分布式外来有害生物风险分析WebGIS研制

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1、中国农业大学博士学位论文分布式外来有害生物风险分析WebGIS研制姓名：沈文君申请学位级别：博士专业：农业昆虫与害虫防治指导教师：沈佐锐20040501Absttactwi幽inter％tionaltradeandinternationaltourism。theproblemcausedbyinvasivepestisthreatenedhumanlifeandsustainablesocialdevelopment．NowweareadmittedtobecomeamemebcroftheWorldTradeOrganizatio

2、n(WTO)，soanewchallengefacedtousishowtodealwiththisproblem，Withwhtedevelopingofinformationtechnology,especiallyIntemet，GISanddambasetechnology,theWebGIShasbeenthekeytechnologytoinformationizeinvasivepestmanagement。InvasivePestRiskAssessment(IPRA)WebGISaimstomeettheneedo

3、fstrategyformulatingformanaginginavasivepest,whichisbasedonGISandintegratesandmanagesregionalmultidimensional，multiscaleinfornlationfromeconomicsdata，ru'镕ourcedata，statisticsand∞on．IPPAWSisusedtosupportprovideserveiveformanaginginvasivepestbasedonthespecialqueryandanal

4、ysis．Asreferredabove，thesu珥etwasputforward．TobuilddistributedinvasivepestriskassessmentWebGIS，thekeytechnologysweredicussedinthispaper,includingthesystemmodel，databasedeveloping,informationissuingcasedesign，systemframewo暾d霉sign，systemimplementing,syslemsecurityandsyste

5、mdisposingandusing，I．Basedonthesummarizedworks，theoryandmethodsresearchedbyexpert,wediscussedtheinvasivepestriskassessment，fromthepointofsurstainablecircumstancedevelopmentandsustainablePestcontr01．Theriskoftheinvasivepestwasquantifiedb，ecologicalsimilitude，combiningth

6、eenvironmentalandbiologicaldata．Sotheinvas'ivepestriskwasquantifiedandorientatedthroughthissystem，itcanprovidethereasonableresultfordisighingstrategyofinvasivepestmanagement．2．TheWebGISofinvasivepestriskassessmentwasdevelopedintegratedGISandmathematicalmodel．Introducin

7、gdesigninganddevelopingpatternofspatialdecision-makingsystem．firstly,thegoalofthesystemwasconfirmedaccordingtouser’srequirementanalysises；then,thesystemstructureandsystemfuctionsweredesigned；Finally,thesystemwesbuiltontheMapxtreme3．0platformbasedonthesystemanalysis．The

8、functionswereimplemented，includingthedatamanagement，riskquantifing，spaceorientating，graphexporting，andsoon，Testedanda