古海洋生产力指标研究进展

12220054(,;)EarthScienceFrontiers(ChinaUniversityofGeosciences,Beijing;PekingUniversity)Vol.12No.2Apr.20051,2,1,211,10008321,610059HUANGYong2jian1,2,WANGCheng2shan1,WANGYun2liang211SchoolofEarthScienceandMineralResources,ChinaUniversityofGeosciences,Beijing100083,China21EarthScienceCollege,ChengduUniversityofTechnology,Chengdu610059,ChinaHUANGYong2jian,WANGCheng2shan,WANGYun2liang1Progressinthestudyofproxiesofpaleoceanproductivity1EarthScienceFrontiers,2005,12(2):1632170Abstract:Itisofimportancetoobtainproxiesreflectingthefluctuationsofprimaryproductivityinpaleoceano2graphicstudies1Biologicalsediments,nutrients,traceelements,isotopesandpaleontologicaldata,commonlyshowsomerelationshipwiththemarineproduction.Therefore,theycouldbeusedtoreconstructpaleoceanproductivity.Theaccumulationratesofbiologicalsediments,includingorganiccarbon,biogeneticcarbonatesanddepositionofsiliceoussediments.Theseareoftendominatedbypaleoceanproductivity,sothatthesesedi2mentscanbeusedastheproductivityproxies.Oceanicproduction,onthegeologicaltimescale,maybecon2trolledbytheavailabilityofnutrientsintheocean.Thenutritionrecordscouldstillgivemuchinformationtotheprolificacyofthepaleocean.Thegeochemicalbehaviorofcertaintraceelementsmighteitherberelatedtotheremineralizationoforganicmatter,orcontrolledbytheredoxstatusinthebottomwater,oraffectedbythegrowthofsomeplankton.Consequently,theabundanceorratiooftheseelementsmayindicate,directlyorin2directly,thevariationsinpaleoproductivity.Paleoproductioncouldbeobtainedfromthecarbonstableisotopicrecordsofmarinecarbonatesandorganicmatter,andnitrogenisotopicratiosinthemarineorganicmatter.Theabundancesandassemblagesofmicrofossilscanbeutilizedtoreflectthevariationsofpaleoproductivity1Keywords:paleocean;proxiesofproductivity;biologicalsediments;carbonisotopic:,:(1),,;(2),,;(3),,,;(4),;(5):;;;:P74:A:10052321(2005)02016308:20041203;:20050127:(40332020);(40403003):(1974),,,,E2mail:[e-mail]164,,/(EarthScienceFrontiers)2005,12(2),[1]150000,CO2(),,[2,3],;,[4],[5],1,,,;,/,/[6](1),(TOC),[6]MullerSuess(1979),,[7]:P=100w(Corg)s(1-)/(01003S0130)(1)P(g/(m2ka));w(Corg);S(cm/ka);s(g/cm3);(),,,BralowerThiestein(1984)(fPR,preservationfactor)(1),(primaryproduction)[8]:fPR=r(Corg)/PP(2)(2):r(Corg);PP(01001%10%),,2%[9],;,11([8])Fig11Primaryproductivityandorganiccarbonaccumulationrates(2);,[10],,,[11][12],[13,14],[1517],BrummerVanEijden(1992),,/(EarthScienceFrontiers)2005,12(2)165CCD2F(Corg)(w(CaCO3))[10]:F(Corg)=13w(CaCO3)LSRDBD(3)(3):LSRDBD,CCD(3)F(Corg),[10]:P=21527F(Corg)0171Z01445(4)P(g/(m2a)),Z,,[18,19][20];[14],;,(R)[12](3):R=100w(CaCO3)LSRDBD(5)2,,[21];,[22,23]DSDPODP,160Ma100Ma[22,23],,/,,[23]/,(LastGlacialMaximum,LGM),,,CO2;CO2[24]3(Ba),(Mo),(Sr),(1)BaBa[25,26]Gold2burgArrhenius(1958)BaSO4()[27],Dehairs(1980)[28],,[2931]BaSO4,BaSO4[31],Ba50%,Ba[31],Ba/Al,[32],BaSO4BaSO4,[33,31]BaSO4,/,Ba[26],BaSO4,BaSO4,,Ba[26]WolgemuthBroecker(1970)Ba15%[33];Dymond(1992)30%,[31]BaSO4,BaSO4Sr/BaBaSO4[34](2)Mo,Mo,166,,/(EarthScienceFrontiers)2005,12(2),MoCariaco,,Mo[35],CorgMo/Al[36](2)Brumsack(1986)CapeVerdeV,Mo,Zn[37],Mo2Mo/Al([36])Fig.2CorrelationsbetweenorganiccarboncontentandMo/Alratio(3)Sr/Ca,,Sr/Ca[38,39],Sr/Ca[38],,Sr/Ca[39],Sr/Ca[40],StollSchrag(2001)[41](),Sr/Ca(3),,Sr/CaSr/Ca,[42]3Sr/Ca([41])Fig.3CorrelationbetweenSr/CaratioandpaleoproductivityindexinupperCretaceouslimestonesinItaly,CdP,CdP,Boyle(1988)Cd/Ca[43];Al/TiAl(OH)3,[44,45]4,[4],,[4],[46](1)(13C),,13C,,,,/(EarthScienceFrontiers)2005,12(2)167,[47]()()[48],[49];,,[50],13C[46],13C;13C,,13C,13C13C,,DSDPODPStott(2000)13C,[51](2)198015N,15N,[52][53][54][55,56][57]15N(79)[52,58]13C,,13C15N,[59],[60],,,15N,N2(0)[61]15N48,Rau[62]DSDP36753063015N-23;Meyers[63]15N,,5,,[64],[65],,,[66],[67](),,,[68];[69,70],,,/,[71];[72],[67]/;(),[73],[7476]Mix[77],,;Sarnthein[6],168,,/(EarthScienceFrontiers)2005,12(2),ODP65830,18OLoubere[71],,Premolia2Silva[78],Hol2bourn(2001)Albian,[73],,,WolfgangKuhntAnnHolbourne,References:[1]SUJilan,LIYan,WANGQi.Someimportantresearchtop2icsforChinainoceansciencesintheearly21stcentury[J].AdvanceinEarthSciences,2001,16(5):6582663(inChi2nese).[2]BARNOLAJM,RAYNAUDD,KOROTKEVICHYS,etal.Vostokicecoreprovides1600002yearrecordofatmos2phericCO2[J].Nature,1987,329:4082414.[3]RAYNAUDD,BARNOLAJM,CHAPPELLAZJM,etal.Glacial2interglacialevolutionofgreenhousegasesasin2ferredfromicecoreanalysis:Areviewofrecentresults[J].QuaternaryScienceReview,1992,11:3812386.[4]DepartmentofMarineGeology,TongjiUniversity.GeneralPaleocenography[M].Shanghai:TongjiUniversityPress,1989(inChinese).[5]CHENJianfang.Newgeochemicalproxyinpaleoceanre2search[J].AdvanceinEarthScience,2002,17(3):4022410(inChinese).[6]SARNTHEINM,PFAUMANNU,ROSSR,etal.Trans2fer2functionstoreconstructoceanpalaeoproductivity:Acom2parison[A].SUMMERHAYSCP,PRELLWL,EMEISKC.UpwellingSystems:EvolutionsincetheEarlyMiocene[M].GeologicalSocietySpecialPublication,1992,64:4112427.[7]MULLERPJ,SUESSE.Productivity,sedimentationrate,andsedimentaryorganicmatterintheoceans.1.Organiccar2bonpreservation[J].Deep2SeaResearch,1979,26:134721