沉水植物苦草和轮叶黑藻对水环境的影响

中国荩学c丕握2016，32(28)：155-159ChineseAgriculturalScienceBulletin沉水植物苦草和轮叶黑藻对水环境的影响尚媛媛，关保华，郑建伟，康玉辉(贵州省气象服务中心，贵阳550002；2中科院南京地理与湖泊研究所湖泊与环境国家重点实验室，南京210008；南京信息工程大学，南京210004；4湖北省水力水电科学研究院，武汉430070)摘要：为了研究沉水植物苦草和轮叶黑藻的对水环境的影响，在控制条件下单独种植苦草、轮叶黑和二者混种，笔者比较研究了苦草、苦草+黑藻、黑藻组合水体中总氮(TN)、总磷(TP)、铵氮(NH4一N)、绿素a、总悬浮质(Tss)及总有机氮(TOC)-~度的区别。结果表明：苦草和轮叶黑藻对水环境的影响不同，单独种植苦草时，上覆水中总氮和氨氮含量高于其他处理，但总磷、叶绿素、TSS和TOC含量都低于轮叶黑藻单种和混种处理。研究结果说明，苦草对于降低上覆水中总磷和叶绿素含量作用优于轮叶黑藻，对维持水体水质有良好效果。关键词：苦草；黑藻；沉水植物；水环境中图分类号：Q14文献标志码：A论文编号：casb16030204verticillata：theInfluenceOilⅥterEnvironmentShangYuanyuan，GuanBaohua，ZhengJianwei。，KangYuhui(MeteorologicalServiceCenterofGuizhou，Guiyang550002；StateKeyLaboratoryofLakesandEnvironment，NanjingInstituteofGeographyandLimnology,ChineseAcademyofSciences，Naming210008；NanfingUniversityofInformationScienceandTechnology，Naming210004；4HubeiInstituteofHydraulicandHydropower，Wuhan430070)Abstract：ThepaperaimstostudytheinfluenceofsubmergedplantsVMlisnerianatansandHydnTlaverticillataonwaterenvironment，VMlisnerianatansandHydrillavertieillatawereplantedaloneandmixedundertherestrainedconditions．Theauthorscomparativelystudiedtheconcentrationdifferenceoftotalnitrogen(TN)，totalphosphorus(TP)，ammoniumnitrogen(NH4一N)，chlorophyll—a，totalsuspendedmass(TSS)andtotalorganicnitrogen(TOC)inthewaterofVallisnerianatansalone，Hydrillaverticillataaloneandmixedofthetwo．Theresultsshowedthat：theinfluenceofVallisnerianatansandHydrillavertieillataonwaterenvironmentwasdifferent．WhenVallisnerianatanswasplantedalone，thecontentoftotalnitrogenfTN1andammoniumnitrogen(NH4一N)inoverlyingwaterwashigherthantheothertwoprocessingmethods，butthecontentoftotalphosphorus(TP)andchlorophyll—a，TSSandTOCwerelowerthanthatofHydrillaverticillataplantedaloneandthemixedplantingofthetwo。TheresultsalsoshowedthatVMlisnerianatanswhichcouldreducethecontentoftotalphosphorusandchlorophyll——ainoverlyingwaterwasbetterthanHydrillaverticillata，ithadagoodeffectonmaintainingwaterquality．Keywords：Vallisnerianatans；Hydrillaverticillata；submergedplants；waterenvir