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1、AdvancedMaterialsResearchVols.160-162(2011)pp1445-1449Onlineavailablesince2010/Nov/11atwww.scientific.net©(2011)TransTechPublications,Switzerlanddoi:10.4028/www.scientific.net/AMR.160-162.1445TheconstructionandanalysisofeutrophicationmodelforCaohaiofDianchiLakeMAOGuo
2、zhu1,a,ZHANGShu2,b,DuHuibin*3,c4,d,WANGHongmei,5,eCHAILihe1,2,3,4SchoolofEnvironmentalScienceandEngineering,TianjinUniversity,Tianjin300072,Chinaabmaoguozhu@tju.edu.cn,zhangshu_113@yahoo.cn,cdeduhuibin@tju.edu.cn,whm111630@yahoo.cn,lhchai@tju.edu.cnKeywords:eutropica
3、tionmodel,principleofmaximumflux,complexsystemsanalysisAbstractTheaquaticecosystemoflakeisacomplexopensystems,thisstudythatisbasedontheprinciplesofmaximumfluxselectsCaohaiastheobject,weapplycomplexsystemsanalysistoconstructeutropicationmodelwhichissuitableforlocalcon
4、ditionsandselectalargertimescaleandcontrolparameterstosimulatetheeutrophicationstatustofindoutthemainfactorsandtoputforwardreasonableproposalsforgivingoutoptimalcontroltechniques.Thismodelcanbeexpandedintimescale,spatialscaleandthenumberofparameters,whilethedifficult
5、yofcalculationandanalysiswillnotbeincreased.Thetrendandinfluencingfactorsofthesystemwillbegotatthesametime.1.IntroductionThereisacloserelationshipamongtheaquaticecosystemoflake,waterenvironment,terrestrialenvironmentandatmosphericenvironment[1,2].Theaquaticecosystemo
6、flake,acomplexopensystems[3]whichisfarfromequilibrium,iscontinuouslyexchangingmaterialsandenergywiththeexternalenvironment,andintheecosystemtherearealotofnonlinearinteractionanduncertainties.WhentheparametersoftheLakeNutritionEvaluationSystemareaffectedbytheinternala
7、ndexternalconditions,thewholesystemwillchange[4].Theexistingtheoryandmethodshaveconsiderabledifficultyindealingwiththeaquaticecosystembecauseofthecomplexityandthevariabilityoftheenvironmentofthegroupelementinthesystem.Moreandmoreattentionisbeingpaidtothepollutioninth
8、ebasinofDianchiLake,increasedeutrophication[5,6]andalgaebloomhavebecometobeveryimportantresearchtopics[7].DianchiLakeiscomprisedofC
