简介：OnthebasisofaninvestigationonthemangrovesinFujianfromNovember1998toJanuary1999,thespeciescomposition,area,distribution,artificialafforestationofmangrovesandthefactorsrestrictingthedevelopmentofmangrovesinFujianarediscussedinthepaper.SomesuggestionsonhowtodevelopmangrovesinFujianhavebeenputforward.

简介：TwelvespeciesofcrustaceanfromFujiancoastwereexaminedforlectinswithdifferentanimalerythrocytes.Serumextractsfromallof12speciesshowedagglutinatingactivityagainstatleasttwotypesoftheerythrocytesused,whichrevealedtheexistenceoflectinsinthesespecies.Therewerefivespecies(Penaeusjaponicus,Lophosquillacostata,Charybdisferiatus,Portunuspelagicus,Scyllaserrata)whoseserumscouldagglutinatealltheerythrocytestested.Thelowestserumproteinconcentrationrequiredtoproduceerythrocytesagglutinationvariedremarkably,rangingfrom0.7μg/mLto8080μg/mL.ThestrongestactivitywasshownintheagglutinationofrabbiterythrocytebyserumofPenaeusvanaminas.Inhibitionassaysperformedwithsevenmono-andbisaccharidesshowedthatagglutinationofquailerythrocytesbyserumsofthreespecies(Portunuspelagicus,ScyllaserrataandSesarmasp.)werenotinhibitedbyanysugars,whileotherswereinhibitedbyatleastthreetypesofsugars.TheassayoftemperatureinfluenceonagglutinatingactivityshowedthatonlyPenaeusjaponicusretainedactivitywhentheserumwasheatedto90℃,andotherserumslosttheiractivityat40℃,50℃,60℃,70℃,80℃for10minutes,respectively.

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简介：Thecomposition,assemblageanddistributioncharacteristicsofheavymineralsfrom63to125μmgrainsizesinsurfacesedimentfromtheXinghuaBay(17stations)arestudied.Themattersourceofsiltandtherelationshipbetweenheavymineralsandsedimentaryenvironmentarealsodiscussed.Theresultsshowthatthereare37kindsofheavymineralsandtheaveragecontentofthemis12.08%,whichexceeds6%comparedwiththeMeizhouBay(5.67%).Thedominantmineralsaremagnetite,hornblende,epidote,ilmenite,hematite,limonite,zirconandsoon.MineralkindsrevealthatthesourcesofsiltinthisbayarethefluvialinputanderodedproductsofbedrockincircumjacentlandandislandsoftheXinghuaBay.However,themattersourcefromoutsidethisbayisless.FourmineralassemblagezonescanbedividedbasedonheavymineralcontentsanddistributioncharacteristicsintheXinghuaBay,whicharenotonlyinfluencedbymattersource,butalsocontrolledbyhydrodynamicconditionandsedimentaryenvironmentintheXinghuaBay.