305201410EnvironmentalMonitoringinChinaVol.30No.5Oct.2014施择,李爱军,张榆霞,铁程,赵琦林,李颖,金玉650034对滇池浮游藻类群落组成和空间分布开展了2次调查,鉴定出藻类8门66属159种及变种,绿藻种类最多,蓝藻次之。5、12月滇池全湖平均藻类密度分别为1.398×108、2.180×108个/升,蓝藻门微囊藻属为优势藻类。5月的调查中滇池外海藻类生物量呈北高南低的格局,而12月则呈现南部和中部高,北部低。外海的藻类生物量明显高于草海,草海藻类群落构成与外海明显不同,主要表现为绿藻门藻类所占比例较高。12月滇池外海及全湖藻类生物量都显著高于5月。与上一次(2006—2007年)滇池浮游藻类的系统调查相比,滇池(主要是外海)浮游藻类在物种数量、常见藻类、优势藻类及生物量水平方面与之接近。滇池;浮游藻类;群落构成X835A1002-6002201405-0121-04ResearchonPhytoplanktonCommunityofDianchiLakeSHIZeLIAi-junZHANGYu-xiaTIEChengZHAOQi-linLIYingJINYuYunnanEnvironmentalMonitoringCentreKunming650034ChinaAbstractThespeciescompositionandtemporaldistributionofDianchiphytoplanktonwasstudiedinMay2012andDecember.Atotalof159algaespeciesbelongingto66genera8phylawereidentified.ThedominanttaxawereChlorophytaandCyanophytawiththespeciesnumberintheorderofChlorophyta>Cyanophyta.Theaveragedensityofphytoplanktoncommunityreached1.398×108cell/Land2.180×108cell/LinMayandDecemberseparately.MicrocystisKutzCyanophytawasthehighestcellproportion.TheaveragedensityofphytoplanktoncommunitywashigherinnorthernlakethanthatinsouthernlakeinMaybutthisdensitywaslowerinnorthernlakethanthatinsouthernandmiddlelakeinDecember.AlgalbiomasswassignificantlyhigherinouterlakethaninnerlakebuttherewashighercellproportionofChlorophytaininnerlakethanouterlake.AlgalbiomasswassignificantlyhigherinDecemberthaninMay.ComparedwiththephytoplanktoninvestigationinDianchiLakefromApril2006toMay2007fewdifferencewasfoundaboutthenumberofalgaespeciescommonspeciesdominantspeciesandbiomasslevelsinDianchiLakemostlyouterlakeofDianchi.KeywordsDianchilakephytoplanktoncommunitycomposition2014-07-082014-07-172010ZX07102-0061966-.102°37'~102°48'E、24°40'~25°02'N309km24.4m10.9m12.9。290km2。ⅤⅤⅤ1。1950、2-9。2120085。20122。12230520141011.14139、21。20125、122。11.21.2.125#0.5m20~30cm/s∞1~3min50mL197810。1.2.211。0.5m1L1L15mL。。1L30mL50mLKQ3200E40kHz150W30min。0.1mL20mm×20mm0.1mL10×1010×4010。27.5%。12。22.14166159、、、、、、、8。32、8553.46%12、3220.12%13、2817.61%1、10.63%1。1//%/%11.5210.6323.0321.2634.5453.143248.488553.4611.5221.261319.702817.611218.183220.1223.0342.5266100.00159100.002.25、122、3。220125/108·-1/%/108·-1/%/108·-1/%1.432100.000.741100.001.398100.001.11277.660.45961.921.08077.250.28519.880.23932.280.28220.200.0040.250.0243.200.0050.330.0322.210.0192.600.0312.221.09176.190.45761.691.06075.810.0080.590.0000.000.0080.570.23916.700.12316.560.23316.700.0936.520.16121.750.0976.921233201212/108·-1/%/108·-1/%/108·-1/%2.285100.000.128100.002.180100.001.98987.030.04434.471.89486.880.27512.030.06147.550.26412.130.0150.670.0107.470.0150.680.0060.270.01310.510.0070.311.95885.690.03224.981.86485.510.0150.640.0064.820.0140.660.2269.880.0075.620.2159.860.0873.790.08364.580.0863.972、35、121.398×108、2.180×108/。5、77.25%、20.20%、75.81%、16.70%。、2。1286.88%12.13%。、85.51%、9.86%。3。1247.55%34.47%24.98%。12、5。12、55。2.35、122。220125、121243052014102。89。512、。。12。2.45、122。2006—20079242、、。422006—200720064—200751420125、121541、、、、、、、889185、、、、、、、、866159、140.157×108~3.03×108/93.6%51.398×108/122.180×108/5、1282.0%3866159。。5、121.398×108、2.180×108/。。512、、。。、、。1.M.1990—2012.2.J.1964325-57.3《》.M.1983.4.J.198579-28.5.J.19857143-146.6.J.2005272170-175.7.J.200628173-77.8.J.2005273272-276.9.D.2009.10.M.1980.11.M.1990.12.M.4.2002701-707.