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1.
1 TheDistributionandCharacteristicsoftheTFZThenortheasternpartofTFZbranchesintoYilan -ShulanFaultandDunhua -MishanFault (Fig 1) .Yilan-ShulanFaultisastrike -slipfaultandabout 10 0 0kmlong ,extendsNE ,dipstothenorthwestwithdipan gle 70 (,andlocallydipstothesoutheast .…  相似文献   

2.
IntroductionEnvironmentalisotopetracingisoneofthemostlyadoptedadvancedtechniquesinresearchofhydrologicalcycle (ClarkandFritz,1 997;F  相似文献   

3.
1FRACTALTHEORYANDFLOODCALAMITIESThemostregulargeometricobjectswhichcouldbemeasuredbylengthsofspecificityaretheissueofclasica...  相似文献   

4.
INTRODUCTIONSomeω3andω6long chainedpolyunsaturatedfattyacids (PUFAs)havebeenrecognizedasanessentialcomponentsinhumannutrientsduetotheirtherapeuticeffectsandrolesinmaintainingcellmembranesstructure ,fluidityandfunction .AmongthesePUFAs,arachidonicacid (AA ,2 0…  相似文献   

5.
INTRODUCTIONThetoxicityofheavymetalsreleasedintotheenvironmenthasrecentlytriggeredanumberofstudiesaimingattheremovalofmetalionsfromaqueoussolutions (FourestandVolesky ,1 997;FehrmannandPohl,1 993 ;KuyucakandVolesky,1 989) .Itwasfoundthattheaccumulationofheavymeta…  相似文献   

6.
太子河流域西部竹蜓类动物群,以本溪—牛心台地区为最发育,一般可划分为一个共存延限带,一个组合带,后者又可进一步划分为3个组合亚带。ⅡFusulina-Fusulinela组合带3Fusulinacylindrica-F.quasicylindrica组合亚带2Fusulinelaprovectu-Fusulinapseudokonnoi组合亚带1Fusulinaschelwieni-F.mayiensis组合亚带ⅠProfusulinelaparva-Eostafelasubsolana共存延限带Profusulinelaparva系作者等研究辽南竹蜓类并建带的带分子,Eostuffelasubsolana为盛金章教授建立的辽东本溪群下部竹蜓带的带分子,时代为中石炭世早期。Fusulina-Fusulinela组合带代表本区及东北南部最发育的竹蜓类动物群。该带属于中石炭世中—晚期,也是太子河流域最大海侵期。以上二个竹蜓类生物带总体应属于Moscovian阶,时代为中石炭世。  相似文献   

7.
No .1ANewGeochemicalClassificationofElements QiChangmouandL .LynnChyi(1)…………………………………TheFaultBlock’sFrameworkinBoliBasinanditsContro  相似文献   

8.
1 ADVANCINGOFTHEQUESTIONANDCONSTRUCTIONBACKGROUNDOFSUZHOUINDUSTRYGARDENPerroxgavespecialattentiontotheeffectofimportantitemsandconstructionofinfrastructurewhenhediscussedtheproductionofgrowthpole(Li,1988).Lotsofdomesticscholarshavealsoprobedintothi…  相似文献   

9.
Elementscyclingandenergyflowaretheimportantresearchcontentsinecosystemfieldsandresiduade-compositionisthekeyprocessofnutrimentalelementscirculationSWIFTetal.1979.Theresiduade-compositionrateplaysanimportantroleindecidingtheproductivityandbiomassof…  相似文献   

10.
Fromtheendofthenineteenthcenturytothebeginningofthetwentiethcentury,Davis(1899)providederosionalcirculartheory,tookgeomorphiccharacteristicsasthefunctionsoftectonicforcesandtime,dividedgeomorphicgrowthintothreephases:young,middleagedandold,andthenra…  相似文献   

11.
INTRODUCTIONThesinglecellsandprotoplastsofPorphyragametophytebladescoulddevelopintoplantletsdi rectlyorintocallus likecells (ZhaoandZhang ,1 981 ;Polne Fulleretal.,1 984 ;Chen ,1 989;WangandYan ,1 990 ;Galletal.,1 993;Chen ,1 997;MeiandFei,2 0 0 1 ) ,andtheirgrowthanddevelopmentunder…  相似文献   

12.
INTRODUCTIONThehorizontalcurrentintheseaoroceanisamajorfactoraffectingsedimenterosion ,trans port,deposition ,etc.Therefore,mostworkdonewasontheeffectofhorizontalcurrent.Fewo ceanographershavetakennoteoftheinfluenceofverticalcirculationonthesuspendedmatte…  相似文献   

13.
IntroductionArchaefructus ,theoldestknownangiosperms ,werefoundfromtheUpperJurassicJianshangouFormation (i.e .theformerlowerpartofYi  相似文献   

14.
1 INTRODUCTIONNowadaysthedevelopmentofworldindustriesandeconomyischaracteristicofafewconspicuoustrendswhichmaychallengetraditionaleconomicdevelopmentmodelsandtheories.Firstofall,theeconomyoftheworldhasbeenbecominginglobalspace,ofwhichtheremarkablei…  相似文献   

15.
1 THEANALYSISOFSOILEROSIONFACTORSTheintensityofsoilerosioninaridareavarieswithaltitude,moistureandheatconditionandsurfacelayer(Chen,1995).Inmiddleandhighmountainsections,thereisalittlemoreprecipitation(450-796.90mm),richervegetationcovermorethan60pe…  相似文献   

16.
Dynamic variation of nitrogen content in the Second Songhua River   总被引:1,自引:0,他引:1  
ThewaterpollutionintheSecondSonghuaRiverhasbeenpaidmuchattentiontoforalongtime.Manyenvironmentalscientistshavedonealotofresearchworkonit,butmostofresearchcontentsweretofocusonheavymetalpollutionandorganicpollutioninwater,andlittleaboutnitrogen(Fuet…  相似文献   

17.
1IntroductionEarthvisionsoftwareintroducedfromU .S .DGIcompanycanplayanimportantpartinbothspatialgeo logicmodelingandcompilingdifferentmaps .Ontheba sisofrealizingsandbodymodelinganddatainterfacebe tweenDaqingblack -oilandEarthvision ,theFaciestractmodelhas…  相似文献   

18.
Wave assimilation and numerical prediction   总被引:10,自引:0,他引:10  
INTRODUCTIONDataassimilationwasusedinearlynumericalweatherpredictiontoimproveforecastaccuracy.Forecasterrorsresultfromseveralmainresources:thefirstisphysicalapproximationinthedynami calequationsofthemodel;thesecondisthelowqualityoftheinitialconditionsa…  相似文献   

19.
1IntroductionLanduseandcoverchanges (LUCC)andaccompa niedenvironmentalchangessuchassoildegradationbe camemoreandmoreseriousinrecentdecades .There foremanyresearchesinChinaandabroadareengagedinLUCCandsoildegradationstudy ,suchasWuChuan jun,etc .(1994 ) ,FengZhimi…  相似文献   

20.
INTRODUCTIONMicrocystisaeruginosawasthemainbloom formingspeciesinDonghuLake;occurredonlysporadicallyinthe 1 950s,increasedrapidlyinnumberinthe 1 960s.Fromthemiddleofthe 1 970stothemiddleofthe 1 980s,thicklayerofitsbloomcoveredthelakesurfaceeverysummer,attract ingfo…  相似文献   

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