简介：WesampledthesedimentsoftheEastChinaSeaduring2005and2006,andanalysedthecontentsofthebiogenicmatters:biogenicsilica,organiccarbon,andorganicnitrogen.Fromthesurfacedistributionwefoundthecontentsofthesesubstancestobeintherangesof0.72%-1.64%,0.043%-0.82%,and0.006%-0.11%,respectively.Theirdistributionsweresimilartoeachother,beinghighinsidetheHangzhouBayandlowoutsidethebay.Theverticalvariationsofthecontentswerealsosimilar.Inordertodiscusstherelationbetweenthemweanalysedthevariationsofcontentwithdepth.Theyincreasedinthefirst7cmandthendecreasedwithdepth.Thepeakswerefoundatdepthsbetween20to25cm.Thedistributionofcarbonateshowedanoppositetrendtothatofbiogenicmatters.Thecontentoftotalcarbonwasrelativelystablewithrespecttodepth,andtheratioofhighorganiccarbontocarbonateshowedalowburialefficiencyofcarbonate,whichmeansthatthemainburialofcarbonisorganiccarbon.Inordertodiscussthesourceoforganicmatters,theratiooforganiccarbontoorganicnitrogenwascalculated,whichwas8.01to9.65,indicatingthattheorganicmatterinthesedimentswasderivedmainlyfromphytoplanktonintheseawater.

简介：Biomarkerisanimportanttoolinthestudyofmarineorganicgeochemistry.Itsdevelopmentandapplicationmakesitpossibletoelucidatetheprocessandmechanismoftheorganicmatterintheocean.Hydrocarbonsarethemostusefulmolecularmarkers.Theyareusedastracersinmanyaspects,suchassourceindication;thedegradationoforganicmatter;diagensisprocess;environmentalpollutionandpaleooceanicstudy,etc.Theyarestudiedintheestuaries,coastalareaanddeepseatogivetheknowledgeofmarineorganicgeochemistry.Thepaperdealswiththecharacteristics,developmentandapplicationofbiomarkersaswellastheiradvantagesanddisadvantages.

简介：Factoranalysisisusedtostudytheorganiccompoundsthathavehighdegreeofcorrelationwithbiomassinalgalblooming.Basedonthiscorrelation,theyarenamedcharacteristicorganiccompounds.Thecompoundsfoundaresequalene(SQU),cedrol(CED),2,5-cyclohexadiene-1,4-dione,2,6-bis(1,1-dimthylethyl)(PBQ),phenol,2,6-bis(1,1-dimethylethy-4-methyl)(BHT),3-t-butyl-4-hydroxyanisole(BHA),1,2-benzenedicarboxylieacid,bis-(2-methylpropyl)ester(DIBP),dibutylphthalate(DNBP),respectively.Monitoringthevariationsofconcentrationofthesecharacteristicorganiccompoundsinseawatermayprovidescientificbasisforstudyingandforecastingredtides.

简介：Studyonformcharacteristicsofnitrogeninmarinesedimentsistheprimarymethodtoresearchitsbiogeochemicalcyclingandnitrogenformcharacteristicsincoresedimentscanreflecttheprocessandresultsofearlydiagenesisinacertaindegree.Inthispaper,SequentialextractionprocessinnaturalgrainsizewasusedforstudyingtheexistentformsofnitrogeninfivecoresedimentsofthesouthernBohaiSeaforthefirsttime.Nitrogenwasdividedintotwoparts-transferableandfixedbasedonwhetheritcouldbeextractedbythereagent.DistributionsandearlydiagenesisoftransferablenitrogenformsinthesouthernBohaiSeawereresearchedintegratedly.ResultsindicatethatIEF-NandOSFNarepredominantformsintransferablepartinthestudiedcoresediments.Contentsofdifferentnitrogenformsvarydifferentlywithdepth,andhavedifferentdiagenesisprocess.Decompositionconstantoforganicnitrogen(ON)andOCareabout15.51×10-3a-1and4.79×10-3a-1respectively,andthedecompositioncontentofbiogenicelementsC,N,P,SihasthesequenceN＞P＞C＞Si.OC/TN(simplifiedasC/Ninthefollowing)ratioismuchlowerthanOC/ON,whichindicatesthatsedimentpreservesplentyofinorganicnitrogen(IN)and/orfixednitrogen,andthedecreaseofOC/ONratiowithdepthisduetoONreservationinsediments.Generally,transferablenitrogenaccountsformoreproportionofTNinthesurfacelayerthaninthedeeplayerofcoresediments,whereas,somestableformsofnitrogencanactivateandbecometransferableunderappropriateenvironment,whichinducestheproportionoftransferablenitrogeninTNinthedeeplayertobealmostthesameasthatinthesurfacelayer.

