简介:Inthecontextofglobalwarming,Chinaisfacingwithincreasingclimaterisks.Itisimperativetodevelopquantitativeindicestoreflecttheclimateriskscausedbyextremeweather/climateeventsandadverseclimaticconditionsinassociationwithdifferentindustries.Basedontheobservationsat2288meteorologicalstationsinChinaandthemeteorologicaldisastersdata,asetofindicesaredevelopedtomeasureclimaterisksduetowater-logging,drought,hightemperature,cryogenicfreezing,andtyphoon.Astatisticalmethodisthenusedtoconstructanoverallclimateriskindex(CRI)forChinafromtheseindividualindices.Thereisagoodcorrespondencebetweentheseindicesandhistoricalclimaticconditions.TheCRI,theindexofwater-loggingbyrain,andthehightemperatureindexincreaseatarateof0.28,0.37,and0.65perdecade,respectively,from1961to2016.Thecryogenicfreezingindexiscloselyrelatedtochangesintheconsumerpriceindexforfood.Thehightemperatureindexiscorrelatedwiththeconsumptionofenergyandelectricity.Thecorrelationbetweentheyearlygrowthinclaimsonhouseholdpropertyinsuranceandthesumofthewater-loggingindexandthetyphoonindexinthesameyearisashighas0.70.BoththegrowthrateofclaimsonagriculturalinsuranceandtheannualgrowthrateofhospitalinpatientsarepositivelycorrelatedwiththeCRI.Theyear-on-yeargrowthinthenumberofdomestictouristsissignificantlynegativelycorrelatedwiththeCRIinthesameyear.MoreeffortsareneededtodevelopregionalCRIs.
简介:TakingalookattheTrumpadministration'sforeignpolicydecisionsoverthecourseofthelastyear,theyindicateacertainstrategyaswellasunpredictabletactics.ChinashouldtacklenotonlydiplomacystrategybutalsogettogripswiththedetailsofChina'sUSpolicy.TheTrumpadministrationisfamiliarwithChina'sdiplomaticmodel,sothepreventionoftacticalrigiditiesandanadjustmentofbehaviorpatternsisrequired.
简介:ThroughthestudyofthegeologicalconditionsofpotashdepositsinChinafromrecentyears,anewunderstandingofpotashtheorieshasarisenthatappropriateChinesegeologicalfeatures.Importantprogressandsubstantialbreakthroughshavebeengainedinthedirectionandmanagementofpotashprospecting:(1)Importantbreakthroughsincontinentalpotassiumprospecting:The"QuaternarygraveltypedeeppotassiumrichbrinemetallogenicmodelinwesternQaidam"ensuresQuaternarydeeppotassiumrichbrineprospectingwillgrownewKClresourcesby350Mt,providingaresourceguaranteeformeetingtheChinesedemandforsylvite.(2)TheMarinefaciespotashprospectingshowsgoodprospects:thedeterminationofthenewtypeofTriassicpolyhalitepotashoredepositsinSichuanprovideanimportantscientificbasisfortheestablishmentofexplorationplanningandtheselectionofexplorationtargetareasforpolyhalitemineralsintheSichuanBasin;The"two-storeypotashdepositsmodel"insouthwesternYunnanhasbeenconfirmed,whichindicatesprospectsfortheexplorationofpotashinthedeeperMarinefaciesinsouthwesternYunnanarelikelytobesuccessful.ThediscoveryofahighconcentrationofrichbromitesaltandpotashsaltinthePaleogeneoftheKuqadepressionandthesouthwesternTarimregionprovidesstrongsupportforthelikelihoodlarge-scalepotashdepositsexistintheseregions.
简介:Geothermalenergyisapreciousresource,whichiswidelydistributed,varied,andabundant.Chinahasenteredaperiodofrapiddevelopmentofgeothermalenergysince2010.Asshallowgeothermalenergypromoting,thedepthofhydrothermalgeothermalexplorationisincreasing.ThequalityofHotDryRock(HDR)andrelatedexploratorytechnologiesarebetterdevelopedandutilized.Onthebasisofgeothermaldevelopment,thispaperreviewsthegeothermalprogressduringthe"12thFive-YearPlan",andsummarizestheachievementsofhydrothermalgeothermalandhotdryrocksfromgeothermalsurveyandevaluationaspects.Finally,theauthorspredictthedevelopmenttrendofthefuturegeothermalresearchtobenefitgeothermalandhotdryrockresearch.
