简介：ThefuelbreakswereestablishedinsouthChinafrom1950s.Withtheactiveworkoflocalcommunitiesandstategovernment,thefuelbreakshavebeenbuiltfor398,000kilometers.Insomeareas,fuelbreaksandfirebreakshaveconstructedanetworkprimarily,suchasintheprovincesofFujian,Guangdong,Guangxi.Thefuelbreakscanpreventforestfireeffectively.Thathasbeenapprovedbyactualexamplesandburningtests.Thefuelbreaksalsobenefittheforestecosystemandenvironment.Thispapermakes...

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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。

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简介：Nativetreesplayimportantrolesinurbanforestry,suchasadeepculturalbackground,astrongecologicaladaptability,ahighperformance-costratioandaconvenientmanagement.Butnowtherearesomedifficultiesinnativetrees'utilizationandpopularizationduetofewstudyonlandscapeplant.Inordertoseekanabnormalandartificiallandscapingandtoproduceaneffectiveresultassoonaspossible,nativeandforeignplantscanbeproperlyusedasanavailableresourcebyimprovingtheirtechnologicallevelandemphasizingnaturalbalance.ThenChineseclassiccultureandgreeneconomicscanbecombinedwithbeautifulforestrybyimplementingurbansustainabledevelopment.

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简介：Organicbiocidesastimberpreservativeshavearousedmoreandmoreattention,becausemetalsaltsespeciallyarsenic,chromeandsoon,havebeensuspectedtobepoisonoustothesoilandaquaticanimals,aswellasthedisposalofpreservedtimberwastes.Therefore,anumberofeffectiveorganicbiocideshavebeenselectedtopreventwoodorbamboofromdecay,mildew,stainandsoon.Mostoftheseproductshaveenteredintothemarket.Withpeople’sincreasingawarenessoftheenvironmentalprotection,organicbiocideswilleventuallyplayimportantrolesintimberpreservationinthefuture.Thispapersummarizedthestudiesonapplicationoforganicbiocidesaswoodorbamboopreservatives,includingresistantmechanisms,commonlyappliedtypesandeffectsagainstwoodorbamboofungi,approachestodetectingtheamountoforganicbiocidesintimberandtheirinfluencesontheenvironment.Basedonthediscussionabove,theauthorspredictedthedevelopingprospectoforganicbiocidesintimberpreservation.

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简介：Eucalyptusisanimportanttreespeciesontheglobalscale,andalsoitisthemodeltreeinforestgeneticresearch.Therefore,theresearchandapplicationofmolecularmarkingtechnologyinhereditybreedingofEucalyptushaveimportanttheoreticalsignificanceandpracticalvalue.ThispaperdescribedseveralmajormolecularmarkertechnologiesandtheirapplicationtohereditybreedingofEucalyptus,andprospectedthefutureapplicationandstudyofthesetechnologies.

简介：Alloftheplantscanbecombusted.Themechanismofforestbeltsresistanceisthatthetreespeciesweren'tliabletobeburnedcomparedwithotherplantspecies.Inthispapernewconceptsonfireresistanttreesandfuel-breakstreeswerepresented.Thefireresistancemechanismincludes3aspects,fire-resistanttreespecies,rationalconstructionforestbeltsandenvironment.Treecrownscanresistfireforwarding.Forestbeltscanformtheenvironment,whichisnoteasytofire,andalsomakefuelsdistributeddiscontinuous.Thenetworkofforestbeltshaslargeareaofconiferforestsegregated.Theidealf'ireresistanttreespecieshadbettertoembracesomecharacteristics,suchashighf'ireresistance,rationalplantingandbiologicalcharacteristics.

简介：Ectomycorrhizae(ECM)isbecomingtheresearchhotspotbecauseitcanimproveplantnutrientcyclingandstorageandstrengthenplantresistancetoadversityanddisease.ItiswellknownthatECMcanenhanceplantresistancetosoil-borneandstemdiseases.Themechanismsmainlyinclude:planttenderrootswillbeprotectedwellbysheath;ECMcanfacilitateuptakeandtransportcapacityofnutritionandwatertorootsandincreaseplantsvigor;ECMcancontrolorblockpathogenstoinvadetrees;ECMcanactivateresistance-relatedenzymesofthehosts;italsocanformrhizospheremicrobialcolonyandestablishroot-rhizospheremicro-ecologicalenvironment.Somycorrhizaltechnologyhasbecomeoneofthemostimportantmethodsofecologicalcontrolandbiologicalcontrolofplantdiseases.ThispapersummarizestheapplicationanddevelopmentofECMinforestdiseasecontrolandalsoraisessomeideasontheirtheoryandapplicationresearchesinthefuture.