简介：在台湾海峡的有颜色的溶解有机物(CDOM)的吸收性质的空间、时间的可变性在夏天(到2006的8月的7月)和冬季被调查(从2006年12月到2007的1月)季节。在280nm的CDOM吸收系数(一280)从nearshore显示出一个减少的趋势到近海区域当时光谱在275295nm(S275295)显示出的波长之间计算的斜坡系数参数增加，减少的aromaticity的陈述语气和CDOM的分子的重量。一般水准280在冬季(1.47牡敳

简介：从淡水的溶解有机物(DOM)，中间咸度，并且在Jiulong河河口的海水endmember样品，中国是用有10-kDa膜的跨流动的ultrafiltration的fractionated。胶体的有机物(COM；10kDa-0.22m)retentate，低分子的重量(LMW)DOM(<10kDa)渗入，并且体积样品用吸收光谱学和三维的荧光excitation-emission-matrix光谱学被分析。COM的紫外可见的系列很类似于获得为的那些渗入并且体积样品，与增加波长monotonically减少。大多数发色团的DOM(CDOM，表示了为吸收系数一355)发生在LMW部分，当在胶体的部分的CDOM的百分比比在海水endmember(6.8%)在淡水endmember(13.4%总数)是实质地更高的时。当有COM部分的移动和在中间咸度的样品的permeate部分的并发的增加时，体积CDOM在河口显示出保守混合行为，暗示胶体的CDOM的部分被转变成LMWCDOM。二个象腐殖一样部件(C1：<250，325/402nm；并且C2：265，360/458nm)并且一个像蛋白质的部件(C3：275/334nm)用平行因素分析被识别。分别地，到体积样品的COM部分的C1，C2，和C3部件的贡献是2.5%8.7%，4.8%12.6%，和7.4%14.7%揭示那荧光灯DOM主要在LMW部分发生在Jiulong河河口。在retentate的C1和C2部件并且渗入样品显示出保守混合行为，而是C2/C1的紧张比率比的在retentate是更高的在为所有咸度样品的permeate部分，证明腐殖的部件是更多比fulvic部件在COM充实。C3/(C1+C2)的紧张比率比在permeate部分为在retentate是高得多的中间咸度并且海水样品，表明像蛋白质的部件是相对，更多比象腐殖一样部件在COM充实。到在为海水endmember在淡水endmember从14%增加到72%的retentate的全部的荧光的像蛋白质的部件(C3)的贡献取样，清楚地在混合COM的过程的河口期间与像蛋白质的部件相比由象腐殖一样部件显示优势的变化。

简介：河口的分布给溶解有机物(CDOM)涂颜色是physicalbiogeochemical过程的联合结果。遥感动态地高度被需要到监视器河口CDOM。从四季节的巡航在situ数据使用，一个算法被开发在400nm估计CDOM吸收系数(在Zhujiang(珀尔河)的CDOM(400))河口(ZJE)。Rrs(667)/Rrs(443)和Rrs(748)/Rrs(412)。由使用它在水上节制分辨率成像分光辐射函数从2002～2014的卫星(MODIS/Aqua)数据，季节的气候学在ZJE的CDOM(400)被计算。CDOM分布主要地走水路被影响来自Zhujiang河的分泌物并且在水下地形学。沿着对一个水深度坡度垂直的节，季节CDOM(400)指数地减少了(y=aebx,b<0)，但是与在季节之中的大差别。河流的新鲜的水是在ZJE的CDOM的主要来源。有增加咸度的Fulvic酸部分减少。用发达算法，保守CDOM混合方程，和河分泌物，在从2002～2014的夏天和冬季的溶解的器官的碳(文档)的有效河流的结束成员集中和流动首先从MODIS/Aqua数据被估计。两有效河流的结束成员文档集中和流动是断然与河有关排出，显著地在有为集中的0.698的R2的夏天并且0.9657为流动。

