简介：Inthispaper,aWindDirectionChangeIndex(WI),whichcandescribefour-dimensionalspatiotemporalchangesoftheatmosphericcirculationobjectivelyandquantitatively,isdefinedtostudyitsevolutionandseasonalvariation.ThefirstfourmodescanbeobtainedbyEOFexpansionofthezonallyaveragedWI.ThefirstmoderevealsthebasicspatialdistributionoftheannuallyaveragedWI.Thesecondmodereflectsthequasi-harmonicpartsoftheWIdeviations.Tropical,subtropicalandextratropicalmonsoonareascanbeclearlyreflectedbythismode.Thethirdmodereflectsthenon-harmonicpartsoftheWIdeviations.Itshowstheso-calledFebruaryreverseinstratosphericatmosphereaswellastheasymmetricseasonalchangesfromspringtofallandfromfalltospringduetoboththeland-seadistributioncontrastbetweentheNorthernandSouthernHemispheresandthenonlineareffectofatmosphericandoceanfluids.Thefourthmoderevealsthenorthwardadvancingoftheglobalreversedwindfieldsfromspringtosummerandtheirsouthwardwithdrawalfromsummertoautumn.

简介：ＥＮＶＩＲＯＮＭＥＮＴＡＮＤＣＬＩＭＡＴＥＣＨＡＮＧＥＩＮＣＨＩＮＡ￥ＺｈｏｕＸｉｕｊｉ（周秀骥），ＣｈｅｎＬｏｎｇｘｕｎ（陈隆勋），ＬｉＷｅｉｌｉａｎｇ（李维亮）ａｎｄＬｉＸｉａｏｗｅｎ（李晓文）ＥＮＶＩＲＯＮＭＥＮＴＡＮＤＣＬＩＭＡＴＥＣＨＡＮＧ...

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简介：ThestudywasmadebyobservingtheannualchangeofthegonadaldevelopmentofamphioxusinXiamencohtinuouslyfortwoyearsfromNovember,1986toNovember,1988.Wedeterminedthegonadaldiameter,gonadosomaticindexofeachamphioxus,andobservedthehistologicalcharacteristicofthegonadaldevelopmentofthefemaleandmalebycutsection,whichprovidedthebasisfordividingthestagesgonadsandthedetermininglevelofthegonadaldevelopmentofamphioxusineachmonth.

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简介：MarkedbytheUNClimateChangeConferenceinCopenhagen2009,climatechangeisshapingthenewpatternforfuturegeopoliticswithunprecedenteddrive.Climatechangehassurpassedthecategoryofpureenvironmentproblemandbecomeafocalissueininternationalrelations.Drivenbyclimatechange,newchangeshavetakenplaceintheevolutionofgeopoliticalpattern.(1)Geopoliticalcontentionexpandsintonewfieldsandregions.(2)Measuresandtoolsofgeopoliticalcontentionbecomemorediversified.(3)Mainbodiesofgeopoliticalgamblingaredividedintodifferentgroups.Withthedevelopmentofpoliticization,climatechangehasbecomethesignificantdrivingforcethatcaninfluencetheevolutionofgeopoliticalpattern.Measures,sphereandcontentsofgeopoliticalcontentionchangeddramatically,carbonemissionpermits,carbontariffandnewenergytechnologyturnedintothekeypointsofgeopoliticalcontention.Climatechangeactsontheevolutionofgeopoliticalpatternthroughthreemainpaths:'Feedbackeffect','Tracebackeffect',and'Rippleeffect',andtheyexertinfluenceongeopoliticalpatternwiththreeimpacts:'Depressioneffect','Traceabilityeffect',and'Diffusioneffect'.Wedrawseveralconclusionsfromtheanalysis:(1)Climatechangegraduallybecomesoneofthemostactivedrivingforcestoimpactontheevolutionofgeopoliticalpatterninthepresentworldanditdiversifiesthegeopoliticaltargets.(2)Climatechangegeneratesnewgeopoliticaltools.Thedevelopedcountriesuseclimatechangeasa'Lever'toprystrategicresourceslikeenergyandgrainandthegeopoliticalmeansareinamoresecretiveway.(3)Low-carbontechnology,withnewenergytechnologyasthecore,becomesthekeyfactorofgeopoliticalinfluenceandpowertransition.Thosewhocantakeadvantageofnewenergytechnologieswilloccupytheleadingpositioninfuture’sclimatechangenegotiationsandgeopoliticalcompetition.

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简介：Organizedby:BeijingNormalUniversity,NationalNaturalScienceFoundationofChinaHostedby:InstituteofResourcesScience,BeijingNormalUniversityKeyLaboratoryofEnvironmentalChangeandNaturalDisaster,MinistryofEducationofChinaTopics:1)DetectingandmonitoringLUCC2)Temporal-spatialcharacteristicsinLUCC3)DrivingmodelforLUCC4)ForecastingandmodelingLUCC5)PhenologicalandbiochemicalresponseonLUCC6)RegionalLUCCandmicroclimate7)LUCCinthecontextofglobalchange8)Impactofglobalchangeonthesustainableland-usemodelingAbstractsubmission:TheofficiallanguageofthisconferenceisEnglish.WeinvitepaperswritteninEnglishandanabstractoflessthanonepageofstandardA4sizetotheConferenceSecretariatbyApr15,2001.RegistrationFee:280US$(300US$afterJuly15,2001)Add：No.19,XinjiekouwaiStreet,100875,InstituteofResourcesScience,BeijingNormalUniversity,Beijing,ChinaTel：86-10-62207656or62209024Fax：010-62208178http://202.112.93.50/LUCCD2001/index.htmlE-mail:Pwang@bnu.edu.cnCyh@bnu.edu.cn

