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1.
INTRODUCTIONNandPinputtedintoJiaozhouBaybyriversandbysewageeffluentsofcities ,havemadetheBaybecomemoreandmoreeutrophicdaybyday .Shen ( 1994)thoughtthatphytoplanktongrowthwaslimitedbythechangefromnitrogentophosphorous ;andthatthesilicateconcentrationinJiaozh…  相似文献   

2.
INTRODUCTIONFromthe1990’s,thescallop,C.farreri,culturedinthenorthernChinaSea,deterioratedinsize,healthandoutputbecauseofhighstockingdensities,shortageofnaturalfoodanddiseases.Massmortalityof50%-90%occurredinJiaozhouBay,Qingdao,andSishiliwanBay,Yantai,fromJulyto…  相似文献   

3.
INTRODUCTIONJiaozhouBayisashallowsemi closedbaywithtotalareaofabout 40 0km2 andaveragewaterdepthof7m .Themaximumwaterdepthisover 5 0matthecenterofthestraitconnectingtotheYellowSea.Thisstraitcenterwateriscalledbaymouthwater,thewaterinthenorthernpartofthestrai…  相似文献   

4.
IntroductionRemediationbynaturalattenuation (RNA)isthepreferredmethodforremediatinggroundwatercontami natedbythearomaticfuelhydrocarbons ,benzene ,toluene ,ethylbenzene ,andxylene (BTEX)etc .(Jef frey ,2 0 0 1) .ButtherearecertainconditionsunderwhichRNAisinadequate…  相似文献   

5.
Fabric and crystal characteristics of Bohai and Arctic sea ice   总被引:1,自引:0,他引:1  
1 IntroductionBohaione yeariceandAntarcticonehavethesimilarsurface featuresandcorre spondingfabricandcrystalcharacteristics (Allison 1 997;Lietal.1 997;Qin 1 991 ) .DuringtheChinaFirstArcticExpedition ,theresultsinthestudyofone yearicefromBohaiandAntarcticwereusedfo…  相似文献   

6.
INTRODUCTIONPollutionofmarineecosystemposesaseriousthreattomarineorganismsandultimatelytheentireecosystem.Inrecentyears,organophosphorous(OP)pesticideshavelargelyreplacedorganochlorinepesticidesbecauseoftheirrapidbreakdowninwaterandtheirlowenvironmenta…  相似文献   

7.
IntroductionXujiaweiziBaxin(XB)oilfieldissituatedinthesouthofDaqingoilfield .Thepayzone ,Putaohuare servoir ,whichiswithsand -shalese  相似文献   

8.
TheBohaibaybasin ,locatedineastrenChina ,isconsideredasabigCenozoiccontinentalriftbasin .Thebasinpossessesdeeperfault -trouth ,goodconsistencyandhugeperspectiveforpetroleumandnaturalgasex ploitationinPalaeogeneandpre -Palaeogenesystems .Thestudyontectonicch…  相似文献   

9.
IntroductionArchaefructus ,theoldestknownangiosperms ,werefoundfromtheUpperJurassicJianshangouFormation (i.e .theformerlowerpartofYi  相似文献   

10.
Bivalveshavetranslucentthinmembranes—thegastricshieldcoversontheleftoftheposteriorstomachwalls;theheadofthecrystallinestylehousedinthestyle sacisrotatedforwardintothestomachtoimpingethefoodonthegastricshield (ZhangandTai,1 961 ) .Itwasreportedthatthegastric…  相似文献   

11.
The‘JournalofGeodesyandGeodynamics’(ItsoriginaltitlewasCrustalDeformationandEarthquake)isanacademicperiodicalmanagedbyInstituteofSeismology ,CSB(ChinaSeismo logicalBureau) ;No .1CrustalDeformationMonitoringCenter ,CSB ;ResearchCenterofGeo physicExploration ,C…  相似文献   

12.
THECHINESEECOLOGICALRESEARCHNETWORKZhaoJianping(赵剑平)(BureauofResourcesandEnvironmentalSciences,theChineseAcademyofSciences,Be...  相似文献   

13.
INTRODUCTIONThegenusPraebebaliawasestablishedbyRathbun ,1 91 1 .Itscarapaceisbroaderthanlongaslongasbroad ,orslightlylongerthanbroad ;theposteriorborderisusuallyarmedwithaspineortu bercleoneachside ,thehepaticandintestinalregionsaredistinctlyelevated ;thechel…  相似文献   

14.
INTRODUCTIONTheJapaneseseabass (LateolabraxjaponicusC&V)distributeswidelyinthecoastalwatersalongtheBohaiSea ,YellowSea ,EastChinaSea,andSouthChinaSea .Asacarnivorousfish ,itoccupiesthehightrophiclevelinthemarineecosystemandhasadaptedtovariousenvironmentalr…  相似文献   

15.
INTRODUCTIONTheSouthChinaSea(SCS)isapartly enclosedoceanbasinoverlaidbyapronouncedmonsoonsurfacewind .Paststudies (Chenetal.,1 991 ;DingandMurakami,1 994 ;Yan ,1 997;LiangBiqi,1 991 ;LiangJianyin ,1 991 )indicatethatahugewarmwaterpooljointlycontributedbythewesternPacific ,ea…  相似文献   

16.
TheJournalofGeoscientificResearchinNortheastAsia (J .Geosci.Res .NEAsia)issponsoredbytheInternationalCentreforGeo scienceResearchand  相似文献   

17.
INTRODUCTIONInthefirstpaperofthisseries (LiandLiu ,2 0 0 2 ) ,wereported 3generawith 7speciesofPontoniinae,collectedbytheJointChinese GermanMarineBiologyExpeditionstoHainanIsland(winterof1 990andspringof 1 992 ) .Thepresentpaperreportsanother 6genera ,with 9species,fromHa…  相似文献   

18.
INTRODUCTIONPenaeusjaponicusisaneuroxybioticpenaeidprawn ,whosepropersalinityrangeforgrowthis2 0 -30andoptimalsalinityrangeis 2 5-30 (WangandLiu ,1 991 ;WangandYu ,1 999) .Ithasgreatosmoregulatiorycapacity (MantelandFamer,1 983) .Butitsbestenvironmentforreproductionanddevel…  相似文献   

19.
PROBLEMSOFRESERVOIRSEDIMENTATIONINCHINAJiangNaisen(姜乃森)FuLingyan(傅玲燕)ChinaInstituteofWaterResourcesandHydropowerResearch,Beij...  相似文献   

20.
1 TheincoherentscattertechniqueTheuseofincoherentscatterradarsasapowerfulground baseddiagnostictoolforstudyingthenear EarthspaceenvironmentbeganwiththefirsttheoreticalpredictionsbyGordon( 1 958) ,andthefirstobservationsbyBowles( 1 958)afewmonthslater .Thereares…  相似文献   

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