樹木附生苔蘚重金屬元素累積特征及其來源的初步探討.pdf

1、南京林業(yè)大學(xué)碩士學(xué)位論文樹木附生苔蘚重金屬元素累積特征及其來源的初步探討姓名：趙寧申請學(xué)位級別：碩士專業(yè)：環(huán)境科學(xué)指導(dǎo)教師：張銀龍20070601PreliminarystudyonsourcesandAccumulationofheavymetalcontentsofepiphyticbryophytesAbstractBryophytesareusedasbiomonitorinthefieldofenvironmentalmoni

2、toringinmanycountriesbecauseofitswellknownadvantagesofsensitivityofenvironment’Schanges，whichmuchattentionhasbeenpaidtoBryophytes’monitoringonheavymetalsbyitsheavymetalcontentsisanimportantpartofbryophytes’monit06ngfacto

3、rs，whichcausedthefocusingresearchesonthesourcesofheavymetalcontentsinbryophytesinrecentyearsTheepiphyticbryophytesHaplocladiummicrophyllumandEntodoncompressuswhichdistributeextensivelyinNanjingwerestudiedinZhongshanBotan

4、icalGarden，ZhongshanTeaplantationQingliangHillParkLingguTemple，EastBeOingRoadandZhujiangRDad，12sitesina11Bymeasuredtheheavymetalcontentsinthetwobryophytesandtheenvironment，studiedtheirabilityofaccumulatingofheavymetalsan

5、dtheinfluenceofenvironmentalfactors(thedustandthesubsumes)，andpreliminarilystudiedthesourcesofheavymetalcontentsoftheepiphytiebryophytesThemainconclusionsofthisstudyCanbesummedupasfollows：1)Theabilitiesofaccumulatingheav

6、ymetalsofthetwoepiphyticbryophytesaresimilarandtheychangedtogetheratdifferentsamplesites，whichareatthehi【班estlevelatthesitesEastBeijingRoadandZhujiangRoad，nextisLingguTemple，thelowestisatthesitesZhongshanBotanicalGardenZ

7、hongshanTea—plantationandQingliangHillPark2)Theamountofairsuspendedparticlescontentsofthetwoepiphyticbryophytesaremuchhigherthanthatoftheleavesofthetr℃eswhichtheepiphyticbryophytesattachedtoAndtheratio(contentsofheavymet

8、alsinbryophytes／contentsofheavymetalsinthecorrespondingleaves)isrelatedtothecontentofTSPofeverysiteAllheavymetalcontentsinEntodoncompressusanditscorrespondingairsuspendedparticlescorrelativesathi曲leave，nextisHaplocladium

9、microphyllum，andthecorrelationcoefficientsoftheepiphyticbryophytesaremuchhi啦erthanthatofthecorrespondingleavesThentheresultsofRegressiveanalysisindicatedthatairsuspendedparticlesinfluencestheheavymetalcontentsoftheepiphy

10、ticbryophytes3)ThedifferenceofaccumulationabilityofheavymetalsissignificantbetweenleavesandthebryophytesThebryophytes’accumulationabilitiesaremuchstrongerthanthatoftheleaves，andthetwobryophytes’accumulationabilitiesareSi

11、milar4)TheelementsinbryophytesandtheircorrespondingsubstratebarkscorrelativesByheresultsofRegressiveanalysisthesubstratesbarksinfluencethecontentsofelementsCr、Cu、ZncontentsinHaplocladiummicrophyIlumsignificantly(P01)whil