成都地區(qū)4ka以來環(huán)境-氣候變化與其對古蜀文明的影響_17421.pdf

1、成都理工大學碩士學位論文成都地區(qū)4ka以來環(huán)境氣候變化與其對古蜀文明的影響姓名：羅麗萍申請學位級別：碩士專業(yè)：第四紀地質學指導教師：朱利東20070501成都理工大學碩十學位論文EnvironmetalClimaticChangesofChengduPlainfrom4kaandIfsInfluenceonAncientShuCivilizationIntroductionoftheauthor：LuoLiping，was100monA

2、ugust7，1981UndertheguidanceofProfZhuLidongShewasawardedtheMaster’SDegreeofQuaternaryGeologyatChengduUniversityofTechnologyonJuneABSTRACTnishelDfIlltoapplytheenvironmentalanalysestopaleoenvironmentalandpaleoclimatierecons

3、tructionEnvironmentalarcheologybecomesmoreandmoreimportantespeciallyintheQuaternaryresearchesAncientShucivilizationasimportantpartofChinesecivilization，attractspeople’SattentionallOVel“theworld，witharcheologydevelopingan

4、dmanyancientsitesofShucivilizationdiscoveredJinshasite。whichwasdiscoveredin2001，isthegreatestdiscoveryinearly21stcenturyinChinaIntheresearchanalysesofgrainsize，magneticsusceptibilityandsporepollenareusedteconstructthepal

5、eoenvironmentandpaleoclimateofJinshasite4000aBEBasedontheanalyses，therelationshipbetweenenvironmentandancientShucivilizationisdiscussedIntheresearchwedrawtheconclusionsasfollowings：①Basedontheanalysesofspore—pollen，oryza

6、pollensarediscoveredatthebottomoftheprofileWeCanconcludethattheplantactivitiesbeganasearlyas3800aBPinChengduplainaccordingto6”Cagedetermination②Inthelightofanalysesoffieldsurveyandgrainsize，thesedimentaryenvironmentexper

7、iencedthreephrases：ItWasalluvialfanandgravelsbefore3800aBP；Thenpeatandfluvialenvironment、^，c∞depositedbetween3800～3300aBP；Atlastpaleosolprevailedfrom3300aBPandsmallfenpeatsdevelopedinpartsofareas③Intermsofanalysesofspore

8、—pollenmagneticsnsceptibility，theclimateofChengduplainofrecem4000yearSWasnotstableItwasrelativelywarmerthendeclinedfrom3100aBPandroseagainfrom1700aBPbutlower血anthatbefore3100aBPItdecreasedobviouslyandlastedforalongtime，u

9、ntilearly190。becamewarnlgradually7plantzonesandcorresponding7climaticphrasesareconcluded(至)Accordingtotheanalysesabove，itWasusuallyfloodinChengduplainbefore3000aBPbecauseofwetandrainButthetemperatureandprecipitationdecli

10、nedsincethenTheclimaticchangesledtoSanxingduicivilizationdeclinetoancientShucivilizationmigrationfromJianfiverbasintoMinriverbasintotwelvebridgecivilizationprosperitygraduallyKeywords：Chengduplain；environmentalarcheology