太原盆地土壤重金屬元素分布特征及預(yù)警模型研究.pdf

1、中南大學(xué)碩士學(xué)位論文太原盆地土壤重金屬元素分布特征及預(yù)警模型研究姓名：王雄軍申請學(xué)位級別：碩士專業(yè)：礦產(chǎn)普查與勘探指導(dǎo)教師：賴健清20050501中南大學(xué)碩二I：學(xué)位論文ABSq’RACTTHEHEVEAYELEⅧNTS’SDISTRIBUTIVE’CHARACTERISTICSANDTHEWARNINGMODELOFTHESOILIN1、AIYUANBASINABSTRACTInthispaper，thesourcesanddistr

2、ibutionlawof8heavy—metalelementsCd，CrHg，Ni，Pb，Zn，As，andCuinthesoiloftheTaiyuanBasinareresearchedbysuchmethodsascontourmap，multifractal，systemdynamicsmodelingetc，andtheearlywarningmodelofecogeochemistryissetupbasedonthege

3、ochemicaldataThematerialworksandtheachievementsareasfollowsFirstofall，thebackgroundvaluesofthesoilinTaiYuanBasinarecalculatedonthebasisofthedeepsoildatatested，accordingtotheiterativeeliminateaveragevaluemethodComparingth

4、eshallowlayer’Sdatawiththebackgroundvalues，weanalyzethepollutionstatusofthesoilinthebasin，andsuggestthatthethreeelementsofHg，Cd，AsarethemostseriousinpollutionTracingthesourcesoftheheavymetalelementsbyassociatingwiththedi

5、stributivesituationoftheindustricalandmineralenterprisesindicatesthattheelementswereprincipallyexpelledfromthefactoriesSecondlythemultifractalpicturesof8heavy—metalelementsaredrawnunderpairsoflogarithmcoordinatesbyusingt

6、hedataofshallowanddeeplayersofthesoilinthecityandthebasinStatisticanalysisoftheinfluenceandfunctionintheecologicalenvironmentalandthefractallawoftheheavy—metalelementsshowtheorderofsignificanceoftheinfluentialfactors，and

7、itissuggestedthattheTaiyuancityisseriouslypollutedbyCd，Hg，andthepollutiontrendofNiistostrenthenwhilePbisreducingComparativelyintheTaiyuanbasin，thepollutiontrendofHgistostrengthenandCd’SreducingFinallyusingthetheoryofSyst

8、emDynamics，wehavecarriedonmodelingthroughthebasingeochemicaldatainvirtueofthesoftwareAndaccordingtomultifracal’Sresultofelements，adoptingsampleaveragevaluetolimitateprewarningofthepollutiontrendoftheheavymetallicelements