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  • 简介:Intheprocesofbuildingasocialistmarketeconomy,itisimportanttostrengthenthesocialservicesystemincommunityforestrytosafeguardth...

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  • 简介:1ThestudybackgroundandgoalsGuizhouprovinceissituatedintheeasternpartofYunnan-Guizhouplateau,mountainandhillyareaaccountsfor90%ofthetotalarea,isthetypicalmountainousagricultureprovince,andisalsoaprovinceconcentratedwithethnicminorities.Guizhouisthepoorestp

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  • 简介:ThetestpanelshavebeensetforoneyearinthewatersofDaguanbanreclamationareaofLuoyuanBaytoinvestigatetheecologyoffoulingcommunity.39speciesofanimalsand8speciesofalgaehavebeenrecordedduringtheinvestigation.ThemainperiodofsettlementextendsfromMaytoOctober.ThepeakperiodsofbiomassandcoveredarearateofthepanelshavebeenobservedfromJunetoSeptemberBalanusreticulatus,Bugulaneritina,Molgulamanhattensis,TubulariamesembryanthemunandEnteromophainterstinalisarethedominantspeciesinthefoulingcommunity.Speciesdiversityindex,speciesrichness,speciesevennessandenvironmentalfactorsaredetermined,theresultsofwhichindicatethatwaterflowspeedisthemostimportantfactorinfluencingthespeciesandquantitycompositionofthefoulingcommunity.Astothemaricultureproductioninthereclamationarea,themainharmfulperiodrangesfromJunetoSeptember.

  • 标签: test panel FOULING community ecology RECLAMATION
  • 简介:Thenewurbanizationisanimportantcarrierofecologicalcivilizationconstruction,andecologicalold-agecareistheconcretemanifestationoftheperfectcombinationofthetwo,thepropermeaningofthenewurbanizationconnotationandaninevitabletrendofitsdevelopment.Basedontheanalysisoftheconnotationandrelationshipbetweenthenewurbanizationandecologicalold-agecare,togetherwiththecurrentsituationandexistingproblemsofthecurrentnursinginstitutionsandecologicalold-agecareinXi’anarea,thispaperdiscussesthemajorissuesthatshouldbenoticedwhenconstructingtheecologicalold-agecarecommunityinXi’anandthreemainconstructionmodes.

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  • 简介:ThereisalownutrientlevelintheAoshanBay.InJune1999,thechemicaladjustmentandcontrolexperimentwasmadeintheAoshanBay.Followingtractsinvestigationwascarriedoutbeforetheexperimentandonthe1st,2nd,4th,5th,6thand45thday/aftertheexperiment.Whilethevarianceofamountofphytoplankton,thereplacementofsuperiorspeciesandthespeciescompositionofphytoplanktonwereresearched.TheresultsshowthattheamountofphytoplanktonintheAoshanBayrisesgraduallyaftertheexperiment.CeratiummacrocerosCleveofpyrophytawasthedominantspeciesbeforetheexperiment,itsdominantindexwas37.7%.Sixdaysaftertheexperiment,itsdominantindexdroppedto17.6%.MeanwhilethedominantindexofAsterionellajaponicsCleverosefrom7.1%to39.2%,itbecamethefirstdominantspecies.Forty-fivedaysaftertheexperiment,theamountofphytoplanktonintheAoshanBaywas5.15to137.32timesmorethanthatin1997.

  • 标签: CHEMICAL adjustment and control the Aoshan
  • 简介:ThemethodsofvegetationecologywereusedtoanalyzethecommunitystructureofHefeiRingPark,andspeciescomposition,distributionpatternoftreeheightandDBHweredescribed.Throughcalculationoftreegrowthindexandassociationcorrelationofcomponentspecies,thecommunitystructureswereanalyzed.Theresultsshowedthatcommunitystructuresarecomplex,thereare22pairsofspecieswithpositiveassociation,andtreeindividualinthefollowingcommunitiesgrowwellandaremorestable,themajorarePlatycladusorientalis-Prunuscerasiferafatropurpurea-Osmanthusfragrans,Robiniapseduacacia-Ligustrumlucidum,Robiniapseudoacacia-Ginkgobiloba-Photiniaserrulata,Populuscadadensis-Ligustrumlucidum-Osmanthusfragrans,Sophorajaponica-Ligustrumlucidum-Buxussinica,Cyclobalanopsisglauca-Distyliumracemosum.

