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1.
MODUcTIONThislistof4pisionidspedesisoneofthecontributi0nstothestudyoflittofalmeiofaunaIp0lychaetesfromtheChinesecoast.ThernateriaIswerecoforduringashortexpeditiontoHainanIslandbyProfB.L.Wu,Mr.F.P.HuangandMr.Z.H.ixngoftheFirstInstituteofdrinography,StatedrinicAdndnisttationinQingdaoandProfDr.W.WeStheideandDr.G.PurschkeoftheUniversityofDenabruckinOct0berl99l,additionalmateriaIsweresamPledbyMr.Z.H.Dinginash0rtexpeditiontoHongkonginJanuary1995.Hithert0,onlyPtrionelevisetoSaZhao…  相似文献   

2.
Three new species of Family Mitridae (Mollusca: Gastropoda) from the South China Sea are described in the present paper. They are Ziba aglais sp. nov. B. LI & S. ZHANG, Neocancilla daidaleosa sp.nov. B. LI & X. LI, and Mitra holkosa sp. nov. B. LI. Their systematic positions are also discussed.  相似文献   

3.
Editor-in-Chief: WEN Shengchang Academician of Chinese Academy of Science, Ocean University of China, P.R.C Deputy Editors-in-Chief: LI Huajun Mar, Eng. Col., OUC, P. R. C SONG Weibo Fisheries Col., OUC, P. R. C LIU Qinyu Phys. & Environ. Oceanogr. Col., OUC, P. R. C WANG Lin Environ. Sci. & Eng. Col., OUC, P. R. C Executive Deputy Editor-in-Chief: PENG Yuan Editorial Office of Journal of Ocean University of China, P.R.C  相似文献   

4.
Two new species of the genus Anthenoides from the southern China are described. A. laevigatus sp. nov. shows affinities with A. epixanthus. A. tenuis sp. nov. is related to A. cristatus (Sladen).  相似文献   

5.
6.
According to loess and palaeosol climatic record, field observation, analysis data and 14C dating, we discuss the climatic changes and the water level fluctuations of Qinghai Lake. It is pointed out that there were four relatively warm and moist stages in Qinghai Lake basin during the Holocene. They formed in the periods from 10,300 yr.B.P. to 8,500 yr.B.P., 7,000 yr.B.P. to 3,500 yr.B.P., 2,800 yr.B.P. to 2,000 yr.B.P. and from 1,300 yr.B.P. up to now. The climate in the Holocene optimum period, from 7,000 yr.B.P. to 3,500 yr.B.P., was much warmer and moister than that today. Polypodium plant grew luxuriantly around Qinghai Lake. The annual temperature was 2.5℃ higher than that today, but there was no forest at Qinghai Lake shore. It is found that there was a good relationship between precipitation and water level fluctuation. In warm and moist period water level was high and in the cold and dry period it was low in the Holocene. There were four high water level periods for Qinghai Lake in the Holocen  相似文献   

7.
Asatypicalmarshriver,theBielahongRiverliesinthehinterlandofthehoiangPlain.ItrisesinandgoeSthroughl~areasofplainma-rsh.Themarshrateinthebasinis45Percent.ThehydrologicalcharacteristicsoftheBielahongRiverbasincanreflectthehydrologicalcharacteristicsofthewholernaxshplain.Thereare1.119x106hamarshintheSanjiangPlain.AlterlOng-timedevelopment,marshisstillthemainnaturallandscapeandsoiltypeintheplain.Waterisoneofthemostactiveelementsinmarshecosystem.Itaffectsplantsgrowth,speciesdistribution,soilfo…  相似文献   

8.
Two new species of the ophiuriod genus Anphilimna from 280 m depth water east of Hainan Island are described . A . sinica sp . nov . shows affinities with A . transacta (Koehler), and A . granulosa is related to A .cribriformis A.M. Clark .  相似文献   

9.
根据地质构造背景、形成机制、物质来源、岩石共生组合,岩体地质、岩石学、矿物学、地球化学和同位素地球化学特征,将山东花岗岩划分为四个成因系列、十个成因类型。即:Ⅰ.前寒武纪地壳改造系列;Ⅰ.1.原地交代型;Ⅰ.2.异地深熔型;Ⅰ.3.大陆板块碰撞型;Ⅰ.4.高级变质型;Ⅱ.同熔系列;Ⅱ.1.结晶分异型;Ⅱ.2.岩浆混合型;Ⅲ.碱性系列;Ⅲ.1.结晶分异型;Ⅲ.2.下部地壳重熔型;Ⅳ.幔源系列;Ⅳ.1.结晶分异型;Ⅳ.2.分熔型。原地交代型按其被改造原岩的性质,可划分为正变质和副变质亚型。  相似文献   

