14333.帶有食餌庇護的三種群模型分析

1、分類景，UDQ：‘密飄。壘_開一舅毋聲夕擎碩士研究生學位論文帶有食餌庇護的三種群模型分析申請人：高美學號：2131045培養(yǎng)單位：數(shù)學科學學院學科專業(yè)：數(shù)學研究方向：微分方程及其數(shù)學生物學指導教師：張繼民副教授完成日期：AbstractThepreyrefugescharacterizeaphenomenonthatthereexistdifferentformsofpreyspeciesconservationinordertopro

2、tectthepreyspecies，andplayanimportantroleinthemaintenanceofecologicalbalanceandprotectingbiodiversityThreespeciesecologicalmodelswhichdescribethecomplexrelationshipsbetweenthespecieshaveimportanttheoreticalvalueandpracti

3、calsignificancetoke印theecosystembalanceandmaintainthesystemstabilityInthispaper，weanalyzethreekindsofimportantthreespeciesecologicalmodelswithpreyrefuges，thatis，theapparentcompetitionmodelwithpreyrefuges，intraguildpredat

4、ionmodelwithpreyrefugesandfoodchainmodelwithpreyrefugesOnthebasicoftheoreticalanalysisoftheapparentcompetitionmodelwithpreyrefuges，wefirstdiscusstheeffectofpreyrefugesinprotectingbiodiversityandcontrollingthealieninvasiv

5、especiesResearchresultsrevealthefollowingtwocases：whentheabilityofresistpredationoftwopreysisalmostthesame，preyrefugesarenegativeinprotectingbiodiversity；whentheabilityofresistpredationoftwopreyshasagreatdifference，thewe

6、akerofthepreywithpreyrefugesishelpfultoprotectbiodiversityandmaintaintheecologicalbalanceIfapreyisanalienspeciesintheapparentcompetitionmodel，thelocalspecieswithpreyrefugescanavoidthelocalspeciesextinctionandcontroltheal

7、ienspeciesThenweexploretheroleofpreyrefugesforthreespeciescoexistenceofintraguildpredationInviewofthetheoreticalanalysisandnumericalsimulation，weshowthatwhensharedresourceandintraguildpreywithpreyrefugeshaveapositiveeffe

8、ctinkeepingthreespeciescoexistenceatacertainrangeFinallywestudythefoodchainmodelwithpreyrefugesWeshowpreyrefugesisnegativeformaintainingthestabilityofthefoodchain，butwhenthetoppredatorisinvasivespecies，localpreywithpreyr