Page 15 - 《水资源与水工程学报》2022年第5期
P. 15

! 33 " ! 5 #                      & ' ( ) & * + , -                               Vol.33No.5
               2022 $ 10 %              JournalofWaterResources&WaterEngineering                 Oct.,2022

            DOI:10.11705/j.issn.1672-643X.2022.05.02


                           ¤[¥¦§¨©V=_ª/«¬­®

                                          :¯;«°±TU


                                                  1        2         2       3
                                           *+, , % - , #./ , 0 1
                      (1. s)GU&Y ©ÓWDu&Y, s) _[ 213001;2. ã==ØP& VG%&&Y, ã= rE
                              410081;3. FGC=Ø&Y mnFG&Y( Du&Y), Z[ FGC 553004)
                 C D: ¶rsH=ÐI¹E 1956-2016 õ fÖÐ{6DJB'«, ¶ 1989 õBCET)eKSKe, ×£L
                 ÁST¡…±fST¡>?'Þ¬…eÓ¬ Ð{6Ú%eÓ{e。ÉßÎà: 'Þ¬…eÓ¬õ’Ð{6Mz
                                               8
                                                            8
                                                              3
                 „·LÁ, „·úÍSNB 1.9457×10 … 0.7682×10 m /a; Ð{ª«švÄCóô, Näl 60% ~70%, e
                 Ó¬ 4 ÕC©óô Ð{6ä'Þ¬„·— 40% ~80%, OCóô„·P½ël 77%; Ð{6€ 3 Mݬe
                 Ó, eÓ¬ä'Þ¬ ±Ý¬ÄOvQ·Q´i= 2 ·, rݬØمvwï´R$ 6a; „sI…F"SoÕC
                 ©T Ð{6´BÐIV-´{6  2/3, švŽUV¹ 1ò…WX¹ ±ò。>?ÉßáBH=ÐIV-D
                 YZã CDE[\•ð%&lñ®¯。
                 EFG: Ð{6; CET); eÓ¬; 'Þ¬; ±fST; H=ÐIV-
                 HIJKL:TV121   MNOPQ:A    MRSL:1672643X(2022)05001106

                Runoffchangingcharacteristicsbeforeandafterriversystem connectivity
                       variationintheThreeOutletsoftheSouthofJingjiangRiver

                                                                          2
                                                             2
                                               1
                                   LDianqing,ZHANGRui,LIJingbao,DAIWen              3
                     (1.SchoolofCultureandTourism,JiangsuUniversityofTechnology,Changzhou213001,China;2.Schoolof
                       GeographicalSciences ,HunanNormalUniversity,Changsha410081,China;3.SchoolofEconomicsand
                          Management(SchoolofTourism),LiupanshuiNormalUniversity,Liupanshui553004,China)
                 Abstract:BasedonthemeasuredrunoffdataoftheThreeOutletsoftheSouthofJingjiangRiverfrom1956
                 to2016 ,thetemporalandspatialvariationcharacteristicsofrunoffwerestudiedinthebaseperiodand
                 changeperiodbytrendanalysisandwaveletanalysismethods,presuming1989asthedividingpointofwa
                 tersystemconnectivityvariation.Theresultsshowedthatthedeclineratesofaverageannualrunoffinthe
                                                                           6
                                                                              3
                                                        6
                                                           3
                 baseperiodandchangeperiodwere194.57×10m /aand76.82×10m /a,respectively,whichshowed
                 adownwardtrend.Therunoffwasmainlyconcentratedinthewetseason ,accountingfor60% -70%.
                 Runoffsinthefourhydrologicalseasonsdecreasedby40% -80% inthechangeperiod ,andthedecline
                 rateinthedryseasonwasashighas77%.Runoffchangespresentedthreetypesofperiodiccycles,the
                 numberofshorttermcyclealternationbetweenwetanddryphasesinthechangeperiodwasabouttwotimes
                 morethanthatinthebaseperiod ;whereastherangeandcentralvalueofthelongtermcycleswereshort
                 enedbyaboutsixyears.TherunoffinXinjiangkouandGuangjiapuhydrologicalstationswereabout2/3of
                 thetotalflowoftheThreeOutletsarea ,whichwereconcentratedinthewestbranchofSongziriverandthe
                 eastbranchofOuchiriver.Theresultscanprovideascientificandtechnicalsupportfortheregulationand
                 storageofwaterresourcesintheThreeOutletsareaandtheDongtingLake.
                 Keywords:runoff;riversystemconnectivity;changeperiod;baseperiod;waveletanalysis;theThree
                 OutletsoftheSouthofJingjiangRiver

                !"#$:20211129; %&#$:20220428
                '()*: ã=½#$%&'()*(2019JJ40188); s)½GU&Y4>YÂ)*(KYY20010)
                +,-.: ?@A(1975-), B, 01Cv4, 56, 89, :6;<=, >?@ABC©CDEDC©;©。
   10   11   12   13   14   15   16   17   18   19   20