简介:Shandonghasmorethan70%ofnaturalcoastsareundererosion.Coastalerosionstartedfromthe1970'sandbecameaveryseriousproblemat1990's.Thedramaticdecreaseofsedimentsuppliesfromriverscausedrapiderosionatthedeltaandestuaryareas,especiallyintheabandonedYellowRiverDelta.MostsandycoastsalongthePeninsulawereerodedduetolackofsandsupplyandinterruptionofalongshoresedimentdrift,sanddredgingfromthebeachortheoffshoreareacausedseriouserosionduringshorttime.Sea-levelrisecausesslowbutconstantshorelineretreatsandbecameamoreseriousthreat.DifferenttypesofhardsolutionsforcoastalprotectionagainsterosionwereusedinShandong.Seawallsaremostwidelyused,especiallyattheYellowRiverDeltaandcitycenterwaterfront.Groynes,jettiesandbreakwaterareusedonthenorthandeastsandycoastofthePeninsula.Hardapproachesareeffectivetoprotectthecoasterosionbutnotchangetheerosioncausesandledsecondaryimpactonthecoast.Softengineeringsolutionorthecombinedsolutionsaretakenintoacts.Beachnourishmentismostlyconsideredasthebettersoftsolution,especiallytothosetouristsattractingsandybeachesalongtheShandongcoast.Longtermmonitoringandcontinuouslessonslearningfromthecoastalerosionmanagementwillbeadaptiveforbettercoastsolutioninthefuture.
简介:啮齿类动物是散布了瘟疫,和Spermophilusdauricus的主要主人动物(S。dauricus)是在诺思中国的最普通的啮齿类动物。在这研究,啮齿类动物密度调查从4月在瓷器吉林省被执行到2005年8月。我和semivariogram弄弯的Morans被用来调查采样数据的空间分发特征。我们发现空间自相关索引低、失败产生一条有意义的semivariogram曲线。在这种情况中,通常使用内插器,例如kriging,不对在学习区域上印射密度合适。然而,三明治模型,基于空间成层的异质,能被用于我们的数据。我们的结果证明土壤和土地使用的类型显著地影响了啮齿类动物密度的分发,并且这些变量的交互效果独自比每个变量的强壮得多。估计三明治的啮齿类动物密度地图证明那啮齿类动物密度在吉林省从东南增加了到西北。最后,用三明治模型的啮齿类动物密度调查的一个框架被介绍。
简介:VisegrádGroupisoneofthemostdynamicinternationalorganizationsamongCentralandEasternEuropeancountries.ItsmembersarePoland,theCzechRepublic,SlovakiaandHungary.TradebetweenVisegrádGroupandChinaaccountsforover70%ofthetotaltradebetweenChinaandCentralandEasternEurope(CEE),highlightingthegroup'simportance.
简介:煤是一个基本资源,它的使用保证国民经济和人的社会的发展。因此,煤交通是瓷器全面交通系统的重要部分。在这个系统,港口是重要运输节点。这研究在中国考虑了沿海的港口并且从1973~2013分析了煤交通的进化。我们集中了于装载并且卸掉的煤的空间模式,并且总结了这些进程的主要特征和开发。然后,我们用数学模型和指示物在这些数量检验了搬运的煤和地区性的变化的体积。最后,我们分析了专业化功能和涉及煤交通揭示他们的空间关系和时间的进化的港口的空间区别。我们发现煤交通的空间模式从南方输入和北方输出改变了到所有输入和北方输出。然而,突出的港口使用了因为卸掉的煤仍然长江向南在区域被集中。装载的煤被专注于Bohai的西岸海湾。另外,在Bohai海湾附近的一些港口例如Dandong,Dalian,Yantai,和Qingdao,从装载港口到卸掉港口的传统的煤变化了。这研究进一步开发了运输地理的理论,并且改进了我们瓷器煤交通系统的理解。
简介:ThemainlandofChinaiscomposedoftheNorthChinaCraton,theSouthChinaCraton,theTarimCratonandotheryoungorogehiebelts.Amongstthethreecratons,theNorthChinaCratonhasbeenstudiedmostandnotedforitswidely-distributedArcheanbasementrocks.Inthispaper,weassessandcomparethegeology,rocktypes,formationageandgeochemicalcompositionfeaturesoftheArcheanbasementsofthethreecratons.Theyhavesomecommoncharacteristics,includingthefactthatthecrustalrockspriortothePaleoarcheanandthesupracrustalrocksoftheNeoareheanwerepreserved,andTonalite-Trondhjemtite-Granodiorite(TTG)magmatismandtectono-magmatismoccurredatabout2.7Gaandabout2.5Garespectively.TheTarimCratonandtheNorthChinaCratonshowmoresimilaritiesintheirearlyPrecambriancrustalevolution.SignificantfindingsontheArcheanbasementoftheNorthChinaCratonareconeludedtobe:(1)thetectonicregimeintheearlystage(>3.1Ga)isdistinctfrommodemplatetectonics;(2)thecontinentalcrustaccretionoccurredmostlyfromthelateMesoarcheantotheearlyNeoareheanperiod;(3)ahugelineartectonicbeltalreadyexistedinthelateNeoarcheanperiod,suggestingthebeginningofplatetectonics;and(4)thepreliminarycratonizationhadalreadybeencompletedbyabout2.5Ga.HadeandetritalzirconswerefoundatatotalofninelocationswithinChina.Mostofthemshowclearoscillatoryzoning,sharingsimilartextureswithmagmaticzirconsfrominterrnediate-felsicmagmaticrocks.ThisindicatesthatafairquantityofcontinentalmaterialhadalreadydevelopedonEarthatthattime.