简介：Ｉｎｔｅｒａｃｔｉｏｎ　ｂｅｔｗｅｅｎ　ｔｗｏ　ｐｏｌａｒ　ｃｏｌｄ　ｓｏｕｒｃｅ　ａｎｄ　ｔｒｏｐｉｃａｌ　ｏｃｅａｎ　ｈｅａｔ　ｓｏｕｒｃｅ　ｅｆｆｅｃｔｉｎｇ　ｇｌｏｂａｌ　ｃｌｉｍａｔｅ　ｃｈａｎｇｅＸｉｅＳｉｍｅｉ，ＢａｏＣｈｅｎｇｌａｎａ...

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简介：在这研究，我们在在Sanggou海湾从文化区域收集的核心沉积估计了埋葬流动和碳的不同形式的来源约会，并且preliminarily为无机的碳埋葬流动的更大的比例分析了原因(BFTIC)。在Sanggou海湾的全部的碳(TC)的平均内容是2.14%。全部的器官的碳(TOC)在TC说明了一个小比例，哪个中的超过65%个源于源自陆地的器官的碳(Ct),并且当时导出水兵的器官的碳的比例(C自从大规模水产业的开始，)显著地增加了。全部的无机的碳(TIC)在挥舞从贝导出的小自然贝壳的时期(18801948)期间与最大值说明了TC，其一般水准是60%，的60%75%直到90%无机的碳(Shell-IC)。TC埋葬流动从31g/(m2e范围6.61orming和解释费用。为所有图象的严厉级别被一样执行20raters，2weeks分开，并且与图象演讲的顺序使随机化。Intra老鼠testretest可靠性，内部老鼠的可靠性，和构造有效性被分享的多范畴多老鼠kappa统计决定。残余级别为为沟的intra老鼠可靠性是优秀的(kappa=0.957吗？？

简介：钻的井表明中新世的海洋的来源在Qiongdongnan盆的浅水区域摇的有机物许多与差的烃产生潜力是相对低的。然而，在一些钻深水区域结束的井到中央消沉带，有更好的有机物丰富的中新世的海洋的来源岩石和烃产生被发现了特征，它完成了基于geochemical的分析标准的更好的来源岩石。尽管在研究区域的深水区域没有探索的井，通过几口典型的探索的井的geochemical数据的比较分析分别地从在盆的浅水区域，在盆和地点的深海的区域的中央消沉带边缘深海在华南海盆钻中的1148个，它表明来源岩石的质量的趋势从三角洲逐渐地变得积极到bathyal环境，它然后是变得否定在de由于陆上的有机物输入的缺乏，在Qiongdongnan盆的中新世的海洋的来源岩石的重要控制因素是有机物的海洋生产率和保藏条件。元素地球化学数据显示paleoproductivity的趋势和有机物的保藏条件从浅区域作为水深度增加变得积极到bathyal区域结束到中央消沉带。必须在那里存在，这因此被推测在保藏有机物调节的中央消沉区域的高质量的来源岩石是好一些的。而且在理论，在在水深度的海洋的环境的缺氧地区4001000m，有机物的保藏条件因此很好正在形成高质量的海洋的来源岩石。产生推测，认为在Qiongdongnan盆的bathyal环境有高烃产生潜力来源岩石是合理的，特别在水深度4001000m。

简介：TheEastChinaSea(ECS)isariver-dominatedepicontinentalsea,linkingtheAsiancontinenttothenorthwesternPacificviathelargeriversoriginatingfromTibetanPlateau.TherelevanthugeinfluxofriverinedetritushasdevelopeduniquesedimentarysystemsintheECSduringtheQuaternary,offeringidealterrestrialarchivesforreconstructingQuaternarypaleoenvironmentalchangesandstudyingland-seainteractions.Overall,twocharacteristicriversystemsdominatethesedimentarysystemsandsedimentsourcetosinktransportpatternsintheECS,representedbytheChangjiang(YangtzeRiver)andHuanghe(YellowRiver)forthelargeriversystemandTaiwanriversforthesmallriversystem.Giventhis,thesedimentsderivedfrombothriversystemsbeardistinctfeaturesintermsofparentrocklithology,provenanceweatheringandsedimenttransport.Previousstudiesmostlyfocusoneitherthe‘source’discriminationorthe‘sink’recordsofthesedimentarysystemintheECS,whilethesourcetosinkprocesslinkingthelandandsea,inparticularitstimescale,hasbeenpoorlyunderstood.Hereweintroduceanewly-developeddatingtechnique,the‘comminutionage’method,whichoffersaquantitativeconstraintonthetimescaleofsedimenttransferfromitsultimatesourcetothefinaldepositionalsink.Thisnovelmethodisofgreatsignificanceforimprovingourunderstandingontheearthsurfaceprocessesincludingtectonic-climatedrivenweathering,andsedimentrecyclinginrelationtolandscapeevolutionandmarineenvironmentalchanges.TheapplicationofcomminutionagemethodintheECSwillprovideimportantconstraintsonsedimentsource-to-sinkprocessandmoreevidencesfortheconstructionoflateQuaternarypaleoenvironmentalchangesundertheseuniquesedimentarysystems.更多还原

简介：Anexperimentwasdesignedtoselecteconomicallyvaluablemacroalgaspecieswithhighnutrientuptakerates.Suchspeciesculturedonalargescalecouldbeapotentialsolutiontoeutrophication.Threemacroalgaespecies,Ulvapertusa(Chlorophyta),Gelidiumamansii(Rhodophyta)andSargassumenerve(Phaeophyta),werechosenfortheexperimentbecauseoftheireconomicvaluesandavailability.ControlandfournitrogenconcentrationswereachievedbyaddingNH4andNO3.Theresultsindicatethatthefreshweightsofallspeciesincreasefasterthanthatofcontrolafter5dculture.ThefreshweightofUlvapertusaincreasesfastestamongthe3species.However,differentspeciesshowdifferentresponsestonitrogensourceanditsavailability.TheyalsoshowtheadvantageofusingNH+4thanusingNO-3.U.Pertusagrowsbestandshowshighercapabilityofremovingnitrogenat200μmolL-1,butithaslowereconomicalvalue.G.Amansiihashighereconomicalvaluebutlowercapabilityofremovingnitrogenat200μmolL-1.ThecapabilityofnitrogenassimilationofS.EnerveishigherthanthatofG.Amansiiat200μmolL-1,buttheformer'sincreaseoffreshweightislowerthanthoseofothertwospecies.Thenpresentpreliminarystudydemonstratesthatitispossibletousemacroalgaeasbiofiltersandfurtherdevelopmentofthisapproachcouldprovidebiologicallyvaluableinformationonthesource,fate,andtransportofNinmarineecosystems.Cautionisneededshouldweextrapolatethesefindingstonaturalenvironments.