長江口地區(qū)晚第四紀沉積高分辨率孢粉、藻類研究及古環(huán)境意義.pdf

1、同濟大學(xué)海洋與地球科學(xué)學(xué)院碩士學(xué)位論文長江口地區(qū)晚第四紀沉積高分辨率孢粉、藻類研究及古環(huán)境意義姓名：張敏斌申請學(xué)位級別：碩士專業(yè)：海洋地質(zhì)指導(dǎo)教師：張玉蘭20021225StudyonHighresolutionSporopollenandAlgaeofChangjiangRiverEstuaryRegionSinceLateQuaternaryanditsPaleoenvironmentalSignificance(Abstract)

2、withtIleeconomydevelopmentinournation，ChangjiangRiverestuaryregionismoreandmoreimportantShanghai，asthecenterofinternationaleconomyfinanceandtrade，islocatedinChangjiangestuaryregionSoithasimportantsignificancetotheeffecti

3、vedevelopmentandusagetothenaturalresourcesandtoprompttheeconomyofShanghaiandthewholeChangiiangRiverDeltathatpayattentiontopaleoenvironmentchangesofthisregionTakingChangjiangRiverestuaryregionastheimportantstart，thispaper

4、choseCoreCYfordensesamplingFourrepresentativecores，includingCoreCYXT2，J20andthecoredrilledinPeopleSquare，werestudiedwithsporopollenandalgaeanalysis，carbonateddatingandstratigraphyresearchHalfquantitativeandquantitativema

5、thematicgeologicalmethods，suchasoptimizeddivisioncorrespondinganalysisandclusteranalysis，wereadoptedfordataprocessingandhighresolutionsporopollenandalgaesequencewereobtainedAdditionallythispaperalsodiscussedthechangesoft

6、hepaleovegetation，paleoclimate，paleoenvironmentandthesealevelinChangjiangRiverestuaryregmnsincetheLateQuaternaryAccordingtotheresearchofsporopollenandalgaeofLateQuaternaryexitinginChangjiangRiverestuaryregion，sixstagesab

7、outtheevolutionofthepaleovegetation，paleoclimateandpaleoenvironmentsincetheLateQuaternaryinShanghairegionwerereconstructedaSfollow：1sparsemixedforestofconiferanddeciduousbroadleavesforestwiththeclimatecoldanddry2mixedfor

8、estofconiferandbroad—leavestograssland，theclimatetemperate—coolandalittlemoist3mixedforestofconiferandbroad1eaveswithafewevergreenbroad—leavestrees，temperateandalittledry4evergreenbroad1eavesforestmainlyinctudingCastanop

9、sisandQuercus(evergreen)，hotwarlIlandwet’5mixedforestofconiferandbroad1eavesmainlyincludingQuercus，PinusandArtemisia，temperateandalialedry6mixedforestofdeciduousbroad1eaves，evergreenbroad。leavesandconitertograsslandmainl

10、yincludingQuercus(deciduous)，Quercus(evergreen)andPinus，theclimateWalITIandmoistItcoincidestheclimateoftheworldincomparisonwiththec1uwelineoftheclimatefluctuationofthehomeandabroadMeanwhiletllispaperalsorestoresthesevens