简介：因为在城市的区域的复杂变化，基于面具技术修改了CVA申请能使缩小非植被的效果变化并且在很大程度上在效率之上改善。而且，从方法收极的阴谋，有PVI的绝对尖、全部的大小的技术措施变化计算了根据线性与用3DG-S计算的least-squareestimation和GVI合适转变。最后，这应用在2002和2005与武汉的陆地卫星ETM+形象被执行，并且由错误矩阵估计了，以它能检测的方法94.91%改正的变化象素，和全部的一致系数Kappa能到达to0.85。评估结果演示趋势作为城市的植被的一种有效、有效的选择改变的这个新应用程序抽取。

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简介：ＡＳＴＵＤＹＯＦＡＮＴＡＲＣＴＩＣＳＹＮＯＰＴＩＣ－ＣＬＩＭＡＴＩＣＶＡＲＩＡＴＩＯＮＡＮＤＧＬＯＢＡＬＣＨＡＮＧＥ￥ＬｕＬｏｎｇｈｕａ（陆龙骅），ＢｉａｎＬｉｎｇｅｎ（卞林根），ＪｉｕＰｅｎｇｑｕｎ（贾朋群）ａｎｄＺｈａｎｇＺｈｅｎｇｑｉｕ（张正秋...

简介：ＰＲＯＧＲＥＳＳＥＳＯＦＴＨＥＳＴＵＤＹＯＮＩＭＰＡＣＴＳＯＦＣＬＩＭＡＴＥＣＨＡＮＧＥＯＮＡＧＲＩＣＵＬＴＵＲＡＬＰＲＯＤＵＣＴＩＯＮＩＮＣＨＩＮＡ￥ＷａｎｇＦｕｔａｎｇ（王馥棠）ＰＲＯＧＲＥＳＳＥＳＯＦＴＨＥＳＴＵＤＹＯＮＩＭＰＡＣＴＳＯＦＣＬＩ...

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简介：ＩＭＰＬＩＣＡＴＩＯＮＯＦＣＬＩＭＡＴＥＣＨＡＮＧＥＦＯＲＡＧＲＩＣＵＬＴＵＲＡＬＰＲＯＤＵＣＴＩＯＮＩＮＥＡＳＴＥＲＮＡＲＥＡＳＯＦＣＨＩＮＡＷａｎｇＦｕｔａｎｇ（王馥棠）ＩＭＰＬＩＣＡＴＩＯＮＯＦＣＬＩＭＡＴＥＣＨＡＮＧＥＦＯＲＡＧＲＩＣＵＬＴＵ...

简介：TheimpactsofclimatechangeonChina'sagriculturearemeasuredbasedonRicardianmodel.Byusingcounty-levelcross-sectionaldataonagriculturalnetrevenue,climate,andothereconomicandgeographicaldatafor1275agriculture-dominatedcountiesintheperiodof1985-1991,wefindthatbothhighertemperatureandmoreprecipitationwillhaveoverallpositiveimpactonChina'sagriculture.However,theimpactsvaryseasonallyandregionally.Highertemperatureinallseasonsexceptspringincreasesagriculturalnetrevenuewhilemoreprecipitationisbeneficialinwinterbutisharmfulinsummer.Applyingthemodeltofiveclimatescenariosinthe2020sand2050sshowsthattheNorth,theNortheast,theNorthwest,andtheQinghai-TibetPlateauwouldalwaysbenefitfromclimatechangewhiletheSouthandtheSouthwestmaybenegativelyaffected.FortheEastandtheCentralChina,mostscenariosshowthattheymaybenefitfromclimatechange.Inconclusion,climatechangewouldbebeneficialtothewholeChina.

简介：Basedontherelationshipbetweenrockphysicalpropertiesandatomicstructuresofchemicalelements,thispaperdissertatesthecharacteristicsbetweenthedifferenceandchangeinthecomprehensivephysicalpropertiesofrocks,suchasdensity,elasticity,electricalpropertyandradioactivity,etc.Theexamplesinthispapershowthatthechangeofthecomprehensivephysicalparametersofrocksreflectsthechangeofatoms,molecules,mineralsandtheirconstitutionsinrocks,andtherearesomecorrelationsbetweentheseparameters.

简介：Aresearchonthathowthetopicofmobility,whichiscompletelydifferentbuttightlyrelevanttospace,providesnewapproachesandmethodssoastopromotethefurtherdevelopmentofgeographicinformationservices,willaccumulatebasicexperiencefordifferenttypesofrelativeinformationsystemsinthewidefieldsoflocationbasedservices.Thispaperanalyzesthemeaningofmobilityandthechangeforgeographicinformationservicemodel,itdescribesthedifferencesandcorrelationbetweenM-GISandtraditionalGIS.Itsetsatechnicalframeworkofgeographicinformationservicesaccordingtomobilecontextandprovidesacasestudy.