GIS支持下鄱陽湖區(qū)生態(tài)環(huán)境脆弱度評價模型的建立與應用.pdf

1、江西農(nóng)業(yè)大學碩士學位論文GIS支持下鄱陽湖區(qū)生態(tài)環(huán)境脆弱度評價模型的建立與應用姓名：蔡海生申請學位級別：碩士專業(yè)：土壤學指導教師：趙小敏張寧珍2003.5.1UsingGISinFragileDegreesEvaluationofPoyangLakeRegionABSTRACTAfragileecoevaluatiuniStheresultfrominteraetionbetweennatoralfactorsandman’madefa

2、ctorsT0evaluationthefragiledegreesofecoenvironmentofPoyangLakeregion，it’Sveryimportanttotheareaprotectingandimprovingecoenvironmentrealizingsustainabledevelopmentoftheresource，promotingsustainabledevelopmentofthesociety＆

3、economyInthisresearch，theevaluationregionshaveelevencounties，including：Nanchang，XinjianJinxian，liujiang，Yongxiu，Dean，Xinzi，Duchang，Hukuo，YuganPoyangToevaluationthefragiledegreesoftheregionecoenvironment，scientificandeffe

4、ctive，themodelofbasedonspecialparameterevaluationmethod(SPE)isnecessaryTheprincipalsubstance＆procedureoftheevaluationmethodisthat：1Definedresidentialunitofevaluation：Onthebasisofthespecialattributeofevaluationfactorwesel

5、ectedcountyastheprincipalresidentialunitofevaluation2Definedevaluationsystem：Usingprincipalcomponentanalysis(PeA)andindependentanalysis，Wegottheevaluationwhichconsistofnaturalfactorsandmallmadefactorsandsociety＆economyfa

6、ctorsIncluding29factors，suchaSgeology，topographysoil，climate，vegetationlandUse，andsoon3Defineddegreeoftheevaluationfactor：UsingDelphianalysisandtheconclusionofotherexpert’sstudywedefinedthedegreeofallfactors，anddefinedth

7、escoreofthefragileattributeofthefactor(Fj)4Definedfactorproportion：UsingDelphianalysisandanalytichierarchyprocess(^ⅡP)，wegotallfactorproportion(wo5Foundedevaluationmodel：Bythedefineddegreeoftheevaluationfactoranddefinedf

8、actorproportionandcalculatedsurfaceareaofeachdegreeoffactorattributepercentoftheWholeareaoftheresidentialunitofevaluation佰)Nowwegotfragiledegreesofthecooenvironmentoftheresidentialunitofevaluationwiththisformula：FragileD

9、egrees(G)=∑(￡FWi)6Usedevaluationmodel：Usingthemodelofbasedonspecialparameterevaluationmethod(SPE)，wedifferentiatetheevaluationregionwith5fragileregions，including：verylittlefragileregionlightfragileregion，mediumfragilereg

10、ionstrongfragileregion，extremefragileregionFromthisresearch，wegottheconclusion：、，erylittlefragileregion：NanchangcountyLightfragileregion：XinjianCOl20tyYugancountyMediumfragileregion：JinxiaocountyYongxiucoUfltyDuchangcoun

11、tyStrongfragileregion：Jiujiangcounty，DeancountyExtremefragileregion：Xinzicounty，HukuoCOUfll2yPoyangcounty7Analyzedtheevaluationconclusion：Onthebasisoftheconclusionofthefragiledegreesevaluation，weanalyzedcontributing&expr

12、essionoffactorfragileoftheresidentialunitofevaluation8Improvingmeasure：Basedontheanalysisofec0environmentfragiledegreesevaluationofthePoyangLakeregion，wegivesomesuggestiontoimprovingregionecOenvironmentThereare：specialad