜ/¬ãaAÅÆ。£²ñ/ãaAÅÆ, ¿çñ/ABm\, ^ç7D¿S,k
0J1ß, /Lh ß0$&^¸.+A\。
>EF: £²ñ/|; Ü/²£³´;SWAT ®; (?äií/
GHIJK:TV121;P333 LMNOP:A LQRK:1672643X(2023)02007110
Simulationoffuturerunoffinthemiddleandupper
reachesofJinshaRiverBasin
DUZhiyi,NIFuquan,DENGYu,ZHOUJiahao
(CollegeofWaterConservancyandHydropowerEngineering,SichuanAgriculturalUniversity,Ya’an625014,China)
Abstract:ThechangetrendoffuturerunoffinthemiddleandupperreachesofJinshaRiverBasinwas
investigatedtoprovidesometechnicalsupportfortheplanningoffloodcontrolinthebasin.Basedonthe
SWAThydrologicalmodel ,theCMIP5datasetwasselectedtoestablishaglobalclimatemodelforthefu
tureperiodof2022-2050,andtherunoffchangetrendinthestudyareawasanalyzedfromthetemporal
andspatialscales.Theresultsshowthattheprecipitationandtemperatureinthebasinfrom2022to2050
arebothhigherthanthoseinthebaseperiod,andshowanupwardtrend,withalargeincrementinrain
fallinthesouthofthebasinandalargeincrementintemperatureinthenorthofthebasin.Underthe
threescenariosofRCP2.6 ,RCP4.5andRCP8.5,therunofffrom2022to2050allshowanupward
6
6
3
6
trend,andthechangeratesare579×10,553×10 and299×10 m /a,respectively.Comparedwith
thebaseperiod,thefuturespringandautumnrunoffshowandownwardtrend,whereasthesummerand
winterrunoffshowanupwardtrend,withthelargestincrementinwinter,reaching10%.Therunoff
yieldincreasessequentiallyfromnorthwesttosoutheast ;comparedwiththebaseperiod,therunoffyield
inthesouthofthebasinpresentsanincreasingtrend.Theresultsindicatethattherunoffwillshowanin
creasingtrendinthefuture ,withagreaterincrementinwinter,andextremehydrologicaleventssuchas
winterfloodsmayoccur;inthefuture,thethreatoffloodsinthesouthernbasinmayfurtheraggravate.
Keywords:futurerunoffsimulation;spatialdistributionofrunoffyield;SWATmodel;middleandupper
reachesofJinshaRiverBasin
!"#$:20220725; %$:20221116
'()*: ø?rPg²cÓ0êZ236Cij)*(035Z2289)
+,-.: ܳÃ(1998—), ë, ø?³@, RB6CD, -1cd0]¨©6C。
/0+,: ´OZ(1965—), ë, ø?Ϫ@, AB, PQ, RBDST, -10êZÓcd0]¨©6C。