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简介：Bydrawingonstudiesofdomesticandinternationalforestlandscapeassessmentandvisualevaluationofurbansoundscape,wesummarizedthemainfactorsaffectingtheforestsoundscape.Onthisbasis,weestablishedanevaluationsystemforlevel2class3forestsoundscape.Elevenindicatorsoftheforestsoundlandscapeaestheticevaluationsystemandtheweightoftheproductwerescored,andthentheaccumulatedscoredvaluesweredefinedasthesoundlandscapeaestheticindex.Theacousticlandscapeindexwasusedtomeasurethesizeoftheforestlandscapebeautifuldegree.

简介：Amodelforsimulatingcadmiumtransportinasoil-plantsystemwasbuiltusingacommercialsimulatingprogramnamedPowersimonthebasisofinput-outputprocesseshappeninginthesoil-plantsystem.COnvectiveanddispersivetransportprocessesofcadmiuminsoilprofileareembedded.Simulationsonadailybasehavebeendoneuptoatotalsimulatingtimeof250years,Resultsshowthatapplicationsofsewagesludgeandfertilizeratthesimulatedrateswouldonlycauseslightcadmiumaccumulationsineachlayerofthesoil,andcadmiumaccumulationwouldbelevellingoff,reachinganequilibriumconcentrationslayerbylayerdownwardaftercertaintime.Thetimescaletoreachanequilibriumconcentrationvariesfrom10yearsforthetopthreelayerstoover250yearsforthebottomlayers.Plantcadmiumuptakewouldincreasefrom52umm^-2underinitialsoilcadmiumconcentrationsto65ugm^-2underequilibriumsoilcadmiumconcentrations,whichwouldnotexceedthemaximumallowablecadmiumconcentrationinwheatgrains.Mainparameterswhichinfluencecadmiumaccumulationandtransportinsoilaretotalcadmiuminput,rainfall,evaporation,plantuptakeandsoilproperties.

简介：Byreviewsoftherelatedpapersandworksabouturbangreenspacesystemplanningathomeandabroad,thepaperdefinedtheconceptandclassificationofurbangreenspacesystem,andfunctions,tasks,structureandlayoutofgreenlandsystemplanning.Inthemeantime,thepaperintroducedrelatedtheory,reviewedthedevelopmentandcurrentsituationofdomesticgreenlandsystem,andfinallyforecastedthedevelopmenttrends.

简介：Basedonthecurrentstatusofnature,economyandsociety,andinthelightofinterconnectedpatternsofmaterial,energyandinformationflows,theForestEco-NetworkSysteminChina(CFENS)istobeestablishedtoharmonizesthedevelopmentofhuman,natureandsocietyinthiscountry,whichisofintegrity,multi-function,highefficiencyandoperability,andviewsthewholemainlandasanecosystemwithdifferentbigparchesconsistingofdifferenttypesofforests,grasslands,flelds,barrenhill...

简介：ＴＨＥＷＡＴＥＲＭＥＬＯＮ－ＣＨＩＮＥＳＥＦＩＲＩＮＴＥＲＣＲＯＰＰＩＮＧＳＹＳＴＥＭ￥ＢｙＷｅｎＹｕａｎｇｕａｎｇＴｈｅｗａｔｅｒｍｅｌｏｎ－Ｃｈｉｎｅｓｅｆｉｒ（Ｃｕｎｎｉｎｇｈａｍｉａｌａｎｃｅｏｌａｔａ）ｉｎｔｅｒｃｒｏｐｐｉｎｇｓｙｓｔｅｍ...

简介：该文探讨了在ＧＩＳ下，以地块为单元建立土地利用决策系统的方法．决策系统由多目标规划、目标判别、专家决策模型三个部分组成，三者与ＧＩＳ有机结合，实现计算机自动土地利用决策．

简介：Methaneoxidationbypaddysoilsinaclosedsystemcouldbesimulatedbytheequationx=k1xo/(k1+k2x0)exp(k2t)-k2x0wherex0andxaretheCH4concentrationsattimezeroandt,respectively;k1andk2areconstantsrelatedtotheconstantoffirst-order-kinetics.AccordingtotheequationthechangeofsoilabilitytooxidizeCH4couldbeestimatedbytheequationAc=k2/k1(x0-x)x0k2/k1-1.TheresultsshowedthatthesoilabilitytooxidizeCH4varied,dependingontheinitialCH4concentration.HighinitialCH4concentrationstimulatedsoilabilitytoconsumeCH4,whilelowconcentrationdepressedtheablility.Thischaracteristicofpaddysoilseemedtobeofconsiderablesignificancetoself-adjustingCH4emissionfromfloodedricefieldsifthereexistoxicmicrositesinthesoil.

