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44 个结果
  • 简介:ThenortheasternChinahadaninstalledcapacityof41,730MWattheendof2004,ofwhichthermalpower35,860MW,hydropower5630MWandwindpower240MW.Itstotalgeneratingcapacityisexpectedtoreach100,000MWupto2020.Duringthe1lthFive-YearPlan,theNortheastPowerGridwillstartconstructingpowersourceprojectsof20,320MW,ofwhichconventionalhydropower100MW,pumpedstoragepower800MW,thermalpower16,940MW,nuclearpower2000MWandwindpower480MW.

  • 标签: 电力工业 中国 东北地区 发电量
  • 简介:Forestfiresoccurrenceisinfluencedbymanyfactors,suchasinter-annualweathervariationsandregionalfueldistributions.Firesoccurrenceindifferentforestregionhasdistinctspatialandtemporalcharacteristics.ThepaperstudiedthenaturalforestfireenvironmentinNortheasternChina,aswellasforestfiresoccurrence,burnedareaandfireseasonsinNortheasternForestRegion.Theresultshowsthatmorethan50%ofannualburnedareaoccurredinNortheastChinaForestRegion.Mainfireseasonsintheregionarespringandautumn.Firesoccurrenceinspringislargerthanthatinautumn.Therearefewfiresinsummer.Theauthors'suggestionsforfiremanagementdepartmentaretoemphasizethefuelmanagement,improvetheroadsconditions,andenhancethefirescontrolability.

  • 标签: 森林 火灾环境 中国 火灾预防
  • 简介:TheU.S.waragainstIraqhasgreatlyshakenthesecuritysituationindifferentquartersofNortheastAsia,especiallyNorthKorea.AndtheTaiwanissueisanotherflashpointintheregion.AftertheU.

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  • 简介:从本质上讲,非唯一总是是我们在倒置过程面对的问题,并且它被等价的现象在地,在观察的错误、分离、有限的特征和另外的来源的影响里引起。许多作者在这块地里做了大量研究以便得到更可靠的结果,并且联合倒置是数据的不同类型被联合同时或顺序导出某些信息的繁荣的。这些研究之一是优先的信息例如地质,钻并且地震数据将被用作限制,当倒置过程能被控制时。在这篇文章,我们旨在更好获得三维的密度对比接口使用一个新方法。集成于倒置的这个优先的地震数据能在意味着在地震地点的莫霍接口的深度将被限制的过程起一个抑制作用。它能因此提供可信的结果。以便测试它的效果,这个程序在东北中国在莫霍几何学的领域examplederivation被使用。

  • 标签: 中国东北地区 先验信息 联合反演 莫霍界面 反演程序 地震数据
  • 简介:MultistagesuperimposeddeformationhasbeendiscussedsystematicallybasedontheprogressofthestratigraphicsequencesofthenortheasternmarginofYangtzeBlock.Thenew-discoveredfirststagedeformationofthosesequencesoccurredfromthemiddleTriassictotheendofearlyJurassictogetherwithdevelopmentofregionalfolding,whichwasresultedfromthedeepdetachmentshearingtendingtowardNW-WNW.Thefoldsdiptoeastandfalldowntowardwest,andweresuperimposedbythemainstagefolding.Thereafter,aseriesoffoldsweredevelopedwithaxestrendingtowardnortheast.Consequentlynormalfoldsoccurredonthenormallimbswhileoverturnedfoldontheoverturnedlimbsduringthefirststagefolding.ThedetachmentorthrustwasformedfromlateJurassictoearlyCretaceous.DuetotheupliftingofDabieandtheWannanMountainsinthenorthandsouthsides,thebi-directionalthrustingbeltwasformedbygravityflowingfromtheMountainstowardthecenterofthebasinalongthenorthsideofXuanchengandsouthsideofGuichi.Thedeformationgeodynamicswasdiscussedsimplybasedonthenewlyrecognizedinformationaboutthetectonicevolution.

