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引用本文:王菲菲,李小平,程曦,吴雪峰.基于NEB试验的不同湖泊夏季营养物投入与藻类响应关系的比较:以淀山湖、小兴凯湖和洱海为例.湖泊科学,2012,24(1):51-58. DOI:10.18307/2012.0107
WANG Feifei,LI Xiaoping,CHENG Xi,WU Xuefeng.Nutrients enrichment and algal response based on in situ experiments of NEB in summer:a comparative study of Lakes Dianshan, Xiaoxingkai and Erhai. J. Lake Sci.2012,24(1):51-58. DOI:10.18307/2012.0107
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基于NEB试验的不同湖泊夏季营养物投入与藻类响应关系的比较:以淀山湖、小兴凯湖和洱海为例
王菲菲1, 李小平1, 程曦2, 吴雪峰3
1.华东师范大学河口海岸学国家重点实验室, 上海 200062;2.上海市环境科学研究院, 上海 200233;3.上海建科建设监理咨询有限公司, 上海 200032
摘要:
淀山湖、小兴凯湖和洱海分别处在不同的营养阶段,夏季都存在蓝藻水华现象,有效控制蓝藻水华应控氮还是控磷一直存在争议.本研究采用营养物加富生物测试的试验方法,研究和比较三个湖泊限制性营养元素(N和P)夏季对浮游藻类生长的刺激作用,并采用多因素方差分析和两两比较方法(LSD)检验试验结果的显著性.结果表明:淀山湖(TN/TP=10左右)、洱海(TN/TP=29左右)、小兴凯湖(TN/TP=9左右)在夏季分别表现出显著的氮响应、氮磷双重响应、氮响应;较低氮磷比的营养程度较高的湖泊(淀山湖和小兴凯湖)夏季应控制氮含量,若添加氮更容易引发蓝藻(微囊藻)水华,而高氮磷比的初期富营养化湖泊(洱海)夏季应同时控制氮磷含量,同时添加氮磷的交互作用容易引发蓝藻(微囊藻)水华.
关键词:  蓝藻水华  NEB  限制性营养元素  氮磷比  淀山湖  洱海  小兴凯湖
DOI:10.18307/2012.0107
分类号:
基金项目:国家水体污染控制与治理科技重大专项项目(2009ZX07106-001-006)资助
Nutrients enrichment and algal response based on in situ experiments of NEB in summer:a comparative study of Lakes Dianshan, Xiaoxingkai and Erhai
WANG Feifei1, LI Xiaoping1, CHENG Xi2, WU Xuefeng3
1.State Key Laboratory and Coastal Research, East China Normal University, Shanghai 200062, P. R. China;2.Shanghai Academy of Environmental Sciences, Shanghai 200233, P. R. China;3.Shanghai Jianke Project Management Co. Ltd., Shanghai 200032, P. R. China
Abstract:
Lakes Dianshan, Xiaoxingkai and Erhai represent different trophic status respectively, and each of them is suffering severe cyanobacteria blooms in summer. Nutrient enrichment bioassays were conducted in the fields to compare the effects of nutrients (N and P) on cyanobacteria growth in the three lakes in summer. Significant differences between/among the treatments of the experiments were tested by Univariate and LSD. The results showed that Lakes Dianshan, Erhai and Xiaoxingkai have significant responses to N, N and P, N in summer, and add N to the Lake Dianshan and Lake Xiaoxingkai with low N:P ratio which may cause cyanobacteria(Microcystis) blooms easily, while N and P interaction may induce cyanobacteria bloom in lake(Lake Erhai) with high N:P ratio.
Key words:  Cyanobacteria bloom  NEB  TN/TP ratio  Lake Dianshan  Lake Xiaoxingkai  Lake Erhai
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