简介：BasedontheanalysisonexistingproblemsinChina'sforestryscience&technologysupportsystemandinviewoftherequirementsofmultifunctionalforestrydevelopmentforscience&technologysupport,thepaperconstructedascience&technologysupportframeworkformultifunctionalforestry,comprisingtechnologyinnovation,achievementstransfer,extensionandapplication,andpolicyguarantee.Majorcountermeasureswereproposedtoconsolidatethescience&technologysupporttomultifunctionalfores...

简介：以中文Ｗｉｎｄｏｗｓ３．１为系统运行环境，以ＷＩＮＧＩＳ为基础，用ＭｉｃｒｏｓｏｆｔＶｉｓｕａｌＢａｓｉｃ４０作为开发工具，建立了荒溪分类和危险区制图模型及其信息系统．该系统由文件管理子系统、属性数据管理子系统、图形数据管理子系统、应用模型子系统等构成．应用结果验证了系统模型的各项功能，表明系统设计合理，运行稳定、安全．

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简介：Amini-plotfieldexperimentwasconductedonaloamyclayOxisoltocompareandevaluatePabsorptionandtransferinplantorgansandPmovementinsoilprofileatthreePapplicationdepthsunderthesoybean-citrusintercroppingversusthemonocultureusinga32Ptracertechnique.TotalPabsorption(Pt)bysoybeanandPaccumulation(Pa)insoybeanorgansdecreasedsignificantly(P<0.05)undertheintercroppingincontrasttothemonoculture.Withintercropping,when32Pwasappliedintopsoil(15cmsoillayer),total32Pabsorption(32Pt)insoybeanswassignificantlylower(P<0.05),butwhen32Pwasappliedtodeepersoillayers(35or55cmsoillayer),32Ptinsoybeanswassignificantlygreater(P<0.05).ThepercentageofPinleavestototalP(Pa/Pt)and32Pinleavestototal32P(32Pa/32Pt)forsoybeanwere(?)25%andthoseofroot(?)12%.WhenPwasappliedintopsoiland55cmsoillayer,nosignificantdifferenceswerefoundbetweenintercroppingandmonocultureforPtofcitrus.ThePabsorbedbycitruswastransferredrapidlytothegrowingorgansofabovegroundduringtheexperiment,andthespeedoftransferringtothegrowingorgansslowedwhenPwasappliedtothedeepersoillayers.Inintercropping,Pmobilitywasheightenedinthesoilprofile,andPindeepersoillayersmoveduptotopsoilmorerapidly.

简介：ChallengesandfocusthatMeasureable,ReportableandVerifiableofREDD+activitieswillfaceareanalyzedbaseonprovisionsrelatetoMRVforREDD+inUNFCCC.Itwillfacethechallengesoflakeofmessagesinestimatingbiomasscarbonstorageandreferencelevel,certificationstandards,thenationalmethodologyofREDD+activities,andfinancialsupportifmeasurable,reportableandverifiableREDD+activitiesaredevelopedinChina.Basedontheresultsoftheanalysis,thedifferenttypesforREDD+activitiesthatadapttoChinesesituationareputforward,anditwasdesignedthattheframeworkonMeasuring,ReportingandVerifyingSystemforREDD+activitiesinChinaincludinggeneralindicatorsuchasobjectives,implementation,contributiontosustainabledevelopmentandpovertyeradication,environmenteffectiveness,sustainabilityandcost-effectiveness.

简介：化肥氮(N)的高率在东南的中国在温室蔬菜地里被使用最大化生产；然而，如此的集中的蔬菜生产的N预算尚待被探索。这研究的目标是以五N(脲)应用程序率(0，348，522，696，和870kgNha1year1)在西红柿，黄瓜，和芹菜的年度旋转的一个温室蔬菜系统决定年度N平衡和损失。到050厘米土壤层的全部的N输入从531～1053kgha1，并且N化肥是主要N来源，为全部的年度N输入的66%83%的财务。在比较，总共的灌溉水，湿免职，和种子占了不到1%全部的N输入。化肥N使用效率仅仅在870kgNha1的常规申请率下面是18%并且当申请率从522～870kgNha1增加了，减少了。明显的N损失是196201kgNha1，71%86%被以522870kgNha1的申请率沥滤失去。因此，沥滤是以高N申请率的主要N损失小径，N的数量沥滤与在黄瓜季节期间使用的N成正比。而且，溶解器官的N说明了10%沥滤的N，而NH3挥发仅仅在五N下面贡献了明显的N损失的0.1%0.6%，申请在这个温室蔬菜系统评价。

简介：Urbanforestisanimportantcompositionandthewindowandsoulofmoderncities,whichhasacloserelationshipwithecologicalenvironmentandinvestingenvironment.SourbanforesthasbeenconstructedinChina.HuainingCountycouldholdofthehistoricalopportunityandcomeupwiththegreatblueprintofforestecologicalnetworksystemconstructionforthenewtown.Thispapermainlyintroducestheguidingideas,principles,goalsandoveralllayoutsoftheconstructioninthenewtown,andhopethatitwillbeamodelforothercounty-levelforestecologicalnetworksystemconstructioninChina.

