简介:TheIndianContinentdriftednorthwardandeventuallycollideawiththeEuro-AsianContinent,pushingupthepieceoflandweknowtodayastheHimalayasandHenduanMountains.LocatedwhereQinghai,Tibet,YunnanandSichuanallmeet.Asia,includingtheNujiang,JinshajiangandLancanjiang.Inthemountains,riversWaveadropofabout2,500meters.Latelastyear,wedroveintothemountainousarea,coveringadistanceofsome1,000km.
简介:HenduanMountains:LocationsandResources¥byWuZhenhuaTheHenduanMountainsaboundinforestresources.TheHenduanMountainssprawlnorthto...
简介:Inthepaper,theturbulentdissipationisconsideredinthemodelforstudyingtheflowovermountains.Thegoverningequationisafirstorderordinarydifferentialequationderivedfromanalgebraicequationwithoutdissipationcase.Thesolutionissensitivetotheupstreamconditionofdissipation.Thedissipationnotonlyreducesthestrengthofdiscontinuitybutalsochangesthepropertiesofthegoverningequation.Inthepaper,thequalitativecharacteristicfeaturesofthegoverningequationarediscussed.Thenumericalresultswithsuperandsub-criticalcasesarealsodiscussedindetail.Theresultsshowthattheturbulentdissipationisanimportantfactorandisnotnegligible.
简介:ChangingtheDabaMountainswithWisdomandSweatTheformerresidenceofDengXiaopinginGuang'anCounty.AllaroundtheDataMountainareathepeo...
简介:ForethnicTibetans,topayhomagetoatleastonesacredmountainorlakebywakingrounditisareligiouspursuittheymustattainintheirlifetime,forwhichtheyarewillingtoexhaustalltheirsavings.Eventhoughapersonalreadydidsowhenstillababy-carriedbytheperson'smotheronherbackthroughoutthejourney-theperson,inninecasesoutoften,willdoitonhisorherownwhenheorshegrowsup.NotafewethnicTibetanshavemadepilgrimagestomorethanonesacredmountainorlake,believingthatholyspiritstherewillrepaytheirpiousnesswithblessings.
简介:Communityforestryisoneformoflandmanagementfordevelopmentinthemountainareas.Theprimaryaimsofcommunityforestryaretoboosttheru...
简介:TheNanlingMountains,atlatitude23.5"-25.5"N,isafamousnonfcrrousmctalzoneinChina’ItissituatedatthejuncturcofGuangdong,GuangalandHunan,runningcasttowestingencral.TlicrcarefourclcmentsformingthcNanlingMountains’Extcndingfromeasttowcst,oneisgranitcformedfromtlieIndosiniantothcYansbanianorogcny,andespecia
简介: 1Introduction Itiscommoninmobilebeltsthatupliftingmountainsareneighboredbysynchronouslysubsidingbasins.Thecouplingmechanismofsuchsubsidenceandupliftisanimportanttargettoclarifythedynamicsofmobilebelts.WeinvestigatethecoupledmountainupliftandbasinsubsidenceintheCentralJapanhighland,thejunctionofthreeislandarcs(theNortheastJapan,theSouthwestJapanandtheIzu-Ogasawaraarcs).Thehighlandover3000minheightiscomposedofmountainranges,plateausandintramountainbasins(Fig.1).……
简介:Accordingtodifferencesinvegetationtypesandtheircoverage,combiningthelatestresearch,usingtheoryandmethodonthevalueofvegetationecosystemservices,thispapernotonlycalculatedgoodsproducedbydifferenttypesofvegetationbutalsoestimatedthevalueofvariousvegetationecosystemservicesandsetupdatabase,GISandeco-accountofvegetationecosystem.Theresultwasasfollows:thevalueofvegetation''sprimaryproductivity,soilandfertilityconservation,waterconservation.CO2fixationandO2releasewas199.6billionyuan/a22.64billionyuan/a22.6billionyuan/a,352.24billionyuan/aand374.19billionyuan/a,respectively.Thetotalvalueofecosystemserviceswas968.33billionyuan/a.Thetemperatedeciduousbroad-leavedforesthadthehighestcontributionrate,accountingfor16.42%,Theresultofvaluecanreflectregionalrealitymoreexactly.
简介:Inrecentyears,especiallyinthesummerof2002,themostseriousforestfiresoccurredintheDaxinganMountainofHeilongjiangprovinceandInnerMongolia.TherehasbeenlongtimeseriousforestfireenvironmentinsummerinDaxinganMountain.Thegrassintheforestisscorchedforlongtimedroughtandthemoisturecontentoflitterandturflayerdecreaserapidly.Theaccumulationanddrynessoffuelbuildthesummerforestfireenvironment,whicharemajorcausedbyMeteorologicalenvironment....
简介:Ithasbeenshownfrompetrologic,geochemical,traceelementandREEevidencethatthegran-iteintrusionsatSikongshan,AnhuiProvince,canbeassignedtotwodistincttypeswhichareradicallydifferentinageandorigin.ThePrecambriangneissicgranitedresultedfromremeltingofoldcontinentalcrustwhiletheMesozoicgraniteswerederived,alsothroughremelting,fromlow-Rb/Srrocksatgreaterdepths.GranitemassesatTiantangzhaiandZhoujiawanintheDabieshanMountainsarealsodicussed.
