东苕溪蓝藻时空分布及其与环境因子关系研究

3211201211ActaScientiaeCircumstantiaeVol．32No．11Nov．2012No．2008ZX07101-006-07863No．2009AA06A417SupportedbytheNationalWaterPollutionControlMajorProjectofChinaNo．2008ZX07101-006-07theHigh-TechResearchandDevelopmentProgramofChinaNo．2009AA06A417andtheSino-JapaneseInternationalCooperationProgram1988—[e-mail]*[e-mail]1988—[e-mail]*[e-mail]-temporaldistributionofcyanobacteriaintheEastTiaoxiRiveranditsrelationshipwithenvironmentalfactorsJ．ActaScientiaeCircumstantiae32112820-2826丁源，李建华*，王育来，黄亮亮2000922012-01-152012-06-012012-06-0518a、．86013291460．3%3km．MicrocystisaeruginosaAnabaenaflos-aquae．、．p＜0.01、p＜0．01p＜0．05．0253-2468201211-2820-07X522AStudyonthespatio-temporaldistributionofcyanobacteriaintheEastTiaoxiRiveranditsrelationshipwithenvironmentalfactorsDINGYuanLIJianhua*WANGYulaiHUANGLiangliangCollegeofEnvironmentalScienceandEngineeringKeyLaboratoryofYangtzeWaterEnvironmentMinistryofEducationTongjiUniversityShanghai200092Received15January2012receivedinrevisedform1June2012accepted5June2012AbstractAninvestigationofthespatio-temporaldistributionofphytoplanktoncommunitywascarriedoutintheautumnandspringseasonsintheEastTiaoxiRiver．Chlorophyllaconcentrationdensityandcompositionofphytoplanktonweremeasured．Furthermoreenvironmentalfactorsinfluencingthespatio-temporaldistributionofcyanobacteriawerealsoinvestigated．Theobtainedresultsshowedthatatotalof132taxain60generaofeightphylawasobservedincluding14taxainninegenerabelongedtocyanobacteriaaccountingfor60．3%ofthephytoplanktondensity．Thehighestvaluesofcyanobacteriadensitywerefoundthreekilometersawayfromthemouth．MicrocystisaeruginosadominateddownstreaminautumnandAnabaenaflos-aquaedominatedinspringwhilePhormidiumtenuedominatedupstream．Thespecialhydrodynamicconditionsandhighconcentrationofnutrientsledtoasustainedhighabundanceofcyanobacteriadownsteamtheriver．Correlationanalysisshowedthatthedensityofcyanobacteriawassignificantlycorrelatedwiththewaterdepthandtotalnitrogenconcentrationp＜0．01andalsopositivelycorrelatedwithdissolvedtotalcarbonp＜0．05．KeywordscyanobacteriadensitytheSouthernTaihuLaketotalnitrogentheEastTiaoxiRiver1Introduction．2011Huetal．20082008．Microcystis、Anabaena11Oscillatoria2011Yangetal．2008．2002“”、2008．“”2011．、．、2009．2008．2010Chenetal．2003Niuetal．2011Chuaietal．2011———．20091020105、“”．2Materialsandmethods2．130°05'～30°57'N119°28'～120°08'E．1460mm143～161d2009．151．4km2265．1km21956—200018．4%．、201020111．12～18、、3、．9～11．1～81Fig．1ThelocationoftheEastTiaoxiRiverintheTaihuLakeBasinandsamplingsites1282322010．、200910201053．24m3．14m3．29m3．25m．2．2、181H．200910、20105．HACHsensION156HACH2100PT、pH、DO、CondTurPhyto-PAMWalzGermanyaChl-a．1990TN、TPTOCVcphDTC．1L15mL24h30mL．19901979OlympusCX-2110×40．2．3“”《》《》．ExcelSPSS13．0Origin7．5．log1+xBray-CurtisANOSIMAnalysisofsimilaritiesp＜0．01p＜0．05p＞0．05．PRIMER5．02003．3Resultsanddiscussion3．1860132914．．0～99．5%36．5%．Microcystisaeruginosa、Phormidiumtenue、AnabaenaflosaquaeOscillatoriatenuisDactyloccocopsisrhaphidiodes、．1．1Table1One-wayANOSIMfortestingphytoplanktoncommunityindifferentriverreachesⅠ1～3Ⅱ4～8Ⅲ9～13Ⅳ14～18Ⅰ1Ⅱ0．0390．2991Ⅲ0．3060．0080．2500．0081Ⅳ0．4210．0040．2950．0030．1900．0121pp＜0．05．2．．1．14×107cell·L－11～792．0%．1．21×106cell·L－122821185．5%2．2%1～5．．2Fig．2SpatialvariationsofphytoplanktonandcyanobacteriadensityoftheEastTiaoxiRiver．．．、．20072007．2010105．3．223．pH6．20～9．42pH．7．、1．06～11．64mg·L－14．04mg·L－1、0．03～0．70mg·L－10．22mg·L－12．64～16．91mg·L－110．88mg·L－1、、1．43～6．32mg·L－13．36mg·L－1、0．01～0．63mg·L－10．19mg·L－11．64～17．66mg·L－17．61mg·L－1．3、、8～9．、、、、．2Table2PhysicalparametersoftheEastTiaoxiRiver/kmH/mT/℃pH/NTUⅠ1～30．48～6．483．181．50～2．101．7319．9～23．422．07．85～8．758．1059．9～134．0107．0Ⅱ4～820．33～47．0931．450．59～1．550．9621．3～23．422．27．38～7．987．79262．0～1000．0615．1Ⅲ9～1356．08～100．4176．750．35～0．720．5821．8～24．723．06．89～8．977．600．8～676．096．0Ⅳ14～18102．45～122．49114．330．12～0．300．2215．9～27．621．16．20～9．427．670．2～63．58．5．3282323Fig．3SpatialvariationsofnutrientconcentrationsoftheEastTiaoxiRiver3．3、3．3pHp＜0.05、p＜0．01p＜0.05．Brookesetal．2001．、．．22～26℃28℃20091020105．4．04mg·L－1．Zeng20071．．2011．pH、、2010．、Vezieetal．2002．．．、3．．、．3Table3CorrelationanalysisbetweenphytoplanktoncyanobacteriadensityandenvironmentalfactorsintheEastTiaoxiRiverHpHTNTPDTC－0．46＊＊0．49＊＊0．120．76＊＊－0．070．37*－0．210．250．36*0．35*0．170．17n=35*p＜0．05＊＊p＜0．01．4Conclusions1．60．3%93%．4282112、．3．1959—、、[e-mail]esponseofMicrocystisaeruginosatonitrogenphosphorusandlightJ．JournalofPlanktonResearch23121399-1411ChenYWFanCXTeubnerKetal．2003．Changesofnutrientsandphytoplanktonchlorophyll-ainalargeshallowlakeTaihuChinaan8-yearinvestigationJ．Hydrobiologia506/509273-279ChuaiXMDingWChenXFetal．2011．PhosphorusreleasefromcyanobacterialbloomsinMeiliangBayofLakeTaihuChinaJ．EcologicalEngineering37842-849．2009．J．40253-56ChenGQHuCWChengXTetal．2009．Analyticstudyonenhancementoffloodcontrolcapac