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1、第15卷第6期地学前缘(中国地质大学(北京);北京大学)Vol.15No.62008年11月EarthScienceFrontiers(ChinaUniversityofGeosciences,Beijing;PekingUniversity)Nov.2008太湖沉积物中微生物多样性垂向分布特征1,222111赵兴青,杨柳燕,尹大强,王汝成,陆现彩,陆建军11内生金属矿床成矿机制研究国家重点实验室,南京大学地球科学与工程学院,江苏南京21009321污染控制与资源化研究国家重点实验室,南京大学环境学院,江苏南京2100931,222111ZhaoXingqing,YangL
2、iuyan,YinDaqiang,WangRucheng,LuXiancai,LuJianjun11StateKeyLaboratoryforMineralDepositResearch,SchoolofEarthSciencesandEngineering,NanjingUniversity,Nanjing210093,China21StateKeyLaboratoryofPollutionControlandResourceReuse,SchooloftheEnvironment,NanjingUniversity,Nanjing210093,ChinaZhaoXing
3、qing,YangLiuyan,YinDaqiang,etal.Verticaldistributionofthemicrobialcommunityinmodernlacustrinesed-imentsofTaihuLake.EarthScienceFrontiers,2008,15(6):177-184Abstract:Thepaperstudiesthephysicochemicalcharacteristics,nutritionsandthemicrobialcommunitydiver-sityofsedimentcoresamplesintheTaihuLa
4、kewithfumigation-digestionandPCR-DGGEanalysis.There-sultsindicatedthatthewater-sedimentinterfacewasinastateofmildreduction.Belowthesurfaceofsed-iments,Ehdecreasedrapidlywiththeincreaseindepth,anditisundertheanaerobicconditionexceptthetop810cmlayerofthesediment;inthedepthrangingfrom1510to22
5、15cm,theEhvalueisbasicallystable.Furtherincreasingthedepthofsedimentlayers,theEhvalueincreasedinthe/z0style.ThepHvaluede-creasedfirstandthenslowlyincreasedwiththeincreaseinthedepthofsedimentlayers;thepHvaluechangedslightlyintheprofileofsedimentsandrangedfrom712to716.TheTN,TPandOMconcentrat
6、ionsinsed-imentsarehigh,andtheirmaximumconcentrationsreached21436mg/g,01731mg/gand31817%,respec-tively.TheirverticalprofilesshowedthattheTNandOMconcentrationsdecreasedwiththeincreaseinthedepthofsedimentlayers.TheTPconcentrationslowlydecreasedwiththeincreaseinthedepthofsedimentlayersinthe/z
7、0style.Thereareprominentdifferencesinmicrobialdiversityspatially;thecomparabilityandthedynamiccharacteristicsofcommunitystructuresbetweendifferentsedimentsamplesatdifferentdeptharedifferent.Inordertotestthecorrelationoftheparameters,thepropertiesofthesediments
