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引用本文:张萍,李哲,王胜,郭劲松,肖艳,刘静.不同磷浓度下光强、温度对水华鱼腥藻(Anabaenaflos-aquae)生长的动力学.湖泊科学,2015,27(3):459-465. DOI:10.18307/2015.0313
ZHANG Ping,LI Zhe,WANG Sheng,GUO Jinsong,XIAO Yan,LIU Jing.Modeling of Anabaena flos-aquae growth kinetics of light intensity and temperature within different levels of phosphorus concentrations. J. Lake Sci.2015,27(3):459-465. DOI:10.18307/2015.0313
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不同磷浓度下光强、温度对水华鱼腥藻(Anabaenaflos-aquae)生长的动力学
张萍1,2,3, 李哲2,3, 王胜1, 郭劲松2,3, 肖艳2,3, 刘静1,2,3
1.重庆大学城市建设与环境工程学院, 重庆 400045;2.中国科学院重庆绿色智能技术研究院, 重庆 400714;3.中国科学院水库水环境重点实验室, 重庆 400714
摘要:
水华鱼腥藻是常见的有害水华藻种,但其在磷、光强、温度等生境要素协同作用下的生长动力学鲜见报道. 本研究在Lehman模型、Steele模型基础上,设置8个PO43--P梯度:0、0.1、0.2、0.5、0.75、1.0、2.5、5.0 μmol/L,4个温度水平:15、20、25和30℃和4个光强水平:1000、2000、3000和5000 lx,采取单因素实验方法进行水华鱼腥藻室内纯培养. Monod模型表明水华鱼腥藻最适生长温度和光强条件分别是20℃和3000 lx,最大比生长速率(μmax)和半饱和常数(KS)分别为0.447 d-1和0.081 μmol P/L;分别用Lehman模型和Steele模型模拟水华鱼腥藻μmax在不同磷浓度下对连续变化的温度和光强的响应,Lehman动力学模拟结果表明水华鱼腥藻的最适生长温度为21.22±0.98℃,μmaxKS分别为0.421±0.011 d-1和0.055±0.009 μmol P/L;Steele模型结果表明μmaxKS分别为0.461±0.010 d-1和0.051±0.009 μmol P/L,水华鱼腥藻最适生长光强Ik为2650.93±88.19 lx.
关键词:  水华鱼腥藻  动力学模型  光强  温度  
DOI:10.18307/2015.0313
分类号:
基金项目:国家自然科学基金项目(51179215,51309220)和中国科学院西部行动计划项目(KZCX2-XB3-14)联合资助.
Modeling of Anabaena flos-aquae growth kinetics of light intensity and temperature within different levels of phosphorus concentrations
ZHANG Ping1,2,3, LI Zhe2,3, WANG Sheng1, GUO Jinsong2,3, XIAO Yan2,3, LIU Jing1,2,3
1.Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, P.R.China;2.Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P.R.China;3.Key Lab of Reservoir Water Environment, Chinese Academy of Sciences, Chongqing 400714, P.R.China
Abstract:
Anabaena flos-aquae is one of the common harmful cyanobacteria species.However, its growth kinetics co-impacted by phosphate concentration, light intensity and temperature have rarely been reported.In this paper, eight PO43--P concentration gradients (0, 0.1, 0.2, 0.5, 0.75, 1.0, 2.5 and 5.0 μmol/L), four water temperatures (15, 20, 25 and 30℃) and four light intensities (1000, 2000, 3000 and 5000 lx) were selected to carry out single factor batch experiments.A maximum specific growth rate (μmax) was used to indicate algae specific growth rate under optimal growth condition.Half-saturation constant (KS) could be applied to describe affinity of algae to nutrients.Regression results from Monod model showed that Anabaena flos-aquae reached μmax at 20℃ and 3000 lx.The μmax and KS were 0.447 d-1 and 0.081 μmol P/L, respectively.Regression results based on Lehman and Steele Model that examines the relationship between specific growth rate and continuous changing of temperature as well as light intensity, demonstrated that the optimum light intensity (Ik) and temperature (Topt) were 2650.93±88.19 lx and 21.22±0.98℃, respectively.Besides, the kinetic parameters μmax, KS, and Topt from Lehman Model were 0.421±0.011 d-1, 0.055±0.009 μmol P/L and 21.22±0.98℃, respectively.In the Steele model, μmax, KS and Ik were 0.461±0.010 d-1, 0.051±0.009 μmol P/L and 2650.93±88.19 lx, respectively.
Key words:  Anabaena flos-aquae  kinetic model  light intensity  temperature  phosphorus
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