10.
The authors discribed a new polystigmate combination, Gomphonema turris Ehr. var. okamurae (Skv.) Fan et Bao.comb.nov., and two new varieties, Gomphonema tuttis Ehr. vat. latum Fan et Wang. var.nov. and Gomphonema acum/natum var. obtusum Fan et Bao, var. nov., that were distinguished by frustule morphology under LM. The samples were collected from freshwater of Heilongjiang Province, China.  相似文献   

11.
①TheprojectsupportedbytheNationalNaturalScienceFoundationofChina.Mountainglacierisaproductofmutuallyjointactionofclimateandtopography.AtthisPOint,climaticchangemakeglacieradapttoitschangethroughadjustingglacierareaandlengthfollowingtheglacierinnermovementlaw.Intheory,glacieralwayscorreSpondstoastablestateunderacertainclimaticcondition.Becauseoflimitationoftheglaciermovementlaw,theglacierhastograduallyadapttOclimaticchange.Also,climateisalwaysinchange.So,itisalmostimPOSSibleforglaciertor…  相似文献   

12.
1INTRODUCTIONThegenusTinocladiaKylinderivedfromthege nusEudesmeJ.Ag.,wasestablishedbyKylinin1 940 .Untilnow ,fivespecieshavebeenreported .Threespecies,T .crassa (Sur.)Kylin(byC .K .Tseng,1 983 ) ,T .gracilisDingetLuandT .mi crosporangiiDingetLu (byDingetal.,2 0 0 4)inthegenusTinocladiahadbeenreportedtodate.Inthecourseofourinvestigationonthespecimensofthege nusTinocladiacollectedfromtheYellowSeacoastsandkeptintheHerbariumoftheInstituteofOceanolo gy,ChineseAcademyofSciences,twomo…  相似文献   

13.
NEW TAXA OF EUGLENOPHYTA FROM CHINA   总被引:1,自引:0,他引:1  
Eight new taxa of Euglenophyta are described in this paper. They were collected from severalprovinces in China and respectively named Euglena allorgei var. exsulcata. E pisciformis var. globosa, E.tortiliS, Lepocinclis glabra var. papillata, Phacus pisiformis, Ph.strombuliformis,Ph.trimarginatus var.truncatus and Astasia angusta.  相似文献   

14.
The sea fluxes of trace metals, POC, and settled material were studied in anoxic sea water, Saanich Inlet, B.C., Canada with sediment traps. This paper discusses the change of mass fluxes of sediment, trace metals and POC for various seasons and depths. The annual mean of settled material is 1.56 g.m-2 .a-1, 84.6 mg. m-2. a-1 for POC, 60.0 mg.m-2. a-1 for Cu, 16.5 mg.m-2.a-1 for Pb, 189 mg.m-2. a-1 for Zn, 2.20mg.m-2.a-1 for Cd,699 mg.m-2.a-1 for Fe,38.8 mg.m-2.-1 for Co, and 84.6 mg.m-2.a-1 for Ni.The relations between the average fluxes of trace metals and POC, the fluxes of trace metals and settled matter, and the sea fluxes of trace metals and Fe are in linear progression. The resident times of elements as calculated from sea flux, are 1.1 a. for Cu, 0.014 a. for Pb, 0.50 a. for Zn, 3.8 a. for Cd, 0.16 a. for Fe, 0.39 a. for Co,and 1.14 a. for Ni.The order of resident times is as follows: Pb-Fe-Co-Zn-Cu-Ni-Cd. The metal resident times in Saanich Inlet are shorter than the values estimated for the op  相似文献   

15.
1imLI~areMoraXGIOna~~NT1'RegionalinfferentiationandRegionalSustainableDevelOPmentEveninancienttimes,Chinesehadtheideaofregionaldifferentiation.Nearly4000yealsago,Xiayu,theXiaDynaStyemperor,dividedChinaintonineterritoriesaccordingtodifferentpeOPleandlandfonnations.Inthisway,theconceptOfregionalsustainabledevelOPmentgraduallygrew.Itiselntheiedinnumerouspeasants'proverbswhichholdtothisday.TheconceptwassucceSSfullyappliedtOthecultivationofdeltasandthefO~tionofdeltaciviliZation.2.Delta…  相似文献   

