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ID:33325504
大小:1.28 MB
页数:44页
时间:2019-02-24
《印度洋黄鳍金枪鱼管理策略评价的初步的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、上海海洋大学硕士学位论文ManagementstrategyevaluationforyellowfintunainIndianOceanABSTRACTYellow-fintuna(Thunnusalbacares)isaneconomicspecieswhoseproductionisthehighestamongtunaspeciesinhighsea.InIndianOcean,theyieldofyellowfintunastayshighinChina‘slongliner.Atpresent,fisheriesresourcesaredepletingworldwid
2、eandthesustainabledevelopmentofyellow-fintunaresourcesismoreandmoreimportant.Howtoprotectitsresourceshasbecomeaninternationalconcern.Sustainableuseoffisheriesresourcesisalwaysonthebasisofscientificmanagement.Therearemanymanagementstrategiestoachievemanagementobjectives.Owingtofisheryisacomplex
3、system,differentmanagementstrategieshavedifferentperformances.What‘smore,thereareuncertaintieswhichcanleadtopotentialmismanagementoffisheriesresources.Thustheprecautionaryapproachesareappliedtoavoidtheriskofmismanagement.Inaddition,unlikescientificexperiments,fisherymanagementinrealityisanirre
4、versibleprocess,anditisimpossibletoimplementseveralmanagementstrategiesonafisherysimultaneouslyandcomparetheirperformances.Howtochoosethebestmanagementstrategiestoachievethemanagementobjectivesisthekeyissueinthecurrentinternationalfisheriesmanagement,aswellasthechallengethefisheryscientistsand
5、managershavetoface.Managementstrategyevaluationisasystematicframework,whichsimulatethefishstockandecosystemviacomputersimulation,andevaluateortestdifferentmanagementstrategieseffectivelyaccordingtomanagementobjectives.MSEcansolvethedisadvantagesoftraditionalfisheries,suchastheuncertaintiesandi
6、mprovethepossibilitiesofsuccessfulfisherymanagement.YellowfintunainIndianOceanisoneoftheveryfewtargetspeciesinthehighseaswithfurtherdevelopmentforChina‘sfisheriesfleet.Thereisanurgentrequirementtostrengthentheresearchonitsfisheryresources.AlthoughIndianOceanTunaCommissionhasassessedtheresource
7、sseveraltimes,therearegreatuncertaintiesinIII万方数据上海海洋大学硕士学位论文determiningthestatusoftheresourcesbecauseofthedifferentdataerrorsandmodelerrorsexisting.Inthisstudy,IdevelopedamanagementstrategyevaluationsystemfortheyellowfintunainIndianOce
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