简介：ComparedwiththespeciesofLeucesection,thedifficultyinplantregenerationduringtissuecultureforthespeciesofAigeirossectionisakeylimitingfactorfortheirapplicationingeneticengineeringofforesttrees.Inthisstudy,theplantgrowthregulatorscombination,copperconcentration,lightintensity,andtheselectionpressuresofkanamycinwereinvestigatedusingleavesofPopulus×euramericanacl.’Bofeng’asexplants,andastableandhighefficientregenerationsystemwasestablished.Usingthissystem,boththeshootregenerationrateandrootingratewereupto100%,andtheaveragenumberofdifferentiatedshootsineachleafexplantwasupto20,andthesurvivalrateofseedlingsreached98%.Theoptimalselectionpressureofkanamycininshootinducementforleaf-explantwas40mg·L-1,andtheoptimalselectionpressureofkanamycininrootinducementofadventitiousbudwas20mg·L-1.TheauthorsalsofoundthatdifferentiationrateofadventitiousbudsofP.×euramericanacl.’Bofeng’couldbesignificantlypromotedbyincreasedcopperconcentration,andthisisthefirstreportaboutthekeyroleofcopper（Cu）inexplantregenerationofPoplars.ThisregenerationsystemwithhighfrequencywhichwasestablishedbytheauthorswasasgoodasthatofspeciesofLeucesection,anditprovidesagoodtechnologicalplatformforgeneticengineeringofforesttreewhichusesthespeciesofAigeirossectionasmodelmaterials.

简介：RedsoilisaveryimportantsoilresourceinsouthernChina.However,duetobeingsimultaneouslyofhighproductivepotentialitiesandseverelydegraded,itneedsharnessingurgently.RedSoilResourceInformationSystem(RSRIS)basedonremoltesensingandgeographicinformationsystem(GIS)playsanimportantroleinsurvey,evaluation,utilziationandmanagementofredsoilresource.RSRISofQuzhouCity,ZhejiangProvince(1:250000)andRSRISofLongyouCounty,ZhejiangProvince(1:50000)havebeenmaderespectivelyonSUNSPARCstationandusingRC/INFO.Thispaperintroducesthesystemdesign,databsecreationandsystemfunctions,anditparticularlyfocusesondevelopingappliedmodels,suchasredsoilresourcedivisonandmapping,suitabilityevaluation,erosionriskevaluation,plantutilizationzoneetc.TheproblemsonstudyofRSRISanditsdevelopingstrategyarealsodiscussed.

简介：Windvelocityreductionofcoastalshelterbeltsystemwasmonitoredfor1monthin3weatherstationsinNanhui,Shanghai,andthebenefitsofshelterbeltsystemandtrunkshelterbeltforestwerecomparedinthispaper.Theresultsshowedthewindvelocityatthefirstweatherstation(W1),whichlocatedinfrontoftrunkshelterbeltforestbytheseaside,wasthebiggest,withtheaverageof9.36m/s;thewindvelocityatthesecondweatherstation(W2)waslowerthanthatatW1,withtherangeof0to18.2m/sand...

简介：Ｉｎｔｈｅｐｒｏｃｅｓｏｆｂｕｉｌｄｉｎｇａｓｏｃｉａｌｉｓｔｍａｒｋｅｔｅｃｏｎｏｍｙ，ｉｔｉｓｉｍｐｏｒｔａｎｔｔｏｓｔｒｅｎｇｔｈｅｎｔｈｅｓｏｃｉａｌｓｅｒｖｉｃｅｓｙｓｔｅｍｉｎｃｏｍｍｕｎｉｔｙｆｏｒｅｓｔｒｙｔｏｓａｆｅｇｕａｒｄｔｈ...

简介：Alongwiththedevelopmentofcomputertechniques,theapplicationofcomputerinthree-dimensionalvisualizationsimulationofplantgrowthprocesshasbeenpaidmoreandmoreattention.TakingCunninghamialanceolataasanexample,themorphologicalparametersfromtheperspectiveofthevisualsimulationweredesignedandthetrees’morphologicalcharacteristicswereanalyzedbasedonthesurveydata.CombinedwithIFS(IteratedFunctionSystem)underthecontrolofthegrowthcurve,byusingObject-orienteddesignmethods,andaccordingtoAPIandmodelrenderingtechnologyprovidedbyDIRECTX9.0,athree-dimensionalvisualizationsystemonthegrowthanddevelopmentofC.lanceolataindividualtreeweredevelopedonthe.NETandDIRECTX9.0platforms,whichrealizedthestaticanddynamicthree-dimensionalvisualizationsimulation.