简介:统计生态学与分析技术和方法的前进很快发展。这份报纸在后面的方面在中国关于统计生态学做了评论:数据收集,空间并且时间模式分析,种类丰富和种类区域关系,人口动态,种类亲密关系,社区类似和社区簇分析,和社区分类。
简介:TheconstructionOfecologicalenvironmentisoneofthefivesignificantprojectsofChina'sWesternDevelopment,andarrangesinthefirstplace.Inthepastfewyears,theconstructionsofecologicalenvironmentmademuchgreatprogress,butexposedmanyurgentproblemstobesolved,Examiningthegainandlossclosely,
简介:Atpresent,greenurbanizationprocessisintheinitialstateinChina.Intheprocessofdevelopment,howtopromoteurbandevelopmentandurbanizationwillhighlyintegrated.Andtheecologicalenvironmentprotectionandeconomicdevelopmentisanurgentproblemtobesolved.Basedontheguidanceofdeepecology,thispaperstudiesthedevelopmentprocessofgreenurbanization;andliteraturereviewmethodandexemplificationmethodareadopted.Firstly,theconceptofgreenurbanizationisdemonstrated.Secondly,combinedwiththecurrentsituationofgreenurbanizationinChina,guidedbyanalysisofdeepecology,thechallengeforthedevelopmentofurbanizationisanalysed.Finally,basedonthedeepecologyguidedbyrevelation,thegreenurbanizationpathisputforward.
简介:气候和植被的改变的高度的坡度由集体举起效果(MEE)是进一步复杂的,特别在高、广泛的山区域。然而,为山的这效果和它的含意高度的带一直不好直到最近学习了。这篇论文提供在过去的5年里执行的研究的概述。MEE是几乎,山山岳和罐头的加热效果在在里面之间并且在一个山团外面的给定的举起上被定义为温度差别。它能数字地与intra山脉底举起(MBE)的三个因素被建模,纬度和测湿的陆性率;MBE通常充当主要因素因为MEE并且,在很大程度上的大小能代表MEE。MEE比在山群众的外面在内部导致更高的treelines。在4800-4900m和snowlines成长在大约6000m发展在做山区的森林南部的西藏的高原和中央安第斯山脉,和森林到的大区域在在世界的很多高山的3500m上面实时。当考虑MEE时,全球treelines的高度的分发能与高精确被建模,结果证明MEE贡献大多数到treeline分发模式。没有MEE,森林能仅仅发展对在生态的模式将多是的海水平和世界上面的大约3500m最高更简单。MEE的quantification应该进一步与更高的分辨率数据被改进,它的全球含意将进一步被表明。
简介:TheHezhengareaofGansuProvinceproducesthemostabundantmammalfossilsinChinaaswellasthewholeEurasia,anditalsoproducesotherCenozoicfossilsofdifferentanimalsandplants.Therefore,allofthemarenamedtheHezhengBiota.Mammalsareverysensitivetoenvironmentalchanges,andthustheevolutionofmammalianfaunasintheHezhengareareflectsthestrongupliftoftheTibetanPlateauduringtheLateCenozoic,whichdramaticallyaffectsenvironmentalchanges.IntheHezhengarea,micromammalsarenotveryrich,butsomeofthemstillareimportant.ItisrelativelyuncommonthatthreeprimatesarefoundfromtheMiddleMioceneandtheEarlyPleistocenedeposits.SincetheMiddleMiocene,carnivoreshavebecomeimportantcomponentsintheecosystemoftheHezhengarea,anddominatedintheEarlyPleistocene.TheMiddleMioceneisatimeofhighdiversityforProboscidea,characterizedbyshovel-tuskedelephants.PerissodactylsintheHezhengareaareveryabundant,especiallyLateOligoceneandLateMiocenerhinocerosesaswellastheLateMioceneandEarlyPleistocenehorses.FromtheMiddleMiocene,artiodactylsbecameimportantcomponentsofthemammalianfaunas,especiallybovids.
