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ID:32503192
大小:3.27 MB
页数:78页
时间:2019-02-09
《北盘江干流鱼类资源环境监测及鱼类保护研究》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、三峡大学硕士学位论文area;Hydropowerdevelopmentresultthechangesofhydrologicalregime,andjetstreambecomessloworstaticreservoirbay,thecompositionoffishisalsodominatedbytherapids,water-basedthestaticslowflow;HydropowercascadedevelopmentchangesthepHysicalandchemicalpropertiesofwater,mainlyint
2、ransparencyincreased,themagnitudeofthetemperaturechangeswiththeseasonsdecreases,tendtohomogenize,thePHofwaterbodiesenhance,theriverwaterflowratesbecomesmallerandsoon;Thefoodbiologicalbasischangesafterthereservoirformation,andwaterbiologicalproductivitycapacityincrease,sofishst
3、ocksandfishingvolumewillrise;theadaptationslowfloworhydrostaticenvironmentfisharethemajorcomponentinthecatching,andtheproportionofrawfishadaptingtotheenvironmentoftheriverwaterdownorevendisappearinthecatching.5)FishresourcesprotectionmeasuresTheprotectionmeasuresofBeipanjiangr
4、ivercascadehydropowerprojectdevelopmentinfluenceonfishresourcesmainlyincludeengineeringmeasures,buildingfreightfishboatandartificialfishingthroughthedamarefeasibleandtheengineeringmeasuresofrelativelygoodeffect.Artificialreproductionandreleasing,insituconservation(Importanthab
5、itatprotection,theestablishmentofprotectedareas),Scientificcontrolandstrengthenappropriatefisherymanagement.Keywords:BeipanjiangRiver;FishResources;StatusSurvey;Influence;Protection;DIDSONVI万方数据三峡大学硕士学位论文目录1.绪论...................................................................
6、............................................11.1研究背景............................................................................................11.2研究目的和意义................................................................................41.3主要研究内容、研究方法和技术路线......................
7、.......................52.北盘江监测断面环境现状及DIDSON监测方法.........................................82.1自然环境及工程概况........................................................................82.2流域水电开发概况..........................................................................102.3双频识别声呐DIDSON
8、简介...........................................................
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