简介：Laserinsituscatteringandtransmissometry(LISST)significantlyimprovesourabilitytoassessparticlesizedistribution(PSD)inseawater,whilewide-rangingmeasurementsoftheorganic-inorganiccompositionsofsuspendedparticulatematters(SPM)arestilldifficultbyusingtraditionalmethodssuchasmicroscopy.Inthisstudy,PSDpropertiesandSPMcompositionsaroundtheBohaiStrait(China)wereinvestigatedbasedonthemeasurementsbyLISSTincombinationwithhydro-biologicalparameterscollectedfromafieldsurveyinsummer2014.FourtypicalPSDshapeswerefoundintheregion,namelyright-peak,left-peak,double-peakandnegative-skewshapes.Thedouble-peakandnegative-skewshapesmayinterconvertintoeachotheralongwithstronghydrodynamicvariation.IntheupperlayeroftheBohaiSea,organicparticleswereinthemajority,withinorganicparticlesrarelyobserved.Inthebottomlayer,SPMwerethemixtureoforganicandinorganicmatters.LISSTprovidedvaluablebaselineinformationonsize-resolvedorganic-inorganiccompositionsofSPM:thesizeoforganicparticlesmainlyrangedfrom4to20μmand40to100μm,whilemostSPMrangingfrom20to40μmwerecomposedofinorganicsediment.

简介：Concentrationsoforganicmatter,ironandmanganeseinthedeepseasurfacesedimentsintheNanshaIslandsseaarea,SouthChinaSeaaremeasured.Horizontalandverticaldistributionsofironandmanganesearediscussed.Theverticaldistributionofironandmanganeseinthesedimentsresultsfromreduction,diffusion,andredepositionofmanganese(oriron)oxideandhydroxideinthesediment.Therearethemaximaofironandmanganeseinsolidphaseinthetopofthesediment,whichiscausedbythepenetrationofO2andtheupwardfluxofMn2+(orFe2+).Manganesebacteriaplayaveryimportantroleinthecycleofsolid-phaseironandmanganeseintheoceanenvironment.ManganesebacteriaoxidizeMn2+(orFe2+)indissolvedstatetoMn4+(orFe3+)inoxidizedstateundertheaerobiccondition,whereastheyreduceironandmanganeseinanaerobicconditions.

简介：TheJiaozhouBayischaracterizedbyheavyeutrophicationthatisassociatedwithintensiveanthropogenicactivities.FourcoresedimentsfromtheJiaozhouBayareanalyzedusingbulktechnologies,includingsedimentarytotalorganiccarbon(TOC),totalnitrogen(TN),thestablecarbon(δ~(13)C)andnitrogen(δ~(15)N)isotopiccompositiontoobtainthecomprehensiveunderstandingofthesourceandcompositionofsedimentaryorganicmatterandfurthershedlightontheenvironmentalchangesoftheJiaozhouBayonacentennialtimescale.ResultssuggestthattheTOCandTNconcentrationsincreaseintheuppercore,havingindicatedaprobableeutrophicationprocesssincethe1920sintheinnerbayandthe2000sinthebaymouth.TheTOCandTNconcentrationsoutsidethebayhavealsochangedsince1916owingtothevariationofterrigenousinput.ConsideringTOC/TNratio,δ~(13)Candδ~(15)N,itcanbeconcludedthereisamixtureofterrigenousandmarineorganicmattersourcesinthestudyarea.Asimpletwoend-member(terrigenousandmarine)mixingmodelusingδ~(13)Cindicatsthat45%–79%ofTOCintheJiaozhouBayisfromthemarinesource.TheenvironmentalchangesoftheJiaozhouBayarerecordedbygeochemicalproxies,whichareinfluencedbytheintensiveanthropogenicactivities(e.g.,extensiveuseoffertilizers,anddischargeofsewage)andclimatechanges(e.g.,rainfall).

简介：TheEastAsianmonsoonsysteminfluencesthesedimentationandtransportoforganicmatterinEastAsianmarginalseasthatisderivedfrombothterrestrialandmarinesources.Inthisstudy,wedeterminedorganiccarbon（OC）isotopevalues,concentrationsofmarinebiomarkers,andlevelsofOCandtotalnitrogen（TN）incoreYSC-1fromthecentralSouthYellowSea（SYS）.OurobjectivesweretotracethesourcesofOCandvariationsinpalaeoproductivitysincethemiddleHolocene,andtheirrelationshipswiththeEastAsianmonsoonsystem.Therelativecontributionsofterrestrialversusmarineorganicmatterincoresedimentswereestimatedusingatwo-end-membermixingmodelofOCisotopes.ResultsshowthatmarineorganicmatterhasbeenthemainsedimentconstituentsincethemiddleHolocene.Thevariationofterrestrialorganiccarbonconcentration（OCter）issimilartotheEASMhistory.However,thevariationofmarineorganiccarbonconcentration（OCmar）isoppositetothatoftheEASMcurve,suggestingOCmarisdistinctlyinfluencedbyterrestrialmaterialinput.InputsofterrestrialnutrientsintotheSYSoccurintheformoffluvialandaeoliandust,whileconcentrationsofnutrientsinsurfacewaterarederivedmainlyfrombottomwaterviatheYellowSeacirculationsystem,whichiscontrolledbytheEastAsianwintermonsoon（EAWM）.Variationsinpalaeoproductivityrepresentedbymarineorganicmatterandbiomarkerrecordsare,ingeneral,consistentwiththerecentEAWMintensitystudies,thus,comparedwithEASM,EAWMmayplaythemainroletocontrolthemarineproductivityvariationsintheSYS.