  • 标签: 中国 长江下游东北部板块 多级叠加变形 重力滑动 冲断层
  • 简介:TheMcsozoictcctono-magmaticActivationofSouthAmericanplatformhasformedimportantmin-craldepositsintheBorboremaProvince,NorthcasternBrazilSeveralfeatureshaveformedduringthisaetivationevent:disruptivefaultsandfractures;volcanismandigneousintrusions;sedimentarybasinsandthinscattercdcovers.BorboremaProvin

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  • 简介:1.ObjectivesTheMoheBasininHeilongjiang,ChinahasaNEEthrustnappebelt,whichwasassembledbytherootzone,middlethrustzoneandthrustfront,north-southandnorth-eastnormalfaultswiththreetectonicactivitiesoftheMiddleJurassicto.Eocene,theMiocene,andtheEarlytoMiddlePleistocene.Themiddlethrustzoneandthrustfronthasalargenumberoffolds,thrustfaults,fracturesandglutenites,whicharethemajorstructuresofgashydrateaccumulationintheMoheBasin.

  • 标签: New INDICATIONS GAS HYDRATE PERMAFROST ZONE
  • 简介:AbstractThere are only a few case reports of Q fever caused by Coxiella burnetii in China, despite the nature as a ubiquitous zoonotic disease worldwide. In the northeast part of China, a 52-year-old male presented with fever, cough, shortness of breath, and sputum production, accompanied by headache, dizziness, chill, myalgia, and arthralgia. Chest computed tomography images showed pneumonia accompanied by bilateral scattered infiltrates and localized upper-lobe emphysema. The abnormal liver function was indicated by the increased levels of alanine aminotransferase and aspartate aminotransferase. Through high-throughput sequencing and molecular detection, Coxiella burnetii was positive in the patient's blood specimens. After treatment with moxifloxacin hydrochloride and vidarabine monophosphate for 12 days, the patient completely recovered. To our knowledge, this was the first reported case of Q fever with pneumonia and hepatitis in this country.

  • 标签: Q fever Coxiella burnetii Pneumonia Hepatitis China
  • 简介:Adistinctivepatternofovipositionlesionsoccursonaginkgoaleanseed,Yimaiacapituliformis,whichlikelywasinflictedbyakalligrammatidlacewingwithalong,sword-like,plant-piercingovipositor.Thisnewlyrecordedovipositiontype,DT272,occursinthe165million-year-oldJiulongshanFormation,ofMiddleJurassicage,inNortheasternChina.DT272consistsfromthreetoseven,approximatelyequallyspacedlesionswithsurroundingcallustissue,thefabricatorofwhichtargetedfleshyouterandinnertissuesofaginkgophytefruit.Thisdistinctivedamagealsoisknownfromthefleshyattachmentpadsurfacesofbasalbennettitaleanbracts.Examinationofthelifehistoryofthisprobableginkgoalean-kalligrammatidovipositioninteractionindicatesthatthespacingoftheeggsinsubstratetissuesdisfavoredinter-larvalcontact,butlittlecartbesaidofdefenseandcounterdefensestrategiesbetweentheplanthostandthenewlyhatchedimrnatures.

  • 标签: DAOHUGOU INNER Mongolia Jiulongshan Formation Kalligrammatidae
  • 简介:Basedontheanalysesofgroupedactivityfeaturesofdeep-focus(M≥6.0)andshallow-focus(Ms≥5.0)earthquakesintheNortheastChinaregion,thetime-spacecorrelationbetweendeepfocus'strongearthquakegroup'andshallowfocus'strongearthquakegroup'havebeenstudied.ThestudywasmainlyonthecharacteristicsofearthquakedistributiononthecollisionzonebetweenthewestPacificplateandtheEurasianplateandonitsrelationstothemorphologicalfeatureofthewesternPacificsubductionzone.Moreover,emphasiswaslaidonanalysisoftheeffectofthewestPacificplateontheseismicityofEurasianplate.ItisshownthatintheregionwherethewestPacificplatesubductsatlowangles,theseismicityontheplatecollisionzoneisstrong,theeffectofplatesubductiononEurasiancontinentisstrongtoo,andthesubductionzoneisunderastateofhighcompressionalstress.However,intheregionwherethewestPacificplatesubductsathighangles,theseismicityalongtheplatecollisionzoneisweak,theeffectofplatesubductiononEurasiancontinentisweaktoo,andthetensilestressproducedbythesubductionzoneatdepthisenhanced.WethereforeproposethattheseismicityinthenortheastChinaregionwillenteranactiveperiodofshallow'strongearthquakegroup'inthefuture10years.Intheperiod,sixearthquakesofMs≥5.0mayoccur.Therefore,theworkofearthquakemonitoringandpredictioninthisregionshallbestrengthened.

