简介：OnthebasisoftheresearchofDObudgetorkineticsinshrimppond,themaininfluenceprocessofDOanditsseasonalvariationsarequantitativelydescribedthroughredividingthebudgetprocessandmodifyingthequantitativemethodoftheprocess.Thepercentagesofoxygendemandofvariousprocessesinthetotaloxygendemandaredifferentinshrimpcultivationseasons.Itisshowedthatthedissolvedoxygendemandofmini-organismsisthemajoraffectedfactorofDOinthisenvironmentandapproximatelyaccountsfor64.1～74.1%ofthetotaloxygendemand.Intheearlyperiodofshrimpculture,thedissolvedoxygendemandofallotrophicbacteriadegradingorganicmattersismuchlowerthanthatofphytoplanktonrespiration.Butinthemidterrnandlaterperiod,itisabout50%ofthetotaloxygendemandbecauseofthehigherwatertemperatureandmoreseriousself-pollution.Thedissolvedoxygendemandofsedimentislowerandjust19.1～28.8%,whilethepercentageofshrimpoxygendemandislower.TheeffectofphytoplanktononDOinshrimpculturingwaterhasdualism.Oneistheoxygenproducingprocessofphotosynthesisandtheotheristheoxygenconsumptionprocessofrespiration.Itisestimatedthatthedissolvedoxygendemandofphytoplanktonrespirationisapproximatelyone-fifthoftheoxygenproducedbyphotosynthesisundernormalilluminationconditions.Thedissolvedoxygendemandofallotrophicbacteriadegradingorganicmattersandthetotaloxygendemandofsedimentincrease4timesand1.7timesrespectivelyfromtheearlyperiodtothemidtermandlaterperiod.Obviously,theDOofculturingwatercanbealsogreatlyimprovedbycontrollingtheselfpollutionoforganicmattersduringshrimpculture.

简介：Biogeochemicalcharacterofdissolvedinorganicnitrogenandphosphateatplumefrontisstudiedbasedonthedata,whichwereobservedintheChangjiangRiverEstuaryin1988.Theresultsareasfollows:Theconcentrationsofnitrateandphosphatechangeabruptlyatplumefrontandhalocline.TheconcentrationsofNO-2andNH+4areveryhighat10～25mdepth.TheverticalcircumfluencetransportsNO-3andPO3-4,whicharereleasedfromorganismsatthebottomtophytoplankton.

简介：根据在第4中国国家北极研究远征期间在Bering海获得的数据，溶解的氧的分发()被学习，它的最大的集中的原因被讨论，并且在之间的关系并且另外的参数例如咸度，温度，并且叶绿素一被分析。结果证明集中在Bering海盆从0.53～12.05mg/L。上面的水包含了高集中，最大值从20～50m发生在深度范围。当深度比200m深并且从500～1000m在深度范围到达了最小时，集中很快减少，然后慢慢地增加了，深度增加，但是仍然在底层保留了。在架上，DO集中与10.75mg/L的吝啬的价值从6.53～16.63mg/L，并且显示出从北方减少到南方的一个特征。集中在在Bering海和劳伦斯岛之间的区域是更高的并且在在62的纬度的劳伦斯岛的东南和西南是更低的??猯'T伾搠獩牴扩瑵潩?慰瑴牥獮椠?楤晦牥湥?慬敹獲漠?潢桴猠瑩獥

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：BasedonthesurveydatafromtheprogramMultidisciplinaryExpeditiontoNanshaIslandsSeaArea,thedistributionofdissolvedinorganicphosphate(PO43--P)intheseawaterofNanshaIslandsSeaAreaiscomprehensivelyanalyzedinthispaper.TheresultsshowthatPO43--PconcentrationintheseawaterofsoutheasternNanshaIslandsSeaAreaiscommonlyhigherthanthatintheotherseaareas;theverticaldistributionofPO43--Pconcentrationvariesinconspicuouslyindifferentseasons;theconcentrationofPO43--Pincreaseswithwaterdepthandchangesmostgreatlyinthelayerof50～100m.ThediurnalvariationofPO43--Pconcentrationdiffersindifferentseasonsandatdifferentobservationstations.ThedistributionandvariationofPO43--Pconcentrationresultfromthephysicalandbiologicalprocessestogether.

