共查询到20条相似文献,搜索用时 38 毫秒
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I.INTRODUCTIONCitiesarethesymbolsofhuman’scivilization,thespatialcariersofeconomyandthesourcesofregionaleconomicactivities(Gu... 相似文献
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王克林 《中国地理科学(英文版)》1998,(3)
I.INTRODUCTIONItisgeneralyacceptedthatthedegradationofrenewableresourcesandfragileenvironmentsindevelopingcountriesisbecomin... 相似文献
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赵剑平 《中国地理科学(英文版)》1994,4(1):81-94
THECHINESEECOLOGICALRESEARCHNETWORKZhaoJianping(赵剑平)(BureauofResourcesandEnvironmentalSciences,theChineseAcademyofSciences,Be... 相似文献
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THE PRECIPITATION INFILTRATION AND RUNOFF RECHARGING EXPERIMENT OBSERVATION IN THE TAKLIMAKAN DESERT
1 INTRODUCTIONThelocalprecipitationismostimportantavailablefreshwatersourceindeserts.TheTaklimakanDesertbelongstoanextremearidbelt.Accordingtoafewyears’limitedobservationdata,itisestimatedthattheprecipitationshouldbeintherangeof30-50mmannually.Howev… 相似文献
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刘天仇 《中国地理科学(英文版)》1995,5(4):344-354
STUDIESONWATERSTAGEFLUCTUATIONOFYAMZHOLAKEINXIZANGLiuTianchou(刘天仇)(TibetanBureauofWaterResourceandHydrologicalSurvey,Lhasa350... 相似文献
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PROBLEMSOFRESERVOIRSEDIMENTATIONINCHINAJiangNaisen(姜乃森)FuLingyan(傅玲燕)ChinaInstituteofWaterResourcesandHydropowerResearch,Beij... 相似文献
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RESEARCH ACTIVITIES ON LAND USE/COVER CHANGE IN THE PAST TEN YEARS IN CHINA USING SPACE TECHNOLOGY 总被引:8,自引:0,他引:8
1 INTRODUCTIONTherecentandfuturedevelopmentofspacebasedremotesensingtechnologyhasbroughtareformationtoresearchworkaswellasformulatingsuitablepolicyforpopulation,resources,environmentanddevelopment.Throughrealtimeandperiodicobservationsofalargear… 相似文献
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The flux of land-based source pollutants from tumen river system entering the sea of Japan 总被引:1,自引:0,他引:1
I.INTRODUCTION“Agenda21”recognizestheimportanceoflandbasedsourcepolutantstomarinepolution.Coastalwaterisofgreatsignificance... 相似文献
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SEVERAL PROBLEMS ABOUT THE ECO ENVIRONMENTAL RESEARCH ON THE SOURCE REGIONS OF THE CHANGJIANG RIVER AND THE HUANGHE RIVER 总被引:1,自引:1,他引:0
1 INTRODUCTIONInrecentyearstheecoenvironmentoftheChangjiangRiverbasinsufferedfromseveredestruction,sedimentcontentintheriverwatergreatlyincreased,thedownstreamcoursewasseriouslysiltedupandfloodcontrolcapacitywasweakened.Thesimilarsituationalsooccu… 相似文献
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UTILIZATIONANDSUSTAINABLEDEVELOPMENTOFISLANDMOUNTAINSINCHINA①ZhangYaoguang(张耀光)YangYinkai(杨荫凯)InstituteofMarineResources,Liao... 相似文献
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TheSonghuaRiver,oneofthemajorriversinNortheastChina,hastwosources:thenorthsourceistheNenjiangRiverandthesouthsourceistheSecondSonghuaRiver.ThetrunkstreamoftheNenjiangRiver,risingatthesouthernfootoftheYilehuliMountain,is1370kmlonganditswatershedareais… 相似文献
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1INTRODUCTIONManywesternscholarssuchasChangSendou(1963),ChengTiejunetal.(1994),andSkinnerG.W.etal(1977)puttheirresearchintere... 相似文献
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1INTRODUCTIONSeverewaterpolutionandwaterresourcesshortageshavebecometwokeyobstructionstorealizesustainableutilizationofwate... 相似文献
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刘允芬 《中国地理科学(英文版)》1995,(1)
THEIMPACTOFTHECONTEMPORARYCLIMATICCHANGEONCHINASTHERMALRESOURCES¥LiuYunfen(刘允芬)(CommissionforIntegratedSurveyofNaturalResourc... 相似文献
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陈亚宁 《中国地理科学(英文版)》1999,9(4):373-376
1 THEANALYSISOFSOILEROSIONFACTORSTheintensityofsoilerosioninaridareavarieswithaltitude,moistureandheatconditionandsurfacelayer(Chen,1995).Inmiddleandhighmountainsections,thereisalittlemoreprecipitation(450-796.90mm),richervegetationcovermorethan60pe… 相似文献
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INTRODUCTIONTheproductionofphytoplanktonisthefirsttacheintheproductionbymarineorganismsandinthemarinefoodchain .Knowledgeofprimaryproductioninmarinewatersisprerequisiteforexploitationandmanagementoftheocean’slivingresources.Theprimaryproductioninmarin… 相似文献
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1 INTRODUCTIONSincethe1980saseriesofresearchplanincludingIGBP(theInternationalGeosphere.BiosphereProgramme)havebeensetup,ofthem,PAGES(thePastGlobalchanges)isanimportantcoreproject.Thenaturerecordsofoceandeposit,terrestrial(loess,lakesandswamp)deposi… 相似文献
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Su Yafang 《中国地理科学(英文版)》1994,(4)
(苏亚芳)URBANINVESTMENTENVIRONMENTINFORMATIONSYTEMFORCHINASCOASTALPORTCITIES¥SuYafang(StateKeyLaboratoryofResourcesandEnvironmen... 相似文献