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 共查询到20条相似文献,搜索用时 545 毫秒
1.
张秀伏 《中国沙漠》1999,19(1):91-93
通过对中国沙区厚壁荠属PachypterygiumBunge、四棱荠属GoldbachiaDC.、菘蓝属IsatisL.和独行菜属LepidiumL.植物的研究,认为《中国沙漠植物志》收录的密花厚壁荠PachypterygiumdensiflorumBunge和多茎厚壁荠P.multicaule(Kar.etKir.)Bunge实为一种植物;短梗四棱荠Goldbachialaevigata(M.B.)DC.var.ikonnikovi(Vass.)KuanetY.C.Ma应合并到正种四棱荠G.laevigata(M.B.)DC.中;毛三肋菘蓝IsatiscostataC.A.Meyvar.lasiocarpa(Ledeb.)N.Busch应改为毛果菘蓝I.tinctoriaL.var.Praecox(Kit.)Koch.;头花独行菜LepidiumcapitatumHook.f.etThoms.中国沙区无分布。  相似文献   

2.
I.AssesmentoftheConditionsfortheDevelopmentofIndustriesintheBeijingKowloonEconomicBeltTheenvironmentalconditionsfortheeconom...  相似文献   

3.
PsychologicalchangesoffifteenChineseAntarcticResearchExpeditionmembersXueZuohong(薛祚)(DepartmentofPsychology.PekingUndersity,B...  相似文献   

4.
《地理学报》1999,54(5)
1 ArticleID:inthefirstlineofthearticle.Code2375-5444(1999)05-0056-08MeaningISSNYearNoStartpageTotalpages2 CLCnumber:ChineseLibraryClassificationnumber3 Documentcode:CodeABCDEMeaning Paper,GeneralReviewAppliedtechniqueAcademyguideInformation,Academyac…  相似文献   

5.
ThechemicalcharacteristicsofseawaterinthePrydz Bay,AntarcticaWangYuheng(王玉衡);DengHengling(董恒霖)andRenDianyong(任典勇)(SecondInsti...  相似文献   

6.
本文报道了南极乔治王岛3种藓类植物染色体的研究结果:1.钩枝镰刀藓[Drepanocladusuncinatus(Hedw)Wavrst.]的染色体数为14;2.[Chorisodontiumaciphylumg(Hook.)etWilsBroth.]的染色体数为10;3.高山拟金发藓[Polytrichastrumalpinum(Hedw.)G.Sm.]的染色体数为7。  相似文献   

7.
ENVIRONMENTALCONSIDERATIONOFTHEACTIVEBOOMINGDUNESINBADAINJARANDESERTINCHINA——RelationtotheSingingSandBeachesinJapanShigeoMIWA...  相似文献   

8.
Distributioncharacteristicsofplanktonicnano-andmicroalgaeinthePrydzBayanditsadjacentSouthernIndianOcean,duringaustralsummerZh...  相似文献   

9.
王自磐 《极地研究》1998,9(2):55-62
1IntroductionTheAntarcticcoastlineisafectedbytheretreatoftheiceshetwhichbeganaround18000aB.P..Icefreareas,suchastheBungerHils...  相似文献   

10.
DivisionofdesertificationclimatetypesanddeterminationofpotentialrangeofdesertificationinChinaCILongjunWUBoChineseAcademyofFor...  相似文献   

11.
SilicaoxygenisotoperecordofcorePC10diatomsfromtheBransfieldStrait,Antarcticaanditsapplicationinsedimen┐tologyDuanWeiwu(段威武)an...  相似文献   

12.
仲学锋  王荣 《极地研究》1995,6(1):58-72
ReproductivecharacteristicsofAntarcticKrill,EuphausiasuperbaDana,inthePrydzBayregionZhongXuefeng(仲学锋)andWangRong(王荣)(Institut...  相似文献   

13.
ChemicalcharacteristicsofsummerprecipitationatPointBarrow,ArcticAlaskaHouShugui(侯书贵)andQinDahe(秦大河)LanzhouInstituteofGlaciol...  相似文献   

14.
TwotypesofionosphericdisturbancesintheauroralregionShenChangshou(沈长寿)DepartmentofGeophysics,PekingUniversity,Beijing100871,C...  相似文献   

15.
(段威武)(钟和贤)(李扬)LateQuaternaryglacial-marinesedimentationintheBransfieldStraitoffnortheastAntarcticPeninsula¥DuanWeiwu;ZhongHex...  相似文献   

16.
Sincethereformpoliciescommencedin1979,overseasinvestmentinChinahasincreasedrapidly.Chinahasnowbecomethesecondlargestforeigndirectinvestment(FDI)recipientintheworld,exceededonlybytheUnitedStates.BytheendofMarch1996,theforeignfundedenterprisestotalled260,000,andr…  相似文献   

17.
Forlongtime,theproblemaboutnaturalerosionandartificiallyacceleratederosionisindispute.HistoricalgeographersconsiderthathumaninducedecoenvironmentaldestructionisaccountablefortheseveresoilerosionandecoenvironmentdeteriorationonLoessPlateau[7,8].Somegeolog…  相似文献   

18.
1 IntroductionRuraldevelopmentisthesetofactivitiesandactionstakentogetherbydiverseindi-vidualsandorganisationleadingtoprogress.Differentpeopledefineprogressdifferently:conventionallyitequalstoprogressinmaterials-growthofincomesandwealth.Povertyallevi…  相似文献   

19.
韩建康 《极地研究》1999,10(1):12-20
1IntroductionItisnowwelrecognizedthattheoceanicbiogenicsulphurcycleplaysanimportantroleintheforcingofglobalclimate.Dimethylsu...  相似文献   

20.
陈锦年 《极地研究》1999,10(1):69-75
1IntroductionBeforethe1980s,Antarcticinvestigationsandtheirresearchdatawererelativelyfew.Sincethe1980s,alongwiththedevelopm...  相似文献   

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