共查询到20条相似文献,搜索用时 31 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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PROBLEMSOFRESERVOIRSEDIMENTATIONINCHINAJiangNaisen(姜乃森)FuLingyan(傅玲燕)ChinaInstituteofWaterResourcesandHydropowerResearch,Beij... 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 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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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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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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UTILIZATIONANDSUSTAINABLEDEVELOPMENTOFISLANDMOUNTAINSINCHINA①ZhangYaoguang(张耀光)YangYinkai(杨荫凯)InstituteofMarineResources,Liao... 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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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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1INTRODUCTIONSeverewaterpolutionandwaterresourcesshortageshavebecometwokeyobstructionstorealizesustainableutilizationofwate... 相似文献
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INTRODUCTIONTheproductionofphytoplanktonisthefirsttacheintheproductionbymarineorganismsandinthemarinefoodchain .Knowledgeofprimaryproductioninmarinewatersisprerequisiteforexploitationandmanagementoftheocean’slivingresources.Theprimaryproductioninmarin… 相似文献
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1 INTODUCTIONWetlandcanperformenormousfunctionsinre sourceandenvironmentadjustment ,anditisoneoftheimportantecologicalenvironmentsthathumanbe ingsrelyon .Internationalcommunitieshavealreadypaid greatattentiontothewetlandresearch ,andsomeforeignershavedone… 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
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INTRODUCTIONInrecentyears,co culture (integratedculture )ofmarinespecies (algaeandanimals)hasreceivedgreatattention .Inco culturesystemthealgaeactivelyuptakeCO2 andthemetabolicwastes(suchasNH4 +,NO2 - ,NO3- etc)asnutrientsources,andreleaseO2 tothesurroundingenviron … 相似文献
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INTRODUCTIONJohannes (1 965)firstshowedtheimportanceofprotozoaasremineralizersinmarineenvironments.Thesignificanceofprotozoainthefreshwaterfoodwebhasbeenknownforthepast2 0years.Protozoaisamainpredatorofplanktonicbacteriaandphytoplankton ,andalsoafoodsourceo… 相似文献
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INTRODUCTIONH2,asanonpollutingfuel,seemstobeapreferablealternativeenergysourceofthefuture.Studyonbiohydrogen,coveringgenetic,physiologicalandbiochemicalaspects,hasbeenactivelypursuedinthelast100years,intheattempttoproducerenewableH2,particularlyrenewable“s… 相似文献