云蒙湖前置库浅水生态净化区植物对水质净化特征分析
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2020-03-23 08:39:48
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第35卷2016年第1期1月生态科学EcologicalScience35(11:136-142Jan.2Ol6陈景荣,王立志.云蒙湖前置库浅水生态净化区植物对水质净化特征分析[J].生态科学,2016,35(1):136—142.CHENJingrong,WANGLizhi.WaterpurificationcharacteristicsanalysisofYunmengLakepre—reservoirshallowecologicalpurificationarea[J].EcologicalScience,2016,35(1):136一l42.云蒙湖前置库浅水生态净化区植物对水质净化特征分析陈景荣,王立志山东省水土保持与环境保育重点实验室,临沂大学资源环境学院,临沂276000【摘要】原位监测云蒙湖前置库系统浅水生态净化区进出水总磷(TP)、溶解性活性磷(SRP)、总氮(TN)、硝态氮(NO3一N)、氨氮(NH;一N)及主要环境因子pH、溶解氧(DO)和氧化还原电位(Eh)及生物量的动态变化,并分析了生物量及环境因子和各形态氮磷净化率之间的关系。结果表明:浅水生态净化区对水中氮磷的净化效率存在夏高冬低的季节性变化规总氮和总磷夏季净化率平均在28.11%一43.42%,31.00%一48.00%之间,冬季净化率平均在19.02%一26_36%,21.52%一2857%之间。植物生长将氮磷富集于体内是对水体净化的一个主要原因,夏季植物旺盛生长冬季植物衰亡是浅水生态净化区净化效率季节性变化的主要影响因素。水生植物对环境因子pH、DO和Eh的改变量与各形态氮磷的净化率呈不同程度的相关,表明浅水生态净化区水生植物通过对环境因子DO、pH和Eh的提高来增加底泥对水中氮磷的吸附效率。关键词:前置库;净化:环境因子doi:10.14108~.cnki.1008—8873.2016.01.021中图分类号:X131.2文献标识码:A文章编号:10088873(2016)01.136.07WaterpurificationcharacteristicsanalysisofYunmengLakepre-reservoirshallowecologicalpurificationareaCHENJingrong,WANGLizhiShandongProvincialKeyLaboratoryofSoilConservationandEnvironmentalProtection,LinyiUniversity,Linyi276000ChinaAbstract:Theconcentrationsoftotalphosphorus(TP),solubleactivephosphorus(SRP),totalnitrogen(TN),nitratenitrogen(NO3-N),ammonianitrogen(NH—N)ofYunmengLakeper-reservoirsystemshallowecologicalpurificationareawereinsitumonitored.ThemainenvironmentalfactorsincludingpH,dissolvedoxygenfD0)redoxpotential(Eh)andbiomasswereinvestigated.RelationshipsbetweenPandNremovalrateandbiomassandenvironmenta1factorswereanalyzed.Theresultsindicatedthattheremova1rateofNandPoftheshallowecologicalpurificationareaincreasedinsummeranddecreasedinwinter.TheaverageremovalrateofTNandTPwas28.11%一43.42%,31.00%.48.00%insummer,and19.02%一26-36%.21.52%.28.57%inwinter.OReofthemainreasonsofwaterbOdvpurificationwasplantenrichment.Themainreasonforseasonalvariationofremova1ratewasthatplantvigorouslygrewinsummeranddiedinwinter.ThedifierenceofpH.DOandEhhaddifferentdegreecorrelationwithNandPremova1rate.Theresultshowedthatplantsinshallowecologicalpurif
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