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《中国沙漠植物志》厚壁荠属,四棱荠属,菘蓝属和独行菜属订正 总被引:1,自引:1,他引:0
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
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I.AssesmentoftheConditionsfortheDevelopmentofIndustriesintheBeijingKowloonEconomicBeltTheenvironmentalconditionsfortheeconom... 相似文献
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Distribution characteristics of planktonic nano-and microalgae in the Prydz Bay and its adjacent Southern Indian Ocean,during austral summer 总被引:2,自引:0,他引:2
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Distributioncharacteristicsofplanktonicnano-andmicroalgaeinthePrydzBayanditsadjacentSouthernIndianOcean,duringaustralsummerZh... 相似文献
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Ecology features of coastal saline lakes related to environmental evolution in the area of Antarctic continental ice edge
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1IntroductionTheAntarcticcoastlineisafectedbytheretreatoftheiceshetwhichbeganaround18000aB.P..Icefreareas,suchastheBungerHils... 相似文献
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DivisionofdesertificationclimatetypesanddeterminationofpotentialrangeofdesertificationinChinaCILongjunWUBoChineseAcademyofFor... 相似文献
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Xiaojian Li Department of Geography Henan University Kaifeng People''s Republic of China 《地理学报(英文版)》1997,(1)
Sincethereformpoliciescommencedin1979,overseasinvestmentinChinahasincreasedrapidly.Chinahasnowbecomethesecondlargestforeigndirectinvestment(FDI)recipientintheworld,exceededonlybytheUnitedStates.BytheendofMarch1996,theforeignfundedenterprisestotalled260,000,andr… 相似文献
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Zheng Feili Tang Keli Zhang Keli Cha Xuan Bai Hongying Northwest Institute of Soil Water Conservation CAS Ministry of Water Resources Yangling Shaanxi People''s Republic of China 《地理学报(英文版)》1997,(2)
Forlongtime,theproblemaboutnaturalerosionandartificiallyacceleratederosionisindispute.HistoricalgeographersconsiderthathumaninducedecoenvironmentaldestructionisaccountablefortheseveresoilerosionandecoenvironmentdeteriorationonLoessPlateau[7,8].Somegeolog… 相似文献
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Song Haokun 《云南地理环境研究》1999,(Z1)
1 IntroductionRuraldevelopmentisthesetofactivitiesandactionstakentogetherbydiverseindi-vidualsandorganisationleadingtoprogress.Differentpeopledefineprogressdifferently:conventionallyitequalstoprogressinmaterials-growthofincomesandwealth.Povertyallevi… 相似文献
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Study of the MSA, nssSO 2- 4 concentration and MSA to nssSO 2- 4 ratio in the
snow/ice and atmospheric aerosols of the regions surrounding the Weddell Sea
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1IntroductionItisnowwelrecognizedthattheoceanicbiogenicsulphurcycleplaysanimportantroleintheforcingofglobalclimate.Dimethylsu... 相似文献
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Characteristics of change in the Antarctic sea ice area and its relation to SST in the tropical
Pacific
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1IntroductionBeforethe1980s,Antarcticinvestigationsandtheirresearchdatawererelativelyfew.Sincethe1980s,alongwiththedevelopm... 相似文献