简介：水样品从2002年8月在四巡航以后在Changjiang河口的沿海的区域被收集到2003年5月。溶解的无机的砷(DIA)的季节变异分布被分析。结果证明DIA的分布被陆上的输入和自台湾东面的菲律宾海流向日本的暖流表面下的水(KSSW)的侵入主要影响。全部的溶解的无机的砷(TDIA)的Theconcentration从冬季连续地减少了到夏天，当它在秋天增加了时。TDIA的分布与咸度显示出一些关系并且推迟了微粒物质(SPM)。在DIA种形成之间的关系(包括亚砷酸盐[作为(Ⅲ)]并且砷酸盐[作为(Ⅴ)])，生物活动和磷酸盐的可获得性为巡航2002年8月在学习区域被调查。比率作为(Ⅲ)/TDIAs与磷酸盐集中的减少增加了。在底部水里，同样(Ⅲ)/TDIAs比率与增加N/P减少了。TDIA的集中减少了在有害海藻的花蕾(HAB)的出现以后的28.7%approximately因为由水藻的砷酸盐的举起。进一步的学习在有害海藻的花蕾的出现期间在他们的垂直或水平的侧面和举起机制关于砷来源/水池关系被需要。

简介：HeavymetalconcentrationsweremeasuredintheChangjiangEstuaryanditsadjacentwaters.ResultsfromasystematicsurveyinApril2002toMarch2003indicatethattherangesoftheconcentrationsofdissolvedcopper,lead,zincandcadmiuminthestudywatersare1.01~6.86,0.10~0.39,3.17~9.12and0.011~0.049μg/dm3,respectively.Similartozinc,thebehaviorofdissolvedcopperwasessentiallyconservative,buthighscatterhasbeenobservedforhighsalinitysamples,whichcanbeattributedtothedecompositionormineralizationoforganicmatterbybacteria.Dissolvedleadmayhaveactivebehaviorwithanadditionathighsalinity.Overallconcentrationsofdissolvedcadmiumincreasewithsalinity.Themeanvaluesofthesedissolvedmetalscalculatedforthesurfacewaterswerehigherthanthoseforthemiddleandbottomones.Externalinputsofdissolvedheavymetalstothesurfacewaterswerethelikelyexplanationforthesehighervalues.Themaximumseasonalaveragevaluesofdissolvedcopperandzincwerefoundinsummer,reflectinghigheramountsofriverineinputinthisseason.Incontrast,themaximumseasonalaveragevaluesofdissolvedleadandcopperwerefoundinwinterandthelowestonesinsummer,respectively,whichmightbeassociatedwithacombinationoflowconcentrationwithheterogeneousscavenging.ConcentrationsofthesedissolvedmetalsfoundfortheChangjiangEstuaryfallintherangeobservedfortheotherestuariesbutarenoticeablyhigherthanthosefromuncontaminatedrivers,exceptforcadmium.ComparedwithobservationsfortheChangjiangEstuaryinthelasttwodecades,itisclearthattheChangjiangestuarinewatershasbeencontaminatedwithcopper,lead,zincandcadmiumduringChina'sindustrialization,butconcentrationsofthemhavedecreasedinthelastfewyears.

简介：OnthebasisofdatacollectedintheJiaozhouBayinJuneandJuly2003,theDICdistributioninseawaterisstudied,andanaverageair-seafluxofCO2isestimated.TheresultsshowthatthecontentofDICinsidethebayismarkedlyhigherthanoutsidethebayinJune,butthecontentofDICoutsidethebayismarkedlyhigherthaninsidethebayinJuly.ThetrendofDICdistributioninsidethebayissimilar,viz.thecontentisthemaximuminthenortheast,thendecreasesgraduallytowardthewest,andthecontentistheminimuminthewest.Thetotaltrendofverticaldistributionistoincreasegraduallyfromsurfacetobottom.ThischaracteristicofDICdistributionisdeterminedbyJiaozhouBayhydrologyandthereisacloserelationbetweenDICandparticulateN,P.AverageCO2fluxacrossthesourceforatmosphericCO2inJuneandJuly,andthetotalCO2fluxfromseawaterintoatmosphereisabout740tinJuneand969tinJuly.

简介：Changjiang河口和它的邻近的水在中国形成最重要的河口和沿海的区域之一。多，来源和长期的数据被装配检验溶解的氧的时间空间的分发特征()在为过去的Changjiang河口和它的邻近的水50一。结果证明在不同季节的表面的DO集中通常保持稳定，当在冬季的DO集中为最后显示细微增加时50一。确实从6～8mg/L在冬季，并且在夏天和秋天平均集中，春天从7～11mg/L变化。Hypoxic价值首先出现在5月，并且低价值羽毛能沿着浙江和福建省的沿海的区域在春天在底部上被观察，中国。在夏天，羽毛向北方进展，并且北横断的hypoxic紧张比南部的横断高得多。直到秋天，组织缺氧区域渐渐地逐渐减弱，并且完全消失在冬季。在内持续50一，在Changjiang河口的组织缺氧和它的邻近的水开始出现在1980年代。自从2000，组织缺氧的度严重增加了，分发深度变得更小。它基于大量历史的数据被执行，并且研究结果将意义大在Changjiang河口附近在组织缺氧的动态发展推进学习。

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：