  • 标签: 城市森林 森林群落结构 物种组成 树种配置 合肥市 公园
  • 简介:瞄准:比nonsteroidal评估风险因素其它反煽动性的药为在一张西洋化的人口的结肠的憩室的流血。方法:140个病人,在一个社区为征兆的憩室的疾病对待基于的医院,被包括。(21%)三十有憩室的流血的符号。colonoscopy的年龄,性,和结果被收集并且与有非为征兆的憩室形成放血的一组病人相比。记录为comorbidities被考察,例如肥胖,白酒消费,吸烟习惯和新陈代谢的疾病。特殊强调被放在动脉的高血压,心血管的事件,糖尿病mellitus,hyperuricemia和hypercholesterinemia上。结果:与非关于性比率(男性/女性的9/21对47/63)和憩室的本地化为征兆的憩室形成放血有憩室的出血和那些的病人之间没有差别。流血病人在尊重不同变老(73.4+/-9.9对67。8+/-13.0,P<0.013)。重要差别关于hyperuricemia的存在在两个组之间被发现并且类固醇和nonsteroidal使用反煽动性的药。有新陈代谢的疾病也是的三伴随物的病人作为在流血的风险识别了。向前逐步的逻辑回归分析表明类固醇,hyperuricemia和钙隧道的使用作为流血的独立风险因素堵住ers。结论:在nonsteroidal旁边反煽动性的类固醇药使用,反高血压的药和伴随物动脉硬化的疾病是为结肠的憩室的出血的风险因素。我们的结果作为流血的来源支持一个改变的动脉硬化的容器的假设。

  • 标签: 肠疾病 肠梗阻 动脉硬化 胃出血 医院
  • 简介:海洋的生物多样性响应改变的物理环境,随后的生态的变化以及人为的骚乱正在变化。在这研究,在situ的浮游植物样品在1999和2010的7月在Bering海收集了被分析获得在浮游植物社区动力学的这十年,和关联的开始和结束之间的浮游植物社区结构和空间时间的变化,环境因素被调查。5个部门,58个类和属于3个生态的组的浮游植物的153种类的一个总数被识别。绝大多数浮游植物为66.7%全部的种类和95.2%全部的丰富由硅藻财务组成了。就在空间程度和浮游植物样品类型的区别而言,在种类作文有微妙的变化,在在二之间的空间分发的在丰富和重要变化的大改变调查。当潜水艇山峰在Bering海盆被发现时,丰富山峰区域在白令海峡被定位。北方适度的硅藻是主导的植物群,它被广温性、寒冷水的硅藻随后代替。在Bering海的浮游植物社区不是一个单一的一致社区,但是深海洋的集合和浅海的集合创作了。深海洋的集合位于西北的太平洋和Bering海盆,由北方适度的种类统治了(Neodenticulaseminae,Thalassiothrixlongissima,Amphiprora严寒,Chaetocerosatlanticus,Thalassiosiratrifulta,等等)并且散布很广的种类(Thalassionemanitzschioides,Ch。compressus,Rhizosoleniastyliformis,等等),并且由低丰富,甚至interspecies丰富分配,多样的主导的种类和高种类差异描绘了。浅海的集合在大陆人架和Bering海的斜坡上被散布并且主要由寒冷水的种类组成(Th。nordenski?ldii,Ch。furcellatus,Ch。socialis,Bacteriosirafragilis,等等)并且广温性、能在不同盐分之环的种类(L。danicus,Ch。curvisetus,Coscinodiscuscurvatulus,等等),并且它被高丰富,不平的interspecies分配,突出的主导的种类和低种类差异描绘。在Bering海的种类作文和许多浮游植物的空间时间的变化被表�

  • 标签: 植物群落结构 白令海峡 时空变化 浮游植物群落 海洋生物多样性 物种多样性
  • 简介:Inthispaper,weproposealocalfuzzymethodbasedontheideaof"p-strong"communitytodetectthedisjointandoverlappingcommunitiesinnetworks.Inthemethod,arefinedagglomerationruleisdesignedforagglomeratingnodesintolocalcommunities,andtheoverlappingnodesaredetectedbasedontheideaofmakingeachcommunitystrong.Weproposeacontributioncoefficientbvcitomeasurethecontributionofanoverlappingnodetoeachofitsbelongingcommunities,andthefuzzycoefficientsoftheoverlappingnodecanbeobtainedbynormalizingthebvcitoallitsbelongingcommunities.Therunningtimeofourmethodisanalyzedandvarieslinearlywithnetworksize.Weinvestigateourmethodonthecomputergeneratednetworksandrealnetworks.Thetestingresultsindicatethattheaccuracyofourmethodindetectingdisjointcommunitiesishigherthanthoseoftheexistinglocalmethodsandourmethodisefficientfordetectingtheoverlappingnodeswithfuzzycoefficients.Furthermore,thelocaloptimizingschemeusedinourmethodallowsustopartlysolvetheresolutionproblemoftheglobalmodularity.

  • 标签: 检测网络 模糊方法 社区 模糊系数 计算机网络 网络规模