简介:Groundfireisanignitingphenomenonthatisdifficulttocontrolandlightningisthemaincauseofgroundfire.Themechanismoflightning-groundfireisverycomplex.Daxing'anlingMountainsforestregionistheplacethatlighting-groundfireoccursmoreoftenandregularly.Ourstudyonlightning-groundfireofthiszonein2002shows:muchmoresoilnearthesurfaceandthegroundfuelisthematterpreconditionsoflightning-groundfire,andtheweatherconditionshastentheoccurrenceoflightning...
简介:AnM8.1earthquakethatoccurredwestoftheKunlunMountainsPasshascausedmorethan20collapsebodiesorzones,whicharemainlydistributednearthesurfaceseismicrupturezone,westofHohSaiLake.Thecollapsesareoffourtypes,bedrock,soilmassandicemasscollapsesandavalanches.Thespatialdistributionandthecharacteristicsofdevelopmentofthecollapsesareanalyzedinthepaper.Comparisedwiththosecausedbyotherearthquakes,thecollapsesaresmallerinscale.Inadditiontothelithologicalcharacteristicsofthecrustalmedia,topographic,geomorphicandclimaticfactors,weakerseismicgroundmotionisanimportantcauseforformationofthesmaller-scalecollapses.Thelongsurfacerupturezoneandweakergroundmotionareimportantfeaturesoftheseismicrupture,whichmayberelatedtothestructureofthepreexistingfault.
简介:TheTianqiaogou-Huangyangchuanfaultlieseastofthemainpeak,LenglonglingMount,intheeastpartoftheQilianMountainsandisoneofthemajoractivefaultsontheeasternsectionoftheQilianMountains.ThefaultisseparatedintotwosegmentsatGuanjiataivillage,theeasternandwesternsegments,andhasundergoneobviousmovementsincetheHolocene.Sixtrencheswereexcavatedtostudythepaleoseismicactivityalongthefault.Integratedandcomparativeanalysisofsedimentsinthetrenchesreveals7paleoseismiceventsandahistoricearthquakeonthefaultsincetheHolocene.Theiragesare:eventⅠis(10743±343)aBP,eventⅡ(9038±39)aBP,eventⅢ(7050±577)aBP,eventⅣ(4847±185)aBP,eventⅤ(3562±190)aBP,eventⅥ(2476±194)aBP,andeventⅦ(1505±253),respectively,andeventⅧisthe1927GulangMs8.0earthquake.Itindicatesthatthefaultmighthavecontributedtothe1927GulangMs8.0earthquake.Thetemporalandspatialdistributionofthepaleoseismiceventsisrelativelyuniformandischaracterizedapproximatelybyaquasiperiodicrecurrence.
简介:Thethin-skinnedstructureinthecrustofthenorthernTianshanpiedmontisexploredbyan86-km-long,NS-trendingdeepseismicreflectionprofilethroughtheürümqidepressionofthenorthmarginoftheTianshanmoun-tains.OntheCDPstackingsection,thefirst-andsecond-rowparalleltoanticlinesinthenorthmarginoftheTian-shanmountainsareshownonthesegmenttothesouthoftheShihezi.Thedetachments,correspondingtothereflectioneventsatTWT2.5~3.0sand5.5~6.0srespectively,jointhecrustaldeepstructuretothereversefault-foldzone.TheManasthrustextendsdownwardsinlistricshape,mergesintothedetachmentataboutTWT2.5sandjoinstotheQingshuihethrust.Thereflectioneventson5.5~6.0sarecorrespondingtothemaindetachment,whichjoinsthelowerManasanticline,andfinallyconvergetotheJunggarSouthernMarginalFault.A12~14km-thicksedimentarybasinexistsontheregioninthenorthtotheShihezi.ThedepthoftheMohodiscontinuitybe-neaththeJunggarbasinisabout45km,andincreasessouthwardsto50km.ThecrustalstructureinferredfromthedeepseismicsoundingprofileandtheBougueranomalyinthesameregionisconsistentwiththeimagefromthedeepseismicreflectionprofile.Theseismogenicmodelofthe1906Manasearthquakeisrelatedtothefaultsystem,whichconsistsoftheQingshuihethrust,thedetachmentsandtheshallowManasramp.
简介:<正>TheTongkuangyuporphyrycopperdepositintheZhongtiaoMountains,China,istectonicallylocatedonthesouthernmarginoftheNorthChinaplatformandonthenorthernmarginoftheLateArcheanZhongtiaoshanintracontinentalriftbasin.Thedepositoccursinacopper-bearingformationoftuffaceousvariegatedsandshale-K-richbimodalvolcanicrocksoftheTongkuangyuFormationoftheLateArcheanJiangxianGroup,andtheorebodiesarelocalizedinatransitionportionbetweentuffaceousvariegatedsandshaleandbimodalvolcanicrocks.Thehostrocksconsistmainlyofmetagranodiorite-porphyry,meta-quartzmonzonite-