污灌區(qū)菜地土壤質量評價及其污染預測模型研究——保定市郊為例.pdf

1、河北農業(yè)大學碩士學位論文污灌區(qū)菜地土壤質量評價及其污染預測模型研究——保定市郊為例姓名：王樹濤申請學位級別：碩士專業(yè)：土壤學指導教師：李博文20050618StudyonPredictingEffectsoftheSoilPollutedwithHeavyMetalsonVegetablesandMethodofAssessingQualityoftheSoilinVegetablePlotIrrigatedwithSewage——AC

2、aseStudyonBaodingSuburbAuthor：WangShu—taoMajor：SoilScienceTutor：ProfessorLiBowenAbstractAimingatthedifficultproblemofevaluationresearchofsoilqualityintheareasirrigatedwithsewageandhavingvegetablefieldsintheareasirrigated

3、withsewageinBaodingCityasaresearchobject，thispapermakesaihnherexplorationtotheevaluationmethodoftheeffectivecombinationofsoilqualityfertilizerfactorandheavymetalfactorandstudiestheforecastingmodelofheavymetalindifferentv

4、egetablefields，onthebasisofevaluatingthesoilqualityandforecastingtheheavymetalpollution，andadoptingthemethodoffieldinvestigationorcombiningthemodemmathsstatisticswithspecialityknowledge，whilehavingsoilfertilizerfactorand

5、heavymetalpollutionfactorastheindex，whichisusedastheevaluationindexofcommonfanningsoilandpollutedfarmingsoil，whichformstheindexevaluationsystemofsoilqualityintheareasirrigatedwithsewage(1)Usingfieldinvestigationandmultip

6、leregressionanalysis，andinordertOforecastsoilPb，Cd，CuandZnpollution，19retummodelsof22kindsofvegetablefrom5mainclassesasthegreenleafclass，thefruit&melonclass，therootvegetableclass，theonion&garlicclassandcabbageclassarepre

7、liminarilyworkedOUttoforecastthepossiblepollutioncontentinallkindsofvegetables，whichareplantedonthesoilcontainingcertainamountofheavymetalMeanwhile，withtheresultofsoilqualityappraisal，ascientificforecastingstudyoftheposs

8、iblepollutionofeverykindofheavymetaltodifferentvarietiesofvegetablescallbemadetoprovideascientificfoundationforthedevelopmentofsoilvegetablegrowingintheareasirrigatedwithsewage(2)Usingthemaincompositionanalysis，itreveals

9、thecauseoftheeffectivecombinationbetweenthefertilityfactorandpollutionfactorinthesoilqualityevaluationinareasirrigatedwithsewage，andexplorethemaincomprehensiveindexofsoilqualityinareasirrigatedwithsewage，andalsomakeitcle

10、arthatthecontributionofthenutrientfertilityfactorisgreaterthanthesoilpollutionfactorinthesoilirrigatedwithsewageTheappraisalofthefertilitylevelofthesoilnutrientoccupiesmainstatus，whiletheappraisalofthesoilpollutiondegree

11、isinthesecondaryposition(3)Itisputforwardtousedynamicclusteranalysetoappraisalsoilqualitylevelbylevel，Usingdynamicclusteranalyses，firstthesoilirrigatedwithsewageisclassifiedAsthemainpartaccordingtothefertilitylevel，thent