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引用本文:汤宏波,胡圣,胡征宇,况琪军,刘国祥.武汉东湖甲藻水华与环境因子的关系.湖泊科学,2007,19(6):632-636. DOI:10.18307/2007.0602
TANG Hongbo,Hu sheng,Huzhengyu,Kuang qijun,Liu guoxiang.Relationship between perdiniopsis sp, and environmental factors in Lake Donghu,Wuhan. J. Lake Sci.2007,19(6):632-636. DOI:10.18307/2007.0602
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武汉东湖甲藻水华与环境因子的关系
汤宏波1,2, 胡圣1,3, 胡征宇1, 况琪军1, 刘国祥1
1.中国科学院水生生物研究所淡水生态与生物技术国家重点实验室, 武汉 430072;2.中国科学院武汉文献情报中心, 武汉 430071;3.中国科学院研究生院, 北京 100049
摘要:
由于水体富营养化等原因,在全球范围内,水华频繁爆发.近来,发现武汉东湖出现了一种拟多甲藻(Peridiniopsis sp.)水华,该藻是广温性种,水华持续时间较长,最高细胞密度达2541.44×104cells/L.研究了武汉东湖拟多甲藻水华种群动态及其与环境因子之间的关系.相关分析表明,拟多甲藻密度和表层总磷、1.2m处的总氮以及表层硝酸盐浓度成显著正相关,但是总磷、溶解性磷酸盐、总氮、磷酸盐以及氨氮浓度在形成明显水华前大幅度升高,水华消亡时,处于低谷.适合的光照条件,也是拟多甲藻水华形成的刺激因子之一.另外,从一些采样点浮游植物组成及分布来看,风在一定程度上加重了水华表观的严重程度.此外,还观察到了水华的消亡及其发生过程,水华消亡时,大量拟多甲藻下沉.分析认为,水华的发生是多种环境因子综合作用的结果.
关键词:  拟多甲藻  武汉东湖  水华  环境因子
DOI:10.18307/2007.0602
分类号:
基金项目:中国科学院知识创新工程项目(KSCX2-SW-111);国家自然科学基金面上项目(30470140)联合资助.
Relationship between perdiniopsis sp, and environmental factors in Lake Donghu,Wuhan
TANG Hongbo1,2, Hu sheng1,3, Huzhengyu1, Kuang qijun1, Liu guoxiang1
1.State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China;2.Wuhan Branch of the National Science library, Chinese Academy of Sciences, Wuhan 430071, P. R. China;3.Graduate School of the Chinese Academy of Sciences, Bering 100049, P. R. China
Abstract:
Because a lot of nitrogen and phosphorus flow into lakes and rivers, water bloom frequently occurs inworld scope. Recently a sori of Peridiniopsis sp. bloom was appeared in Lake Donghu, Wuhan. The Peridirtiopsisap. can adapt well to a large,,of temperature. The algal bloom lasted a long time and the maximum density ofPeridiniopsis ap.reached as high as 2. 54 x 107 cells/L. In the paper, population dynamics of Peridiniopsis ap.andits relationship with environmental factors in Lake Donghu were studied. The correlation analysis indicated Peridini-opsis sp.be remarkable positive wrrelation with the concentrations of TP surface,TN1.2metermand N03-N surface. However, the concentrations of TP, TOP, TN, TON, PO4-P and NH4-N were raised just a day before blooming and feVto lowest after blooming. Suitable strength of illumination may be a triggering factor for blooming. In addition, itcan be found from the composition and distribution of phytoplarJcton in some sampling stations that in certain degreewind can make Peridiniopsis ap. gather and cause bloom. The development, occurring and dying out of algal bloomwas observed. When the alga bloom died out, a lot of Peridiniopsis ap. sunk down toward lower layer. By analy-zing, authors consider many environmental factors lead to water bloom together.
Key words:  Peridiniopsis sp.  Lake Donghu(Wuhan)  algal bloom  environmental factors
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