The-comparative-study-on-the-ecological-sensitivity-analysis-in-Huixian-karst-wetland--China

ZhangMingwuetal./ProcediaEnvironmentalSciences2(2010)386–398387CountyandYanshanDistrictofGuilin,Guangxi.Thewetlandislocatedineastlongitude110°08�38�~110°16�57�,northlatitude25°05�08�~25°08�34�.GeographicallocationofHuixianwetlandisshowninFig.1.Fig.1.GeographicalmapofHuixianwetlandSince1950s,withtheincreaseofhumanactivitiesandwetlandreclamation,andwiththelackofeffectivemanagementandprotection,theoriginalwetlandhasbeencontinuouslyundermined;thewaterhasgraduallybeenshrinking;andwetlandecosystemshavebeenseriouslydamaged.Atpresent,thelargegrassyareasaroundJiutouMountainandFenghuangMountainwereopeneduptoabout2000muoffarmland.ThemarshesaroundDulongPond,JiutouMountain,FenghuangMountainandLongMountainareexcavatedtoabout4200muoffishponds.ThestatusoflandusinginHuixianwetlandreserveisshowninFig.2.Fig.2.StatusoflandusinginHuixianwetlandreserveInresentyears,therearemoreandmorestudiesonHuixianwetland.WithaseriesofremotesensingdatainHuixianwetlandreserve,CaiDesuo,MaZuluetal[1]usedGIStechniquetoanalyzethespatio-temporalevolutionofthewetlandsform1969to2006.Lishijie,CaiDesuoetal[2]studiedpreliminarilyontheenvironmentchangesrecordderivedfromsedimentcoresofHuixiankarstwetland.FrameworkofEstablishmentofHealthassessment388ZhangMingwuetal./ProcediaEnvironmentalSciences2(2010)386–398PrograminLijiangRiverWatershedCaiDesuo,WangBeixinetal[3]studiedtheaquaticecosystemhealthmonitoringandevaluationsystemofthewholeLijiangRiverwatershed.Eco-environmentalsensitivityevaluationisanimportantpartofplanningofHuixianwetland,whichhasaguidingroleinecologicalfunctionzoning.Therearealotofresearchesontheevaluationofecologicalenvironment[4-11].ThispaperappliestwomethodstoanalyzetheecologicalsensitivityinHuixianwetland,anddoescomparativeresearchofthesetwomethods.Theonemethod(theecologicalunitmethod)isthattheHuixianwetlandreserveisdividedintoseveralecologicalunitsaccordingtodifferentgeographicconditionandagriculturalstructure;thenthemainfactorsofecologicalsensitivityareselected;Delphi[12]andAnalyticalHierarchyPro