简介：Toimprovetheaccuracyandeffectivenessofforestpestsforecasting,basedoncurrentforecastmodel,integratingthedatabaseandWebGIStechnology,apracticaldesignandconstructionapproachofforestpestknowledgebasewasputforward,andtheforecastsystemonWebapplicationframeworkwasrealizedwithsatisfactoryempiricalresults.

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简介：ThispaperestablishedanintegratedstandgrowthmodelofMongolianoak(ISGM_oak)usingthedatafrom61permanentsampleplotsmeasuredin1997and2007.ISGM_oakisagroupofnonlinearsimultaneousequations.Themethodofnonlinearerror-in-variablesimultaneousequationsisusedtoestimatetheparametersofISGMoakwiththestatisticalsoftwareForstat2.0,sotheparameterestimationofthegroupofcorrelatedequationsinISGMoakisunbiasedandtheequationsarecompatible.Modelvalidationusingbootstrapmethodshowedthatboththeaveragerelativeerrorandsquareerrorarelessthan15percent.TheISGM_oakmodelcanbeusedtosimulatethestandgrowthwithdifferentvaluesofsiteindex,standdensityandtodrawstanddensitymanagementdiagramfordecision-making.

简介：本文通过对理想点法进行分析，认为该法取不同的ｐ值代表决策者对不同目标的偏爱程度；但ｐ值过大模型求解比较困难，故实际应用时ｐ值取较大的值并不现实．为进一步突出决策人对不同目标的偏爱程度，作者对理想点法进行改进，引进了各目标的权重，提出了加权理想点法．与前者比较，它进一步突出了不同目标对决策结果的影响，使决策结果更符合决策者的愿望，便于在生产中实施．通过用该法对山西省千秋沟林场某经营类型进行收获调整，表明用该法进行森林收获调整，到调整期末龄级结构基本达到完全调整林状态，且可将决策者对不同目标的要求落实到合理水平上．

简介：Treesarethemainelementsinurbanforestconstruction,andtheirapplicationdirectlyreflectstheconstructionlevelofurbanforest.Twocities,HarbinandHefei,wereselectedasrepresentativemiddlecitiesinthisarticle.Theapplicationoftreespecieswasanalyzedbycontrastinurbanforestconstruction,andtheirapplicationinHefei'sdifferentlandtypeswasstressed.Basedonthis,theapplicationoftreespecieswasfurtherdiscussedduringtheprocessofurbanforestconstructioninChinaThusitprovidedreferencesforthenationalurbanforestconstruction.

简介：Thepaperreviewedthebackgroundofpublic-privatepartnership(PPP)development,describedPPPconcept,characteristicsandbasicmodels,andanalyzedthenecessityandfeasibilitytodeveloplanddegradationcontrolPPP.ThentheexperiencesthatElionResourcesGroupinInnerMongoliahasaccumulatedinKubuqiDesertcontrolanddevelopmentaswellastherevelationsweresummarizedwiththehopetoprovidereferenceforestablishinglanddegradationcontrolPPPinaridareaofwesternregion.

简介：Approximating-natureforestrymanagementtechniqueapplicationresearchisdevelopedinCiinninghamialanceolataplantationfor17yearsatJiuxianForestFarminSongxiCounty,FujianProvince.TheresultsshowthatthebiodiversityoftheC.lanceolataplantationwasincreasedfrom48.5±3.3to74.6±3.3afteradoptingclose-to-natureforestrymanagementtechniques.Comparedwithconventionalmanagementmethod,thetestedforest’ssoilfertilitywasimproved:thesoilmoisture-physicalpropertiesandsoilexchangepropertieswereameliorated,thesoilnutrientcontentswereincreased;theaveragebreastheight,averagetreeheight,individualvolume,Chinesefirstandvolumeandstandtotalvolumewerepromotedby9.24%-17.64%,8.61%-17.29%,27.94%-58.46%,2.38%-28.64%and8.63%-37.55%,respectively.Theworsethesiteconditions,thegreatertheeffectindexeswithclose-to-natureforestrymanagementtechniqueswereimproved.