摘要
SomefarmlandsoilsinShanghaihadhighsalinitylevels,suggestingsecondarysalinizationofthesoils.ThesoilproblemsinShanghaiwerestudied,includingthesalinityandnitratenitrogen(NO-3-N)concentrations,heavymetalpollutioncharacteristics,andorganochlorinepesticide(OCP)residuallevelsandpolycyclicaromatichydrocarbon(PAH)contents.AccumulationofNO-3-Ninvegetablesoilswasthemostsignificantamongdifferentfunctionalsoils.Heavymetalpollutionwassignificantinthesamplescollectedfromthesewage-irrigatedlandandroadside.TheidentificationofthemetalsourcesthroughmultivariatestatisticalanalysisindicatedthatPb,Zn,CuandCrinurbansoilswerefromthetrafficpollutants;excessiveapplicationoffertilizerandirrigationwerethemainreasonsforthemetalpollutioninagriculturalsoils;Niintheobservedsoilswascontrolledbyparentsoils.OCPscouldstillbedetectedinfarmlandsoilsbutdegradedgreatlyinlast20yearsafterprohibitionoftheirusage.PAHswith2-3ringswerethemaincomponentsinindustrialsoils.TheconcentratedPAHsintheinvestigatedsoilswerelikelyfrompetroleumandcoalcombustion.
出版日期
2009年06月16日（中国期刊网平台首次上网日期，不代表论文的发表时间）
