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1、而DMS/AA却是秋季高于夏季。结合已开展的工作，中国近海AA分布呈现出春夏季高于秋冬季的特征。（4）表层海水AA、AA/Chl-a与温度和盐度均表现出正相关性。AA和AA/（DMSP+AA）与Chl-a并无明显相关性，表层海水DMS/AA与Chl-a有非常显著的正相关性。无论表层海水还是断面分布中，AA均与细菌丰度表现出正相关性。（5）在DMSP降解过程中，观测到海水中有DMSP的降解和AA的生成现象。培养初期，AA的表观降解速率一直大于DMSP，起始浓度越高，降解速率越大，且降解越完全。在AA降解过程中，黑暗条件下起始浓度越高，AA变化速率越大，
2、而光照条件下则恰好相反。光化学反应中前2h表现为AA的光化学生成，而后2h表现为光化学降解。关键词：丙烯酸；黄海；渤海；DMSP；叶绿素aII万方数据Studyonthedistribution,productionandconsumptionofacrylicacidintheYellowSeaandtheBohaiSeaAbstractDimethylsulfide(DMS),asanimportanttracegasintheocean,anditsprecursorβ-dimethylmercaptopropionicacidsalt(DMS
3、P)werethehottopicsinthestudyofocean,however,theresearchofacrylicacid(AA),anotherproductrelatedtotheDMSgenerativeprocesswasalmostblank.DistributionofAAconcentrationsandrelatedparametersintheBohaiSeaandtheYellowSeawerestudiedfrom2011to2013.Wealsosummarizedthespatialandtemporalvar
4、iationsofAAindifferentseaareaanddifferentseasons.FieldsimulationexperimentwasconductedtostudytheproductionandconsumptionofAA.Themainresultsaredrawnasfollows:(1)TheconcentrationofAAinsurfacewaterinsummercouldbe0.258µmol/Lorhigher,whichintheBohaiSeawaslowerthanthatintheYellowSea.
5、AA/Chlorophyll-a(Chl-a)was0.28mol/g,AA/(DMSP+AA)reached0.61.TheproductionrateofAAwouldincreaseintheseaareawhichhaslowertemperatureandhighsalinity.InperipheralwatersfarawayfromtheChangjiangEstuaryAA/Chl-aincreased.AA/(DMSP+AA)showedtheconsistencywithAA,andintheYellowSeaColdWater
6、Massithasminimumvalue.IntheverticalsectionfromChangjiangEstuarytoJejuIsland,thesurfaceAAwasespeciallylow,whereinfluencedbythechangjiangdilutedwater;inthemiddleAAwasveryhigh.ThedistributionofAA/Chl-awasconsistentwithAA.IntheYellowSeaCouldWaterMassverticalsection,AAwashigherinthe
7、surfacewaterthanthatofthebottom,andinthedepthof20m-30msubsurfaceChl-amaximumlayerwasexistedobviously,AAalsohasthisfeature;theAA/Chl-ahadmaximumlayerinthedepthof20m-30m,andinthebottomitalsoveryhigh.InthenorthernYellowSeaandtheBohaiSea,AAinsurfaceishigherthanthatinbottom,whichwas
8、similartoChl-aandAA/Chl-a.DiurnalvariationshowedthatAA
