開放性漁場生態(tài)系統(tǒng)的Gordon理論.pdf

1、東北師范大學(xué)碩士學(xué)位論文開放性漁場生態(tài)系統(tǒng)的Gdon理論姓名：于威威申請學(xué)位級別：碩士專業(yè)：應(yīng)用數(shù)學(xué)指導(dǎo)教師：王克2003.5.1AbstractIntherealworld，economicfactorsaffecttheharvestanddevelopmentoffisheryresourceHence，thestudyofthequestionissignificantinecologyandeconomicsInthispap

2、er，researchofopen—accessfisheryisthebaseBydefinition，anopen—accessresourceisoneinwhichexploitationiscompletelyuncontrolled，AnyonecanharvesttheresourceForexample：highseasBytherestrictionofeconomicinterests，weonlydemandthe

3、economicrent，whichlendstozerenteventuallyIn1954，theeconomictheoryoftheopen—accessfisherywasdevelopeddyHSGordon，andtheclassicaltheeconomicequilibriumconditionsofGordontheorywerebuildedIn[16]，opportunitycostisconsideredand

4、GordontheoryisfurtherHiodj6ed’I’heprimarystudyisinthispaperasfollows：lBydocument[16]，theclassicalGordontheoryisfurthermodi—fledfromchangeablepriceandvariablecost，andthecommonresultsareobtained2TheGordontheoryofn—populati

5、onLotkaVolterraecologicalsystemwithconstantcoefficientsisconsidered，theeconomicequilibriumconditionsofthecorrespondingsystem，andthestabilityofeconomicequi—libriumofsystemarediscussedBytaxingaboutsomeover—exploitationpopu

6、lationshowtestoreoptimalpopulationlevelismoderatelystudiedTheclassicalGordontheoryisimprovedfromopportunitycost3Inthepaper，weconsiderGordontheoryofaclassofsingle—speciesecologicalsystemswithperiodiccoefficientsonopen—acc

7、essfisher)7，andsetuptheordinaryeconomicequilibriumconditionsofthesingle—speciesandgetgloballyasymptoticallystableeconomicequilibrium；theover—exploitationofthesystemandthemodificationoneconomicequilib‘riumconditionsbyoppo

8、rtunitycostareinvestigatedOurresultsincludealmostallnonautonomoussingle—specieharvestingmodelswithperiodiccoefficients；forexample：Logisticmodel，Gompertzmodel，GilpinmodelAynalamodelKeyWordsGordon’stheoryOpportunitycost，Ch