31191.基于gis和模糊數(shù)學(xué)的重慶市洪水災(zāi)害風(fēng)險評價研究

1、西南大學(xué)碩士學(xué)位論文基于GIS和模糊數(shù)學(xué)的重慶市洪水災(zāi)害風(fēng)險評價研究姓名：劉國慶申請學(xué)位級別：碩士專業(yè)：自然地理學(xué)指導(dǎo)教師：徐剛20100401AbstractTheStudyofFloodDisasterRiskEvaluationInChongqingBasedOnGISAndFuzzyMathematicsPostgraduate：LiuGuoqingMajor：PhisicalGeographyTutor：ProfessorXu

2、GangAbstractFlooddisasterisoneofChinasmajornaturaldisastersChongqingiSlocatedinthesubtropicalmonsoonzone，andrainstormsoccurfrequentlyinsummerbythethealternatingeffectsofsoutheastmonsoonandsouth—westmonsoonneterrain，onthe

3、whole，leanstotheYangtzerivervalleyfromthesouthandnorthTherealemanyriversandreservoirs，whiletheimpactingbyofthepatternoftheSichuanBasin，formsallasymmetriccentripetalwatersbasedontheYangtzeRiveAllthosemakeChongqinganannual

4、frequencyofflooddisasterupto2。4times，whichformsaseriousthreattothesafeofpeople’SlivesandpropertyAsanonengineeringmeasures，flooddisasterriskassessmenthasanimportantsignificancetoChongqing’Sflooddamageassessmentfloodpreven

5、tiondisasterrelieflandUSeanddevelopmentTllisarticlediscussesthebasicprinciplesandmaincontentoftheflooddisasterriskassessment；presentsthecurrentandcommonlyusedmethodsofflooddisasterriskassessmentandanalyzestheadvantagesan

6、ddisadvantages；introducesthebasictheoryoffuzzymathematicsandthebasicstepsoffuzzycomprehensiveevaluationmethod，makethebestoftheadvantagesoffuzzycomprehensiveevaluationmethodwhenevaluatingtheflooddisasterriskdescribestheba

7、sicfeaturesandthemainfunctionsofGISandtheapplicationofGISinflooddisasterriskassessmentAccordingtoprinciplesoffloodriskassessmenttheprincipleofindicatorselectionandevaluationmethods，andtheactualsituationofthestudyareas，th

8、epaperselectstheindicatorsofflooddisasterriskassessme盹andsetsupindicatorssystemsofflooddisasterriskevaluationinChongqing；basedonfuzzycomprehensiveevaluationmethodconstructesthemodeloffuzzycomprehensiveevaluationtoflooddi

9、sasterriskinChongqing；inputthemodeltoGIS，throughprocessing，getsamapofthedistributionofChongqing‘SflooddisasterriskThemapshowsthattheriskofflooddisasterinChongqingweresignificantlydifferent：thehigh—riskareasaremainlydistr

10、ibutedinthewesterncentralandnortheastern’SLiangpingCountyKaixianandmostofWanzhouDistrict；lOWriskareasalemainlydistributedinmostpartsofsoutheastandnortheastern’SChengkouCountyWuxiCountyWushanCountyFengiieCountyandtheeaste