简介：Distributionsandsourcesoftotalorganiccarbon(TOC)inseabedsedimentsandtheirimplicationsforhydrodynamicsareanalyzed,intheturbiditymaximumoftheChangjiangEstuary.EcologyecoenvironmentaleffectsofestuarywateronthecontinuouslyincreasingterrigenousorganiccarbonfromtheChangjiangRiverarealsoexploredthroughvariationsoforganiccarboncontentandwaterqualityindicators.Resultsshowthat,hydrodynamicsexertimportantinfluencesondistributionsoforganiccarbonintheturbiditymaximumofChangjiangEstuary.Fortheirredistributioneffectofterrigenousorganiccarbonwithinthemovinglayerinthewholeregion,variationsfromlandtoseaarenotindicatedbysurficialandverticalaveragevaluesofTOCandtotalnitrogen(TN)contentsincoresediment,aswellasorganicstablecarbonisotopesinsurfacesediments.However,onthelong-timescale,thetrendofterrigenousorganiccarbondecreasingfromlandtoseaisstilldisplayedbyvariationsofstablecarbonisotopicaveragevaluesbecomingheavierfromlandtosea.PreviousstudieshaveshownthathighcontentofChlacannotappearintheChangjiangEstuaryindespiteofadequatenourishmentsupply,becausephotosynthesisofphytoplanktonisconstrainedbyhighsuspendedsedimentconcentration(SSC).However,anareawithahighcontentofChlaoccurs,whichmaybecausedbyresuspendedbenthicalgaewithbottomfinegrain-sizesediments.TremendouspressuresareimposedontheenvironmentofChangjiangEstuary,becauseofultrophicationtrendsandspecialhydrodynamics.PhytoplanktonbloomareatendstoextendfromtheouterseatothemouthofChangjiangRiver.

简介：作文，来源和在中央黄海泥区域和他们的可能的影响因素的沉积的TOC(全部的器官的碳)的埋葬流动的长期的变化在这份报纸被讨论。第一，类似分析被采用证实碳埋葬特征源于二收集了核心在YSWC(黄海温暖的水流)是流行的中央黄海泥区域是典型的。在这个基础上，这里的TOC的埋葬流动被认为是235.5488.4mol/(厘米2一)自从第一条工业革命，为大约在在沉积的TC(全部的碳)的埋葬流动之中的70%90%的财务。在二个核心与的比较TOC/TC比率在世界范围的另外的海洋的沉积，我们建议calcareous/non-calcareous有机体和IC(无机的碳)的溶解的生长是在沉积控制TOC/TC比率的重要因素。基于13C数据显示那导出水兵的器官的碳(OCa)是在全部的埋葬之中的主要部分超过85%说明比率的器官的碳。由于在二个核心的高TOC/TC比率，在沉积的TC主要也作为OCa存在，并且OCa的比例关于60%80%。是OCa在在中央黄海泥区域的沉积的所有埋葬OC之中是占优势的主要原因离开上面的水里的岸和相对高的主要生产。在这个泥区域的OC的埋葬被人的活动主要可能影响。尽管经济发展在期间晚，第一条工业革命在中国引起的第19世纪显然没在沉积增加TOC埋葬流动，自从1950年代，在成立新中国以后的工业和农业的上升清楚地增加了TOC埋葬流动。否则，我们也在TC埋葬流动之中认识到那，为大约在中央黄海泥区域的沉积的10%30%的TIC报道，它的埋葬不能简单地因此这里被忽略。从TOC埋葬不同，长期的TIC埋葬流动变化更仔细与气候联系变化：东方亚洲夏天季风可以影响Huanghe河(黄河)洪水的力量，它能进一步在沉积从土地影响陆上的IC的运输到中央黄海以及这些IC的埋葬。

