江河源区生态环境演变的过程及主导因素确定研究

18924´10241´3139´3616´34506621m31.8km2[12]11.11[]2002N1062005CCA05300[]197211211Table1NaturalfactorsdrawingforththeecologicalevolutioninthesourceareaPhasesofevolutionFactorsConsequencesCO221741.23Fig1Thesystemofdoublefactors’phaseaffectingtheecologicalevolutioninthesourcearea22.11AAkB1,B2,...,Bn4B(bij)bijAkBiBjbijAHP192Table2Implicationofscale19inthejudgementmatrices231max−−=nnCIλ3RITable3RIvaluefororder19bySaaty123456789RI000.580.901.121.241.321.411.45()kωW=W1W2WmTWi0=W10W20Wm0TBmaxmibWmmiiji,...,2,1)(11==∏=AiimiiA==∑=015CR0.102.21422AHP0.39740.17150.15350.03850.02790.17820.75140.11640.0947Table5-5WeightoffactorsdrawingforththeecologicalevolutioninthesourceareaC110.5B10.3974C120.5C210.1250(B2)0.1715C220.8750C310.1782A(B3)0.1535C320.7514RICICRmmCIMAX=−−=1λiBWBWnWBWiniii00100max)(,)(∑==λ6C330.0704C410.8333(B4)0.0385C420.1667C510.2499(B5)0.0279C520.7501C610.8B60.1164C620.2C710.1428(B7)0.0947720.8572311miiiab=∑5Table5Order-synthesizedoftheweightoffactorslayerClmatePhysiognomyreliefHumanproductionReligioncivilizationPoliticsWatermatteractivitiesTrafficconstruction0.39740.17150.15350.03850.02970.11640.0947Order0.50.19870.50.19870.12500.02140.87500.15010.17820.02140.75140.11870.07040.01350.83330.03210.16670.00640.24990.00740.75010.02230.80.09310.20.02230.14280.01350.85720.08127TheEcologicalenvironmentEvolutiveCourseoftheareaofYangtzeRiver,YellowRiverandLantsangandtheirLeadingFactorsFENGYongzhong,YANGGaiheCollegeofAgronomy,NorthwesternSci-TechUniversityofA&F,Yangling,Shaanxi712100,ChinaAbstract:TheecologicalenvironmentalevolutionintheareaofYangtzeRiver,YellowRiverandLantsanghasbeingaffectedbythenaturalandhumanbeingfactorstogether.Inthesefactorsofthenaturalandhumanbeings,whichistheleadingfactorsdecidingtheecologicalenvironmentalevolutioninthearea,itisveryimportanttoknowtheenvironmentalevolutionmechanismandevaluatetheintensityofthehumanbeings’actiontothearea.Inthearticle,theecologicalenvironmentalevolutioncourseisanalyzedsystemandsetupthefactorsystemoftheecologicalenvironmentevolutioninthearea.Theweighthasbeendecidedbythefamous42scientistsinthefieldnationwidethroughthequestionnaireinvestigation,thenaturalfactorincludingtemperatureandprecipitationandthehumanfactorincludinganimalhusbandryhavebeenconfirmedtheleadingfactorbytheanalytichierarchyprocess(AHP),andtheorderofthesefactorsarealsoconfirmed.Keywords:theareaofYangtzeRiver,YellowRiverandLantsang;ecologicalenvironment;evolution;leadingfactor;analytichierarchyprocess