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*11121111.0140102.01002220121120132。32866。20、18、16、6、、2、1。3.27×107cell/L。、、、、、、、、、、、、。—。、COD。DOI10.13205/j．hjgc．201403011CHAＲACTEＲISTICSOFPLANKTONICALGALCOMMUNITYINWINTEＲINLAKEWULIANGSUHAIYuLinghong1ZhangXiaoya1LiWeiping1LiXing2XuJing1XueYe1LiGuidi11.TheCollegeofEnvironment＆EnergyＲesourcesInnerMongoliaUniversityofScience＆TechnologyBaotou014010China2.InnerMongoliaEngineeringＲesearchCenterforWater-SavingAgricultureInnerMongoliaNormalUniversityHohhot010022ChinaAbstractInordertostudythecharacteristicofplanktonicalgaecommunityinwinterinLakeWuliangsuhaiasurveywascarriedoutinLakeWuliangsuhaiaboutthecommunitystructureofphytoplanktonandwaterenvironmentstatusfromnovember2012tofebruary2013．Theinvestigationresultsindicatedthattherewere66generain8phylumofphytoplanktonin32watersamplescollectedamongwhichtherewere20generainChlorophyta18generainBacillariophyta16generainCyanophyta6generainEuglenophyta2generainCryptophyta2generainPyrrophytaChrysophytaandXanthophytaedch1genera．ThephytoplanktonpopulationofLakeWuliangsuhaiinwinterishighertheaveragenumberofphytoplanktonis3.27×107cell/L．ThesupenorgenuswereScenedesmusChamydomonasSchroederiaAnkistrodesmusfalcatusCyclotellaSynedraFragilariaNaviculaNitzschiaEuglenaPhormidiumＲaphidiopsisandMerismopedia．Accordingtothedeterminationofeachindexindicatedthatthewaterqualitywasinmoderate-eutrophicationlevelsandpartofthesamplesinheavyeutrophicationstateinwinterofLakeWuliangsuha．ＲelatedanalysisshowedthatthephytoplanktonquantitywaspositivelycorrelatedwithwatertemperatureandnegativelycorrelatedwithtransparencyCOD．KeywordsplanktonicalgaecommunitystructureLakeWuliangsuhai*41263010E090301。2013－06－06phytoplankton1。。2-4。。、。134WaterPollutionControl。40°36'～41°03'108°43'～108°57'。、130km。2.5～3m30.5～3.0m1.5m273.32km2。7.3℃224mm1502mm152d1145。、、5-6。22.1201211—20132、1102。I12、J11L11L15、N13O10Q8Q10S6V3。GPS。2.21L0.5m2、Multi340i、、pH、DO、WT、SD、。TN、TP、NH+4-N、COD、NO－3-N、NO－2-N《》。15‰4g6g100mL。48h30mL0.1mL10×402±15%7-11。1Fig．1WaterenvironmentfunctionaldiagramofLakeWuliangsuhai2Fig．2DistributionmapofsamplingsitesinLakeWuliangsuhai《》12-14。。44EnvironmentalEngineering33.110.5～6.0℃pH7.22～8.457.89。1J11NH+4-N、COD、TN、TP、NO－3-N、NO－2-N10TN、TPI12、L15J11、I12L15。、、。、VTN4.44～10.31TP1.13～23.71N/P18∶115、16。17SD、TN、TPO10TN、TPI12、J11、L11、L15TNTP—200718。1Table1PhysicalandchemicalfactorsofwaterenvironmentatvarioussamplingsitesinLakeWuliangsuhai/℃pHSD/m/mρNH+4-N/mg·L－1ρCOD/mg·L－1ρTN/mg·L－1ρTP/mg·L－1ρNO－3-N/mg·L－1ρNO－2-N/mg·L－1I121.87.410.61.701.4134.6816.961.3530.130.028J111.87.611.031.6213.88187.6820.622.7410.480.146L112.07.220.710.714.5132.6413.931.290.070.06L151.88.131.471.800.1361.29.891.3140.060.012N132.27.950.741.670.6840.812.210.071—0.006O100.57.990.631.850.7120.411.460.2270.430.014Q103.48.170.881.700.7585.6810.420.1152.150.012Q84.88.221.011.900.81104.88.870.134—0.017S65.47.751.241.840.6753.0410.790.232—0.007V36.08.452.382.750.58110.1612.110.0230.090.0030.71.20.10.46.00.5＜0.1＞6.0＞0.53.220121120132328662。2018166221。30.30%27.27%24.24%9.09%、、3.03%1.52%3－－。3.3106cell/L42.4×106～1.74×108cell/L3.27×107cell/L。3Fig．3TheproportionofphytoplanktonspeciesinLakeWuliangsuhai。4V3、S6、Q8V32.4×106cell/L。I12、N13、O10、L15O101.74×108cell/L。。J11。54WaterPollutionControl2Table2CompositionofphytoplanktonspeciesinLakeWuliangsuhaiChlorphytaChamydomonasColeochaeteChlorogoniumSchroederiaChodatellaChlorellaAnkistrodesmusAnkistrodesmusfalcatusOocystisSelenastrumCrucigeniaPediastrumScenedesmusCoelastrumActinastrumUlothrixStaurastrumClosteriumCosmariumTetrasporaBacillariophytaMelosiraCyclotellaDiatomaSynedraCocconeisFragilariaTabellariaStauroneisNaviculaGomphonemaCymbellaAchnanthesSurirellaEpithemiaNitzschiaNitzschiapungensPinnulariaAsterionellaCyanophytaOscillatoriaAnabeanaMicrocystisMerismopediaPhormidiumChroococcusCoelosphaeriumDactylococcopsisNostocAphanizomenonSpirulinaGloeotrichiaHammatoideaＲaphidiopsisCylindrospermumAnabaenopsisEuglenophytaCryptophytaPyrrophytaChrysophytaXanthophytaEuglenaPhacusCryptomonasChroomonasGymnodiniumGlenodiniumSynuraTribonema4Fig．4PhytoplanktondensityineachsamplepointScenedesmusacuminatus、Sce．Cavinatus、Sce．oblipuus、Chamydomonas、Schroederia、AnkistrodesmusfalcatusCyclotella、Synedra、Fragilaria、Navicula、NitzschiaPhormidium、Ｒaphidiopsis、Merismopedia、Euglena。Tabellaria、CryptomonasOvata、、SynuraV31Tribonema11。3.4SPSS17.0Pearson。3。3、COD。41104—。TN、TPV。2、、、、、、、866、、30.30%、27.27%、24.24%、、、、、、、、、、、、。3、COD。64EnvironmentalEngineering3Table3ThephytoplanktonquantityandphysicochemicalindexcorrelationanalysistableofLakeWuliangsuhaipHTNTPCODNH+4-NNO－3-NNO－2-NpH10.4760.16410.6120.0600.676*0.03210.5550.0960.638*0.0470.854＊＊0.00210.5290.1160.4510.1910.764*0.0100.848＊＊0.0021TN－0.6300.051－0.3900.2650.2080.564－0.2540.4790.1080.7671TP－0.6020.0660.4900.151－0.1750.628－0.4070.2430.0900.8040.815＊＊0.0041COD0.2320.5200.2930.4100.3990.2530.1420.6950.5030.1390.4120.2370.4440.1991NH+4-N0.4590.182－0.2800.433－0.1290.723－0.2950.4080.0900.8050.863＊＊0.0010.873＊＊0.0010.695*0.0261NO－3-N0.2900.5290.1230.793－0.2300.621－0.2900.528－0.3250.477－0.2480.592－0.3260.4760.1660.722－0.0700