简介：Thedistributionandchemicalpropertiesofcoloreddissolvedorganicmatter(CDOM)intheYellowSeaandtheEastChinaSeaduringDecember2011-January2012wereinvestigated.TheinputoffreshwaterandbiologicalactivitieshadanevidentinfluenceontheCDOMlevels(characterizedbythelightabsorptioncoefficientatthewavelengthof355nma355)inthestudyarea.ThespatialdistributionofCDOMlevelsdisplayedagraduallydecreasingtrendfromthecoastalwaters(0.37m^-1)totheopensea(0.18m^-1).Thespectralsloperatio(thesloperatioSRdefinedasS275-295:S350-400)duringthecruisewascorrelatedwithsalinity,andexhibitedalargevariationfrominshore(averageof2.515)tooffshoresites(averageof5.327)comparedwiththedistributionofa355.ThevaluesofSRwererelatedtoCDOMmolecularweight(MW).Thea355,SR,andchlorophyllain37samplescollectedfromthesurfacemicrolayerweresignificantlycorrelatedwiththoseinthecorrespondingsubsurfacewatersamples,implyingastrongexchangeactionbetweenthemicrolayerandbulkwater.Thea355andSRofCDOMexhibitedsignificantmicrolayerenrichment,withmeanenrichmentfactors(EFs)of1.72and1.62,respectively.

简介：从Changjiang河(长江)河口，Hangzhou海湾，和他们的邻近的水的表面沉积为他们的谷物尺寸分发，器官的碳(OC)集中，和稳定的碳同位素作文被分析(13C)。把分析基于这，大约36件表面沉积样品从各种各样的环境被选择并且分开了成沙(>0.250公里，0.1250.250公里，0.0630.125公里)并且淤泥(0.0250.063公里)由湿筛的分别方法的部分，并且推进进淤泥--(0.0040.025公里)并且泥土大小(<0.004公里)由离心的分别的部分。六个谷物尺寸范畴的沉积为他们的OC和13探索谷物的C内容在学习区域缩放沉积OC的作文和运输路径。从对粗糙的部分好，分别地，OC内容是1.18%，0.51%，0.46%，0.42%，0.99%，和0.48%当时13Cwas21.64,22.03,22.52,22.46,22.36，and22.28分别地。在每个尺寸范畴，OC贡献分别地是42.96%，26.06%，9.82%，5.75%，7.09%，和8.33%。在泥土和好淤泥部分的OC内容(<0.025公里)是大约69.02%。高OC集中主要被发现在近海在Changjiang河河口的东北，在在Changjiang河和Hangzhou海湾的更低的河口的现代沉积，并且在气旋的埃迪的现代沉积现代沉积到济州岛的西南。与13体积沉积的C显示在Changjiang河河口的陆上的器官的材料是搬运朝海的方向并且经由二条小径驱散现代沉积到气旋的埃迪到济州岛的西南：一个人是Changjiang河的结果冲淡的水(CDW)北方江苏沿海的水流和黄海沿海的水流驾驶的向东北的延长分支，当另一个是CDW的结果时台湾温暖的水流驾驶的向南方的延长分支。

简介：Dissolvedandparticulatethorium-234,particulateorganiccarbonintheupper150mofwatercolumnsfromfivestationsinthePrydzBay,theSouthernOceanweredeterminedduringthe22ndChineseNationalAntarcticResearchExpedition(fromNovember2005toMarch2006).Thedisequilibriabetweenthorium-234anditsparenturanium-238inupperlayerwasusedtoderivetheaveragedresidencetimeofthorium-234,whichdecreasedalongwiththelatitudetothesouthandaminimumvalue,1~8dforparticulatethorium-234and29~48dfordissolvedthorium-234,appearedatthemediumlatitudestation,andtheexportfluxesofthorium-234werecalculatedtooandamaximumvalue,0.35~0.63Bq/(m3·d)fortheparticulatethorium-234and0.44~0.65Bq/(m3·d)forthedissolvedthorium-234,appearedatthesamestation.Theexportfluxesofparticulateorganiccarbonatdifferentwatercolumnswerederivedbytwomethodswithirreversiblescavengingmodel,andtheaveragedvalueswere104.7mmol/(m2·d)(Emethod)and120.6mmol/(m2·d)(Bmethod),respectively,indicatingthatarelativelyhighnewproductionwouldexistinsummerinthePrydzBaywhereitwillplayapotentialsignificantroleinsequesteringtheabsorptionCO2todeeperocean.