16.
Determination of apparent sampling thickness of sea surface microlayer   总被引:5,自引:0,他引:5  
IwrRODUtvIONTheseasurfacendcrolayer(SML)isathinair-seainterfacelayerwithphySical,chdricalandbiologicalproperties.OrganicmateriaIs,haceAnIs,nutrientS,particulatCrnat-terandplanktonaregenefallyenrichedintheSML(Hardy,JT.etal.,l98O,Wunams,P.M.etal.,1986).ThesamPlersforcolledingtheSMLwerernainlyglassplatespearvey,G.W.etal.,l972,l985;ZhangZhengbinetal.,l996),rotatingdrums(Harvey,G.W.,1966,Daumas,R.A.l976),screensgurmt,W.D.,l965,Piotrowicz,S.R.etal.,l972,Carison,D.J.,l982),funneIs…  相似文献   

17.
Pacificincolidaefam .novColonyincrustingorincrusting erect,usuallyunilaminar.Frontalwallsofcryptocystaldevelopmentevenlyperforated .Orificemoreorlessbell shaped,longerthanwide,withasemiellipticalanterandastraightorcurvedproximalborder,conspicuouslyconstrictedatbothsidesproximaltothecondyles,andwithoutoralspines.Ascussubcircularorcircular,situatedwithinasuboralumbo.Aviculariausuallywanting,sometimespresent.Hyperstomialovicellsgranulated ,imperforate,andclosedbythezooidaloperculum .Multiporous…  相似文献   

18.
Three new species of Batrachospermum Roth (Batrachospermales, Rhodophyta) from China are described in this paper. B. yunnanense sp. nov. has long-cylindrical trichogynes with long stalks and is diagnostic of section Virescentia. Within this section, B. yunnanense is similar to B. helminthosum Bory emend. Sheath et al., but it is dioecious and has curved carpogonial branches, while the latter is monoecious and has straight carpogonial branches. It is also similar to B. transtaganum Reis, but it differs from the latter in long carpogonia,big carposporophytes and carposporangia. It is considered that B. nothocladoideum sp. nov. is assigned to section Contorta, subsection Kushiroense, because its carpogonial branches are twisted and gonimoblast filaments are loosely agglomerated. This new species similar to B. iriomotense Kumano, but with short fascicles, long-ovoid or subpyriform cells, numerous terminal hairs, long-ellipsoid trichogynes, big carposporophytes and small carposporangia. The plant is quite tough and cartilaginous and similar to Nothocladus in gross morphology, but its carposporophytes are compact instead of diffuse. This shows that it may be a transitional species between section Contorta and genus Nothocladus. So, B. transitorium sp. nov. should belong to section Contorta, subsection Kushiroense, because of its curved or twisted carpogonial branches and loosely agglomerated gonimoblast filaments, with globose or subglobose cells in fascicles similar to B. spermatiophorum Vis et Sheath, but no colourless spermatiophores. In terms of small and numerous carposporophytes, B. transitorium sp. nov. is similar to some species of section Batrachospermum. However, their other features are unique, indicating its transitional nature between section Contorta and Batrachospermum.  相似文献   

19.
1 IntroductionAnicecoreobtainedfrom polarglaciersoricesheetsisoneofthemostimportantarchivestoreconstructpaleoclimaticandpaleoatmosphericcondition .Informationonpale o environmentcanbeextractedfromicecoresaschemicaland/orphysicalsignals.Amongthechemicalsignals,heavymetalsarenotedassignalsofterrestrialenvironmentalchangeandanthropogenicpollution (e.g .Murozumietal.1 969;NgandPatterson 1 981 ;Hongetal.1 994) .SinceconcentrationsofmostofthemetalsinpolarsnowincentralGreen landareatorbelowthepptl…  相似文献   

20.
CHARACTERISTICS OF THE OXYGEN REDUCTIONIN ATMOSPHERIC CORROSION   总被引:1,自引:0,他引:1  
ImODUcrlONArnaorandnowincreasinglyimPoftantprobleminthemanyyearsinvestigationsofabosphericcormsionofmetaIsandalloyisthatthecormsionrmctionunderathineleCtrolytelayerchangessigwhcanhywithdrying.Tornashov(l966)reportedthatthecorm-sionrateisinfluentalbytheelamlytelayerthwhnessandiscontrolledbythedtheion-lndtingcurrentofoxygenreduCtionreig.l)whentheel~lytefilmisthickerthanthediffUSionlayerthickness.ThereforetherateisnotaffededbytheelCCtrolyteFilmthwh-nessforthecaseofaverythickFilm,e.g.regionI…  相似文献   

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