  • 标签: 强地震界 西太平洋板块 地震倾向 中国东北 日本海
  • 简介:Background:WecomparetheclimatesensitivityofEuropeanbeech(FagussylvaticaL)intwoforestnaturereservesinnortheasternGermany.Theonereserve,Schlossberg,ischaracterizedbyshallowchalksoils,whereasintheotherreserve,Eldena,soilsaredeeperandmoredeveloped.Littleisknownaboutthedroughtsensitivityofbeechonshallowchalksoils.Methods:Wecollectedincrementcoresatbothresearchsitesandestablishedclimate-growthrelationships.Intertreevariabilitywasassessedbyemployinglinearmixed-effectmodels.Results:WeexpectedtofinddistinctivelyhigherdroughtsensitivityatSchlossbergduetolimitedwateravailability,butfindonlymarginaldifferencesingrowthresponses.Atbothsites,droughtisthemajorclimaticfactordrivingtreegrowth.Adaptationsintreearchitectureandanunderestimationofthewaterholdingcapacityofshallowchalksoilsarediscussedaspossiblereasonsfornotfindingmoredistinctclimateresponses.Inanalyzingclimate-growthrelationships,wespecificallyfocusedongrowthresponsesofindividualtreesbutobservedonlylowinter-treevariabilityatbothsites.Evidentisashiftinclimateresponsepatternsfromthefirsttothesecondhalfofthetwentiethcenturywithprevious-yeardroughtconditionsbecomingmoreimportantthancurrent-yeardrought.Thisshiftisdiscussedinrelationtoawarmingtrendoverthatsameperiod,aswellaspossibletrendsinmastingbehaviorofbeech.Conclusion:Theinvestigatedbeechtreesontheshallowchalksoilareonlyslightlymoredroughtsensitivethanbeechtreesonthereferencesitewithdeeperandmoredevelopedsoils.

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  • 简介:这研究的目的是描绘元素的碳和器官的碳(EC和OC,分别地)喷雾器粒子(PM2.5)的内容在Tongliao收集了,在东北中国的HorqinSandland的一个地点。在春天2005期间,PM2.5集体集中是126±71μg·m?3,与更高的灰尘集中,在五期间,灰尘比在非尘封的天下暴雨(255±77对106±44μg·m?3)。在一个热/光的反射方法决定的PM2.5的平均OC和EC集中是15.7±7.3μg·m?3和3.3±1.7μg·m?3,分别地并且碳的喷雾器在正常的天与21.7%相比在灰尘暴风雨期间说明了9.9%PM2.5质量。到EC的OC的平均比率在灰尘暴风雨期间类似于在非尘封的天的那些,并且在OC和EC之间的关联系数高,0.86。高OC/EC比率,八碳部分的分布,和在有OC和EC的K之间的强壮的关系显示农村生物资源烧是到地区性的碳的喷雾器的主导的贡献者。

  • 标签: 东北地区 沙尘暴 有机碳 哈尔滨 沙地 2005年春季
  • 简介:通过magnetostratigraphy的全面研究和在东北西藏的高原的几盆的sedimentology,我们表明学习区域主要经历了六构造高举在约52妈,的阶段34-30妈,24-20妈,16-12妈,8-6妈,和3.6-2.6妈。从Qaidam,Linxia,Xining,和西方Jiuquan盆的花粉集合的全面分析证明东北西藏的高原在植被类型和气候经历了六个主要变化:为温暖潮湿的森林植被的50-40妈,为温暖干旱、适度干旱的森林大草原植被的40-23妈,为温暖潮湿、适度潮湿的森林植被的23-18.6妈,为温暖潮湿、凉爽潮湿的森林大草原植被的18.6-8.5妈,为适度的亚humid无树平原大草原植被的8.6-5妈,并且为寒冷干旱的大草原植被的5-1.8妈。全面比较构造高举从沉积记录,从花粉推断的气候的变化,和全球气候变化推断的事件在东北西藏的高原显示出那在在低高度的Paleogene的气候被全球气候变化主要控制,当在晚第三纪,有山和盆的高高度风景的间隔是更多,这由高度和形态学控制了时。