简介:侵略种类被他们的人口的快速的生长和传播在在新产地建立一个立脚点以后描绘,并且现在有否定地影响它是的生物多样性和经济的如此的种类的许多例子不清楚某种类为什么能成为成功的侵略者,而大多数(就算仔细联系了)我们以前建议了的遗体noninvasive如果他们向侵略者是无害的,寄生虫与入侵种联系了的一个假设能支持他们的侵略成功但是对他们在我们讨论的这里的最新开拓殖民地于的产地的竞争者或食肉动物有害最近被发现了在里面的microsporidia侵略瓢虫Harmoniaaxyridis贡献它我们显示出的侵略成功在整个世界从多样的收集地点采购的所有H.axyridis甲壳虫带这建议的丰富的microsporidia本国、侵略的H.axyridis人口与这些被联系,这容忍了寄生虫,它是可能的在扩大前在本国的人口存在而非在最新开拓殖民地于的区域被获得我们在H.axyridis的不同发展阶段期间描述microsporidia的致病,我们探讨它由竞争本国的瓢虫种类的感染的鸡蛋和幼虫的predation可以导致的可能性他们的感染并且最终到他们的衰落最后,我们讨论我们的起始的假设:被一只侵略向量昆虫容忍的microsporidia能对易受影响的本国的竞争者或食肉动物种类是活跃的。
简介:蚜虫可以怀有许多容许的细菌的endosymbionts。这些共生者是有高保真度的播送似母亲,他们也显示出水平传播,以太低而无法启用传染传播的率的虽然。如此的共生者需要提供一个网络健康好处给他们的主机坚持并且传播。几个共生者由发展能力保护他们的主人免于parasitoids完成了这。考察实验工作和一些当模特儿,我探索授与共生者的抵抗的进化生态学到parasitoids以便理解防御共生者频率怎么在在蚜虫人口观察的中间的层次被维持。我进一步证明防御共生者由为抵抗扩充可继承的变化改变在蚜虫和parasitoids之间的相互的选择,由增加host-parasitoid相互作用的基因特性,并且由导致环境依赖者交易。这些效果对被频率依赖者选择驾驶的很有活力的、调停共生者的coevolution导致。最后,我主张防御共生者为害虫蚜虫的生物控制代表一个问题,并且我建议由利用parasitoids’减轻这个问题很快发展counteradaptations到授与共生者的抵抗的表明的能力。
简介:Theresearchofecologyandlandscapereestablishmentofriverfloodplainisconsideredfavorabletoitsconservationanddevelopment.Thesimilarityanddifferenceamongriverfloodplain,wetland,riversideandshorehavebeenreviewed,aswellastheprogressintheresearchoffloodplainecologyreestablishmentinquantitativeevaluation,vegetationrestoration,theinfluenceonanimalhabitatandtheapplicationofeco-engineering;andofthelandscapereestablishmentinresourcedevelopmentandutilization,landscapefeatureandchanges,landscapefunction,structureandcontrol.Thepotentiallyimportantfieldsareexpectedtobethechangeoflandscapepatternindifferentscales,thereasonableprotectionandutilizationinthefloodplaintourism,thesimulatingandmonitoringoflandscapedynamics,theplanninganddesigningmethodsoffloodplainlandscapeandthemanagementoffloodplainecosystems.
简介:Avegetationevolutionmodelinfluencedbyadegenerationofsoilecologicalfunctionswassetup.Threeidealcommunitiesofa)trees,b)shrubs,andc)herbagepopulationswerefirstsimulated.Thennumericalsimulationsoftheevolutionaryanddevelopmentalprocessesofanaturalforestcommunity,whichiscomposedofover100species,wereconducted.Resultsofthestudyshowedthata)inallcommunities,soildegenerationnotonlydrovesomeweakerspeciestoextinction,butalsoafewdominantones;b)thereweredifferentresponsescaleswithspeciesinanidealtreemetapopulationthatcouldpersistaslongasathousandyears,withshrubsinanidealshrubmetapopulationthatcouldpersevereforseveralhundredyears,andwithspeciesinanidealherbagemetapopulationthatcouldbecomeextinctwithin10years;andc)eachmetapopulationexperiencedthreeevolutionarystagesduringadaptationtotheenvironment:a)thestageofcompelledadaptationorresistance,b)theadjustedstage,andc)thestabilizedstage.
简介:Onebigissueinthe'LargeCentralization'eraiswhatfarmerswoulddoforlivingwhentheyhavebeencentralizedtoliveintallbuildingsandtheirlandshavebeencirculated?Now,thedistancebetweenfarmersandtheirworkplacesarelimitedto10minutesintheplanning.ComparedtotheconstructionofhappyandbeautifulnewcountrysideinChina,SichuanProvinceproposedthe
简介:ThetestpanelshavebeensetforoneyearinthewatersofDaguanbanreclamationareaofLuoyuanBaytoinvestigatetheecologyoffoulingcommunity.39speciesofanimalsand8speciesofalgaehavebeenrecordedduringtheinvestigation.ThemainperiodofsettlementextendsfromMaytoOctober.ThepeakperiodsofbiomassandcoveredarearateofthepanelshavebeenobservedfromJunetoSeptemberBalanusreticulatus,Bugulaneritina,Molgulamanhattensis,TubulariamesembryanthemunandEnteromophainterstinalisarethedominantspeciesinthefoulingcommunity.Speciesdiversityindex,speciesrichness,speciesevennessandenvironmentalfactorsaredetermined,theresultsofwhichindicatethatwaterflowspeedisthemostimportantfactorinfluencingthespeciesandquantitycompositionofthefoulingcommunity.Astothemaricultureproductioninthereclamationarea,themainharmfulperiodrangesfromJunetoSeptember.
简介:Behaviorsofsikadeerinspringwerestudiedbyscansampling,adlibitumsampling,andall-occurrencerecordingmethodsduring1998.Theresultsshowedthatbehaviorsofsikadeerinspringcanbeclassifiedbysevencategories:grazing,ruminating,bedding,moving,standing,drinking,alert,agonisticandotherbehaviors.Variousbehavioralmodelsweremoreregular.Grazingbehaviorwasakindofmainlybehavioralmodel.
简介:Peopleandculturecoexistandhumanresourcesdevelopmentandregionalculturalecologyintegrate.Thepresentthesisforthefirsttimeputsforwardtheintegrationmodeofhumanresourcesdevelopmentandculturalecology,arguesthatpersonnelinnovationshouldbeattractedbymotiveinjection,openculture,resourcesintegration,culturedilution,thinkingblendingandpeople-orientationanddiscussesthetransmissionmechanismforfunctionsofintegrationmodeofhumanresourcesdevelopmentandculturalecologyfromtheaspectsofculturalvalues,livingstylesandculturalindustry.