  • 标签: 全球气候变化 青藏高原 构造隆升 东北部 中新生代 沉积物
  • 简介:Factoranalysisandexpertscoringmethodswereusedtorankflammabilityof16majorspeciesoftreesandshrubsinDaxing’anlingareaofnortheasternChina,basedon6flammabilityvariables,i.e.,airdrymoisturecontent,absolutedrymoisturecontent,ignitionpoint,ashcontent,heatofcombustionandextractivecontentmeasuredonleaves,barksandtwigs.Outof16speciesevaluated,forleaves’flammability,LarixgmeliniwasthesmallestandPinussylvestrisvar.mongolicawasthebiggest;forbarks’flammability,SalixkoreensiswasthesmallestandP.sylvestrisvar.mongolicawasthebiggest;andfortwigs’flammability,PopulusdavidianawasthesmallestandLedumpalustrevar.dilatatumwasthebiggest.Theflammabilityrankingbasedontheintegratedscoresofleaves,barksandtwigssuggestedthatPrunuspadus,Betuladahurica,andL.gmeliniwerethetop3lessflammablespeciesandthatL.palustrevar.dilatatum,P.sylvestrisvar.mongolica,andR.simsiiwerethetop3moreflammablespecies.Thisrankingagreedwellwithcurrentstandardsandexperienceandshouldhelpthespeciesselectionforbuildingfire-breakforestbeltsinthestudyregion.

  • 标签: BOREAL plants fire-break fuel-breaks barks LEAVES
  • 简介:Background:Cumulativeimpactsofwildfiresandforestharvestingcancauseshiftsfromclosed-crownforesttoopenwoodlandinborealecosystems.Tolowertheprobabilityofoccurrenceofsuchcatastrophicregimeshifts,forestloggingmustdecreasewhenfirefrequencyincreases,sothatthecombineddisturbanceratedoesnotexceedtheHolocenemaximum.Knowinghowclimatewarmingwillaffectfireregimesisthuscrucialtosustainablymanagetheforest.Thisstudyaimedtoprovideaguidetodeterminesustainableforestharvestinglevels,byreconstructingtheHolocenefirehistoryatthenorthernlimitofcommercialforestryinQuebecusingcharcoalparticlespreservedinlakesediments.Methods:SedimentcoresweresampledfromfourlakeslocatedclosetothenorthernlimitofcommercialforestryinQuebec.Thecoreswereslicedintoconsecutive0.5cmthicksubsamplesfromwhich1cm3wasextractedtocountandmeasurecharcoalparticleslargerthan150microns.Age-depthmodelswereobtainedforeachcorebasedonacceleratormassspectroscopy(AMS)radiocarbondates.Holocenefirehistorieswerereconstructedbycombiningcharcoalcountsandage-depthmodelstoobtaincharcoalaccumulationratesand,afterstatisticaltreatment,long-termtrendsinfireoccurrence(expressedasnumberoffiresper1000years).Results:Fireoccurrencevariedbetweenthefourstudiedsites,butfiresgenerallyoccurredmoreoftenduringwarmanddryperiodsoftheHolocene,especiallyduringtheHoloceneThermalMaximum(7000–3500cal.BP),whenfireoccurrencewastwiceashighasatpresent.Conclusions:ThecurrentfireregimeinthestudyareaisstillwithinthenaturalrangeofvariabilityobservedovertheHolocene.However,climaticconditionscomparabletotheHoloceneThermalMaximumcouldbereachedwithinthenextfewdecades,thussubstantiallyreducingtheamountofwoodavailabletotheforestindustry.

  • 标签: Fire OCCURRENCE HOLOCENE BOREAL forest Northern